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Journal articles on the topic 'Phase Shift Keying (PSK)'

Author: Grafiati

Published: 4 June 2025

Last updated: 15 July 2025

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1

Apinut, Kaewmunee, and Khumsat Phanumas. "Single-phase binary phase-shift keying, quadrature phase shift keying demodulators using an XOR gate as a phase detector." Single-phase binary phase-shift keying, quadrature phase shift keying demodulators using an XOR gate as a phase detector 13, no. 6 (2023): 6092–101. https://doi.org/10.11591/ijece.v13i6.pp6092-6101.

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A single-phase/single-loop multiple-phase-shift-keying (m-PSK) demodulator is described. The demodulator relies on a linear range of an exclusive-OR (XOR) gate employed as a phase detector. The phase controller takes the average output from the XOR gate and performs a sub-ranging/re-scaling operation to provide an input signal to a voltage-controlled oscillator (VCO). The demodulator is truly modular which theoretically can be extended for an m-PSK signal. The proposed single-phase binary-/quadrature-PSK (BPSK/QPSK) demodulators have been implemented with low-cost discrete components. The core

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Kaewmunee, Apinut, and Phanumas Khumsat. "Single-phase binary phase-shift keying, quadrature phase shift keying demodulators using an XOR gate as a phase detector." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 6 (2023): 6092. http://dx.doi.org/10.11591/ijece.v13i6.pp6092-6101.

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A single-phase/single-loop multiple-phase-shift-keying (<em><span lang="EN-US">m</span></em><span lang="EN-US">-PSK)</span><span lang="EN-US"> demodulator is described. The demodulator relies on a linear range of an exclusive-OR (XOR) gate employed as a phase detector. The phase controller takes the average output from the XOR gate and performs a sub-ranging/re-scaling operation to provide an input signal to a voltage-controlled oscillator (VCO). The demodulator is truly modular which theoretically can be extended for an </span><em><span

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3

FEI, Zhiting, Min ZHAO, Jindong ZHANG, Chen LI, and Xiaohua ZHU. "Waveform optimization technology of missile borne radar based on FSK-PSK composite modulation for anti repeater jamming." Xibei Gongye Daxue Xuebao/Journal of Northwestern Polytechnical University 40, no. 1 (2022): 125–33. http://dx.doi.org/10.1051/jnwpu/20224010125.

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Aiming at the waveform of missile borne radar is simple and easy to be affected by the repeater jamming in the terminal guidance, an anti-jamming waveform optimization algorithm based on the frequency shift keying(FSK) and phase shift keying(PSK) composite modulation is proposed. The model function of FSK-PSK composite modulation signal is analyzed. Based on the orthogonality of sub pulses, an optimization algorithm of intra pulse PSK modulation based on the alternating direction multiplier method(ADMM) is designed. The simulation results show that comparing with PSK signal, the intra pulse su

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Singh, Kamaljeet, and Nirmal A V. "OVERVIEW OF MODULATION SCHEMES SELECTION IN SATELLITE BASED COMMUNICATION." ICTACT Journal on Communication Technology 11, no. 3 (2020): 2203–7. https://doi.org/10.21917/ijct.2020.0326.

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Satellite based communication either in GEO or LEO based system are prominently employed for voice, video, data communication. Demand of more traffic necessitates the data rate of satellite to be enhanced which can be implemented by the proper choice of modulation scheme. Presently ground systems are also wireless based which include direct broadcast satellite (DBS),television service, wireless local area networks (WLANs), global positioning satellite (GPS), radio-frequency identification systems which is either point-to-point or point-to-multipoint. Modern day communication systems are digita

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Fei, Zhiting, Jiachen Zhao, Zhe Geng, Xiaohua Zhu, and Jindong Zhang. "Hybrid FSK-PSK Waveform Optimization for Radar Based on Alternating Direction Method of Multiplier (ADMM)." Sensors 21, no. 23 (2021): 7915. http://dx.doi.org/10.3390/s21237915.

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In this paper, a new radar signal modulated with a hybrid of the frequency shift keying (FSK) and the phase shift keying (PSK) signal—i.e., the FSK-PSK signal—is studied. Different phase encoding sequences are used to modulate the sub-pulses to obtain lower sidelobe levels and ensure signal orthogonality. In addition, to counter intra-pulse slice repeater jamming of specific length generated by the enemy jammer, an orthogonal waveform made of sub-pulses of equal length based on the FSK-PSK modulation scheme is designed. The simulation results show that the optimized discrete phase encoding seq

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Abdulkarem, Ahmed Mohammed, Firas Abedi, Hayder M. A. Ghanimi, et al. "Robust Automatic Modulation Classification Using Convolutional Deep Neural Network Based on Scalogram Information." Computers 11, no. 11 (2022): 162. http://dx.doi.org/10.3390/computers11110162.

