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Journal articles on the topic 'Wireless communication systems Broadband communication systems'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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1

Prasad, R. "Wireless Broadband Communication Systems." IEEE Communications Magazine 35, no. 1 (1997): 18. http://dx.doi.org/10.1109/mcom.1997.568189.

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Chae, Chan-Byoun, Antonio Forenza, Robert Heath, Matthew McKay, and Iain Collings. "Adaptive MIMO transmission techniques for broadband wireless communication systems [Topics in Wireless Communications." IEEE Communications Magazine 48, no. 5 (2010): 112–18. http://dx.doi.org/10.1109/mcom.2010.5458371.

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3

Seymour, Tom, and Ali Shaheen. "History of Wireless Communication." Review of Business Information Systems (RBIS) 15, no. 2 (2011): 37–42. http://dx.doi.org/10.19030/rbis.v15i2.4202.

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The history of communication is an exciting topic. This article reviews various areas that makeup the current history of wireless communication. These topics include: the wireless vision, generations of wireless, technical issues, current wireless systems, wireless LaNs, Wide Area Wireless Data Services, Broadband Wireless Access, Satellite Wireless Access, Satellite Networks, and Bluetooth and this material will stimulate you to do more research in these various areas of the wireless industry.

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He, Kai, Shu‐Xi Gong, and Da Guo. "Broadband omnidirectional distributed antenna for indoor wireless communication systems." Electronics Letters 52, no. 16 (2016): 1361–62. http://dx.doi.org/10.1049/el.2016.0832.

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Pakravan, Mohammad Reza, and Mohsen Kavehrad. "Design considerations for broadband indoor infrared wireless communication systems." International Journal of Wireless Information Networks 2, no. 4 (1995): 223–38. http://dx.doi.org/10.1007/bf01538147.

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Tsiligkaridis, Theodoros, and Douglas L. Jones. "PAPR Reduction Performance by Active Constellation Extension for Diversity MIMO-OFDM Systems." Journal of Electrical and Computer Engineering 2010 (2010): 1–5. http://dx.doi.org/10.1155/2010/930368.

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The V-BLAST wireless communication architecture, space-time block code (STBC), and space-frequency block code (SFBC) techniques are strong candidates for achieving very high data rates in 4G broadband wireless communications. This paper extends the efficient Active Constellation Extension Smart Gradient-Project (ACE-SGP) peak-to-average power (PAPR) reduction method to STBC, SFBC, and V-BLAST systems. Simulation results show 4.19 and 3.57 dB of PAPR reduction for the Alamouti STBC and SFBC, respectively.

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Kubrak, O. M., V. O. Cholpanov, and I. M. Dyukov. "ESTIMATION OF BIT ERROR PROBABILITIES OF COMMUNICATION SYSTEMS WITH FM BROADBAND SIGNALS." Проблеми створення, випробування, застосування та експлуатації складних інформаційних систем, no. 18 (December 30, 2020): 23–31. http://dx.doi.org/10.46972/2076-1546.2020.18.03.

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Today, wireless communication is one of the most promising areas in the field of communications. Modern radio communication systems and facilities operate in a complex electronic environment. The development of next-generation wireless networks depends on both transmitting and receiving equipment, which must provide the high data rates needed to maintain a reliable level of interference protection. The main factors influencing the quality of radio communication are natural and intentional interference in the radio wave propagation channel, multi-beam propagation, bandwidth limitation and the n

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UEHARA, Kazuhiro. "Trends in Broadband Wireless Communication Systems and Software Defined Radios." Interdisciplinary Information Sciences 12, no. 2 (2006): 163–72. http://dx.doi.org/10.4036/iis.2006.163.

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Gui, Guan, Wei Peng, and Fumiyuki Adachi. "High-resolution compressive channel estimation for broadband wireless communication systems." International Journal of Communication Systems 27, no. 10 (2012): 2396–407. http://dx.doi.org/10.1002/dac.2483.

