IEEE802.11p下删余卷积编码译码方法的研究  

Research on puncturing convolutional code for IEEE 802.11p

作　　者：阮峥[1] 景为平[1] 

机构地区：[1]南通大学江苏省集成电路设计重点实验室,江苏南通226019

出　　处：《电子技术应用》2012年第8期116-118,125,共4页Application of Electronic Technique

摘　　要：应用于智能交通系统的无线接入协议IEEE802.11p,其物理层卷积编码的码率可通过对(2,1,7)卷积编码器的删余来实现。讨论了删余位置的图案和算法,分析了在删余位置插入不同哑元时维特比译码后误码率的统计特性。仿真的同时比较了固定哑元下不同码率所引入的误比特率。IEEE 802.11p, acts as wireless access protocol in the vehicular environment applied in the intelligent transportation systems, its convolutional code with three different code rate in the physical layer is achieved through （2,1,7） encoder. This paper proposed puncturing method that is omitting some encoded bits at specific position and inserting dummy metric in these places when utilize Viterbi decoder, discussed the selection on dummy metric, and finally compared BER results in inserting different dummy metrics and given code rate respectively.

关 键 词：智能交通 卷积编码 删余编码 哑元 

分 类 号：TP393.04[自动化与计算机技术—计算机应用技术]