基于DMR协议的信道编译码研究  

Research on channel coding/decoding for DMR protocol

作　　者：窦建华[1] 凌小星 

机构地区：[1]合肥工业大学计算机与信息学院,安徽合肥230009

出　　处：《计算机工程与设计》2014年第2期420-424,共5页Computer Engineering and Design

摘　　要：为了降低DMR协议中信道译码复杂度,对QR(16,7,6)码和Golay(20,8,7)码进行了研究。对于QR(16,7,6)码,根据其特性,提出一种改进的捕错译码算法。该算法通过计算校正子重量,找出错误位置并实现纠错,有效的避免了复杂错误位置多项式的求解,使得QR(16,7,6)码的译码过程更加简洁。对于Golay(20,8,7)码,因其是一种特殊的二次剩余码,该算法也同样适用于Golay(20,8,7)码的译码。经在VC++环境下验证,改进的捕获译码算法可顺利实现QR(16,7,6)码和Golay(20,8,7)码的译码。In order to reduce the channel decoding complexity of DMR protocol, is proposed the （16, 7, 6） QR （quadratic resi due） code and the （20, 8, 7） Golay code is introduced in detail, and a new decoding algorithm. Generally, the decoding algo- rithm for OR code is solving the complicated error polynomial, this process is complexity and time-consuming. However, the new algorithm avoids it by computing the weight of syndrome. It can detect and correct error bit effectively. And the （20, 8, 7） Golay code is a particular quadratic residue code, after analyzed by Visual C＋＋, the new algorithm has better performance for both the （16, 7, 6）QR decoding and the （20, 8, 7）Golay decoding.

关 键 词：数字无线电 二次剩余码 格雷码 校正子 码重 

分 类 号：TP301.6[自动化与计算机技术—计算机系统结构]