Blind Channel Identifiability for Generic Linear Space-Time Block Codes
Ammar, N.
Ding, Z.
Dept. of Electr. & Comput. Eng., California Univ., Davis, CA;
This paper appears in: Signal Processing, IEEE Transactions on
Publication Date: Jan. 2007
Volume: 55,
Issue: 1
On page(s): 202-217
ISSN: 1053-587X
INSPEC Accession Number: 9261311
Digital Object Identifier: 10.1109/TSP.2006.882089
Current Version Published: 2006-12-19
Abstract
Linear space-time block codes (STBCs) have proven their effectiveness in performance improvement of wireless multiple-input multiple-output communication systems. Their successful decoding, however, requires reliable channel knowledge at the receiver. In this paper, we present a semiblind channel estimation method for linear STBC without the usual code orthogonality condition. We provide a set of identification conditions that are mostly verifiable a priori in terms of code parameters and antenna array configuration. We also present a simple channel estimation algorithm. Finally, we provide simulation results that illustrate the performance of the proposed scheme
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