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This study proposed a two-stage method, which combines a convolutional neural network (CNN) with the continuous wavelet transform (CWT) for multiclass modulation classification. The modulation signals’ time-frequency information was first extracted using CWT as a data source. The convolutional neural network was fed input from 2D pictures. The second step included feeding the proposed algorithm the 2D time-frequency information it had obtained in order to classify the different kinds of modulations. Six different types of modulations, including amplitude-shift keying (ASK), phase-shift keying

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Литвиненко, В. А., О. М. С’янов, М. О. Гнатюк, С. В. Марченко та Б. Р. Плетяний. "ДОСЛІДЖЕННЯ ПРОГРАМНОЇ ФІЛЬТРАЦІЇ ЦИФРОВОГО СИГНАЛУ НА БАЗІ СТАНДАРТУ PSK-31". Математичне моделювання, № 1(48) (6 червня 2023): 40–47. http://dx.doi.org/10.31319/2519-8106.1(48)2023.280069.

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Системи цифрового зв'язку стають усе більше привабливими внаслідок постійно зростаючого попиту і через те, що цифрова передача пропонує можливості обробки інформації, не доступні при використанні аналогової передачі. В основі сучасних систем передачі цифрової інформації через радіоканали лежить кодування кожного символу за допомогою сегмента опорного коливання з певними значеннями базових параметрів — амплітуди, частоти, початкової фази. Відповідно до змінюваного параметра розрізняються основні сімейства — амплітудна маніпуляція (AM, ASK — Amplitude Shift Keying), частотна маніпуляція (Ч

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Lv, Shurong, Siqi Liu, Huili Shi, and Jindong Zhang. "Design of low-correlation sidelobe FSK-PSK waveforms with controllable frequency points." Journal of Physics: Conference Series 2761, no. 1 (2024): 012019. http://dx.doi.org/10.1088/1742-6596/2761/1/012019.

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Abstract Frequency shift keying-phase shift keying (FSK-PSK) waveforms are recognized for their superior resolution and signal detectability. However, the optimization of FSK-PSK parameters, particularly frequency hopping control, remains challenging and can lead to increased sidelobe levels. This paper develops an optimization model to substantially enhance the controllability of hopping frequency in FSK-PSK waveforms for radar systems. By harnessing the Karush-Kuhn-Tucker (KKT) conditions, the model strategically minimizes the autocorrelation integrated sidelobe level (ISL), thereby sharpeni

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Mayzar, Deby Krisla, Diah Dwiyanti, and Fitri Elvira Ananda. "Rancang Bangun Simulasi Quadrature Phase Shift Keying (QPSK) Berbasis Graphical User Interface (GUI)." Spektral 1, no. 1 (2020): 24–29. http://dx.doi.org/10.32722/spektral.v1i1.3433.

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Modulasi QPSK (Quadrature Phase Shift Keying) adalah teknik modulasi digital yang merupakan pengembangan dari modulasi PSK (Phase Shift Keying) dengan memanfaatkan perubahan fasa dari sinyal pembawa.Modulasi PSK dapat mengkodekan dua bit per simbol yang ditujukan untuk meminimalkan bit eror rate (BER). Pada penelitian ini bertujuan untuk membuat aplikasi sederhana menggunakan matlab berbasis GUI untuk memodulasi sinyal biner QPSK. Metode yang dilakukan dalam pembuatan aplikasi dimulai dari tahap perancangan system, tahap coding, desain interface dan tahap pengujian. Aplikasi sederhana yang dir

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Qasaymeh, Mahmoud M. "Intelligent Receiver for Frequency Hopping Signals Using Deep Learning." International Journal of Electrical and Electronic Engineering & Telecommunications 13, no. 5 (2024): 366–73. http://dx.doi.org/10.18178/ijeetc.13.5.366-373.

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This paper presents a promising Deep-Learning (DL) approach for accurate symbol detection in a slow Frequency Hopping (SFH) wireless communication System under a Narrow Band (NB) multipath channel fading. A feedforward neural network with three layers of input, hidden, and output was employed for deep learning. The neural network is designed to take 80 features as input, representing the received signal samples at the receiver. The neural network is trained to anticipate the transmitted symbol based on the provided training dataset, utilizing different modulation techniques, including Binary P

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11

Brychkov, Yu A., and N. V. Savischenko. "Capacity of a communication channel with quadrature phase-shift keying and phase quantization." Uchenye Zapiski Kazanskogo Universiteta. Seriya Fiziko-Matematicheskie Nauki 166, no. 3 (2024): 306–19. http://dx.doi.org/10.26907/2541-7746.2024.3.306-319.

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The influence of the number of phase quantization levels L on the capacity CM,L of a communication channel with additive white Gaussian noise (AWGN) was studied in a communication system using QPSK (4-PSK).

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12

Warburton, K., and R. A. Carrasco. "Design and Implementation of a Simple PSK/DPSK Modem." International Journal of Electrical Engineering & Education 24, no. 3 (1987): 215–25. http://dx.doi.org/10.1177/002072098702400305.

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The paper outlines the principles of phase shift keying and discusses, in detail, the implementation of a practical modem. The paper concludes by theoretically and practically evaluating the system performance.