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Getu, Tilahun M., Wessam Ajib, and Rene Landry. "Power-Based Broadband RF Interference Detector for Wireless Communication Systems." IEEE Wireless Communications Letters 7, no. 6 (2018): 1002–5. http://dx.doi.org/10.1109/lwc.2018.2845373.

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Manoufali, Mohamed, Hamada Alshaer, Peng-Yong Kong, and Shihab Jimaa. "An Overview of Maritime Wireless Mesh Communication Technologies and Protocols." International Journal of Business Data Communications and Networking 10, no. 1 (2014): 1–29. http://dx.doi.org/10.4018/ijbdcn.2014010101.

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Maritime wireless mesh networks (MWMNs) are conceived to provide network connectivity for maritime users and enable them to communicate with correspondent users connected to terrestrial communication networks. The high cost and low data-rate of satellite and other legacy maritime communication technologies and systems deployed in MWMNs pose major limitation to establish reliable and affordable maritime communications. In addition, the design of routing protocols in MWMNs remains a significant challenge due to the lack of reliable communication infrastructure and complexity of maritime environm

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Bhatt, Maharshi K., Bhavin S. Sedani, and Komal Borisagar. "Performance analysis of massive multiple input multiple output for high speed railway." International Journal of Electrical and Computer Engineering (IJECE) 11, no. 6 (2021): 5180. http://dx.doi.org/10.11591/ijece.v11i6.pp5180-5188.

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This paper analytically reviews the performance of massive multiple input multiple output (MIMO) system for communication in highly mobility scenarios like high speed Railways. As popularity of high speed train increasing day by day, high data rate wireless communication system for high speed train is extremely required. 5G wireless communication systems must be designed to meet the requirement of high speed broadband services at speed of around 500 km/h, which is the expected speed achievable by HSR systems, at a data rate of 180 Mbps or higher. Significant challenges of high mobility communi

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Qiu, Chencheng, Liu Liu, Botao Han, Jiachi Zhang, Zheng Li, and Tao Zhou. "Broadband Wireless Communication Systems for Vacuum Tube High-Speed Flying Train." Applied Sciences 10, no. 4 (2020): 1379. http://dx.doi.org/10.3390/app10041379.

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A vactrain (or vacuum tube high-speed flying train) is considered as a novel proposed rail transportation approach in the ultra-high-speed scenario. The maglev train can run with low mechanical friction, low air resistance, and low noise mode at a speed exceeding 1000 km/h inside the vacuum tube regardless of weather conditions. Currently, there is no research on train-to-ground wireless communication system for vactrain. In this paper, we first summarize a list of the unique challenges and opportunities associated with the wireless communication for vactrain, then analyze the bandwidth and Qu

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Liu, Zuo Xue, Jian Mei Dai, and Bo Liu. "The Design of Wireless Broadband Communication System Based on OFDMA." Applied Mechanics and Materials 241-244 (December 2012): 2275–78. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.2275.

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A Wireless Broadband Communication System has been made up based on OFDMA and AMC technologies. The system structure and working pattern is introduced, the OFDMA allocation model, the MIMO and AMC scheme are present, and the parameter such as transmitting power, receiver sensitivity, transmitting antenna gain and receiving antenna gain are designed. The system enables high quality wireless broadband communication. As a supplement with wired communication systems, the system could fulfill the requirement of recovery local communication rapidly when some accidents take place.

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Li, Changzhen, Junyi Yu, Jie Xue, Wei Chen, Shoufeng Wang, and Kun Yang. "Maritime Broadband Communication: Wireless Channel Measurement and Characteristic Analysis for Offshore Waters." Journal of Marine Science and Engineering 9, no. 7 (2021): 783. http://dx.doi.org/10.3390/jmse9070783.

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For a long time, the development of maritime communication has been restricted by the low data rate, high-latency and high cost of the current communication systems. The upgrade of new generation mobile communication technologies is attracting more and more attention to conduct a shore-based broadband mobile communication network with high-latency and high reliability to serve the maritime industries. This paper presents a solution by means of building a ship-to-infrastructure (S2I) and a ship-to-ship (S2S) wireless communication networks for an offshore region. We characterize the S2I and S2S

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Liang, Thow Yick. "Strategic exploitation of information and communication technology in the healthcare sector." Human Systems Management 21, no. 4 (2002): 241–48. http://dx.doi.org/10.3233/hsm-2002-21403.

