Results 201 to 210 of about 1,713 (254)
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Capacity of Channels With Frequency-Selective and Time-Selective Fading
IEEE Transactions on Information Theory, 2010This paper finds the capacity of single-user discrete-time channels subject to both frequency-selective and time-selective fading, where the channel output is observed in additive Gaussian noise. A coherent model is assumed where the fading coefficients are known at the receiver. Capacity depends on the first-order distributions of the fading processes
Antonia M Tulino +2 more
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Adaptive channel selection in frequency-selective fading environment
1999 IEEE International Conference on Communications (Cat. No. 99CH36311), 2003This paper proposes an adaptive channel selection method that reduces signal distortion due to frequency selective fading and thereby improving the performance of mobile communication. In this method a channel is adaptively selected by estimating current channel condition with mean square decision error as a measure.
Osamu Muta, Yoshihiko Akaiwa
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Universal Decoding for Frequency-Selective Fading Channels
IEEE Transactions on Information Theory, 2005We address the problem of universal decoding in unknown frequency-selective fading channels, using an orthogonal frequency-division multiplexing (OFDM) signaling scheme. A block-fading model is adopted, where the bands' fading coefficients are unknown yet assumed constant throughout the block.
Ofer Shayevitz, Meir Feder
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Modulation diversity for frequency-selective fading channels
IEEE Transactions on Information Theory, 2003In this article, modulation diversity (MD) for frequency-selective fading channels is proposed. The achievable performance with MD is analyzed and a simple design criterion for MD codes for Rayleigh-fading channels is deduced from an upper bound on the pairwise error probability (PEP) for single-symbol transmission.
Robert Schober +3 more
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A frequency offset estimation technique for frequency-selective fading channels
IEEE Communications Letters, 2001Rapid frequency offset estimation is required in burst communication systems. The performance of traditional open loop frequency estimation techniques is severely degraded by multipath propagation. We present a new data-aided technique for frequency offset estimation in the presence of strong multipath.
Harish Viswanathan +1 more
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Optimal training for MIMO frequency-selective fading channels
Conference Record of the Thirty-Sixth Asilomar Conference on Signals, Systems and Computers, 2002., 2003High data rates give rise to frequency-selective propagation effects. Space-time multiplexing and/or coding offer attractive means of combating fading and boosting capacity of multi-antenna communications. As the number of antennas increases, channel estimation becomes challenging because the number of unknowns increases, and the power is split at the ...
Xiaoli Ma +2 more
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Information rates of the noncoherent frequency selective fading channel
2009 47th Annual Allerton Conference on Communication, Control, and Computing (Allerton), 2009This paper examines ways of improving channel estimation using successive decoding for the time varying frequency selective fading channel in a point to point wireless communication system. The channel state information (CSI) is not known a priori at either the transmitter or the receiver.
Jing Huang +3 more
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Turbo product codes on frequency selective fading channel
Vehicular Technology Conference. IEEE 55th Vehicular Technology Conference. VTC Spring 2002 (Cat. No.02CH37367), 2003In this article, we present a new scheme that combines the turbo product codes with a simple single carrier frequency domain based equalization algorithm. By using transmit diversity in frequency selective Rayleigh fading channels, the system can resist intersymbol interference effectively.
Cong Shi +4 more
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