Turbo网格编码调制在无线信道下的性能分析  

Performance Analysis of Turbo Trellis Coded Modulation in the Wireless Channel

作　　者：陈雪红[1] 

机构地区：[1]南京邮电大学通信与信息学院,江苏南京210003

出　　处：《现代电子技术》2007年第19期14-16,共3页Modern Electronics Technique

摘　　要：基于Turbo码和网格编码调制的特点,介绍了TTCM(Turbo Trellis Coded Modulation)的基本结构及编译原理,结合3G中IMT2000标准的具体要求,提出一种TTCM方案,并在室内和车载信道环境下进行性能仿真,然后与标准中提出的1/3码率Turbo码性能比较,得出TTCM系统不仅能获得较好的传输质量,同时更能有效地提高频带利用率,是一种最佳的选择方案。This paper introduces the structure and the principle of encoding and decoding of TTCM （Turbo Trellis Coded Modulation） based on the characteristics of Turbo Codes and Trellis Coded Modulation （TCM）. An improved method for TTCM is presented combined with the standard of ITM2000 in 3G. We analyze the performance of TTCM in the indoor channel and the vehicular channel through simulation. The results show that TTCM is a better selected method with good transmitting quality and high spectral utility compared with 1/3 turbo.

关 键 词：TURBO码 TURBO网格编码调制 室内信道 车载信道 

分 类 号：TN911[电子电信—通信与信息系统]