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Among the various industrial sectors in Singapore, healthcare was the first to exploit broadband technology. In 1997, the Singapore General Hospital installed a broadband backbone even before the technology was generally viable. Today, the system supports the transmission of high-quality X-rays, CT- and MRI-scanned images, and electrocardiogram. And the latest decision is to supplement the existing facilities with wireless technology. This paper examines the strategic use of infocomm technology in the healthcare sector focusing on some recent technologies such as electronic data interchange, t

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Lee, Hyunwoo, and Byungje Lee. "Compact Broadband Dual-Polarized Antenna for Indoor MIMO Wireless Communication Systems." IEEE Transactions on Antennas and Propagation 64, no. 2 (2016): 766–70. http://dx.doi.org/10.1109/tap.2015.2506201.

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Zhang, Rui, Jingwen Liu, Yangyang Wang, Zhongbao Luo, Binzhen Zhang, and Junping Duan. "Flexible Wearable Composite Antennas for Global Wireless Communication Systems." Sensors 21, no. 18 (2021): 6083. http://dx.doi.org/10.3390/s21186083.

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Although wearable antennas have made great progress in recent years, how to design high-performance antennas suitable for most wireless communication systems has always been the direction of RF workers. In this paper, a new approach for the design and manufacture of a compact, low-profile, broadband, omni-directional and conformal antenna is presented, including the use of a customized flexible dielectric substrate with high permittivity and low loss tangent to realize the compact sensing antenna. Poly-di-methyl-siloxane (PDMS) is doped a certain proportion of aluminum trioxide (Al2O3) and Pol

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Hoeft, Michał, Krzysztof Gierłowski, Jacek Rak, and Józef Woźniak. "netBaltic System – Heterogeneous Wireless Network for Maritime Communications." Polish Maritime Research 25, no. 2 (2018): 14–26. http://dx.doi.org/10.2478/pomr-2018-0050.

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Abstract In case of maritime communications, we observe a growing interest in deployment of multitask satellite-based solutions and development of new maritime-specific systems intended for improvements in safety of e-navigation. Analysis of different types of currently used maritime communication systems leads, however, to a conclusion that neither global and still very expensive satellite systems nor cheaper, but short-ranged transmission technologies can, on their own, fully meet the today’s expectations and quality requirements formulated for broadband maritime systems. This lack of reliab

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Urošević, Uglješa, and Zoran Veljović. "A concept of future sixth generation wireless networks: 6G." Tehnika 76, no. 3 (2021): 335–41. http://dx.doi.org/10.5937/tehnika2103335u.

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Simultaneously with the beginning of the implementation of the fifth generation wireless networks (5G systems), the research of the next generation mobile wireless systems - the sixth generation network 6G, has began. Having in mind the already started considerations on the components of the future 6G technology, it is necessary to follow the given technological trends, which are waiting for us beyond 5G era. This paper will explain the range of communication needs and technologies within the future 6G. 6G is expected to include three main aspects, mobile ultra broadband, super Internet-of-Thi

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Abdullah Saeed, Rebin. "Performance Comparison of Handover mechanisms in mobile wireless communication networks for Broadband Wireless Access Systems." International Journal of Computer Communication and Informatics 2, no. 1 (2020): 25–37. http://dx.doi.org/10.34256/ijcci2014.

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Mobility is the mobile communication characteristics which make it diverse and attractive for all. Wireless communication is now attractive to the whole world and provides the ability of users to communicate very active. Transferring the users from one radio network to another is accomplishing the IT. The process is called the handover process. The transfer takes place by adjusting the duration of the soft transfers, the area size and either by cell crossing or by deterioration in the signal quality of the current channel — the brief overview of handover, Handover in WiMAX and LTE, types of ha

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Khezzar, Djamel, Djamel Khedrouche, and Tayeb A. Denidni. "60 GHz Broadband LTCC Antenna for 5G Mobile Communication Systems." Instrumentation Mesure Métrologie 20, no. 1 (2021): 1–5. http://dx.doi.org/10.18280/i2m.200101.

