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降低OFDM系统峰均比的方法研究

Research on PAPR reduction in OFDM system
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摘要 OFDM系统存在峰均比(PAPR)比较大的问题。本文分析目前常用的降低PAPR的方法,在此基础上提出采用选择映射法和压缩扩张法结合的方法,并设计出该方法的结构图。通过仿真显示,该方法可以有效地降低OFDM系统的PAPR,同时保证一定的误码率(BER)。 There is a peak to average ratio (PAPR) in OFDM system. This paper analyzes the common PAPR reducing methods firstly, then we propose a method using selective mapping(SLM) combined with companding scheme and design the structure. The simulation shows that the method can reduce the OFDM system PAPR effectively and ensure the bit error rate (BER).
作者 沈爱国
出处 《电信工程技术与标准化》 2014年第1期74-78,共5页 Telecom Engineering Technics and Standardization
关键词 OFDM LTE PAPR BER OFDM LTE PAPR BER OFDM LTE PAPR BER
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