A New Approximation to the Jacobian Logarithm Suitable for MAP Decoding in BICM-ID
A New Approximation to the Jacobian Logarithm Suitable for MAP Decoding in BICM-ID
摘要
In this paper, a new method to approximate the compensation term in the Jacobian logarithm used by the MAP decoder is proposed. Using the proposed approximation, the complex functions In（.） and exp（.） in the Exact-log-MAP algorithm can be estimated with high accuracy and lower computational complexity. The efficacy of the proposed approximation is investigated and demonstrated by applying it to iteratively decoded BICM （Bit Interleaved Coded Modulation）.
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