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This paper provides a numerical investigation in designing wideband circularly polarized 60 GHz antenna using Low-Temperature Co-fired Ceramic technology (LTCC). The LTCC provides high-density multilayer integration, low dielectric loss, and low costs. The use of LTCC technology is advantageous for easy and flexible 3D integration and freer vias distribution in the substrate. The designed antenna focuses on obtaining a better trade-off in terms of size, gain, circular polarization (CP), and large bandwidth. The circular polarization was chosen in order to minimize the transmission errors cause

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Martins, Marcos, Carlos Faria, Tiago Matos, et al. "Wideband and Wide Beam Polyvinylidene Difluoride (PVDF) Acoustic Transducer for Broadband Underwater Communications." Sensors 19, no. 18 (2019): 3991. http://dx.doi.org/10.3390/s19183991.

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The advances in wireless communications are still very limited when intended to be used on Underwater Communication Systems mainly due to the adverse proprieties of the submarine channel to the acoustic and radio frequency (RF) waves propagation. This work describes the development and characterization of a polyvinylidene difluoride ultrasound transducer to be used as an emitter in underwater wireless communications. The transducer has a beam up to 10° × 70° degrees and a usable frequency band up to 1 MHz. The transducer was designed using Finite Elements Methods and compared with real measure

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Ancans, G., A. Stafecka, V. Bobrovs, A. Ancans, and J. Caiko. "Analysis of Characteristics and Requirements for 5G Mobile Communication Systems." Latvian Journal of Physics and Technical Sciences 54, no. 4 (2017): 69–78. http://dx.doi.org/10.1515/lpts-2017-0028.

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Abstract One of the main objectives of the fifth generation (5G) mobile communication systems, also known as IMT-2020, is to increase the current data rates up to several gigabits per second (Gbit/s) or even up to 10 Gbit/s and higher. One of the possibilities to consider is the use of higher frequencies in order to enlarge the available bandwidth. Wider bandwidth is necessary to achieve much higher data rates. It should be noted that wireless broadband transmission technologies require frequencies for their development. The main goal of the research is to investigate the characteristics and r

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Przesmycki, Rafal, Marek Bugaj, and Leszek Nowosielski. "Broadband Microstrip Antenna for 5G Wireless Systems Operating at 28 GHz." Electronics 10, no. 1 (2020): 1. http://dx.doi.org/10.3390/electronics10010001.

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Communication systems have been driven towards the fifth generation (5G) due to the demands of compact, high speed, and large bandwidth systems. These types of radio communication systems require new and more efficient antenna designs. This article presents a new design solution of a broadband microstrip antenna intended for use in 5G systems. The proposed antenna has a central operating frequency of 28 GHz and can be used in the LMDS (local multipoint distribution service) frequency band. The dimensions of the antenna and its parameters have been calculated, simulated, and optimized using the

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DANG, LE KHOA, HUU PHUONG NGUYEN, LE NGUYEN BINH, and DUC NHAN NGUYEN. "SIMULINK MODEL AND FPGA-BASED OFDM COMMUNICATION SYSTEM: A SIMULATION AND HARDWARE INTEGRATED PLATFORM." International Journal of Modeling, Simulation, and Scientific Computing 01, no. 03 (2010): 369–404. http://dx.doi.org/10.1142/s1793962310000250.

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Ultra-broadband networks are currently attracting significant interests in employing wireless access and optical fiber access to the home and to the building at symbol rate reaching Gb/s. OFDM is a multicarrier modulation technique and considered to offer significant reduction of the data symbol to be carried per carrier channel, especially in ultra-high speed optical communications with bit rate reaching 100 Gb/s or even higher. This paper thus presents a novel and generic OFDM system employing both MATLAB Simulink and FPGA-based development software platform for simulation as well as hardwar

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Jianhua Liu and Jian Li. "Packet Design and Signal Processing for OFDM-Based Mobile Broadband Wireless Communication Systems." IEEE Transactions on Mobile Computing 5, no. 9 (2006): 1133–42. http://dx.doi.org/10.1109/tmc.2006.136.

