Concatenated Trellis Coding and CPM for DS/SSMA Communications in Rayleigh Fading Channel  

作　　者：仰枫帆[1,2,3] 梁树雄 毕光国[1,2,3] 

机构地区：[1]南京航空航天大学电子工程系 [2]香港城市大学 [3]东南大学电子工程系

出　　处：《Journal of Southeast University(English Edition)》1999年第1期9-16,共8页东南大学学报（英文版）

摘　　要：In this paper, direct sequence spread spectrum multiple access (DS/SSMA) communication system employing serially concatenated trellis coded modulation (TCM) and continuous phase modulation (CPM) over flat Rayleigh fading channel are presented. The performance of this concatenated TCM/CPM DS/SSMA system is exploited by the theoretical analysis and numerical simulations. The results demonstrate that significant improvements in error probability of this DS/SSMA system over the system with single TCM or CPM of different modulation indices can be achieved under the same conditions.本文在衰落信道下将级联网格编码调制（ＴＣＭ）和连续相位调制（ＣＰＭ）应用于直接序列扩频多址（ＤＳ／ＳＳＭＡ）系统中．作者分别采用了理论分析和数值模拟两种方法研究了级联ＴＣＭ／ＣＰＭＤＳ／ＳＳＭＡ系统的性能，结果表明在相同的条件下采用级联ＴＣＭ／ＣＰＭ编码调制方式的ＤＳ／ＳＳＭＡ系统的错误概率远小于采用单一ＴＣＭ或ＣＰＭ的ＤＳ／ＳＳＭＡ系统的错误概率．

关 键 词：concatenated TCM/CPM direct sequence spread spectrum multiple access Rayleigh fading channel 

分 类 号：TN911[电子电信—通信与信息系统]