| 摘要 |
<p>The method begins by initializing a forward recursion probability function vector alpha 0, and a backward recursion probability function vector beta N. Then, transition probability matrices GAMMA (Rk) and GAMMA i(Rk) are determined according to each received symbol of the sequence RN_1. And then, values of alpha k, corresponding to the received Rk are determined according to GAMMA (Rk). At the same time of determining alpha k, a plurality of multiplacation on GAMMA (Rk) and GAMMA i(Rk) are accomplished in parallel. By making use of the results of the matrix multiplications, after receiving the complete symbol sequence RN_1, values of all of the backward recursion probability vector beta k, where k = 1, 2, ..., N-1, are determined in parallel, and the log likelihood ratio for every decoded bit dk, k = 1,2, ..., N, are also determined in parallel. The circuit performs successive decoding procedures in parallel using a set of regular matrix operations. <IMAGE></p> |
