Journal articles: 'Software defined radio/Software radio (SDR/SR)'

1

Tato, Anxo. "Software Defined Radio: A Brief Introduction." Proceedings 2, no. 18 (September 19, 2018): 1196. http://dx.doi.org/10.3390/proceedings2181196.

Full text

Abstract:

In this short article the concept of Software Defined Radio (SDR) is introduced and compared with the traditional radio. Then, a research project of atlanTTic center which used this technology was briefly presented and lastly, we include a reference to some dissemination activities related with SDR to be developed shortly.

APA, Harvard, Vancouver, ISO, and other styles

2

Sârbu, Annamaria, and Dumitru Neagoie. "Wi-Fi Jamming Using Software Defined Radio." International conference KNOWLEDGE-BASED ORGANIZATION 26, no. 3 (June 1, 2020): 162–66. http://dx.doi.org/10.2478/kbo-2020-0132.

Full text

Abstract:

AbstractIn this article we present software defined radio (SDR) instrumentation used for interfering or jamming Wi-Fi networks. A Wi-Fi network analyzer application was used together with a low cost, commercially available SDR, Hack RF one, to conduct aimed interference on a 802.11 b/g/n network. A GNU radio flowchart was used to control the radio transceiver (SDR) by emitting a jamming signal aimed towards the targeted client by means of a directional antenna. Various signal bandwidths and distance from the targeted device were tested to characterize the adequate parameters of an effective jamming signal with respect to the calculated signal to noise ratio (SNR). Jamming efficiency was evaluated by means of a Wi-Fi connectivity speed test application installed on the targeted device, in order to measure connectivity degradation if complete jamming was not possible. Results presented suggest that Wi-Fi jamming is possible by means of SDR technology, providing insights on the methodology used and initial optimisation procedures in the test environment.

APA, Harvard, Vancouver, ISO, and other styles

3

Machado-Fernández, José Raúl. "Software Defined Radio: Basic Principles and Applications." REVISTA FACULTAD DE INGENIERÍA 24, no. 38 (December 28, 2014): 79. http://dx.doi.org/10.19053/01211129.3160.

Full text

Abstract:

The author makes a review of the SDR (Software Defined Radio) technology, including hardware schemes and application fields. A low performance device is presented and several tests are executed with it using free software. With the acquired experience, SDR employment opportunities are identified for low-cost solutions that can solve significant problems. In addition, a list of the most important frameworks related to the technology developed in the last years is offered, recommending the use of three of them.

APA, Harvard, Vancouver, ISO, and other styles

4

Cwalina, Krzysztof, Piotr Rajchowski, and Jarosław Sadowski. "Wideband Radio Direction Finder Implemented in Software Defined Radio Technology." Applied Mechanics and Materials 817 (January 2016): 348–55. http://dx.doi.org/10.4028/www.scientific.net/amm.817.348.

Full text

Abstract:

In the paper a wideband radio direction finder (RDF) implemented in software defined radio (SDR) technology and the results of hardware layer research, including developed antenna switching unit (ASU), are presented. The results of tests of the devices, which are the part of the software defined radio platform (SDRP), and antenna switching unit, confirmed the possibility of using selected components in the final solution.

APA, Harvard, Vancouver, ISO, and other styles

5

Estrela, Vania V. "Why Software-Defined Radio (SDR) Matters in Healthcare?" Medical Technologies Journal 3, no. 3 (November 11, 2019): 421–29. http://dx.doi.org/10.26415/2572-004x-vol3iss3p421-429.

Full text

APA, Harvard, Vancouver, ISO, and other styles

6

Sotyohadi, Sotyohadi, and Irrine Budi Sulistiawati. "DESAIN LOW NOISE TRANSCEIVER 7 MHZ BERBASIS SOFTWARE DEFINED RADIO (SDR)." Jurnal Mnemonic 2, no. 1 (December 14, 2019): 73–78. http://dx.doi.org/10.36040/mnemonic.v2i1.55.

Full text

Abstract:

Software defined radio (SDR) adalah paradigma baru dalam desain perangkat komunikasi wireless. Teknologi SDR saat ini digunakan secara luas pada bidang telekomunikasi komersil seperti satelit komunikasi, telepon bergerak dan banyak digunakan pada kalangan komunitas radio amatir. SDR adalah suatu sistem radio dimana komponen-komponennya yang biasanya di bangun oleh perangkat keras (mixer, filter, modulator, demodulator dll) digantikan fungsinya oleh perangkat lunak. Software defined radio saat ini sangat dikenal dikalangan komunitas radio amatir di seluruh dunia. Berbagai desain transceiver berbasis SDR yang bekerja pada band high frequency (HF) telah banyak diaplikasikan, dan berbagai perangkat lunak aplikasi SDR telah dikembangkan. Perangkat transceiver berbasis SDR digemari oleh komunitas radio amatir dikarenakan rangkaian elektroniknya yang sederhana. Namun dari kelebihan tersebut muncul permasalahan yang sering dijumpai adalah noise pada penerima yang tinggi dan sensitivitas rendah. Dengan latar belakang permasalahan tersebut, maka pada penelitian ini dirancanglah suatu low noise transceiver 7 MHz berbasis software defined radio (SDR). Metode yang digunakan dalam mengurangi noise adalah dengan pemisahan grounding dari rangkaian digital, analog dan penguat RF serta pemilihan chip Tayloe detector yang memiliki nilai resistansi switch yang rendah yaitu 4 ohm. Berdasarkan hasil pengujian dengan menggunakan integrated circuit (IC) yang memiliki nilai resistansi switching yang rendah 4 ohm didapatkan kinerja transceiver yang lebih baik, dimana penerimaan lebih sensitive dan memiliki noise yang lebih rendah.

APA, Harvard, Vancouver, ISO, and other styles

7

Yang, Yun Long, You Rong Lu, Qian Cai, and Ying Yong Lai. "Design of Software Defined Radio Platform Resource Model Based on SCA." Applied Mechanics and Materials 347-350 (August 2013): 3934–39. http://dx.doi.org/10.4028/www.scientific.net/amm.347-350.3934.

Full text

Abstract:

Software Defined Radio (SDR) platform resource model is the description and organization of the SDR platform resource. Its the foundation of the SDR platform resource management. Through these years, the Software Communication Architecture (SCA) has becoming the most famous specification for SDR, which standardizes the description for the SDR platform resource. Aiming at the shortages of the resource model in SCA, this paper discusses a SDR platform resource model, proposes a transfer port model and a connection model, designs a nested data model for the SDR platform resource, and a plane graph model which is easy to analyze and process.

APA, Harvard, Vancouver, ISO, and other styles

8

Teronpi, Khushboo, Kandarpa Kumar Sarma, Aradhana Misra, and Manasjyoti Bhuyan. "DTW based Modulation Detection- Verification using Software Defined Radio." WSEAS TRANSACTIONS ON COMMUNICATIONS 20 (August 10, 2021): 133–38. http://dx.doi.org/10.37394/23204.2021.20.18.