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Ahmed, Md Firoz, Md Faysal Ahmed, and Abu Zafor Md. Touhidul Islam. "Comparison of Bit Error Rate Performance of Various Digital Modulation Schemes over AWGN and Rayleigh Fading Channels using Simulink." International Journal of Ambient Systems and Applications 9, no. 2 (2021): 7–16. http://dx.doi.org/10.5121/ijasa.2021.9202.

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Digital modulation increases information capacity, data security, and system availability while maintaining high communication quality. As a result, digital modulation techniques are in higher demand than analog modulation techniques due to their ability to transmit larger amounts of data. Amplitude Shift Keying (ASK), Frequency Shift Keying (FSK), Phase Shift Keying (PSK), Differential Phase Shift Keying (DPSK), and Quadrature Amplitude Modulation (QAM) are critical components of current communications systems development, particularly for broadband wireless communications. In this paper, the

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14

Kumngern, Montree, Thanat Nonthaputha, and Fabian Khateb. "Arbitrary Waveform Generators Using Current-Controlled Current Conveyor Transconductance Amplifier and Current Conveyor Analog Switches." Journal of Circuits, Systems and Computers 28, no. 11 (2019): 1950179. http://dx.doi.org/10.1142/s0218126619501792.

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This paper presents a new amplitude modulation (AM), frequency modulation (FM), amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK) and quadrature amplitude modulation (QAM) waveform generators using current current-controlled conveyor transconductance amplifier (CCCTA) and current conveyor analog switches (CCASs). The CCCTA around with capacitors and resistors are used to generate high-frequency carrier which is worked as a quadrature oscillator. The oscillating frequency of oscillator can be controlled using the bias current of CCCTA, therefore FM and FSK wav

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15

Kotb, Amer, and Yasser Mohamed. "Phase-Shift Keying Modulated Data Signal Using SOA-MZI-Based All-Optical Logic AND Gate at 80 Gb/s." International Journal of Optics 2018 (July 9, 2018): 1–8. http://dx.doi.org/10.1155/2018/5864530.

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All-optical logic AND operation with phase-shift keying (PSK) modulated data signals based on a semiconductor optical amplifier (SOA) assisted Mach-Zehnder interferometer is numerically analyzed and investigated. By solving the rate equations of the SOA, the dependence of the quality factor on the critical parameters of the input signal and the SOA is examined, including the impact of the amplified spontaneous emission to obtain realistic results. The obtained results confirm that the all-optical logic AND scheme with PSK modulated data signals is capable of operating at a data rate of 80 Gb/s

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Marugin, Aleksey S., Vladimir K. Orlov, and Rumiya R. Khaziakhmetova. "RADIO NAVIGATION SYSTEM BROADBAND SIGNAL SEARCH." Journal of the Russian Universities. Radioelectronics, no. 6 (January 18, 2019): 66–74. http://dx.doi.org/10.32603/1993-8985-2018-21-6-66-74.

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The study object is the search procedure for a ground-based radionavigation system signal using noise-like discrete signals with a long baseline. A comparative analysis of the signal search quality indicators is carried out, which is the most time-consuming procedure with different navigation signal modulation formats in the worst-case conditions and with a limited frequency resource allocated to the system. Bandwidth efficiency of noise-like signals (NLS) with phase shift keying (PSK) and minimal frequency shift keying (MFSK) are analyzed. Relations are obtained for the average maximum search

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Ge, Qian, Qian Wang, Xiao Yan, and Ling He. "Algorithms for Automatic Modulation Recognition in Wireless Monitoring Applications." Applied Mechanics and Materials 241-244 (December 2012): 1772–78. http://dx.doi.org/10.4028/www.scientific.net/amm.241-244.1772.

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The paper proposes an automatic modulation recognition scheme based on instantaneous features of intercepted signals. The modulation classifier can discriminate modulations such as Amplitude Modulation (AM), Double Side Band (DSB), Single Side Band (SSB), Frequency Modulation (FM), M-ary Amplitude Shift Keying (M-ASK), M-ary Frequency Shift Keying (M-FSK), M-ary Phase Shift Keying (M-PSK) and M-ary Quadrature Amplitude Modulation (M-QAM) without any prior information. The scheme is with simple structure, computationally simpler, and suitable for real-time processing. And the recognition parame

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18

Park, Ga-Rin, Sang-Ho Park, and Kwang-Ryul Baek. "Improved Frequency Sweep Keying CDMA Using Faster R-CNN for Extended Ultrasonic Crosstalk Reduction." Sensors 23, no. 23 (2023): 9550. http://dx.doi.org/10.3390/s23239550.

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Ultrasonic sensors are inexpensive and provide highly accurate measurements, even with simple hardware configurations, facilitating their use in various fields. When multiple ultrasonic sensors exist in the measurement space, crosstalk occurs due to other nodes, which leads to incorrect measurements. Crosstalk includes not only receiving homogeneous signals from other nodes, but also overlapping by other signals and interference by heterogeneous signals. This paper proposes using frequency sweep keying modulation to provide robustness against overlap and a faster region-based convolutional neu

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Li, Meina, and Youn Kim. "Feasibility Analysis on the Use of Ultrasonic Communications for Body Sensor Networks." Sensors 18, no. 12 (2018): 4496. http://dx.doi.org/10.3390/s18124496.

