A semiblind receiver for iterative data detection and decoding of space-time coded data

Author

Souza, Richard Demo ; Garcia-Frias, Javier ; Haimovich, Alexander M.

Author_Institution

Commun. Res. Group, Fed. Univ. of Santa Catarina, Florianopolis, SC, Brazil

Volume

3

fYear

2004

fDate

21-25 March 2004

Firstpage

1626

Abstract

We present a semiblind iterative receiver for space-time coded data transmitted through unknown MIMO frequency selective quasistatic Rayleigh fading channels. The expectation maximization (EM) algorithm is used in the channel estimation process, while a BCJR algorithm for multiple antenna systems is used for both data detection, over the channel trellis, and decoding, over the space-time code trellis. Noise variance estimation is also performed by the receiver. Simulation results showing the diversity gain over MIMO flat fading channels are presented.

Keywords

MIMO systems; Rayleigh channels; antenna arrays; channel estimation; data communication; diversity reception; frequency selective surfaces; iterative decoding; optimisation; space-time codes; BCJR algorithm; MIMO frequency selective; channel estimation; data transmission; diversity gain; expectation maximization algorithm; iterative detection-decoding; multiple antenna systems; noise variance estimation; quasistatic Rayleigh flat fading channels; semiblind iterative receiver; space-time codes; Channel estimation; Fading; Frequency; Iterative algorithms; Iterative decoding; MIMO; Maximum likelihood decoding; Rayleigh channels; Receiving antennas; Transmitting antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications and Networking Conference, 2004. WCNC. 2004 IEEE

ISSN

1525-3511

Print_ISBN

0-7803-8344-3

Type

conf

DOI

10.1109/WCNC.2004.1311796

Filename

1311796