Soft output decoding algorithm for spacetime block codes over unknown time varying channels with intersymbol interference

Author

Somayajula, Sangeetha ; Buckley, Kevin ; Perry, Richard

Author_Institution

Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA

Volume

1

fYear

2003

fDate

9-12 Nov. 2003

Firstpage

1095

Abstract

In this paper we describe and evaluate a soft input soft output (SlSO) decoding algorithm for space time block codes (STBC´s) over unknown, time-varying intersymbol interference (ISI) channels. We consider a per-survivor processing (PSP) approach with Kalman filter tracking and forward-backward processing. We also provide a space-time coding example, which employs a serially concatenated recursive systematic code (RSC) and a STBC scheme, with interleaving, and a soft decision iterative (turbo) receiver for unknown time-varying ISI channels.

Keywords

Kalman filters; block codes; concatenated codes; interleaved codes; intersymbol interference; iterative decoding; space-time codes; time-varying channels; turbo codes; Kalman filter tracking; SlSO decoding algorithm; forward-backward processing; intersymbol interference; persurvivor processing; recursive systematic code; soft decision iterative receiver; soft input soft output; soft output decoding algorithm; spacetime block codes; time varying channels; time-varying ISI channels; Block codes; Concatenated codes; Convolutional codes; Fading; Finite impulse response filter; Gaussian channels; Intersymbol interference; Iterative decoding; Space time codes; Turbo codes;

fLanguage

English

Publisher

ieee

Conference_Titel

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on

Print_ISBN

0-7803-8104-1

Type

conf

DOI

10.1109/ACSSC.2003.1292094

Filename

1292094