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Ultrasonic waves have good propagation in the human body and have been widely applied in biomedical device design without any reported side effects. Therefore, ultrasonic waves can provide an alternative method as an information carrier for body sensor networks (BSNs). This paper presents a novel wireless communication method that uses ultrasonic sound waves as a medium for healthcare systems. We investigated the feasibility of our proposal by testing it in a real digital communication experimental setup. To find an acceptable modulation method, the functionality of the proposed ultrasound-bas

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Karthik, Hosavaranchi Puttaraju. "PSK Method for Controlling LED Pool Lighting Systems: An Innovative Path to Enhance User Experience." INTERNATIONAL JOURNAL OF INNOVATIVE RESEARCH AND CREATIVE TECHNOLOGY 5, no. 4 (2019): 1–4. https://doi.org/10.5281/zenodo.14183891.

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The pool lighting industry commonly employs a method of cycling power (turning lights off and on) to change lighting sequences or colors, which negatively impacts the customer experience. This paper proposes the implementation of Phase-Shift Keying (PSK) as a solution for more seamless control. PSK enables communication between the controller and the LED lights without requiring power cycling, maintaining a continuous power supply. This can improve the user experience while preserving the two-wire system with Class 2 isolation, ensuring both electrical safety and reliable performance.

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Kulikov, G. V., and Trung Tien Do. "Efficiency of adaptive filter with envelope tracking algorithm when receiving signals with multi-position PSK against the background of non-fluctuation interferences." Russian Technological Journal 8, no. 5 (2020): 34–43. http://dx.doi.org/10.32362/2500-316x-2020-8-5-34-43.

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The energy and spectral advantages of signals with phase-shift keying predetermined their widespread use in modern digital navigation, communications and television systems. The use of this type of signal in a multi-position format with an increased number of possible phase states allows increasing the information capacity of the channel signal, and consequently the throughput rate of radio channels. The presence of non-fluctuation interference in such radio channels greatly reduces the noise immunity of information reception. A well-known way to deal with such interference is to use adaptive

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Xu, Jian Fei, Fu Ping Wang, and Zan Ji Wang. "A New Classification Algorithm of MPSK Signals Based on Phase Distribution." Applied Mechanics and Materials 446-447 (November 2013): 1028–33. http://dx.doi.org/10.4028/www.scientific.net/amm.446-447.1028.

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Based on the phase distribution which is defined in this paper, a new classification algorithm of M-ary phase shift keying (PSK) signals is proposed. To classify the modulation type of the M-ary PSK signal, the phase distribution of the unclassified signal is calculated firstly, and then the characters of the signal modulation are extracted by computing the FFT of the phase distribution. Moreover, the method is improved in this paper that it is extended to MPSK baseband signals with frequency offset, and the calculation complexity is reduced. Simulation result shows that the accuracy rate of t

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Kansal, Lavish, Gurjot Singh Gaba, Naveen Chilamkurti, and Byung-Gyu Kim. "Efficient and Robust Image Communication Techniques for 5G Applications in Smart Cities." Energies 14, no. 13 (2021): 3986. http://dx.doi.org/10.3390/en14133986.

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A wide range of multimedia applications must be supported by the modern fifth generation (5G) wireless communication systems for realizing the diverse applications in smart cities. The diverse applications such as real-time monitoring of roads, smart homes, smart industries, etc., for a sustainable smart city emphasizes a robust and efficient image transmission. In this paper, the influence of maximal ratio combining (MRC) on the reception of images with different orthogonal frequency division multiplexing (OFDM) versions is studied. The different OFDM versions considered here are the fast Fou

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Han, Yishi, Changsheng Zeng, Yongming Zhong, et al. "Photonic Generation of Reconfigurable Ternary Modulated Microwave Signals with a Large Frequency Range." Applied Sciences 12, no. 12 (2022): 5777. http://dx.doi.org/10.3390/app12125777.

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A photonic scheme generating ternary modulated signals, which include amplitude, phase, and frequency modulated signals, has been proposed and demonstrated. This scheme is based on a dual-polarization dual-parallel Mach-Zehnder modulator (DP-DPMZM), where the X-DPMZM is used to generate an optical frequency comb (OFC), and the Y-DPMZM is utilized to accomplish ternary modulation. The key feature of this scheme is that ternary modulated signals with eight wavebands can be obtained by using only the DP-DPMZM in situations of different input signals. In the simulation, a 2.5 Gbit/s amplitude shif

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Saha, D. "Channel coding with quadrature-quadrature phase shift-keying (Q/sup 2/PSK) signals." IEEE Transactions on Communications 38, no. 4 (1990): 409–17. http://dx.doi.org/10.1109/26.52650.

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El-Ghandour, O. M., and D. Saha. "Differential detection in quadrature-quadrature phase shift keying (Q/sup 2/PSK) systems." IEEE Transactions on Communications 39, no. 5 (1991): 703–12. http://dx.doi.org/10.1109/26.87161.

