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A Generalized Algorithm for Blind Channel Identification with Linear Redundant Precoders

EURASIP Journal on Advances in Signal Processing20062007:025672

Received: 25 December 2005

Accepted: 11 June 2006

Published: 11 October 2006


It is well known that redundant filter bank precoders can be used for blind identification as well as equalization of FIR channels. Several algorithms have been proposed in the literature exploiting trailing zeros in the transmitter. In this paper we propose a generalized algorithm of which the previous algorithms are special cases. By carefully choosing system parameters, we can jointly optimize the system performance and computational complexity. Both time domain and frequency domain approaches of channel identification algorithms are proposed. Simulation results show that the proposed algorithm outperforms the previous ones when the parameters are optimally chosen, especially in time-varying channel environments. A new concept of generalized signal richness for vector signals is introduced of which several properties are studied.


Computational ComplexityFrequency DomainGeneralize SignalSystem ParameterQuantum Information


Authors’ Affiliations

Department of Electrical Engineering, California Institute of Technology, Pasadena, USA


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© B. Su and P. P. Vaidyanathan 2007

This article is published under license to BioMed Central Ltd. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.