Results 251 to 260 of about 88,055 (289)

An MLSE receiver using channel classification for Rayleigh fading channels

IEEE Journal on Selected Areas in Communications, 2000
We propose a channel classification method that identifies the delay path profile of Rayleigh fading channels, which can be used in conjunction with conventional maximum-likelihood sequence estimation (MLSE) receivers. The proposed method determines the appropriate number of delay taps for the MLSE trellis, based on a decision variable obtained from ...
Wonjin Sung, In-Kyung Kim
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Co-channel interference reduction in Rayleigh fading channels

Digital Signal Processing, 2006
Abstract Interference can be a significant problem in loosely organized networks such as ad-hoc radio networks. One technique for dealing with interference is to attempt joint detection of all signals arriving at a node. Iterative algorithms based on the turbo-principle yield significant performance improvements when applied to this problem.
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Analog joint source-channel coding in Rayleigh fading channels

2011 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2011
We consider discrete-time all-analog-processing joint source-channel coding, using non-linear spiral-like curves. We assume a Rayleigh channel, where the receiver may employ or not multiple antennas. Maximum Likelihood (ML) and Minimum Mean Square Error (MMSE) detection are considered.
Glauber Gomes de Oliveira Brante, Richard Demo Souza, Javier Garcia-Frías   +2 more
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Construction of Polar Codes in Rayleigh Fading Channel

IEEE Communications Letters, 2019
In this letter, we investigate the effective construction method of the polar codes in the Rayleigh fading channel (RFC) based on the Gaussian approximation (GA) algorithm. For the RFC, two algorithms are proposed to find the equivalent binary input AWGN channel (BIAWGNC).
Dekun Zhou, Kai Niu 0001, Chao Dong 0002
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Multiuser scheduling over rayleigh fading channels

GLOBECOM '03. IEEE Global Telecommunications Conference (IEEE Cat. No.03CH37489), 2004
Forthcoming wideband wireless systems are supposed to support services with loose delay requirements, which allows for scheduling of data. In this work we investigate fast transmission scheduling for downlink CDMA over a Rayleigh fading channel.
Fredrik Berggren, Riku Jäntti
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Analysis of Cooperative TDMA in Rayleigh Fading Channels

IEEE Transactions on Vehicular Technology, 2013
The time-division-multiple-access-based (TDMA) protocol has been widely utilized as a reliable media access control (MAC) mechanism. By allocating each user a dedicated time slot, a given TDMA user transmits its packets in its exclusively assigned time slots, whereas other users are in idle mode (not transmitting). However, in this paper, a cooperative
Nansai Hu, Yu-Dong Yao, Zhuo Yang
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Optimized Selection Diversity for Rayleigh Fading Channels

IEEE Transactions on Communications, 1982
This paper considers the choice of the number of diversity branches for minimizing the bit error rate of a selection diversity system using noncoherent binary frequency-shift keying modulation for transmission over a Rayleigh fading Gaussian channel. An exact expression for the optimum number of branches, L_{sel}^{\ast} , is given.
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Water filling capacity of Rayleigh MIMO channels

12th IEEE International Symposium on Personal, Indoor and Mobile Radio Communications. PIMRC 2001. Proceedings (Cat. No.01TH8598), 2002
MIMO channels can attain high capacities provided that the propagation medium contains enough scatterers. The capacity of MIMO channels can further be increased by performing optimal power distribution over transmit antennas. This, in turn, necessitates knowledge of the channel at the transmitter.
Mohammad Ali Khalighi, Jean-Marc Brossier, Geneviève Jourdain, Kosai Raoof   +3 more
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Probability distributions of SIR in a Rayleigh fading channel

AFRICON 2015, 2015
In fading channel when the interfere signal is a random variable, the resulting signal-to-interference-plus-noise ratio (SINR) or signal-to-interference ratio (SIR) is also random and its distribution has to be known for a correct description of the receiver.
Murad Ridwan, Mohammad Abdo, Eduard A. Jorswieck   +2 more
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Exact Coherence Bandwidth of Rayleigh Fading Channels

2007 IEEE 18th International Symposium on Personal, Indoor and Mobile Radio Communications, 2007
Determination of the coherence bandwidth for multipath fading channels is of great importance for wireless systems design. However, the calculation of the coherence bandwidth so far has relied on an empirical formula. In this paper, we derive an exact coherence bandwidth formula for Rayleigh fading channels. The use of the new formula is illustrated by
Keith Q. T. Zhang, Shenghui Song 0001
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