Abstract:A new soft-output algorithm of decoding is derived from the Bahl algorithm. The complex operations of estimating posterior probabilities and difference metric in the Bahl algorithm are paralleled and well formulated into a set of simple matrix operations which are fit to design efficient VLSI circuits. The probability of uk ≠ uk is quantized with nδ bits and is output together with uk branch code Xk. Thus, the algorithm not only increases the decoding speed, but also provides a soft-output algorithm for multi-level concatenated code.
刘光亮; 胡正名. 一种新的软输出译码算法[J]. 电子与信息学报, 1998, 20(4): 554-557 .
Liu Guangliang; Hu Zhengming. A NEW SOFT-OUTPUT ALGORITHM OF DECODING. , 1998, 20(4): 554-557 .