Decoding Algorithm of Unequal Error Protection Block Code Based on Tree Topology
Zhang Shu-jing · Journal of Tongji University · 2007
This paper presents a new decoding algorithm of unequal error protection(UEP) code,which is called tree topology.The algorithm divides the codeword into several groups by transforming generator matrix.These code groups form branch words of the tree and every level in the tree denotes an information bit.Then decoding rules are used to search for the maximum likelihood codeword in the tree topology.This algorithm can correctly decode all information bits with protection capability equal to or higher than the number of error bits in a codeword.Furthermore,this algorithm simplifies the operation and achieves quick decoding of UEP code.