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Soft-input soft-output list-based decoding algorithm

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3 Author(s)
Martin, P.A. ; Electr. & Comput. Eng. Dept., Univ. of Canterbury, Christchurch, New Zealand ; Taylor, D.P. ; Fossorier, M.P.C.

This paper describes a new approach to list-based soft-input soft-output (SISO) decoding based on order-i reprocessing. Approximations to both the log-maximum a posteriori (MAP) and max-log-MAP algorithms are developed. Additional decoding steps are proposed to correct common types of errors remaining after iterative decoding. These steps can significantly improve performance at low bit-error rates in later iterations. The proposed algorithms offer a wide range of complexity versus performance tradeoffs, which are explored through Monte Carlo simulations of product code decodings. The algorithms improve performance over previous approaches.

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Communications, IEEE Transactions on  (Volume:52 ,  Issue: 2 )