Results 21 to 30 of about 51,738 (210)
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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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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Energy Detection for M-QAM Signals [PDF]
IEEE Access, 2021 Accurate threshold setting for energy detector is important for example in dynamic spectrum access. This requires accurate statistical distribution models of the observed energy. In this paper, we consider energy detection (ED) for $M$ -ary quadrature amplitude modulation (QAM) signals.
Shun Ishihara +2 more
openaire +4 more sources
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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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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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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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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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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On Achievable Rates for Long-Haul Fiber-Optic Communications [PDF]
, 2015 Lower bounds on mutual information (MI) of long-haul optical fiber systems for hard-decision and soft-decision decoding are studied. Ready-to-use expressions to calculate the MI are presented.
Alvarado, Alex +3 more
core +3 more sources