Full text

Abstract:

Modulation detection is one of the major tasks of an intelligent receiver in a software defined radio (SDR). It is an intermediate step between signal detection and demodulation. In this paper we present the modulation detection based on Dynamic Time Warping (DTW) algorithm. Here the types of modulation that we use are QPSK, 8-PSK, 16-QAM and 64-QAM. The whole test and verification has been done with the help of SDR platform. After the test and trials of all the modulation schemes, it is observed that DTW provides a good efficiency with the accuracy of 93.75%.

APA, Harvard, Vancouver, ISO, and other styles

9

Tsoeunyane, Lekhobola, Simon Winberg, and Michael Inggs. "Software-Defined Radio FPGA Cores: Building towards a Domain-Specific Language." International Journal of Reconfigurable Computing 2017 (2017): 1–28. http://dx.doi.org/10.1155/2017/3925961.

Full text

Abstract:

This paper reports on the design and implementation of an open-source library of parameterizable and reusable Hardware Description Language (HDL) Intellectual Property (IP) cores designed for the development of Software-Defined Radio (SDR) applications that are deployed on FPGA-based reconfigurable computing platforms. The library comprises a set of cores that were chosen, together with their parameters and interfacing schemas, based on recommendations from industry and academic SDR experts. The operation of the SDR cores is first validated and then benchmarked against two other cores libraries of a similar type to show that our cores do not take much more logic elements than existing cores and that they support a comparable maximum clock speed. Finally, we propose our design for a Domain-Specific Language (DSL) and supporting tool-flow, which we are in the process of building using our SDR library and the Delite DSL framework. We intend to take this DSL and supporting framework further to provide a rapid prototyping system for SDR application development to programmers not experienced in HDL coding. We conclude with a summary of the main characteristics of our SDR library and reflect on how our DSL tool-flow could assist other developers working in SDR field.

APA, Harvard, Vancouver, ISO, and other styles

10

da Silva, Fabrício A. B., David F. C. Moura, and Juraci F. Galdino. "Classes of Attacks for Tactical Software Defined Radios." International Journal of Embedded and Real-Time Communication Systems 3, no. 4 (October 2012): 57–82. http://dx.doi.org/10.4018/jertcs.2012100104.

Full text

Abstract:

This survey presents a classification of attacks that Software Communications Architecture (SCA) compliant Software Defined Radios (SDR) can suffer. This paper also discusses how attack mitigation strategies can impact the development of a SCA-compliant software infrastructure and identifies several research directions related to SDR security. The SCA standard was originally proposed by the Joint Tactical Radio System program (JTRS), which is a program for the development of military tactical radios sponsored by the US Department of Defense. The classification presented in this paper is based on attack results on the radio set, which can also be associated with the adversary’s objectives when planning an intrusion. The identification of classes of attacks on a radio, along with the associated threats and vulnerabilities, is the first step in engineering a secure SDR system. It precedes the identification of security requirements and the development of security mechanisms. Therefore, the identification of classes of attacks is a necessary step for the definition of realistic and relevant security requirements.

APA, Harvard, Vancouver, ISO, and other styles

11

Tan, Soon Heng Mavric, and Chai Kiat Yeo. "GPS Location Spoofing and FM Broadcast Intrusion Using Software-Defined Radio." International Journal of Interdisciplinary Telecommunications and Networking 12, no. 4 (October 2020): 104–17. http://dx.doi.org/10.4018/ijitn.2020100108.

Full text

Abstract:

This paper makes use of a simple and inexpensive software-defined radio (SDR) to demonstrate the potential threats posed to wireless communication. SDR is a radio communication system where components that are traditionally implemented in hardware are being replaced via software running on computing devices. The authors make use of a simple SDR to demonstrate how local disruption to wireless communication can be easily carried out. In particular, the authors show how FM radio broadcast can be hijacked and the spoofing of GPS location signals using a single SDR on a local basis as well as how Google Maps apps on an Android phone can be fooled by the spoofed GPS data. The authors also show how an ‘autonomous' car can be re-routed via emulation with a rigged up remote control toy car. The spoofing of GPS signals is a potential threat to all GPS-based applications, especially when powerful radios are used. The security threats on GPS-based navigation especially for drones and autonomous vehicles are real.

APA, Harvard, Vancouver, ISO, and other styles

12

Surducan, V., M. Moudgill, G. Nacer, E. Surducan, P. Balzola, J. Glossner, S. Stanley, Meng Yu, and D. Iancu. "The Sandblaster Software-Defined Radio Platform for Mobile 4G Wireless Communications." International Journal of Digital Multimedia Broadcasting 2009 (2009): 1–9. http://dx.doi.org/10.1155/2009/384507.

Full text

Abstract:

We present a tier 2 Software Defined-Radio platform (SDR), built around the latest Sandbridge Technologies' multithreaded Digital Signal Processor (DSP) SB3500, along with the description of major design steps taken to ensure the best radio link and computational performance. This SDR platform is capable of executing 4G wireless communication standards such as WiMAX Wave 2, WLAN 802.11 g, and LTE. Performance results for WiMAX are presented in the conclusion section.

APA, Harvard, Vancouver, ISO, and other styles

13

Magnuski, Mirosław, Maciej Surma, and Dariusz Wójcik. "Broadband Input Block of Radio Receiver for Software-Defined Radio Devices." International Journal of Electronics and Telecommunications 60, no. 3 (October 28, 2014): 233–38. http://dx.doi.org/10.2478/eletel-2014-0029.

Full text

Abstract:

Abstract In the paper a cost-effective input block of the SDR receiver for 0.9 — 2.4 GHz frequency band built of capacitive-tuned selective amplifier and broadband Vivaldi antenna is presented. The applied selective amplifier consists of three identical sections of tunable filters and two stages of monolithic broadband amplifiers. The single filter section proposed by the authors, due to its ability to absorb parasitic inductances of varicap diodes, simplifies usage of encapsulated varicap diodes in design of tunable in broad band selective filters dedicated to input stages of the receivers. Moreover, proposed filter section has small variation of in-band insertion loss in comparison to varicap-tuned filters built of coupled transmission lines which are commonly applied in input blocks of the microwave receivers. The described selective amplifier could be easily integrated on a single substrate with the Vivaldi antenna which is a cost effective way of fabrication of the tunable in broad band input block of a receiver that has desired gain, selectivity and directivity of the antenna.

APA, Harvard, Vancouver, ISO, and other styles

14

P., Sowjanya, and Satyanarayana P. "Implementation of Transceiver module for SDR system using ADALM PLUTO platform." International Journal of Engineering & Technology 7, no. 4.6 (September 25, 2018): 279. http://dx.doi.org/10.14419/ijet.v7i4.6.20490.

