Results 31 to 40 of about 76,661 (236)
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
doaj +1 more source
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
doaj +1 more source
Enhancing MB-OFDM throughput with dual circular 32-QAM [PDF]
, 2008 Quadrature Phase Shift Keying (QPSK) and Dual Carrier Modulation (DCM) are currently used as the modulation schemes for Multiband Orthogonal Frequency Division Multiplexing (MB-OFDM) in the ECMA-368 defined Ultra-Wideband (UWB) radio platform.
Sherratt, R.S., Yang, R.
core +1 more source
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
On the Performance Analysis of Higher Order QAM Schemes Over Mixed RF/FSO Systems
IEEE Transactions on Vehicular Technology, 2020 In this work, the performance of a dual-hop variable gain amplify-and-forward (AF) mixed radio frequency (RF)/free space optics (FSO) system is analyzed in details.
P. Singya +3 more
semanticscholar +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
doaj +1 more source
On Low Complexity Detection for QAM Isomorphic Constellations [PDF]
, 2017 Despite of the known gap from the Shannon's capacity, several standards are still employing QAM or star shape constellations, mainly due to the existing low complexity detectors.
Kayhan, Farbod
core +2 more sources
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
doaj +1 more source
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
doaj +1 more source
Generalized Quantum Arthur-Merlin Games [PDF]
, 2014 This paper investigates the role of interaction and coins in public-coin quantum interactive proof systems (also called quantum Arthur-Merlin games).
Gall, François Le +2 more
core +2 more sources