【摘要】 本文研究了一种基于Hadamard变换降低OFDM系统PAPR的新算法,该算法扩展了传统系统的星座点,减小了频域符号间的相关性,其编解码算法简便,易于实现。文中分析了该算法的基本原理,同时仿真结果表明,采用该算法其PAPR可以比传统方法降低3-4dB;并且可以与其它方法联合使用,从而进一步降低PAPR。更多还原

【Abstract】 In this paper a new method for PAPR reduction in OFDM systems is considered. We use Hadamard transform to expand the constellation points which can reduce the correlation of the symbols in the frequency domain, The encoding arid decoding is simple and it also has a low computational complexity. The simulation give 3 -4 dB reduction than the conventional OFDM systems.更多还原