Full text

Abstract:

Software Defined Radio (SDR) provides a comprehensive radio communication platform, based on which new technology can be used through software update. This leads to a large-scale reduction in expansion costs and enables the product to maintain technology development. The SDR platform can be set up with an open, standard, and programmable hardware platform, based on which the functions of the radio can be perceived by adding appropriate software modules. In this platform, the transformation and expansion of the radio functions are done in a software version without the need for a modification of the equipment. Such software radio station can easily communicate with the current or upcoming radio stations. In this article, we analyze SDR evolution and various platforms and implement various modulation techniques with the aim of successfully transferring a message wirelessly over-the-air using ADALM-PLUTO SDR platform by Analog Devices.

APA, Harvard, Vancouver, ISO, and other styles

15

Bleiders, M., O. Antyufeyev, O. Patoka, A. Orbidans, A. Aberfelds, J. Steinbergs, V. Bezrukovs, and I. Shmeld. "Spectral Line Registration Backend Based on USRP X300 Software Defined Radio." Journal of Astronomical Instrumentation 09, no. 02 (June 2020): 2050009. http://dx.doi.org/10.1142/s2251171720500099.

Full text

Abstract:

This paper presents implementation of spectrometer based on off-the-shelf software defined radio (SDR) Ettus Research USRP X300 equipped with TwinRX daughterboard. Parallelized software, employing Fast Fourier Transform (FFT), is developed which allows two channel spectrum processing in real time with bandwidths up to 50[Formula: see text]MHz per channel, sample resolution of 14 bits and FFT lengths up to 32k points. Measured Allan stability time of the spectrometer is at least 750 sin laboratory environment. Software has network server-type interface that allows to conveniently integrate the spectrometer in radio telescope observation control and monitoring system with versatility of SDR allowing to implement various observation modes, for example, total power detection functionality with high frequency selectivity, which allows to carry continuum amplitude calibration in presence of near-by radio frequency interference. Presented spectrometer has been successfully integrated and used at RT-32 and RT-16 radio telescopes of Ventspils International Radio Astronomy Centre.

APA, Harvard, Vancouver, ISO, and other styles

16

Heyne, B., and J. Götze. "Cordic based algorithms for software defined radio (SDR) baseband processing." Advances in Radio Science 4 (September 4, 2006): 179–84. http://dx.doi.org/10.5194/ars-4-179-2006.

Full text

Abstract:

Abstract. This paper presents two Cordic based algorithms which may be used for digital baseband processing in OFDM and/or CDMA based communication systems. The first one is a linear least squares based multiuser detector for CDMA incorporating descrambling and despreading. The second algorithm is a pure Cordic based FFT implementation. Both algorithms can be implemented using solely Cordic based architectures (e.g. coprocessors or ASIPs). The algorithms exactly fit the needs of a multistandard terminal as they both are freely parameterizable. This regards to the accuracy of the results as well as to the parameters of the performed function (e.g. size of the FFT).

APA, Harvard, Vancouver, ISO, and other styles

17

Yang, Taeyoung, William A. Davis, Warren L. Stutzman, S. M. Shajedul Hasan, Randall Nealy, Carl B. Dietrich, and Jeff H. Reed. "Antenna design strategy and demonstration for software-defined radio (SDR)." Analog Integrated Circuits and Signal Processing 69, no. 2-3 (September 15, 2011): 161–71. http://dx.doi.org/10.1007/s10470-011-9775-6.

Full text

APA, Harvard, Vancouver, ISO, and other styles

18

Naik, Amit, and K. Krishna Naik. "Data Processing in Software Defined Radio (SDR) based Multiband Transceiver." International Journal of Computer Applications 183, no. 12 (June 30, 2021): 34–36. http://dx.doi.org/10.5120/ijca2021921431.

Full text

APA, Harvard, Vancouver, ISO, and other styles

19

Stamou, Adamantia, Grigorios Kakkavas, Konstantinos Tsitseklis, Vasileios Karyotis, and Symeon Papavassiliou. "Autonomic Network Management and Cross-Layer Optimization in Software Defined Radio Environments." Future Internet 11, no. 2 (February 3, 2019): 37. http://dx.doi.org/10.3390/fi11020037.

Full text

Abstract:

The demand for Autonomic Network Management (ANM) and optimization is as intense as ever, even though significant research has been devoted towards this direction. This paper addresses such need in Software Defined (SDR) based Cognitive Radio Networks (CRNs). We propose a new framework for ANM and network reconfiguration combining Software Defined Networks (SDN) with SDR via Network Function Virtualization (NFV) enabled Virtual Utility Functions (VUFs). This is the first approach combining ANM with SDR and SDN via NFV, demonstrating how these state-of-the-art technologies can be effectively combined to achieve reconfiguration flexibility, improved performance and efficient use of available resources. In order to show the feasibility of the proposed framework, we implemented its main functionalities in a cross-layer resource allocation mechanism for CRNs over real SDR testbeds provided by the Orchestration and Reconfiguration Control Architecture (ORCA) EU project. We demonstrate the efficacy of our framework, and based on the obtained results, we identify aspects that can be further investigated for improving the applicability and increasing performance of our broader framework.

APA, Harvard, Vancouver, ISO, and other styles

20

Marinho, Diogo, Raul Arruela, Tiago Varum, and João N. Matos. "Software-Defined Radio Beamforming System for 5G/Radar Applications." Applied Sciences 10, no. 20 (October 15, 2020): 7187. http://dx.doi.org/10.3390/app10207187.

Full text

Abstract:

Based on the flexibility of software-defined radio (SDR) techniques applied to an array of antennas, this article presents a beamforming architecture designed to operate in millimeter-wave bands (28 GHz), with possible applications in radar and 5G systems. The system structure, including its main constituents such as the radio frequency (RF) frontend modules, the radiating elements as well as the baseband processing on the host computer are widely described. Beamforming is achieved by digitally controlling the signals that feed the antennas. The experimental measurements performed in an anechoic chamber validate the proposed approach.

APA, Harvard, Vancouver, ISO, and other styles

21

Cummings, M., and S. Heath. "Mode switching and software download for software defined radio: the SDR Forum approach." IEEE Communications Magazine 37, no. 8 (1999): 104–6. http://dx.doi.org/10.1109/35.783132.

Full text

APA, Harvard, Vancouver, ISO, and other styles

22

Bargarai, Faiq A. Mohammed, Adnan Mohsin Abdulazeez, Volkan Müjdat Tiryaki, and Diyar Qader Zeebaree. "Management of Wireless Communication Systems Using Artificial Intelligence-Based Software Defined Radio." International Journal of Interactive Mobile Technologies (iJIM) 14, no. 13 (August 14, 2020): 107. http://dx.doi.org/10.3991/ijim.v14i13.14211.

