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Performance Analysis and Efficient Decoding Algorithm for Space-Time Turbo codes  

Shin Na na (NEX1 FUTURE Co.,Ltd., Electronic Warfare R&D LAb)
Lee Chang woo (School of Information, Communications and Electronics Engineering, The Catholic University of Korea)
Publication Information
The Journal of Korean Institute of Communications and Information Sciences / v.30, no.4C, 2005 , pp. 191-199 More about this Journal
Abstract
Space-time turbo codes have been studied extensively as a powerful and bandwidth efficient error correction code over the wireless communication environment. In this paper, the efficient algorithm for decoding space-time turbo codes is proposed. The proposed method reduces the computational complexity by approximating a prior information for a iterative decoder. The performance of space-time turbo codes is also analyzed by using the fixed point implementation and the efficient method for approximating the Log-MAP algorithm is proposed. It is shown that the BER performance of the proposed method is close to that of the Log-MAP algorithm.
Keywords
Space-time codes; turbo codes; fixed-point arithmetic;
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