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Aikawa, Yohei. "Optical Comparison Operation for 8-Bit QPSK-Modulated Signal by Using Serially-Cascaded Delay Line Interferometer." Applied Sciences 8, no. 9 (2018): 1440. http://dx.doi.org/10.3390/app8091440.

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An all-optical comparator is desirable to realize large-capacity, fully-transparent, and energy-efficient communication systems, as it is considered to be a fundamental component to perform most of the operations, including packet switching, label recognition, error detection and correction, and so on. However, most of the previous studies have been confined to the on–off keying (OOK) modulation format, not phase-shift keying (PSK) modulation. In this paper, the author provides a novel optical comparator designed for quadrature PSK (QPSK)-modulated signal, which comprises a code word with 8-bi

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Mohammed, Ali Abdulwahhab, Li Yu, Manar Al-Kali, and Desheng Wang. "Analysis of Amplify-and-Forward Cooperative Networks with Nakagami-m fading Channels For MRC Diversity Combining." TELKOMNIKA Indonesian Journal of Electrical Engineering 16, no. 3 (2015): 546. http://dx.doi.org/10.11591/tijee.v16i3.1646.

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In this paper we study the effect of diversity combining for Nakagami -m fading Channels in the amplify-and-forward cooperative networks.We derive the cumulative density function (CDF), probability density function (PDF) and moment generating function (MGF) for the multiple relay amplify-and-forward network with single half duplex channel maximal ratio combiner (MRC). In this network we investigate the cases of MRC at the destination, as well derive the exact Symbol Error Rate (SER) of M-ary phase-shift keying (M-PSK), and quadrature amplitude modulation (M-QAM) in Nakagami -m fading environme

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Abe, Masami, Haruhiro Shiino, and Yasuo Shoji. "A Soft Decision Decoding Method in the Differential Phase Shift Keying." IEEJ Transactions on Electronics, Information and Systems 111, no. 11 (1991): 563–68. http://dx.doi.org/10.1541/ieejeiss1987.111.11_563.

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Sud, Seema. "High Order Chirp Rate Shift Keying Modulation Using the Fractional Fourier Transform." European Journal of Engineering Research and Science 2, no. 4 (2017): 1. http://dx.doi.org/10.24018/ejers.2017.2.4.314.

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In this paper, we discuss an improved demodulation scheme using the Fractional Fourier Transform (FrFT) for a modulation scheme employing chirp rate shift keying (CrSK). CrSK in conjunction with the FrFT enable very high order, e.g. more than 32-ary modulation schemes to be achievable with good bit error rate (BER) performance, even in the absence of coding, thereby overcoming limitations of traditional schemes including phase shift keying (PSK) or QAM (quadrature amplitude modulation). By using an FrFT-based demodulator, we expand our demodulation degrees of freedom from a single (e.g. freque

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Sud, Seema. "High Order Chirp Rate Shift Keying Modulation Using the Fractional Fourier Transform." European Journal of Engineering and Technology Research 2, no. 4 (2017): 1–5. http://dx.doi.org/10.24018/ejeng.2017.2.4.314.

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In this paper, we discuss an improved demodulation scheme using the Fractional Fourier Transform (FrFT) for a modulation scheme employing chirp rate shift keying (CrSK). CrSK in conjunction with the FrFT enable very high order, e.g. more than 32-ary modulation schemes to be achievable with good bit error rate (BER) performance, even in the absence of coding, thereby overcoming limitations of traditional schemes including phase shift keying (PSK) or QAM (quadrature amplitude modulation). By using an FrFT-based demodulator, we expand our demodulation degrees of freedom from a single (e.g. freque

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Wang, Jingjing, Na Li, Wei Shi, Yangyang Ma, Xiulong Liang, and Xinli Dong. "Capacity of 60 GHz Wireless Communications Based on QAM." Journal of Applied Mathematics 2014 (2014): 1–5. http://dx.doi.org/10.1155/2014/815617.

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With apparent advantages of the several GHz license-free spectrums, 10 W maximum transmit power, and so forth, 60 GHz wireless communication technology has become the first choice for Gbps level short-range wireless communications. This paper researches 60 GHz wireless communications over the additive white Gaussian noise channel. Channel capacity with quadrature amplitude modulation (QAM) is investigated for the unlicensed 59–64 GHz radio spectrum set aside by FCC. Moreover, the capacity with QAM is compared to that with phase shift keying (PSK). It is shown that QAM is capable of providing G

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Singh, Nitin Shankar, and Gurpartap Singh. "Performance Evaluation of Log-normal And Negative Exponential Channel Modeling Using Various Modulation Techniques in OFDM-FSO Communication." INTERNATIONAL JOURNAL OF COMPUTERS & TECHNOLOGY 4, no. 2 (2005): 639–47. http://dx.doi.org/10.24297/ijct.v4i2c2.4189.

