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A Cholesky factorization based approach for blind FIR channel identification

journal contribution
posted on 2008-04-01, 00:00 authored by Jinho ChoiJinho Choi, C C Lim
For blind channel identification, various techniques, including transmitter-induced cyclostationarity based approaches, have been proposed in literature. To induce cyclostationarity at the transmitter, zero padding to every symbol packet can be considered. Some subspace methods are proposed for the channel estimation by exploiting the induced cyclostationarity. Due to zero padding, the covariance matrix of received signal vectors can have a special structure. Utilizing this structure, we can estimate channel impulse responses through factorization. In this correspondence, we propose a factorization based approach to estimate channel impulse responses. In general, the proposed factorization based approach can work with a small number of samples and becomes much more computationally efficient than the subspace method when the length of packets is long. © 2008 IEEE.

History

Journal

IEEE Transactions on Signal Processing

Volume

56

Issue

4

Pagination

1730 - 1735

Publisher

IEEE

Location

Piscataway, NJ

ISSN

1053-587X

Language

eng

Publication classification

C1.1 Refereed article in a scholarly journal

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