Results 21 to 30 of about 45,199 (262)
Improved Markov model for Rayleigh fading envelope
Electronics Letters, 2002 An improved Markov model for Rayleigh fading is proposed. Such a system considers both the amplitude and the speed of the fading envelope which jointly represent the Markov state. By properly selecting the state space size, proper fitting between the proposed system and Jakes' Rayleigh fading simulator has been obtained.
BERGAMO, PIERPAOLO +4 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
Jurnal Nasional Teknik Elektro, 2017 This study is the simulation of SPIHT image compression using diversity selection combining techniques. The image is compressed by using SPIHT compression techniques after wavelet decomposition.
Baharuddin Abbas
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, 2011 Fading is the time-dependent variation in transmitted signal strength through a complex medium, due to interference or temporally evolving multipath scattering.
Anlage, Steven M. +3 more
core +1 more source
Frequency Estimation in Multipath Rayleigh-Sparse-Fading Channels [PDF]
IEEE Transactions on Wireless Communications, 2004 Maximum-likelihood (ML) data-aided frequency estimation in multipath Rayleigh-fading channels with sparse impulse responses is investigated. We solve this problem under the assumption that the autocorrelation matrix of the pilot signal can be approximated by a diagonal matrix, the fading of different path amplitudes are independent from each other, and
Zakharov, Y V, Baronkin, V M, Tozer, T C
openaire +2 more sources
Jurnal Nasional Teknik Elektro, 2016 In digital communication systems, their fading and noise in the channel will disrupt or degrade the performance of a digital communication system. Where this disorder, can cause the error detection signal, so as to change bits or symbols at the receiver
Baharuddin Abbas, Ondri Yudha Rusli
doaj +1 more source
Energy-Efficient Index Modulation With In-Phase/Quadrature Format in the Generalized Fading Channel
IEEE Access, 2021 Dual-mode (DM) or multi-mode (MM) index modulation (IM) techniques with the in-phase/quadrature (IQ) format have been investigated for improving the performance of the orthogonal frequency division multiplexing with IM (OFDM-IM) system in the frequency ...
Mengyi Wang, Zhihui Chen, Zhenxing Chen
doaj +1 more source
On the Second Order Statistics of the Multihop Rayleigh Fading Channel
, 2009 Second order statistics provides a dynamic representation of a fading channel and plays an important role in the evaluation and design of the wireless communication systems.
Hadzi-Velkov, Zoran +2 more
core +1 more source
Level Crossing Rate and Average Fade Duration of the Multihop Rayleigh Fading Channel
, 2008 We present a novel analytical framework for the evaluation of important second order statistical parameters, as the level crossing rate (LCR) and the average fade duration (AFD) of the amplify-and-forward multihop Rayleigh fading channel.
Hadzi-Velkov, Zoran +2 more
core +1 more source
Two new sum-of-sinusoids-based methods for the efficient generation of multiple uncorrelated rayleigh fading waveforms [PDF]
, 2009 This paper deals with the design of a set of multiple uncorrelated Rayleigh fading waveforms. The Rayleigh fading waveforms are mutually uncorrelated, but each waveform is correlated in time.
Hogstad, Bjørn Olav +2 more
core +2 more sources