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Sahrab, Ammar A., and Alaa Doohee Yaseen. "Filtered orthogonal frequency division multiplexing for improved 5G systems." Bulletin of Electrical Engineering and Informatics 10, no. 4 (2021): 2079–87. http://dx.doi.org/10.11591/eei.v10i4.3119.

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Wireless communications became an integrated part of the human life. Fifth generation (5G) is the modern communication which provides enhanced mobile broadband (eMBB), ultra reliable low latency communications (URLLC), and massive machine type communication (mMTC). Thus, 5G have to provide coverage to multi-numerology devices, therefore, modulation and access schemes are suggested in the literature such as cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) and filtered OFDM (f-OFDM). CP-OFDM suffers from the high out of band emission which limited the multi-numerology applicati

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Curran, Stephen John. "Broadband Communications for Aircraft in Oceanic and Other Remote Areas." International Journal of Aviation Systems, Operations and Training 1, no. 1 (2014): 51–59. http://dx.doi.org/10.4018/ijasot.2014010106.

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Data communication with aircraft presents unique technical challenges and these challenges are more pronounced when the aircraft are travelling over oceanic or other remote areas. When in populated areas, systems are available that can support high speed data services, one Gigabit per second (Gbps) and beyond via, terrestrial ground stations. However no such systems exist to provide airborne communications with high bandwidths among aircraft and between aircraft and the ground in more remote regions. Passengers will expect data service on the aircraft similar to what they typically experience

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Kaklamani, Dimitra I., Athanasios D. Panagopoulos, and Panagiotis K. Gkonis. "Antennas and Propagation Aspects for Emerging Wireless Communication Technologies." Electronics 10, no. 8 (2021): 964. http://dx.doi.org/10.3390/electronics10080964.

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The increasing demand for high data rate applications and the delivery of zero-latency multimedia content drives technological evolutions towards the design and implementation of next-generation broadband wireless networks [...]

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Lin, Gang Yong, Sheng Hui Dai, and Shan Long Ma. "An Improved Resource Management Method in Mobile Wireless Communications." Applied Mechanics and Materials 20-23 (January 2010): 872–77. http://dx.doi.org/10.4028/www.scientific.net/amm.20-23.872.

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The increasing use of wireless communications in mobile devices starts a new level of resource management. Users with mobile devices accessing wireless hot spots are a commonplace, and, thus, their management is becoming more important. Therefore, efficient utilization of radio resource becomes a key point in the design of broadband systems. From the view of the development of radio resource management, current technologies have quite good performance and high efficiency when the category of service is single. However, when multiple services take place simultaneously, the system has to emphasi

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Saiko, Volodymyr, Volodymyr Nakonechnyi, Serhii Dakov, and Serhii Tolyupa. "TERACHERTSOVYI CHANNEL RADIODOSTUPU FOR COMPLEX SYSTEM WITHOUT SYSTEMS THE BELL OF THE OBJECTS." Cybersecurity: Education, Science, Technique, no. 1 (2018): 17–25. http://dx.doi.org/10.28925/2663-4023.2018.1.1725.

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One of the perspective use of THz (submillimeter) technologies is the wireless communication systems. In particular, it will lead to development of the submillimeter/THz band devices with brand new size, interference immunity and energy efficiency, for high speed video signal broadcasting, line of sight relay, for 5G cell phone transport networks, high precision radars for small size, high velocity target detection and tracking, and hidden object detection radiometric systems. Nowadays, the research of such wireless systems is focused on increase of communication channel bandwidth using superb

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Gui, Guan, Qun Wan, Ni Na Wang, and Cong Yu Huang. "Fast Sparse Multipath Channel Estimation with Smooth L0 Algorithm for Broadband Wireless Communication Systems." Communications and Network 03, no. 01 (2011): 1–7. http://dx.doi.org/10.4236/cn.2011.31001.