Full text

Abstract:

The wireless communication system was investigated by novel methods, which produce an optimized data link, especially the software-based methods. Software-Defined Radio (SDR) is a common method for developing and implementing wireless communication protocols. In this paper, SDR and artificial intelligence (AI) are used to design a self-management communication system with variable node locations. Three affected parameters for the wireless signal are considered: channel frequency, bandwidth, and modulation type. On one hand, SDR collects and analyzes the signal components while on the other hand, AI processes the situation in real-time sequence after detecting unwanted data during the monitoring stage. The decision was integrated into the system by AI with respect to the instantaneous data read then passed to the communication nodes to take its correct location. The connectivity ratio and coverage area are optimized nearly double by the proposed method, which means the variable node location, according to the peak time, increases the attached subscriber by a while ratio

APA, Harvard, Vancouver, ISO, and other styles

23

Yang, Jing Jing, Ming Huang, Jiang Yu, Lin Li, and Ling Li. "USRP: A Flexible Platform for Spectrum Monitoring." Applied Mechanics and Materials 610 (August 2014): 233–40. http://dx.doi.org/10.4028/www.scientific.net/amm.610.233.

Full text

Abstract:

Software-defined radio (SDR) is a kind of radio communication system which attempts to place much or most of the complex signal handling involved in receivers and transmitters into the digital style. As wireless technologies become ubiquitous, SDR are gaining popularity. In this work, we introduce the SDR platform USRP with emphasizes on hardware components, signal processing procedure and the supporting software. A radio spectrum monitoring system based on USRP and LabVIEW is designed and implemented, and web publishing of the real time spectrum is realized.

APA, Harvard, Vancouver, ISO, and other styles

24

Iancu, Daniel, John Glossner, Gary Nacer, Stuart Stanley, Vitaly Kolashnikov, and Joe Hoane. "Software defined radio platform with wideband tunable front end." International Journal of Engineering & Technology 4, no. 1 (January 11, 2015): 97. http://dx.doi.org/10.14419/ijet.v4i1.4160.

Full text

Abstract:

The paper presents a Software Defined Radio (SDR) development platform with wideband tunable RF (Radio Frequency) front end. The platform is based on the SB3500 Multicore Multithreaded Vector Processor and it is intended to be used for a wide variety of communication protocols as: Time Division Duplexing/Frequency Division Duplexing Long Term Evolution (TDD/FDD LTE), Global Positioning System (GPS), Global System for Mobile/General Packet Radio Service (GSM/GPRS), Wireless Local Area Network (WLAN), Legacy Worldwide Interoperability for Microwave Access (WiMAX). As an example, we describe briefly the implementation of the LTE TDD/FDD communication protocol. As far as we know, this is the only LTE category 1 communication protocol entirely developed and executed in software (SW), without any hardware (HW) accelerators.

APA, Harvard, Vancouver, ISO, and other styles

25

Suresh Babu, Kolluru, and Srikanth Vemuru. "A Low-Cost Software Defined Radio Based Cognitive Radio Test-Bed for LTE Networks." International Journal of Engineering & Technology 7, no. 3.1 (August 4, 2018): 51. http://dx.doi.org/10.14419/ijet.v7i3.1.16797.

Full text

Abstract:

In this work, we present a low-cost implementation of a Cognitive Radio (CR) test-bed for LTE and LTE-Advanced (LTE-A) Networks. The test-bed setup is implemented using highly integrated Software Defined Radio (SDR) platforms which are well suited for wireless communication. Each transceiver can be configured to work as a primary (resp. secondary) eNodeB or a primary (resp. secondary) user in a Heterogeneous Cognitive Radio framework. In this context, we study the problem of spectrum management in an LTE based heterogeneous network and propose simple distributed algorithms which the secondary eNodeB can employ to efficiently manage the spectral opportunities that arise in such a network. Experimental validation show significant improvement in the secondary link throughput.

APA, Harvard, Vancouver, ISO, and other styles

26

Kopiev, А., I. Zemlyanov, and D. Kuznetsov. "Application of software defined radio (SDR) technologies in shipboard communication systems." Transactions of the Krylov State Research Centre 1, S-I (2018): 177–83. http://dx.doi.org/10.24937/2542-2324-2018-1-s-i-177-183.

Full text

APA, Harvard, Vancouver, ISO, and other styles

27

Schmidt, Erick, Devasena Inupakutika, Rahul Mundlamuri, and David Akopian. "SDR-Fi: Deep-Learning-Based Indoor Positioning via Software-Defined Radio." IEEE Access 7 (2019): 145784–97. http://dx.doi.org/10.1109/access.2019.2945929.

Full text

APA, Harvard, Vancouver, ISO, and other styles

28

Blech, M. D., A. T. Ott, P. Neumeier, M. Möller, and T. F. Eibert. "A reconfigurable software defined ultra-wideband impulse radio transceiver." Advances in Radio Science 8 (September 30, 2010): 67–73. http://dx.doi.org/10.5194/ars-8-67-2010.

Full text

Abstract:

Abstract. An ultra-wideband (UWB) software defined radio (SDR) implementation is presented. The developed impulse radio (IR) transceiver employs first order bandpass (BP) sampling at a conversion frequency which is four times the channel bandwidth. The subsampling architecture directly provides the RF signal avoiding any non-ideal mixer stages and reduces the requirements of digital signal processing implemented in a field programmable gate array (FPGA). The transmitter consists basically of a multi-Nyquist digital to analog converter (DAC), whereas the implemented matched filter (MF) receiver prototype employs a standard digitizing oscilloscope. This design can be adaptively reconfigured in terms of modulation, data rate, and channel equalization. The reconfigurable design is used for an extensive performance analysis of the quadrature phase shift keying (QPSK) modulation scheme investigating the influence of different antennas, amplifiers, narrowband interferers as well as different equalizer lengths. Even for distances up to 7 m in a multipath environment robust communication was achieved.

APA, Harvard, Vancouver, ISO, and other styles

29

Geng, Yong, Si Long Wu, and Fang Kun Jia. "The Research of Chirp Signal Based on GNU Radio and USRP." Applied Mechanics and Materials 336-338 (July 2013): 1765–70. http://dx.doi.org/10.4028/www.scientific.net/amm.336-338.1765.

Full text

Abstract:

This paper put forward a research of the chirp signal and its generated method. The research was based on a software-defined radio (SDR) system, which was composed of GNU Radio and Universal Software Radio Peripheral (USRP). It introduced the chirp signal and design algorithm to show how to generate the chirp signal based on DDS technique. And it provided two platforms including the FPGA platform and SDR platform to generate the chirp waveforms. Finally, it analyzed the difference between the two platforms. From the waveforms using these two platforms displayed in oscilloscope, it found that the results based on SDR were better. And it demonstrated that advantages of GNU Radio and USRP.

APA, Harvard, Vancouver, ISO, and other styles

30

Samijayani, Octarina Nur, Suci Rahmatia, Vita Nur Septiyani, and Ibrahim Ibrahim. "Perancangan Software Defined Radar Untuk Radar Pulsa dan Radar FMCW." JURNAL Al-AZHAR INDONESIA SERI SAINS DAN TEKNOLOGI 3, no. 3 (December 20, 2017): 144. http://dx.doi.org/10.36722/sst.v3i3.220.

