Efficient Reliability-based Soft Decision Decoding Algorithm over Markov Modulated Channel
نویسندگان
چکیده
We discuss soft-decision decoding which achieves nearmaximum likelihood decoding (MLD) of binary block codes over a Markov modulated channel. In this paper, a new soft-decision decoding algorithm using a generalized Expectation Maximization (EM) algorithm is proposed. Each iteration step of the proposed decoding algorithm can be regarded as performing MLD over an additive white Gaussian noise (AWGN) channel, so the proposed decoding algorithm can employ most of conventional efficient methods devised for the AWGN channel. The simulation results show that the proposed decoding algorithm achieves almost the same performance as that of MLD which needs exhaustive search of codewords.
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