A Practical Adaptive TuCM Scheme for Rayleigh Flat Fading Channels  

作　　者：伍守豪 宋文涛 

机构地区：[1]Dept. of Electronics Eng., Shanghai Jiaotong Univ.

出　　处：《Journal of Shanghai Jiaotong university(Science)》2004年第1期73-77,共5页上海交通大学学报（英文版）

基　　金：National Natural Science Foundation ofChina (60 0 72 0 2 8) ;High Technology Research and Developm entProgram (863 ) of China (2 0 0 1AA12 10 3 1)

摘　　要：A practical adaptive turbo coded modulation (TuCM) scheme was proposed and its adaptive method was described. With some hardware considerations, a suboptimal optimization algorithm that the number of fading regions is variable was put forward. Furthermore, the cutoff fade depth of power adaptation was modified to reduce the interruption probability. The results show that the proposed adaptive TuCM comes within 3 dB of Rayleigh fading channel capacity, and exhibits about 3 dB power gain relative to the conventional adaptive trellis-coded modulation (TCM), and is easy to realize by hardware.A practical adaptive turbo coded modulation (TuCM) scheme was proposed and its adaptive method was described. With some hardware considerations, a suboptimal optimization algorithm that the number of fading regions is variable was put forward. Furthermore, the cutoff fade depth of power adaptation was modified to reduce the interruption probability. The results show that the proposed adaptive TuCM comes within 3 dB of Rayleigh fading channel capacity, and exhibits about 3 dB power gain relative to the conventional adaptive trellis-coded modulation (TCM), and is easy to realize by hardware.

关 键 词：adaptive coded modulation turbo coded modulation (TuCM) spectral efficiency 

分 类 号：TN911.22[电子电信—通信与信息系统]