OFDM系统采用自适应技术结合限幅降低PAPR的研究  

Research on Reducing the PAPR of OFDM System with the Union Technique of Adaptive and Clipping

作　　者：高建中[1] 孟立凡[1] 史万莉[1] 

机构地区：[1]中北大学国家重点实验室,太原030051

出　　处：《空间电子技术》2010年第2期28-31,85,共5页Space Electronic Technology

摘　　要：针对OFDM系统峰均比PAPR(Peak-to-Average Power Ration)较大的问题,文章提出一种新的OFDM系统降低PAPR的方案,即自适应技术结合限幅Clipping。文章给出的计算机仿真结果表明,OFDM系统采用自适应技术结合Clipping进一步降低PAPR的同时又改善系统的BER性能,这就在降低PAPR和改善系统性能之间自动实现折衷。该方案实现起来简单且增加通信系统的智能化,故具有实用价值。Focused on the problem that OFDM system has a larger PAPR, a new scheme proposed in this paper is the union technique of adaptive and clipping, which can reduce PAPR. The simulation results confirm that the proposed scheme can not only reduce PAPR, but also improve the BER performance of IFDM system, which enables effective tradeoff between reduction on PAPR and performance of OFDM system automatically. The proposed scheme is valuable due to its implement is simpler and can enhance the intelligence of the OFDM system.

关 键 词：OFDM PAPR 自适应技术 限幅 

分 类 号：TN929.5[电子电信—通信与信息系统]