短波信道条件下OFDM系统通信效果研究  

Communication Effects of OFDM System under the condition of Short-wave Channel

作　　者：潘耀华[1] 陈正荣[1] 郭强[1] 王立武[1] 

机构地区：[1]重庆通信学院通信指挥系,重庆400035

出　　处：《中国电子商情（通信市场）》2009年第5期56-60,共5页

摘　　要：正交频分复用（OFDM）是一种多载波数字调制技术，它能有效克服信号传输中产生的多径干扰，提高频谱利用率。以Simulink为平台构建OFDM通信系统仿真模型，并在频偏和多径条件下进行仿真，分析仿真结果可以看到，频偏和多径对系统的传输效果都有严重影响，其中频偏对通信系统的影响更为严重。Orthogonal Frequency Division Multiplexing （OFDM） is a multi-carrier digital modulation technique that can effectively overcome the signal transmission generated multi-ath interference and increase the spectrum utilization. Simulink as a platform to build a simulation model of OFDM communication systems, and frequency offset and multipath conditions simulation, analysis of simulation results can be seen, frequency offset and multipath effects on the transmission system has a serious impact, in which the commun-cation frequency offset system even more serious.

关 键 词：正交频分复用 符号间干扰 信道间干扰 频偏 多径 

分 类 号：TN91[电子电信—通信与信息系统]