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Zhang, Yulan, and Heather Song. "Broadband Miniaturized Bandpass Filter with Circular Stubs for Compact Wireless and Mobile Communication Systems." Journal of Electromagnetic Analysis and Applications 05, no. 03 (2013): 109–13. http://dx.doi.org/10.4236/jemaa.2013.53018.

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Tian, Lin, Juan Li, Yi Huang, Jinglin Shi, and Jihua Zhou. "Seamless Dual-Link Handover Scheme in Broadband Wireless Communication Systems for High-Speed Rail." IEEE Journal on Selected Areas in Communications 30, no. 4 (2012): 708–18. http://dx.doi.org/10.1109/jsac.2012.120505.

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Vora, Ankur, and Kyoung-Don Kang. "Effective 5G Wireless Downlink Scheduling and Resource Allocation in Cyber-Physical Systems." Technologies 6, no. 4 (2018): 105. http://dx.doi.org/10.3390/technologies6040105.

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In emerging Cyber-Physical Systems (CPS), the demand for higher communication performance and enhanced wireless connectivity is increasing fast. To address the issue, in our recent work, we proposed a dynamic programming algorithm with polynomial time complexity for effective cross-layer downlink Scheduling and Resource Allocation (SRA) considering the channel and queue state, while supporting fairness. In this paper, we extend the SRA algorithm to consider 5G use-cases, namely enhanced Machine Type Communication (eMTC), Ultra-Reliable Low Latency Communication (URLLC) and enhanced Mobile Broa

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Cha, Junghoon, Choon-Seong Leem, Ikhwan Kim, Hakyoung Lee, and Hojun Lee. "Broadband Dual-Polarized 2 × 2 MIMO Antenna for a 5G Wireless Communication System." Electronics 10, no. 17 (2021): 2141. http://dx.doi.org/10.3390/electronics10172141.

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In this study, we proposed an indoor broadband dual-polarized 2 × 2 MIMO (multiple-input and multiple-output) antenna having dimensions of 240 mm × 200 mm × 40 mm, for application in 5G wireless communication systems. The proposed antenna comprised two vertically polarized circular monopole antennas (CMAs), two horizontally polarized modified rectangular dipole antennas (MRDAs), and a ground plane. The distance between the two MRDAs (MRDA1 and MRDA2) was 70.5 mm and 109.5 mm in the horizontal (x-direction) and 109.5 mm vertical (y-direction) directions, respectively. Conversely, the distance b

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Nusenu, Shaddrack Yaw. "Development of Frequency Modulated Array Antennas for Millimeter-Wave Communications." Wireless Communications and Mobile Computing 2019 (April 16, 2019): 1–15. http://dx.doi.org/10.1155/2019/6940708.

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With the massive growth of wireless data in mobile broadband communications, millimeter-wave (mm-wave) communication is an alternative enabling technique for fifth generation (5G) wireless communication systems. More importantly, mm-wave offers large frequency spectrum bands ranging from 30GHz to 300GHz that can be utilized to provide very high capacity (i.e., multigigabits per-second data rates). Moreover, because of the small wavelength at mm-wave frequencies, we can exploit large antenna elements in a small physical area, meaning beamforming schemes are feasible. Nevertheless, high directio

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Lallas, Efthymios. "Key Roles of Plasmonics in Wireless THz Nanocommunications—A Survey." Applied Sciences 9, no. 24 (2019): 5488. http://dx.doi.org/10.3390/app9245488.

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Wireless data traffic has experienced an unprecedented boost in past years, and according to data traffic forecasts, within a decade, it is expected to compete sufficiently with wired broadband infrastructure. Therefore, the use of even higher carrier frequency bands in the THz range, via adoption of new technologies to equip future THz band wireless communication systems at the nanoscale is required, in order to accommodate a variety of applications, that would satisfy the ever increasing user demands of higher data rates. Certain wireless applications such as 5G and beyond communications, ne

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Dai, Xi Wang, Sheng Wen Mao, and Tao Zhou. "Broadband circular patch antenna with monopolar radiation pattern for indoor wireless communication." International Journal of Microwave and Wireless Technologies 9, no. 4 (2016): 953–58. http://dx.doi.org/10.1017/s1759078716000908.

