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.
出处
《舰船科学技术》
北大核心
2008年第5期78-81,共4页
Ship Science and Technology