Full text

Abstract:

Abstrak - Software Defined Radio (SDR) merupakan sistem komunikasi radio berbasis software yang saat ini mulai banyak diimplementasikan dan menunjukkan potensi yang besar. Tingginya efisiensi dalam hal biaya dibandingkan dengan sistem konvensional berbasis perangkat menjadi motivasi bagi berkembangnya konsep ini diberbagai aplikasi. Salah satu aplikasi yang dapat diterapkan menggunakan konsep SDR adalah sistem komunikasi Radar, Software Defined Radar (SDRadar). Radar berbasis software diharapkan dapat menurunkan biaya pembuatan hardware, serta dapat mendukung perancangan Radar yang dapat melakukan banyak fungsi dan lebih flexible untuk melakukan konfigurasi ulang. Radar multifungsi dapat dibangun dengan berbasis software yakni mulai dari pengaturan jenis sinyal, frekuensi operasi, hingga pada tahap pemrosesan sinyal radar. Penelitian ini merancang FMCW Radar menggunakan platform SDR. Simulasi dilakukan dengan mencoba posisi objek yang berbeda, dengan nilai SNR yang berbeda. Hasil simulasi menunjukkan implementasi konsep SDR untuk Radar dapat mendukung fleksibilitas rekonfigurasi parameter Radar. Untuk spesifik radar yang disimulasikan diperoleh bahwa SNR yang baik untuk dapat mendeteksi jarak object dengan baik (error <11%) ialah diatas 20dB. Radar dengan SNR dibawah 20 dB tidak dapat mendeteksi jarak objek dengan baik, dimana error melebihi 50%. Radar Pulsa disimulasikan menggunakan pernagkat USRP dengan factor pengkoreksi/kalibrasi 1.376, sedangkan untuk Radar FMCW masih terdapat error sebsar 70.8%. Kata Kunci : SDR, SDRadar, FMCW Radar Absract - Software Defined Radio (SDR) is a software-based radio communication system that is currently implemented and show great potential to be developed. The efficiency in terms of cost as compared to conventional systems which based on devices is a motivation for the development of this concept in various applications. One of the applications that can be implemented utilizing the concept of SDR is Software Defined Radar (SDRadar). Radar with software based is expected to have lower cost and support the feasibility of Radar to perform in many functions and more flexible to be reconfigured. This research implement the FMCW Radar using SDR platform. Simulations carried out by trying different object positions, with different SNR values. The simulation results show the implementation concept of SDR's Radar can support the flexibility of Radar parameter reconfiguration. For specific simulated radar shows that a suitable SNR value to detect the distance of object (error <11%) is above 20dB. Radar with SNR under 20 dB could not detect the distance of objects well, where the error exceeds 50%. Radar Pulse also simulated using USRP with factor correction or calibration factor of 1,376, while for FMCW with USRP still obtain high error of about 70.8%. Keywords: SDR, SDRadar, FMCW Radar.

APA, Harvard, Vancouver, ISO, and other styles

31

Wang, Junchao, Kaining Han, Zhiyu Chen, Anastasios Alexandridis, Zeljko Zilic, Yu Pang, and Jinzhao Lin. "A Software Defined Radio Evaluation Platform for WBAN Systems." Sensors 18, no. 12 (December 19, 2018): 4494. http://dx.doi.org/10.3390/s18124494.

Full text

Abstract:

In recent years, the Wireless Body Area Network (WBAN) concept has attracted significant academic and industrial attention. WBAN specifies a network dedicated to collecting personal biomedical data from advanced sensors that are then used for health and lifestyle purposes. In 2012, the 802.15.6 WBAN standard was released by the Institute of Electrical and Electronics Engineers (IEEE), which regulates and specifies the configurations of WBAN. Compared to the prevailing wireless communication technologies such as Bluetooth and ZigBee, the WBAN standard has the advantages of ultra-low power consumption, high reliability, and high-security protection while transmitting sensitive personal data. Based on the standard specification, several implementations have been published. However, in terms of evaluation, different designs were implemented in proprietary evaluation environments, which may lead to unfair comparison. In this paper, a Software-Defined Radio (SDR) evaluation platform for WBAN systems is proposed to evaluate the RF channel specified in the IEEE 802.15.6 standard. A narrowband communication protocol demonstration with a security scheme in WBAN has been performed to successfully validate the design in the proposed evaluation platform.

APA, Harvard, Vancouver, ISO, and other styles

32

Ahmed, Reem Hashim, and Ekhlas Kadhum Hamza. "Designing a Secure Software-Defined Radio Transceiver using the Logistic Map." Journal of Engineering 27, no. 6 (June 1, 2021): 59–72. http://dx.doi.org/10.31026/j.eng.2021.06.05.

Full text

Abstract:

The need to exchange large amounts of real-time data is constantly increasing in wireless communication. While traditional radio transceivers are not cost-effective and their components should be integrated, software-defined radio (SDR) ones have opened up a new class of wireless technologies with high security. This study aims to design an SDR transceiver was built using one type of modulation, which is 16 QAM, and adding a security subsystem using one type of chaos map, which is a logistic map, because it is a very simple nonlinear dynamical equations that generate a random key and EXCLUSIVE OR with the originally transmitted data to protect data through the transmission. At the receiver, the data will be recovered using the same key, the received data is the same at the sender, so this result shows that the transceiver work normally and calculates the BER at the end each time the SNR changed. Our results indicate that the designed transmitter and receiver perform as usual and finally calculate the bit error rate when the signal to noise ratio is changed. The evaluation of BER indicates that simulated values are smaller than theoretical ones obtained using the BER tool. when SNR is equivalent to 7 dB, the theoretical and simulated BER obtained is 0.01695 and 0.00199, respectively. Designing soft defined radio transceiver using MATLAB R 2011a and system generator ISE14.1/SIMULINK.

APA, Harvard, Vancouver, ISO, and other styles

33

Murthy, C. Srinivasa, and K. Sridevi. "Optimized DA-reconfigurable FIR filters for software defined radio channelizer applications." Circuit World 47, no. 3 (June 8, 2021): 252–61. http://dx.doi.org/10.1108/cw-11-2020-0332.

