Results 231 to 240 of about 130,979 (278)

The Fading Number of a Multiple-Access Rician Fading Channel

IEEE Transactions on Information Theory, 2009
The fading number of a noncoherent two-user Ri-cian fading channel is derived. The fading number is the second term in the high-SNR expansion of the sum-rate capacity of this multiple-access channel. It is shown that the fading number is identical to the fading number of the single-user Rician fading channel that is obtained when the user seeing the ...
Gu-Rong Lin, Stefan M. Moser
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On the channel capacity of wireless fading channels

Proceedings of the 41st IEEE Conference on Decision and Control, 2002., 2004
The objectives of this paper are twofold. First, to point out the significance of certain results on stochastic processes in computing the channel capacity for flat fading wireless channels. Next, to design an optimal encoding and decoding strategies for general sources, when the channel is perfectly known to both transmitter and receiver.
Charalambos D. Charalambous, Stojan Z. Denic   +1 more
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ARMA Synthesis of Fading Channels

IEEE Transactions on Wireless Communications, 2008
Computationally scalable and accurate estimation, prediction, and simulation of wireless communication channels is critical to the development of more adaptive transceiver algorithms. Previously, the application of autoregressive moving average (ARMA) modeling to fading processes has been complicated by ill-conditioning and nonlinear parameter ...
Hani Mehrpouyan, Steven D. Blostein
openaire   +1 more source

Fading channel communications

IEEE Communications Magazine, 1980
Adaptive processing can reduce the effects of fading on beyond-the-horizon digital radio links. Two radio propagation channels for beyond-thehorizon communications, troposcatter, and HF are currently being reexamined. In the past, transmission over these radio channels had been considered unreliable due to fading effects.
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Modeling wireless channel fading

IEEE 54th Vehicular Technology Conference. VTC Fall 2001. Proceedings (Cat. No.01CH37211), 2002
We compare measured fading data with the popular Rayleigh model. Our results show that this model does not agree with the experimental data. As an alternative, we approximate the experimental data using autoregressive moving average (ARMA) models. To validate the models, we compare several characteristics of fading obtained analytically, by simulation,
William Turin, Rittwik Jana, Carol C. Martin, Jack H. Winters   +3 more
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Feedback Communications in Fading Channels

IEEE Transactions on Communications, 1974
A communication system using noiseless feedback for Rayleigh fading channels is proposed. Pilot tone signaling is used to provide channel amplitude and phase information for the detection of antipodal signals. Channel estimates generated in the receiver are fed back to control the transmitter power and rate.
R. Srinivasan, R. L. Brewster
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Multilevel Coding for Fading Channels

2007 IEEE International Symposium on Information Theory, 2007
This paper proposes a multilevel coding system with linear mapping for fading channels. The receiver performs multi-stage decoding. Each stage employs the decision-aided successive estimation and decoding method that decouples the channel estimation and decoding without loss of information.
Mei Chen, Oliver M. Collins
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On coding for block fading channels

IEEE Transactions on Information Theory, 2000
Summary: This work considers the achievable performance for coded systems adapted to a multipath block-fading channel model. This is a particularly useful model for analyzing mobile-radio systems which employ techniques such as slow frequency-hopping under stringent time-delay or bandwidth constraints for slowly time-varying channels.
Raymond Knopp, Pierre A. Humblet
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Deterministic Combining for Fading Channels

2009 IEEE International Conference on Communications, 2009
For a communication system employing receive diversity in flat Rician fading, we consider linear combining receivers with deterministic weights. Two receiver structures are proposed: (1) a modified maximum likelihood receiver in which detection is performed by maximizing the likelihood function of the combined received signal, (2) a deterministic ...
Ranjan K. Mallik, Jack H. Winters
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Signaling constellations for fading channels

IEEE Transactions on Communications, 1999
The performance of various coherent 8-ary and 16-ary modulations in additive white Gaussian noise (AWGN) and slowly fading channels are analyzed. New expressions for the exact symbol error rates (SER) in fading with diversity combining are derived for any two-dimensional signaling format having polygonal decision boundaries.
Xiaodai Dong, Norman C. Beaulieu, Paul H. Wittke   +2 more
openaire   +1 more source