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Iterative Decoding of Serially Concatenated Space-Time Codes in WCDMA Systems with Short Frames
Bon-Jin KU Jong-Moon CHUNG Changeon KANG
IEICE TRANSACTIONS on Communications
Publication Date: 2004/02/01
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Wireless Communication Technology
serial concatenation, space-time code, WCDMA,
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In this letter, we investigate serially concatenated space-time codes (SC-STs) applying iterative decoding topologies in wideband code division multiple access (WCDMA) communication systems. In the decoding algorithm, an iterative (turbo) process is used, where a priori probability (APP) is exchanged between the symbol-by-symbol space-time (ST) decoder and the bit-by-bit convolutional decoder. The experimental results show that in a Rayleigh fading channel environment the serially concatenated interleaved space-time coding systems show significant error correction capability, and based on the applied system configurations, the nonrecursive ST code outperforms the recursive ST code.