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Free Space Optics (FSO) is one of the emerging technology which is thoroughly being popular and is basically using optical signals for the communication. The paper evaluates the bit error rate performance of the Free space Optics (FSO) system. To design a high performance communication link for the atmospheric FSO channel, it is of great importance to characterize the channel with proper model. The performance of the highly efficient, high data rate system is limited by the certain constraints like scintillation effects and atmospheric turbulence. The FSO communication system using Orthogonal

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Kadhim, Muthanna Ali, Ali Yousif Fattah, and Atheer Alaa Sabri. "Spectral efficiency and performance improvement of coherent optical transmission system." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 1 (2022): 290. http://dx.doi.org/10.11591/ijeecs.v27.i1.pp290-300.

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This paper presents an orthogonal frequency division multiplexing (OFDM) for a long-haul optical transmission system with high-rate transferability to alleviate dispersion effects. In addition, we suggest combining polarization division multiplexing (PDM) with coherent OFDM (CO-OFDM) to increase spectral efficiency (SE). Based on OptiSystem (2021) version 18.0" software package, a 100 Gbps single-channel PDM-CO-OFDM transmission system is investigated using different modulation formats; bipolar phase keying (BPSK), quadrature phase shift keying (QPSK), Eight-Phase-Shift Keying modulators (8-PS

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Kadhim, Muthanna Ali, Ali Yousif Fattah, and Atheer Alaa Sabri. "Spectral efficiency and performance improvement of coherent optical transmission system." Indonesian Journal of Electrical Engineering and Computer Science 27, no. 1 (2022): 290–300. https://doi.org/10.11591/ijeecs.v27.i1.pp290-300.

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This paper presents an orthogonal frequency division multiplexing (OFDM) for a long-haul optical transmission system with high-rate transferability to alleviate dispersion effects. In addition, we suggest combining polarization division multiplexing (PDM) with coherent OFDM (CO-OFDM) to increase spectral efficiency (SE). Based on OptiSystem (2021) version 18.0" software package, a 100 Gbps single-channel PDM-CO-OFDM transmission system is investigated using different modulation formats; bipolar phase keying (BPSK), quadrature phase shift keying (QPSK), Eight-Phase-Shift Keying modulators

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Effendi, Mohammad Ridwan, Rheyuniarto Sahlendar Asthan, and Achmad Munir. "Performance Evaluation of Fractal Wavelet Packet Transform on Wireless Communication Systems." Journal of ICT Research and Applications 18, no. 1 (2024): 36–47. http://dx.doi.org/10.5614/itbj.ict.res.appl.2023.18.1.3.

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The performance of the phase shift keying (PSK) modulation technique over additive white Gaussian noise (AWGN) and multipath propagation channels generally becomes worse for higher-order modes. Therefore, a new modulation technique should be provided in order to have a system that is capable of transmitting data with higher efficiency while maintaining better performance at the same time. This paper presents the development of a fractal wavelet packet transform incorporated within the M-ary PSK system, namely M-ary PSK orthogonal wavelet division multiplexing (OWDM), which is proposed to obtai

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Pacheco-Sanchez, Anibal, J. Noé Ramos-Silva, Nikolaos Mavredakis, Eloy Ramírez-García, and David Jiménez. "High-Data-Rate Modulators Based on Graphene Transistors: Device Circuit Co-Design Proposals." Electronics 13, no. 20 (2024): 4022. http://dx.doi.org/10.3390/electronics13204022.

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The multifunctionality feature of graphene field-effect transistors (GFETs) is exploited here to design circuit building blocks of high-data-rate modulators by using a physics-based compact model. Educated device performance projections are obtained with the experimentally calibrated model and used to choose an appropriate improved feasible GFET for these applications. Phase-shift and frequency-shift keying (PSK and FSK) modulation schemes are obtained with 0.6 GHz GFET-based multifunctional circuits used alternatively in different operation modes: inverting and in-phase amplification and freq

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Reddy, Gujjula Ramana, Chitra Perumal, Prakash Kodali, and Bodapati Venkata Rajanna. "Design and memory optimization of hybrid gate diffusion input numerical controlled oscillator." International Journal of Reconfigurable and Embedded Systems (IJRES) 12, no. 1 (2023): 78. http://dx.doi.org/10.11591/ijres.v12.i1.pp78-86.

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The numerically controlled oscillator (NCO) is one of the digital oscillator signal generators. It can generate the clocked, synchronous, discrete waveform, and generally sinusoidal. Often NCOs care utilized in the combinations of digital to analog converter (DAC) at the outputs for creating direct digital synthesizer (DDS). The network on chips (NOCs) are utilized in various communication systems that are fully digital or mixed signals such as synthesis of arbitrary wave, precise control for sonar systems or phased array radar, digital down/up converters, all the digital phase locked loops (P

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Ramana, Reddy Gujjula, Perumal Chitra, Kodali Prakash, and Venkata Rajanna Bodapati. "Design and memory optimization of hybrid gate diffusion input numerical controlled oscillator." International Journal of Reconfigurable and Embedded Systems (IJRES) 12, no. 1 (2023): 78–86. https://doi.org/10.11591/ijres.v12.i1.pp78-86.