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A circular patch antenna with wide impedance bandwidth and monopolar radiation pattern for indoor wireless communication is proposed and analyzed in this paper. The antenna is a combination of circular patch and four capacitive feeds. By incorporating a cross-connected shorted conducting strip over the circular patch, the proposed antenna provides an enhanced impedance width of 65.4%, ranging from 1.46 to 2.88 GHz. Four capacitive feeds improve the design flexibility and make the ripple of horizontal radiation pattern less than 3 dB. A prototype of the proposed structure has been fabricated an

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MINOMO, MASAHIRO, and TATSURO MASAMURA. "PROSPECTS FOR MOBILE COMMUNICATION SYSTEMS AND KEY TECHNOLOGIES CAPABLE OF SUPPORTING EXPANDING MOBILE MULTIMEDIA SERVICES." Journal of Circuits, Systems and Computers 13, no. 02 (2004): 237–51. http://dx.doi.org/10.1142/s0218126604001404.

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The first commercial service of the 3rd generation (3G) mobile communication system, IMT-2000 (International Mobile Telecommunications), was launched in October 2001 in Japan. This is the first 3G service employing Wideband Code Division Multiple Access (W-CDMA) as its air interface between mobile terminals and base stations. This new system, 3G, is expected to accelerate the deployment of future mobile multimedia services, which substantially got started with the "i-mode" service in February 1999 in Japan. Research activities into future mobile communication systems capable of supporting a va

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Firdausi, Ahmad, Galang Hakim, and Mudrik Alaydrus. "Designing a tri-band microstrip antenna for targetting 5g broadband communications." MATEC Web of Conferences 218 (2018): 03015. http://dx.doi.org/10.1051/matecconf/201821803015.

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One of the technologies that has wireless application nowadays was 5G mobile communication.This paper presents the designing of a Tri-band microstrip antenna for targeting 5G broadband communications, This element antenna has 3x3 rectangular patches with feeding line structures are branched. With the use of double feeding proximity coupling structure, we intend to maximize antenna bandwidth, therefore the antenna cover range tri-band frequency from 40 GHz to 70 GHz. The reflection factor comparation between simulation and measurement has a minimum with respective frequency at 45.3 GHz, 57 GHz,

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Samsuzzaman, Md, and Mohammad Islam. "Circularly Polarized Broadband Printed Antenna for Wireless Applications." Sensors 18, no. 12 (2018): 4261. http://dx.doi.org/10.3390/s18124261.

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A simple, compact sickle-shaped printed antenna with a slotted ground plane is designed and developed for broadband circularly polarized (CP) radiation. The sickle-shaped radiator with a tapered feed line and circular slotted square ground plane are utilized to realize the wideband CP radiation feature. With optimized dimensions of 0.29λ × 0.29λ × 0.012λ at 2.22 GHz frequency for the realized antenna parameters, the measured results display that the antenna has a 10 dB impedance bandwidth of 7.70 GHz (126.85%; 2.22–9.92 GHz) and a 3 dB axial ratio (AR) bandwidth of 2.64 GHz (73.33%; 2.28–4.92

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Mohan, Anand, and M. Sundararajan. "FRACTAL ANTENNA – WIRELESS COMMUNICATION NEW BEGINNING BREAKTHROUGH IN DIGITAL ERA." Acta Informatica Malaysia 4, no. 1 (2020): 01–06. http://dx.doi.org/10.26480/aim.01.2020.01.06.