Full text

Abstract:

Purpose In this paper, the authors present different methods for reconfigurable finite impulse response (RFIR) filter design. Distributed arithmetic (DA)-based reconfigurable FIR filter design is suitable for software-defined radio (SDR) applications. The main contribution of reconfiguration is reuse of registers, multipliers, adders and to optimize various parameters such as area, power dissipation, speed, throughput, latency and hardware utilizations of flip-flops and slices. Therefore, effective design of building blocks will be optimized for RFIR filter with all the above parameters. Design/methodology/approach The modified, direct form register structure of FIR filter contributes the reuse concept and allows utilization of less number of registers and parallel computation operations. The disadvantage of DA and other conventional methods is delay increases proportionally with filter length. This is due to different partial products generated by adders. The usage of adder and multipliers in DA-FIR filter restricts the area and power dissipation because of their complexity of generation of sum and carry bits. The hardware implementation time of an adder can be reduced by parallel prefix adder (PPA) usage based on Ling equation. PPA uses shift-add multiplication, which is a repetitive process of addition, and this process is known as Bypass Zero feed multiplicand in direct multiplication, and the proposed technique optimizes area-power product efficiently. The modified DA (MDA)-based RFIR filter is designed for 64 taps filter length (N). The design is developed by using Verilog hardware description language and implemented on field-programmable gate array. Also, this design validates SDR channel equalizer. Findings Both RFIR and SDR are integrated as single system and implemented on Artix-7 development board of XC7A100tCSG324 and exploited the advantages in area-delay, power-speed products and energy efficiency. The theoretical and practical comparisons have been carried out, and the results are compared with existing DA-RFIR designs in terms of throughput, latency, area-delay, power-speed products and energy efficiency, which are improved by 14.5%, 23%, 6.5%, 34.2% and 21%, respectively. Originality/value The DA-based RFIR filter is validated using Chipscope Pro software tool on Artix-7 FPGA in Xilinx ISE design suite and compared constraint parameters with existing state-of-art results. It is also tested the filtering operation by applying the RFIR filter on Audio signals for removal of noisy signals and it is found that 95% of noise signals are filtered effectively.

APA, Harvard, Vancouver, ISO, and other styles

34

Mężyk, Oskar, Michał Doligalski, and Ryszard Rybski. "Measurements of Signal Delays in Software Defined Radio with Use of GNSS Modules." Annual of Navigation 26, no. 1 (December 1, 2019): 98–105. http://dx.doi.org/10.1515/aon-2019-0010.

Full text

Abstract:

Abstract In the work a method of latency measurement in software defined radio (SDR) is proposed and validated. The test setup uses customer grade GNSS modules as reference time sources and enables relative delay calculation between signals received directly and those bypassed through SDR platform. The method is hardware agnostic in a sense, that it does not involve any custom software or hardware modifications. Tests that compare reported carrier-to-noise ratio and positioning errors were performed to prove functionality of such system. Additionally, authors measured several gnuradio blocks with respect to their impact on total latency introduced into signal path. All tests were performed on a bladeRF low-cost RF front-end. Minimum observed latency for the signal was below 10 ms.

APA, Harvard, Vancouver, ISO, and other styles

35

Moura, David Fernandes Cruz, Fabricio Alves Barbosa da Silva, and Juraci Ferreira Galdino. "Case Studies of Attacks over Adaptive Modulation Based Tactical Software Defined Radios." Journal of Computer Networks and Communications 2012 (2012): 1–9. http://dx.doi.org/10.1155/2012/703642.

Full text

Abstract:

This paper presents case studies of attacks aimed at tactical software defined radios based on a classification with the most common sources of vulnerabilities, classes of attacks, and types of intrusions that military radio sets may suffer. Besides that, we also describe how attack mitigation strategies can impact the development of SDR infrastructures. By using such approach, we identify several possible sources of vulnerabilities, attacks, intrusions, and mitigation strategies, illustrating them onto typical tactical radio network deployment scenarios, as an initial and necessary step for the definition of realistic and relevant security requirements for military software defined radio applications.

APA, Harvard, Vancouver, ISO, and other styles

36

Budroweit, Mueller, Jaksch, Alía, Coronetti, and Koelpin. "In-Situ Testing of a Multi-Band Software-Defined Radio Platform in a Mixed-Field Irradiation Environment." Aerospace 6, no. 10 (September 24, 2019): 106. http://dx.doi.org/10.3390/aerospace6100106.

Full text

Abstract:

This paper presents an in-situ test concept for a multi-band software-defined radio (SDR) platform in a mixed-field radiation environment. Special focus is given to the complex automated test setup with respect to the requirements of the irradiation facility. Additionally, selected test results of a system-level evaluation are presented and discussed. For the verification of the mixed-field radiation environment, the software-defined radio (SDR) was also tested under proton irradiation. The cross-sections for the observed single event effects are compared and show similar results.

APA, Harvard, Vancouver, ISO, and other styles

37

Raev, A. S., A. N. Kopysov, and V. V. Khvorenkov. "On the Question of Choice of Software Tools for Modeling Radio Systems." Bulletin of Kalashnikov ISTU 22, no. 3 (October 9, 2019): 72. http://dx.doi.org/10.22213/2413-1172-2019-3-72-81.

Full text

Abstract:

Ключевым трендом современных радиотехнических систем является переход к цифровым технологиям. Особенно ярко это выражено в процессе развития и широкого внедрения технологии программно-определяемых радиосистем, или иначе software-defined radio(SDR). В результате формирования данной технологии появилась возможность разработки современных радиолокационных систем, используя программные модели, базирующиеся на технологии SDR .В работе рассматривается вопрос выбора разработчиком программных инструментов для моделирования и проектирования радиолокационных систем. Для ответа на данный вопрос выполняется оценка двух сред программирования SDR-систем – Lab VIEW и GNU Radio, производится их общие описание. Рассматриваются их структуры, модели основных компонентов, интерфейсов, а также системы программного обеспечения и системные требования.Приведены примеры использования инструментов в исследовании радиолокационных систем на основе сигнала с линейной частотной модуляцией. На основе алгоритма генерации такого сигнала разработаны модели генераторов и проведена оценка работы исследуемых сред программирования SDR. Построены графики генерируемого сигнала с выбранными параметрами как во временной, так и в частотной областях. В процессе работы и конфигурации примеров проведен анализ вычислительных возможностей и временных затрат, сопряженных с работой оцениваемых сред программирования SDR.Сформулированы основные достоинства; к их числу относятся универсальность и доступность, а также недостатки, включающие затраты времени на программирование и отсутствие гибкости проектов, описанных оболочек, проведено их сравнение в совокупности между собой.

APA, Harvard, Vancouver, ISO, and other styles

38

Alam, Md Zahangir, and M. Abdus Sobhan. "Design of Future Software Defined Radio (SDR) for All-IP Heterogeneous Network." Recent Patents on Signal Processing 2, no. 1 (February 1, 2010): 12–21. http://dx.doi.org/10.2174/1877612401002010012.

Full text

APA, Harvard, Vancouver, ISO, and other styles

39

Patil, Rupali B., K. D. Kulat, and A. S. Gandhi. "SDR Based Energy Detection Spectrum Sensing in Cognitive Radio for Real Time Video Transmission." Modelling and Simulation in Engineering 2018 (2018): 1–10. http://dx.doi.org/10.1155/2018/2424305.

Full text

Abstract:

Cognitive radio is a budding approach which helps to address the imminent spectrum crisis by dynamic spectrum allocation and support the increased data traffic with an intelligent mechanism of Software Defined Radio (SDR). SDR avoid the frequent modifications in the hardware structure with the use of software defined protocols. The main novelty of the paper is an effective implementation of CR using energy based spectrum sensing method which is done on GNU radio for real time transmission of video as a primary user. From evaluation results, one can see that the proposed system can indicate the frequency band occupancy by setting the detection output. Detection output changes to one with start of video transmission. Motivation behind this work is design of a spectrum sensing method which is best suited for detection of white spaces during the transmission of video as a primary user on SDR platform.