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The numerically controlled oscillator (NCO) is one of the digital oscillator signal generators. It can generate the clocked, synchronous, discrete waveform, and generally sinusoidal. Often NCOs care utilized in the combinations of digital to analog converter (DAC) at the outputs for creating direct digital synthesizer (DDS). The network on chips (NOCs) are utilized in various communication systems that are fully digital or mixed signals such as synthesis of arbitrary wave, precise control for sonar systems or phased array radar, digital down/up converters, all the digital phase locked loops (P

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Guo, Jianzhong, Jinpeng Xiao, Jing Chen, et al. "Performance Analysis of LDPC-Coded OFDM in Underwater Wireless Optical Communications." Photonics 10, no. 3 (2023): 330. http://dx.doi.org/10.3390/photonics10030330.

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The performance of Low-Density Parity-Check (LDPC)-coded Orthogonal Frequency Division Multiplexing (OFDM) is investigated over turbulence channels in underwater wireless optical communications (UWOC). The relation between the bit error ratio (BER) and parameters such as the scintillation coefficient, signal-to-noise ratio (SNR), length of LDPC code, and order of OFDM is quantified by simulation. Results show that while the OFDM with subcarrier quadrature amplitude modulation (QAM-OFDM) has slightly better anti-turbulence performance than the OFDM with subcarrier phase shift keying modulation

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N, Sharan, Suma V. Shetty, and Dr H. C. Sateesh Kumar. "Digital Modulation in Modern Communication Systems." INTERANTIONAL JOURNAL OF SCIENTIFIC RESEARCH IN ENGINEERING AND MANAGEMENT 09, no. 04 (2025): 1–9. https://doi.org/10.55041/ijsrem43721.

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Digital modulation is a fundamental technology in modern communication systems, enabling efficient and reliable data transmission over wired and wireless networks. Compared to analog modulation, digital techniques such as Phase Shift Keying (PSK), Quadrature Amplitude Modulation (QAM), and Orthogonal Frequency Division Multiplexing (OFDM) offer higher data rates, superior noise immunity, and better spectral efficiency. These advantages make digital modulation essential for applications in mobile communication, satellite systems, and the Internet of Things (IoT). Additionally, digital modulatio

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Miftahul Amri, Muhammad, and Ghafar Ramadhan Faqih. "Intelligent Reflecting Surfaces Adaptive Beamsteering and PSK Direct Modulation." Engineering Science Letter 1, no. 01 (2022): 1–6. http://dx.doi.org/10.56741/esl.v1i01.58.

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Intelligent Reflecting Surfaces (IRS), a planar array consisting of a large number of low-cost and low-complexity metal patch elements, is predicted to be among the key technologies in future wireless communications. This is mainly due to its capability to improve wireless energy and spectrum efficiency by reconfiguring the wireless environment in a smart and flexible way. IRS is capable of shifting the phase, amplitude, frequency, or even polarity of the impinging electromagnetic (EM) wave. However, only the phase-shift type of IRS is widely adopted in most scenarios. In this paper, we exploi

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Chutpipat, Chaichomnan, and Khumsat Phanumas. "A 1.8 V 25 Mbps CMOS single-phase, phase-locked loop-based BPSK, QPSK demodulator." A 1.8 V 25 Mbps CMOS single-phase, phase-locked loop-based BPSK, QPSK demodulator 13, no. 6 (2023): 6102–17. https://doi.org/10.11591/ijece.v13i6.pp6102-6117.

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A single-phase binary/quadrature phase-shift keying (BPSK/QPSK) demodulator basing on a phase-locked loop (PLL) is described. The demodulator relies on a linear characteristic a rising-edge RESET/SET flipflop (RSFF) employed as a phase detector. The phase controller takes the average output from the RSFF and performs a sub-ranging/re-scaling operation to provide an input signal to a voltage-controlled oscillator (VCO). The demodulator is truly modular which theoretically can be extended for a multiple-PSK (m-PSK) signal. Symbol-error rate analysis has also been extensively carried out. Th

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Arny Megasari, Ni Made, I. GAK Diafari Djuni, and Ni Made Ary Esta Dewi. "ANALISIS INTERCARRIER INTERFERENCE (ICI) PADA OFDM-MIMO BERDASARKAN M-ARY PHASE SHIFT KEYING (M-PSK)." Jurnal SPEKTRUM 6, no. 1 (2019): 81. http://dx.doi.org/10.24843/spektrum.2019.v06.i01.p12.

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One of the techniques that are used to define the multipath fading it can make is Ortoghonal Frequency Division Multiplexing (OFDM). System on multicarrier technique is one that has a frequency of orthogonal to each other by using a narrow bandwidth. The weakness of the system on which occurred in mobile channel due to the technique of the time on a channel so that orthogonalitas on a subchannel would pose intercarrier interference and missing (ICI). This research aims to analyze the intercarrier interference (ICI) on the system on MIMO using BPSK and QPSK modulation in fading channel. In term

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Khatoon, A., and M. S. Rahman. "Symbol Error Performance Analysis and Comparison Between Alamouti and MRRC Diversity Combining Scheme for Wireless Communication." Journal of Scientific Research 2, no. 1 (2009): 54–66. http://dx.doi.org/10.3329/jsr.v2i1.3000.

