选择映射法降低OFDM系统的峰均比

PAPR reduction of OFDM system by SLM

正交频分复用(OFDM)系统的一个主要缺点是峰均功率比(PAPR)过高。选择映射法(SLM)是一种有效的降低OFDM系统的峰均功率比的方法。采用一种改进的选择映射法,把降低峰均功率比和信道编码相结合。仿真结果表明,不仅能够降低OFDM系统的峰均比,而且系统的误比特性能也得到提高。

One of the major drawbacks of the OFDM system is the high peak-to-average power ration （PAPR）. The selective mapping （SLM） is an effective scheme to reduce PAPR. A modified SLM technique which combines the PAPR reduction with the channel coding is proposed. The simulation results show that the new scheme can reduce the PAPR significantly while the BER performance is also enhanced.