APA, Harvard, Vancouver, ISO, and other styles

40

Fomin, Vladislav V., Artūras Medeišis, and Daiva Vitkutė-Adžgauskienė. "IN SEARCH OF SUSTAINABLE BUSINESS MODELS FOR COGNITIVE RADIO EVOLUTION." Technological and Economic Development of Economy 18, no. 2 (June 29, 2012): 230–47. http://dx.doi.org/10.3846/20294913.2012.663415.

Full text

Abstract:

In this paper we examine the emerging industry of Cognitive Radio/Software Defined Radio (CR/SDR), a sector which in some ways seconds the industry structure of the cellular mobile communications, while bearing distinctive characteristics. Any radio telecommunications infrastructure depends on scarce resources – radio frequency spectrum – that require policy decisions for allocation to specific countries and services. CR/SDR may constitute a new paradigm in radio communications as it may completely or partially eliminate the role of the regulator in minutiae of spectrum access authorization. In this paper, we review scarce literature on CR/SDR to analyze the relationships between political, technological and economic factors in order to identify drivers and barriers to the emergence of new techno-economic paradigm of CR/SDR. Our discussion of business opportunities for CR/SDR includes analysis of applicable spectrum access policies and identification of those of them, which would be most fertile for the development of future CR/SDR business.

APA, Harvard, Vancouver, ISO, and other styles

41

Das, Diptashree, Mehdi Nasrollahpour, Ziyue Xu, Mohsen Zaeimbashi, Isabel Martos-Repath, Ankit Mittal, Adam Khalifa, et al. "A Radio Frequency Magnetoelectric Antenna Prototyping Platform for Neural Activity Monitoring Devices with Sensing and Energy Harvesting Capabilities." Electronics 9, no. 12 (December 11, 2020): 2123. http://dx.doi.org/10.3390/electronics9122123.

Full text

Abstract:

This article describes the development of a radio frequency (RF) platform for electromagnetically modulated signals that makes use of a software-defined radio (SDR) to receive information from a novel magnetoelectric (ME) antenna capable of sensing low-frequency magnetic fields with ultra-low magnitudes. The platform is employed as part of research and development to utilize miniaturized ME antennas and integrated circuits for neural recording with wireless implantable devices. To prototype the reception of electromagnetically modulated signals from a sensor, a versatile Universal Software Radio Peripheral (USRP) and the GNU Radio toolkit are utilized to enable real-time signal processing under varying operating conditions. Furthermore, it is demonstrated how a radio frequency signal transmitted from the SDR can be captured by the ME antenna for wireless energy harvesting.

APA, Harvard, Vancouver, ISO, and other styles

42

Park, Hyun Jae, Gyu-min Lee, Seung-Hun Shin, Byeong-hee Roh, and Ji Myeong Oh. "Implementation of Multi-Hop Cognitive Radio Testbed using Raspberry Pi and USRP." International Journal of Interdisciplinary Telecommunications and Networking 9, no. 4 (October 2017): 37–48. http://dx.doi.org/10.4018/ijitn.2017100105.

Full text

Abstract:

The increased usage of wireless communication has created a wireless frequency shortage problem. Cognitive Radio (CR) has attracted public attention, as one of the solutions that can resolve this issue. In this paper, the authors built an actual CR system testbed using the SDR (Software Defined Radio) platform, USRP (Universal Software Radio Peripheral) board, the SDR development toolkit, GNU Radio, and Raspberry Pi3, which is a single board computer. They configured Secondary User (SU)s with Raspberry Pi3 for straightforward and portable test environment. The authors' testbed performs spectrum sensing based on energy detection and determines whether the channel is occupied or not. Experimental results not only show performance but also provide their testbed that works well in multi-hop environments.

APA, Harvard, Vancouver, ISO, and other styles

43

Et.al, Mohammad Azmi Ridwan. "Fiber-Wireless Testbed using Software Defined Radio for Protocol and Algorithm Testing." Turkish Journal of Computer and Mathematics Education (TURCOMAT) 12, no. 3 (April 11, 2021): 1647–56. http://dx.doi.org/10.17762/turcomat.v12i3.985.

Full text

Abstract:

Fiber-Wireless (FiWi) network is able to provide abundant bandwidth capacity and mobility to the end-users. It also eliminates the needs of having complete tedious end-to-end fiber installation from the central office to the users which saves tremendous capital expenditure. However, FiWi is still progressing. Researchers worldwide are still developing experimental works for improvement on the network reliability, quality-of-services and security. Almost all recently proposed testbed designed for FiWi are using hardware that lacks in programmability feature, making it difficult to implement any protocols and algorithms. A testbed must be flexible, scalable and reprogrammable so that various experiments and testing can be implemented easily for testing purposes. In this paper, a reprogrammable FiWi testbed using software defined radio (SDR) is proposed. One of the most prominent SDR available in the market is Universal Software Radio Peripheral (USRP). It is chosen to be used in this paper as it is equipped with a user-friendly programming platform; LabVIEW. To test the testbed’s reprogrammability feature, two algorithms are implemented for proof-of-concept; collision avoidance and dynamic bandwidth allocation. The collision avoidance algorithm is implemented in the wireless side of the testbed using the concept of Carrier Sensing Multiple Access/Collision Avoidance. At the fiber domain, a dynamic bandwidth allocation-limited scheduling is incorporated in the testbed. The results show that algorithms implemented in the testbed are in-line with the expected results. It proves that the testbed can be used for future algorithm testing for research purposes.

APA, Harvard, Vancouver, ISO, and other styles

44

Satya Narayana, P., M. N.V.S. Syam Kumar, A. Keerthi Kishan, and K. V.R.K. Suraj. "Design approach for wideband FM receiver using RTL-SDR and raspberry PI." International Journal of Engineering & Technology 7, no. 2.31 (May 29, 2018): 9. http://dx.doi.org/10.14419/ijet.v7i2.31.13386.

Full text

Abstract:

Software defined radio replaced majority of hardware modules like mixers, filters, modulators and demodulators etc., with Software blocks in the field of radio electronics and communication. In this some or all the functionalities are Configurable using this software implemented on technologies like FPGAs, DSPs etc. Owing to lack of ease in implementing and reconfiguring huge hardware modules, we move on to implement an adaptable communication system with the help of SDR, as it can be easily configured to work with wide range of frequencies. We find various SDR transceiver modules which can be interfaced with digital computer and aided with firmware like GNU radio, SDR shark, etc., allowing us to construct blocks with the help of built in components that decode and process the received data and produce required output. In requirement of implementing a cost-effective, compact sized and portable system, we use a processing unit providing enough computational power to perform signal processing tasks which is Raspberry pi. Here we are going to implement a low cost SDR communication system that capture, process and visualize the Wide Band Frequency signal.

