一种基于时分复用机制的高效卷积译码架构  

A New Decoding Structure of Multi-channel Convolutional Code

作　　者：卢欧欣 Lu Ou-xin(Southwest China Electronic Technology Institute,Sichuan Chengdu 610036)

机构地区：[1]中国西南电子技术研究所,四川成都610036

出　　处：《电子质量》2022年第5期11-14,共4页Electronics Quality

摘　　要：该文提出了一种基于轮询调用方式的多通道卷积译码方法,对传统译码器结构进行了改进,对各通道接收数据进行缓存,采用时分复用的方式轮询调用同一个卷积码译码器进行译码。并对该译码器架构带来的译码前数据分割、译码后数据拼接,以及译码器调度问题行了理论分析和仿真,提出了有效解决方案。该译码器架构能够大大减少对硬件资源的占用率,解决实际工程项目中资源有限条件下对通道数量的要求高的难题。A new decoding structure of multi-channel convolutional code,based on time-division utilization of a single decoding core,is proposed to decode convolutional code through Viterbi algorithm at a comparatively low expense of hardware resource.In the structure,data from each channel is stored in a cache area at first,then be processed by the decoding core according to a polling strategy implemented by a control unit.The key techniques corresponding to the structure such as pre-decode data partition,decoded data splicing,and control strategy,are analyzed and simulated to draw a conclusion.The structure saves implementation cost considerably,and resolves the conflicts between limited resource and application need.

关 键 词：卷积码 多通道译码 VITERBI算法 资源节省 

分 类 号：TN911.22[电子电信—通信与信息系统] TN764[电子电信—信息与通信工程]