一种基于SLM算法的峰平功率比减小方案

Peak-to-Average Power Ratio Reduction Scheme of an OFDM Signal Based on SLM Algorithm

SLM算法是一种无失真降低OFDM信号峰平功率比的方法,它是一种很有效的方法。但是,由于此算法需要发送边带信息给接收机,而接收机只有在正确接收边带信息的前提下,才能够正确的对接收信号进行解调,因此,边带信息处理是SLM算法实现的一个重要环节。本文基于SLM算法给出了一种降低OFDM信号峰平功率比的实现方案,此方案通过对边带信息的特殊处理,在不损失系统效率的前提下,可以有效的提高边带信息传输的可靠性,同时,也可以很好的降低OFDM信号的峰平功率比。

SLM algorithm is a method for the reduction of peak-to-average power ratio (PAPR) of OFDM signal without distortion and it is an effective algorithm. However, the side information needed to be sent to receiver when using this algorithm, and only is the side information received accurately, can the receiver demodulate the received signal correctly. Therefore, dealing with the side information is an important sector. In this paper, a new peak-to-average power ratio reduction scheme is presented This scheme can improve the reliability of the side information transmission through special tackling, and the efficiency of OFDM system is preserved At the same time, the PAPR of OFDM signal can be reduced greatly.