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The symbol error performance of a wireless communication system is analyzed using diversity combining scheme in Rayleigh fading channels. The performance of the system is compared using Alamouti scheme and maximal-ratio receiver combining (MRRC) scheme. The performance results of the system are evaluated by numerical computation and by simulation using MATLAB. A detailed analysis and exact (closed-form) expressions of the probability of error of the wireless communication systems in Rayleigh fading channels are provided for both M-ary phase-shift keying (M-PSK) and M-ary quadrature amplitude m

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Sadchenko, Andrey, and Oleg Kushnirenko. "QPSK-Modulation Modem Invariant to the Rotation of the Signal Constellation Plane." Electrical, Control and Communication Engineering 14, no. 2 (2018): 149–56. http://dx.doi.org/10.2478/ecce-2018-0018.

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AbstractIn order to increase the efficiency of dedicated frequency channels, i.e. to increase the specific data transfer rate, multipositional quadrature phase shift keying (QPSK, aka 4-PSK) should be used. The problems with QPSK signal demodulation is a rotation of the signal constellation plane by an angle multiple of 90° and a slow response of the carrier oscillation recovery scheme. The study considers the existing methods for eliminating the phase ambiguity of the recovered carrier frequency in typical QPSK modems, and identifies the shortcoming of a low-speed response oscillation recover

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47

Chaichomnan, Chutpipat, and Phanumas Khumsat. "A 1.8 V 25 Mbps CMOS single-phase, phase-locked loop-based BPSK, QPSK demodulator." International Journal of Electrical and Computer Engineering (IJECE) 13, no. 6 (2023): 6102. http://dx.doi.org/10.11591/ijece.v13i6.pp6102-6117.

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A single-phase binary/quadrature phase-shift keying (BPSK/QPSK) demodulator basing on a phase-locked loop (PLL) is described. The demodulator relies on a linear characteristic a rising-edge RESET/SET flip-flop (RSFF) employed as a phase detector. The phase controller takes the average output from the RSFF and performs a sub-ranging/re-scaling operation to provide an input signal to a voltage-controlled oscillator (VCO). The demodulator is truly modular which theoretically can be extended for a multiple-PSK (m-PSK) signal. Symbol-error rate analysis has also been extensively carried out. The pr

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48

Edam, Salaheldin Mohamed, and Gui Xia Kang. "Disaster Management Issues in Ad-Hoc and WSNs with Healthcare and Communications Viewpoints." Applied Mechanics and Materials 229-231 (November 2012): 2770–74. http://dx.doi.org/10.4028/www.scientific.net/amm.229-231.2770.

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In recent years wireless ad-hoc and sensor network’s applications in disaster have drawn a lot of attention from both research and industry. Therefore, in order to improve the estimations that necessary for useful decision making for disaster personnel; this paper addresses disaster management issues in ad-hoc and WSNs with healthcare and communications viewpoints. We attempt to lift and discuss these issues and get some solutions to them. Accordingly, the theoretical bit error rate (BER) performances of four modes of quadratic-amplitude modulation (QAM) versus phase shift keying (PSK) is obta

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LIU, Yanming, Hailiang WEI, Lei SHI, and Bo YAO. "Adaptive protograph-based BICM-ID relying on the RJ-MCMC algorithm: a reliable and efficient transmission solution for plasma sheath channels." Plasma Science and Technology 24, no. 4 (2022): 045001. http://dx.doi.org/10.1088/2058-6272/ac56ca.

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Abstract For reentry communication, owing to the influence of the highly dynamic plasma sheath (PS), the parasitic modulation effect can occur and the received phase shift keying (PSK) signal constellation can be severely rotated, leading to unacceptable demodulation performance degradation. In this work, an adaptive non-coherent bit-interleaved coded modulation with iterative decoding (BICM-ID) system with binary PSK (BPSK) modulation and protograph low-density parity-check under the PS channel is proposed. The proposed protograph-based BICM-ID (P-BICM-ID) system can achieve joint processing

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Almaamory, Aqiel N. "LDPC CODED MULTIUSER MC-CDMA PERFORMANCE OVERMULTIPATH RAYLEIGH FADING CHANNEL." Journal of Engineering 17, no. 04 (2011): 1039–46. http://dx.doi.org/10.31026/j.eng.2011.04.28.

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This work presents the simulation of a Low density Parity Check (LDPC) coding scheme withmultiuserMulti-Carrier Code Division Multiple Access (MC-CDMA) system over Additive WhiteGaussian Noise (AWGN) channel and multipath fading channels. The decoding technique used inthe simulation was iterative decoding since it gives maximum efficiency with ten iterations.Modulation schemes that used are Phase Shift Keying (BPSK, QPSK and 16 PSK), along with theOrthogonal Frequency Division Multiplexing (OFDM). A 12 pilot carrier were used in the estimatorto compensate channel effect. The channel model used

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