Results 21 to 30 of about 1,330,151 (239)
Space Time Block Coded Multi-user CDMA Systems over Rayleigh Fading Channel
, 2008 This paper investigates the performance and capacity of space time block coded (STBC) multi-user CDMA system over Rayleigh fading channel condition using multiple transmit antennas.
Haque, Md. Hasibul +7 more
core +2 more sources
MIMO system capacity based on different numbers of antennas
Results in Engineering, 2022 This paper analyzed and compared the ergodic channel capacities of several typical channel systems (SISO, SIMO, MISO, MIMO) in independent identically distributed flat Rayleigh fading channels. The theoretical and simulation results show that the ergodic
Yinjie Jia, Pengfei Xu, Xinnian Guo
doaj +1 more source
Journal of King Saud University: Computer and Information Sciences, 2016 In this paper we evaluate the performance of cooperative spectrum sensing (CSS) where each cognitive radio (CR) employs an improved energy detector (IED) with multiple antennas and uses selection combining (SC) for detecting the primary user (PU) in ...
Srinivas Nallagonda +2 more
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Instantaneous Capacity of OFDM on Rayleigh-Fading Channels [PDF]
IEEE Transactions on Information Theory, 2007 For a power limited orthogonal frequency-division multiplexing (OFDM) system transmitting a large number N of subcarriers over a Rayleigh-fading channel, the distribution of the instantaneous capacity is shown to be approximately Gaussian. The mean and variance of the approximating distribution are derived.
Alan Clark +2 more
openaire +3 more sources
Compensating for Channel Fading in DS-CDMA Communication Systems Employing ICA Neural Network Detectors [PDF]
Journal of Systemics, Cybernetics and Informatics, 2005 In this paper we examine the impact of channel fading on the bit error rate of a DS-CDMA communication system. The system employs detectors that incorporate neural networks effecting methods of independent component analysis (ICA), subspace estimation of
David Overbye, Roland Priemer
doaj
An overview and analysis of BER for three diversity techniques in wireless communication systems [PDF]
Yugoslav Journal of Operations Research, 2015 Characteristics of a wireless communication channel are subjected to a large scale deterioration process, referred to as the problem of fading. This paper discusses different techniques for mitigating the fading problems.
Mitić Dragan +3 more
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Multiuser diversity in correlated Rayleigh-fading channels [PDF]
EURASIP Journal on Wireless Communications and Networking, 2012 This article studies the effect of scheduling and multiuser diversity on the performance of correlated Rayleigh-fading channels. More specifically, the power-limited channel average rate is obtained for quasi-static correlated fading channels. The results are obtained in the cases where there is perfect or imperfect channel state information available ...
Behrooz Makki, Thomas Eriksson
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SCMA codebooks design for Rayleigh fading channel
Tongxin xuebao, 2022 According to the symbol error eate (SER) of the superimposed constellation, the near-optimal space code multiple access (SCMA) codebooks were explored under uplink and downlink Rayleigh fading channels, respectively.A near-optimal codebook design scheme ...
Tuofeng LEI +3 more
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On the MIMO Capacity for Distributed System under Composite Rayleigh/Rician Fading and Shadowing
International Journal of Antennas and Propagation, 2015 Wireless channels are commonly affected by short-term fading and long-term fading (shadowing). The shadowing effects must be taken into account also when mobility is present in the wireless scenario.
Santiago González-Aurioles +4 more
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New Golay decoding method using auto-encoder and OSD
ICT ExpressIn this study, we explore the potential of leveraging machine learning techniques, specifically auto-encoders (AE), for the decoding of linear block codes.
Hyun Woo Cho, Young Joon Song
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