Abstract:The addition and taking the maximum (max) operations, as well as all the quantized data involved in the Max-Log-MAP Turbo decoding algorithm form a commutative max-sum semiring. In this paper performance degradation of Turbo decoding caused by shift operations using fixed-point data representation and unified precision bits is solved when the distributive law is properly applied to this semiring, with a bonus of considerable computational saving and precision bit reduction from 3 to 2 for all the pertinent var… Show more
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