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多输入多输出正交频分复用(M IMO-OFDM)系统已成为新一代高速通信系统研究中的热点,而系统所产生的高峰均功率比(PAPR)信号是限制M IMO-OFDM技术实用化的主要障碍。本文在分类的基础上,对目前主要采用的降低M IMO-OFDM系统PAPR的方法进行介绍,描述了其优缺点及部分改进方案。
M IMO-OFDM system has become a hot spot in the research of next-generation high-speed communication systems. The peak-to-average power ratio (PAPR) signal generated by the system is a limitation of practical application of M IMO-OFDM technology The main obstacle to change. On the basis of classification, this paper introduces the methods of reducing the PAPR of M IMO-OFDM system, and describes its advantages and disadvantages as well as some improvements.