基于4G关键技术的OFDM及SC-FDE研究  

Research of Key Technologies OFDM and SC/FDE in 4G

作　　者：刘翔宇[1] 郑建宏[1] 

机构地区：[1]重庆邮电大学移动通信工程研究中心,重庆400065

出　　处：《通信技术》2008年第6期185-186,189,共3页Communications Technology

基　　金：国家高技术研究发展计划(863计划)课题(2004AA001390)

摘　　要：在介绍了OFDM的原理基础之上,针对多载波系统PAPR大和对载波频率同步敏感的不足,引入介绍了一种基于OFDM系统的结构与性能都与其相似但却可克服其缺点的单载波频域均衡系统,并对OFDM和SC/FDE在4G中的应用进行讨论,最后利用simulink对OFDM和SC/FDE系统进行建模仿真和分析,以供深入研究学习。This paper first tells of principle of OFDM system. In order to solve the large PAPR and the synchronization sensitivity in multi-carrier system, a frequency-domain equalization for single-carrier system scheme is introduced in OFDM system, which is of similar structure and performance and overcomes the shortcomings .This paper then discusses the application of OFDM and SC/FDE in B3G/4G system. Finally, a wireless communication system with SC/FDE and OFDM is modeled and simulated in simulink.

关 键 词：正交频分复用 单载波频域均衡 超三代/第四代移动通信 

分 类 号：TN929.533[电子电信—通信与信息系统]