时间选择性莱斯衰落信道条件下的OFDM系统  

An OFDM System in a Time-Selective Rician Fading Channel

作　　者：刘鹏[1] 张殿富[1] 

机构地区：[1]武警部队工程学院通信工程系,陕西西安710086

出　　处：《重庆邮电学院学报（自然科学版）》2003年第2期92-94,共3页Journal of Chongqing University of Posts and Telecommunications(Natural Sciences Edition)

摘　　要：给出了时间选择性莱斯无线衰落信道条件下一种 64 - QAM OFDM系统的理论论证 ,并给出了仿真结果。首先 ,对波形形成技术和 TCM编码使 AWGN (加性高斯噪声信道 )条件下的 OFDM系统性能得到改善进行了探讨 ;其次 ,讨论了 COFDM(编码 OFDM调制 )系统抗时间选择性莱斯衰落性能。In this paper, the theory and the simulation results of a 64-QAM OFDM system in a time-selective Rician fading channel are presented. First, the results dealing with the improvement of OFDM system performance by waveform shaping and TCM coding in an AWGN channel are reported. Then, coded OFDM system performance in a time-selective Rician fading channel is discussed, and the conclusion is drawn that selecting effective signal coding and waveform shaping method helps obtain ideal anti-fading effect in the system.

关 键 词：OFDM 时间选择性 莱斯衰落信道 波形形成技术 TCM编码 COFDM 正交频分复用 

分 类 号：TN911.4[电子电信—通信与信息系统]