%0 Journal Article
%T Research on channel coding and decoding for DMR standard<br>基于DMR标准的信道编解码研究
%A LIU Er-xiao
%A LI Yu-bai
%A LI Huan
%A <br>刘二晓
%A 李玉柏
%A 李桓
%J 计算机应用研究
%D 2012
%I 
%X For better performance of DMR system, this paper focused on rate 3/4 trellis code and QR(quadratic residue) code in DMR standard. As for the rate 3/4 trellis code, it proposed two different decoding algorithms. One made full use of the characteristics of finite state machine,and the other refined the butterfly computation in viterbi decoding algorithm. It presented a new algorithm to decode QR code by computing the weight of its syndrome polynomial. Simulational results show that the two decoding methods for rate 3/4 trellis code have similar performance, but the first has less computational effort and can be implemented conveniently. Meanwhile, the new algorithm for QR decoding avoids solving the complicated error polynominal and has better performance.
%K DMR systems
%K rate 3/4 trellis code
%K viterbi decode
%K QR code
%K weight of syndrome polynominal<br>DMR系统
%K 3/4率网格码
%K 维特比译码
%K 二次剩余码
%K 伴随多项式的码重
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=A9D9BE08CDC44144BE8B5685705D3AED&aid=DD72437537278C171911F851ABE1568F&yid=99E9153A83D4CB11&vid=771469D9D58C34FF&iid=E158A972A605785F&sid=B67AA60AE93E3CE8&eid=D56713C22DA9FDE8&journal_id=1001-3695&journal_name=计算机应用研究&referenced_num=0&reference_num=10