7/8自正交卷积码在宽带无线接入系统中的应用  

7/8 Self-Orthogonal Convolutional Coding for Broad Band Wirless Access Systems

作　　者：张森杰[1] 梅顺良[1] 

机构地区：[1]清华大学微波与数字通信国家重点实验室,北京100084

出　　处：《电讯技术》2004年第5期111-116,共6页Telecommunication Engineering

摘　　要：针对TDMA宽带无线接入系统零星误码的问题,设计了7/8自正交卷积码高效结构的编码器和反馈结构的译码器,7/8自正交卷积码的应用使得宽带无线接入系统的误码性能得到较大改善。针对解调器相位模糊和译码器失步的问题,提出了统一的解决方案,应用该方案可获得3dB的功率增益,而且可快速地获得译码器和编码器之间的同步。Aiming at odd bit error in TDMA broad band wirless access systems,this paper designs a high-efficient 7/8 self-orthogonal convolutional encoder and a decoder with feedback structure.Application of 7/8 self-orthogonal convolutional coding leads to greatly improved bit error performance of broad band wirless access systems. For phase illegibility and synchronization loss of decoder,this paper gives a universal solution that can obtain 3dB power gain and acquire synchronization between encoder and decoder quickly.

关 键 词：卷积码 宽带无线接人 宽带无线接入系统 译码器 编码器 相位模糊 误码性能 正交 同步 解决方案 

分 类 号：TN911[电子电信—通信与信息系统] TN915.6[电子电信—信息与通信工程]