畸变SLM法降低OFDM系统峰均比研究  

Research of distorted-SLM scheme to reduce high PAPR of OFDM system

作　　者：赵旦峰[1] 陶磊岩[1] 张英 

机构地区：[1]哈尔滨工程大学信息与通信工程学院,黑龙江哈尔滨150001

出　　处：《舰船科学技术》2008年第5期78-81,共4页Ship Science and Technology

摘　　要：传统选择性映射法(SLM)是一种无失真降低OFDM系统峰均功率比的有效方法,但其不能完全避免OFDM系统高峰值的出现。提出一种畸变SLM算法,利用编码产生含有相同信息的多个序列,在SLM之后对高峰值信号进行畸变处理。该算法不需传送边带信息,可将系统峰均比控制在某一门限值以下,且系统误码率性能较好。仿真结果验证了该算法的优越性。Traditional SLM is a method to greatly reduce the high PAPR of OFDM system,but it can not avoid appearance of high PAPR completely. Distorted-SLM scheme is proposed,using coding method to produce many different sequences which contain the same information, after SLM, the high-PAPR signal is distorted. This novel scheme doesn＇t need to transmit any side information,in addition it can control the PA-PR bellow certain threshold and have good BER performance. Simulation results show the advantages of the novel scheme.

关 键 词：正交频分复用 峰均比 卷积码 选择性映射 

分 类 号：TN911.72[电子电信—通信与信息系统]