Results 31 to 40 of about 3,362 (185)
Correlation scheme of frame synchronization in communication systems with QPSK-modulation
Tekhnologiya i Konstruirovanie v Elektronnoi Apparature, 2017 The information efficiency of communication systems using quadrature amplitude modulation is reduced because of the costs for data transmission necessary to provide frame synchronization and the required time to search for the sync signal and to go into ...
A. V. Sadchenko +4 more
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Alexandria Engineering Journal, 2021 The reliability and efficiency of free space optics (FSO) systems is significantly degraded by attenuation caused by different climate conditions and atmospheric turbulence. In this work, an FSO transmission system with high-speed transmission capability
Mehtab Singh +4 more
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QAM Based Physical Layer Authentication Technology for Cooperative Communication Systems [PDF]
Zhengzhou Daxue xuebao. Gongxue banA quadrature amplitude modulation (QAM) based cooperative physical layer authentication mechanism was proposed for the identity authentication in two-user cooperative communication systems. In the proposed mechanism, two single-antenna users transmitted
HAN Gangtao +4 more
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IEEE Access, 2022 We report a multi–dimensional quadrature amplitude modulation with M-ary differential phase shift keying (QAM-MDPSK) modulation for optical access network transmission systems employing a Mach–Zehnder modulator (MZM) and a phase modulator ...
Joungmoon Lee +3 more
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IEEE Open Journal of the Communications Society, 2021 Communication system’s performance is sensitive to bandwidth, power, cost etc. There have been various solutions to improve the performance, out of them, one of the fundamental solutions over the years is design of optimum modulation schemes.
Praveen Kumar Singya +4 more
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QAM to circular isomorphic constellations [PDF]
2016 8th Advanced Satellite Multimedia Systems Conference and the 14th Signal Processing for Space Communications Workshop (ASMS/SPSC), 2016 Employing high order constellations is inevitable in order to achieve higher spectral efficiency in satellite communi- cation systems. In DVB-S2X standard, constellations with up to 256 points have been included. However, optimizing such high order constellations is a difficult task.
openaire +1 more source
Implementation of Reed-Solomon RS(255,239) Code
Proceedings of the International Conference on Applied Innovations in IT, 2014 In this paper the construction of Reed-Solomon RS(255,239) codeword is described and the process of coding and decoding a message is simulated and verified.
Maja Malenko
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Generalized Frequency Division Multiplexing-Based Low-Power Underwater Acoustic Image Transceiver
Sensors, 2021 In this paper, a low-power underwater acoustic (UWA) image transceiver based on generalized frequency division multiplexing (GFDM) modulation for underwater communication is proposed.
Chin-Feng Lin +5 more
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Delivery of 12QAM Single Carrier Signal in a MIMO Radio-Over-Fiber System at 60 GHz
IEEE Photonics Journal, 2017 As we know, the gap between 8-QAM and 16-QAM can be filled smoothly by introducing 12-QAM. In this paper, we experimentally demonstrated a reliable 10 Gbaud-rate transmission of polarization multiplexed 12-QAM single carrier signal in a MIMO radio-
Miao Kong, Wen Zhou
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Analisa Unjuk Kerja Software Defined Radio (SDR) dengan Teknik Quadrature Amplitude Modulation (QAM)
Infotekmesin: Media Komunikasi Ilmiah Politeknik Cilacap, 2021 The development of wireless communication technology require technology (software and hardware) that can keep up with changing standards. SDR platform is a software-based wireless technology that can keep up with technological developments without ...
Jenny Putri Hapsari, Munaf Ismail
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