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In this digital era, we are subject to cellular gadgets, there has been an expanding demand in antennas that are smaller, conformal, and broadband. Fractal antenna wire utilizes a self-comparative structure to expand the length of a material in an all-out surface zone. Fractal Antenna Systems creates and constructs the smaller, most astounding execution Wideband/multiband antennas on the planet. These antennas are regularly two to multiple times smaller than conventional aerials, while accomplishing remarkable recurrence inclusion and magnificent gains and power designs. Fractal Antenna’s item

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Yoon, Yonghyun, Byeonghui Moon, Hyunwoo Lee, and Byungje Lee. "LOW PROFILE BROADBAND ANTENNA ARRAY FOR HIGH-RATE CLOSE PROXIMITY WIRELESS COMMUNICATION SYSTEMS AT 60 GHZ." Progress In Electromagnetics Research C 77 (2017): 1–9. http://dx.doi.org/10.2528/pierc17063001.

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Oyerinde, Olutayo Oyeyemi, Adam Flizikowski, and Tomasz Marciniak. "Iterative Hard Thresholding with Combined Variable Step Size & Momentum-Based Estimator for Wireless Communication Systems with Dynamic Sparse Channels." Electronics 10, no. 7 (2021): 842. http://dx.doi.org/10.3390/electronics10070842.

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The channel of the broadband wireless communications system can be modeled as a dynamic sparse channel. Such a channel is difficult to reconstruct by using linear channel estimators that are normally employed for dense channels’ estimation because of their lack of capacity to use the inherent channel’s sparsity. This paper focuses on reconstructing this type of time-varying sparse channel by extending a recently proposed dynamic channel estimator. Specifically, variable step size’s mechanism and variable momentum parameter are incorporated into traditional Iterative Hard Thresholding-based cha

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Ding, Jianwen, Lei Zhang, Jingya Yang, Bin Sun, and Jiying Huang. "Broadband Wireless Channel in Composite High-Speed Railway Scenario: Measurements, Simulation, and Analysis." Wireless Communications and Mobile Computing 2017 (2017): 1–15. http://dx.doi.org/10.1155/2017/2897636.

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The rapid development of high-speed railway (HSR) and train-ground communications with high reliability, safety, and capacity promotes the evolution of railway dedicated mobile communication systems from Global System for Mobile Communications-Railway (GSM-R) to Long Term Evolution-Railway (LTE-R). The main challenges for LTE-R network planning are the rapidly time-varying channel and high mobility, because HSR lines consist of a variety of complex terrains, especially the composite scenarios where tunnels, cuttings, and viaducts are connected together within a short distance. Existing researc

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Wang, Xinheng. "Wireless mesh networks." Journal of Telemedicine and Telecare 14, no. 8 (2008): 401–3. http://dx.doi.org/10.1258/jtt.2008.008003.

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Wireless telemedicine using GSM and GPRS technologies can only provide low bandwidth connections, which makes it difficult to transmit images and video. Satellite or 3G wireless transmission provides greater bandwidth, but the running costs are high. Wireless networks (WLANs) appear promising, since they can supply high bandwidth at low cost. However, the WLAN technology has limitations, such as coverage. A new wireless networking technology named the wireless mesh network (WMN) overcomes some of the limitations of the WLAN. A WMN combines the characteristics of both a WLAN and ad hoc networks

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Hsu, Chung-Hsien, and Kai-Ten Feng. "Adaptive point-to-point communication approach for subscriber stations in broadband wireless networks." Wireless Networks 17, no. 1 (2010): 69–86. http://dx.doi.org/10.1007/s11276-010-0265-z.

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Bennis, Mehdi. "Federated Learning and Control at the Wireless Network Edge." GetMobile: Mobile Computing and Communications 24, no. 3 (2021): 9–13. http://dx.doi.org/10.1145/3447853.3447857.

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We are at the cusp of two transformational technologies, namely the fifth generation of wireless communication systems, known as 5G, and machine learning (ML). On the one hand, while the evolutionary part of 5G, enhanced mobile broadband (eMBB), focusing mainly on millimeter-wave transmissions has made significant progress, fundamentals of ultra-reliable and low-latency communication (URLLC), one of the major tenets of the 5G revolution, are yet to be fully understood. In essence, URLLC warrants a departure from average-based system design toward a clean slate design centered on tail, risk, an

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