APA, Harvard, Vancouver, ISO, and other styles

45

Tsoeunyane, Lekhobola, Simon Winberg, and Michael Inggs. "Automatic Configurable Hardware Code Generation for Software-Defined Radios." Computers 7, no. 4 (October 19, 2018): 53. http://dx.doi.org/10.3390/computers7040053.

Full text

Abstract:

The development of software-defined radio (SDR) systems using field-programmable gate arrays (FPGAs) compels designers to reuse pre-existing Intellectual Property (IP) cores in order to meet time-to-market and design efficiency requirements. However, the low-level development difficulties associated with FPGAs hinder productivity, even when the designer is experienced with hardware design. These low-level difficulties include non-standard interfacing methods, component communication and synchronization challenges, complicated timing constraints and processing blocks that need to be customized through time-consuming design tweaks. In this paper, we present a methodology for automated and behavioral integration of dedicated IP cores for rapid prototyping of SDR applications. To maintain high performance of the SDR designs, our methodology integrates IP cores using characteristics of the dataflow model of computation (MoC), namely the static dataflow with access patterns (SDF-AP). We show how the dataflow is mapped onto the low-level model of hardware by efficiently applying low-level based optimizations and using a formal analysis technique that guarantees the correctness of the generated solutions. Furthermore, we demonstrate the capability of our automated hardware design approach by developing eight SDR applications in VHDL. The results show that well-optimized designs are generated and that this can improve productivity while also conserving the hardware resources used.

APA, Harvard, Vancouver, ISO, and other styles

46

Madasamy, Rajmohan, and Himanshu Shekhar. "Design of parallel and pipelined DA based OBC fir filter for software defined radio." Indonesian Journal of Electrical Engineering and Computer Science 14, no. 3 (June 1, 2019): 1228. http://dx.doi.org/10.11591/ijeecs.v14.i3.pp1228-1234.

Full text

Abstract:

Software Defined Radio (SDR) is a new technology used to implement different wireless communication standard for mobile communication. The Intermediate Frequency (IF) block is the most demanding block in software defined radio. The most important task in intermediate processing block is digital filtering which is carried out by Finite Impulse Response (FIR) filter. One of the major techniques for the calculation of inner product is Distributed Arithmetic (DA) based FIR filter which uses Look Up Table (LUT) to eliminate the need of multiplier. The efficiency of the DA filter is affected with the increasing number of address line and also due to its serial operation. To overcome this problem parallel and pipeline based DA filter using Offset Binary Coding (OBC) for Two Bit At A Time (2-BAAT) is proposed. Our proposed method achieves less area, low power consumption and nominal delay for SDR application.

APA, Harvard, Vancouver, ISO, and other styles

47

Utami, Alifia Fitri, Iswandi Iswandi, and I. Wayan Mustika. "Random Time Delay Mitigation in Pulse Radar Systems Implementation using Universal Software Radio Peripheral (USRP) and GNU Radio Companion (GRC)." IJITEE (International Journal of Information Technology and Electrical Engineering) 2, no. 3 (February 26, 2019): 85. http://dx.doi.org/10.22146/ijitee.42873.

Full text

Abstract:

Abstract— Radar or radio detection and ranging has a basic function to detect and measure a target range. One of the latest developments is Software Defined Radio (SDR)-based radar. An example of SDR implementation is by using Universal Software Radio Peripheral (USRP) as hardware and GNU Radio Companion (GRC) as software. The simplest radar type is pulse radar in which system timing is crucial. Meanwhile, in pulse radar system implementation using USRP and GRC, there is an issue with the random processing time delay between communication protocol of USRP and computer running the GRC, which causes incorrect measurement. This research aims to analyze the random time delay in the pulse radar system implementation by using USRP and GRC to anticipate the effect of random time delay. Pulse radar systems implementation is administered by transmitting 128 bits of Barker code and performing correlation between transmitted and received radar signal. Research result shows that the random time delay can be anticipated by making the direct reception from radar transmitter to receiver as the reference in range calculation.

APA, Harvard, Vancouver, ISO, and other styles

48

J, Abhishek S., Anirudh T. S, and Murigendrayya Hiremath. "Software Defined Radio SDR and Low Field Magnetic Resonance Imaging MRI -A Review." International Journal of Trend in Scientific Research and Development Volume-2, Issue-4 (June 30, 2018): 237–44. http://dx.doi.org/10.31142/ijtsrd12853.

Full text

APA, Harvard, Vancouver, ISO, and other styles

49

Hapsari, Jenny Putri, and Munaf Ismail. "Analisa Unjuk Kerja Software Defined Radio (SDR) dengan Teknik Quadrature Amplitude Modulation (QAM)." Infotekmesin 12, no. 2 (August 20, 2021): 139–43. http://dx.doi.org/10.35970/infotekmesin.v12i2.726.

Full text

APA, Harvard, Vancouver, ISO, and other styles

50

Cadena Muñoz, Ernesto, Luis Fernando Pedraza Martínez, and Cesar Augusto Hernandez. "Rényi Entropy-Based Spectrum Sensing in Mobile Cognitive Radio Networks Using Software Defined Radio." Entropy 22, no. 6 (June 6, 2020): 626. http://dx.doi.org/10.3390/e22060626.

Full text

Abstract:

A very important task in Mobile Cognitive Radio Networks (MCRN) is to ensure that the system releases a given frequency when a Primary User (PU) is present, by maintaining the principle to not interfere with its activity within a cognitive radio system. Afterwards, a cognitive protocol must be set in order to change to another frequency channel that is available or shut down the service if there are no free channels to be found. The system must sense the frequency spectrum constantly through the energy detection method which is the most commonly used. However, this analysis takes place in the time domain and signals cannot be easily identified due to changes in modulation, power and distance from mobile users. The proposed system works with Gaussian Minimum Shift Keying (GMSK) and Orthogonal Frequency Division Multiplexing (OFDM) for systems from Global System for Mobile Communication (GSM) to 5G systems, the signals are analyzed in the frequency domain and the Rényi-Entropy method is used as a tool to distinguish the noise and the PU signal without prior knowledge of its features. The main contribution of this research is that uses a Software Defined Radio (SDR) system to implement a MCRN in order to measure the behavior of Primary and Secondary signals in both time and frequency using GNURadio and OpenBTS as software tools to allow a phone call service between two Secondary Users (SU). This allows to extract experimental results that are compared with simulations and theory using Rényi-entropy to detect signals from SU in GMSK and OFDM systems. It is concluded that the Rényi-Entropy detector has a higher performance than the conventional energy detector in the Additive White Gaussian Noise (AWGN) and Rayleigh channels. The system increases the detection probability (PD) to over 96% with a Signal to Noise Ratio (SNR) of 10dB and starting 5 dB below energy sensing levels.

APA, Harvard, Vancouver, ISO, and other styles

Journal articles on the topic 'Software defined radio/Software radio (SDR/SR)'

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles