Results 131 to 140 of about 738 (173)

Blind equalization of MIMO channels

2003 4th IEEE Workshop on Signal Processing Advances in Wireless Communications - SPAWC 2003 (IEEE Cat. No.03EX689), 2003
This paper introduces a blind MIMO equalization algorithm for convolutive mixtures. A parametrization of the equalizer is proposed when observations are whitened. From theoretical results, a numerical algorithm is then derived. This algorithm is based on the solution of a polynomial system, which some values of output cumulant multi-correlations enter.
Rota, Ludwig, Comon, Pierre, Icart, Sylvie   +2 more
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Filterbanks for blind channel identification and equalization

IEEE Signal Processing Letters, 1997
Multirate precoding using filterbanks induces cyclo-stationarity at the transmitter and guarantees blind identifiability of frequency selective communication channels with minimal decrease of information rate and without restrictions on zero locations. Finite impulse response (FIR) filterbank decoders are capable of equalizing blindly (and perfectly in
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A blind method for SIMO channel identification and equalization

10th IEEE International Conference on Electronics, Circuits and Systems, 2003. ICECS 2003. Proceedings of the 2003, 2004
Subspace (SS) methods are effective approaches for blind channel identification, for they achieve a good performance with relatively short data lengths and work well at low signal to noise ratio (SNR). However, they require the accurate knowledge of the channel order, which is difficult in a noisy environment.
Shaoping Chen, Tianren Yao
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A Novel HOS Approach for Blind Channel Equalization

IEEE Transactions on Wireless Communications, 2007
We present in this paper a new equalization method with over 8 dB advantage in the residual ISI compared to the classical results presented by Godard and Shalvi/Weinstein (kurtosis criteria). A systematic derivation is presented for obtaining the conditional expectation for f(x/z) that does not rely on the knowledge of the convolutional noise power nor
Monika Pinchas, Ben-Zion Bobrovsky
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On delay control in blind equalization for diversity channels

WCNC. 1999 IEEE Wireless Communications and Networking Conference (Cat. No.99TH8466), 2003
Existing methods for blind channel equalization that explicitly use channel diversity lead either to estimation of a single equalizer (without control of the transmission delay) like linear prediction or to estimation of all equalizers associated to every possible input/output delay.
Azzédine Touzni, Inbar Fijalkow
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Linear blind channel equalization for GSM systems

ICC '98. 1998 IEEE International Conference on Communications. Conference Record. Affiliated with SUPERCOMM'98 (Cat. No.98CH36220), 1998
We focus on the design of blind equalization receiver for the phase modulated GSM systems without relying on additional antennas. We derive an equivalent baseband PAM model for the GMSK signal used in GSM systems. More importantly, we are able to use a de-rotation scheme to create two sub-channels for each GMSK signal even though the GMSK signal has ...
Zhi Ding 0001, Ge Li
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Unbiased blind adaptive channel identification and equalization

IEEE Transactions on Signal Processing, 2000
A low-cost algorithm for adaptive estimation of unbiased linear predictors in additive noise with arbitrary autocorrelation is presented in the paper. It is shown that the minimization of the prediction error variance, subject to a specific quadratic constraint, permits the derivation of an asymptotically noise-free prediction coefficient.
David Gesbert, Pierre Duhamel
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Blind Channel Equalization Using CMA Algorithm

2009 International Conference on Advances in Recent Technologies in Communication and Computing, 2009
In Wireless communication systems, channel identification and equalization is one of the most challenging tasks because broadcast channels are often subject to frequency selective, time varying fading and there are several bandwidth limitations. Furthermore, each receiver channel has vastly different types of channel characteristics and signals to ...
Rambabu Tadisetti, P. Rajesh Kumar
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Blind equalization of fading channels

[1992] Conference Record of the Twenty-Sixth Asilomar Conference on Signals, Systems & Computers, 2003
Two blind equalization schemes using an antenna array are proposed for multipath fading channels. The methods exploit second-order statistics and spatial diversity to provide fast convergence rate and better performance in low SNRs. A special orthogonalization technique is used in conjunction with the Viterbi algorithm to achieve optimal sequence ...
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Adaptive blind equalization of time-varying channels

1997 IEEE International Conference on Acoustics, Speech, and Signal Processing, 2002
In mobile communications, often time-varying multipath is too rapid for a conventional adaptive algorithm to track. This motivates expansion of the time varying channel impulse response over a basis. Rather than estimating the time-invariant coefficients of this basis expansion, it is possible to equalize the channel output directly even when the input
Georgios B. Giannakis, Cihan Tepedelenlioglu, Hui Liu 0011   +2 more
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