一种基于4-QAM星座重构无边带降低PAPR的方法

摘要

In thispaper,a method for 4-QAM reconstructed constellation is proposed for PAPR reduction in OFDM systems.When this method is applied with PTS and SLM,which is abbreviated as R-PTS and R-SLM,the PAPR of the systems can be reduced without sending side information.%本文提出了一种基于4-正交幅度调制(4-quadrature amplitude modulation,4-QAM)的星座重构（Reconstructed Constellation）方法来降低正交频分复用(Orthogonal Frequency Division Multiplexing, OFDM)系统中的峰均功率比(Peak-to-Average Power Ratio, PAPR)。当新产生的R-4-QAM星座图与部分传输序列(Partial Transmit Sequence, PTS)和选择性映射(Selected Mapping, SLM)方法相结合，简称为R-PTS和R-SLM，使其能够在降低系统PAPR的同时不需要发送边带信息（Side information）。