摘要
降低正交频分复用(OFDM)系统峰均功率比(PAPR)的技术有信号预畸变技术、信号编码技术和信号扰码技术。以信号扰码技术中的部分传输序列(PTS)法作为重点研究对象,研究该方法在降低OFDM系统PAPR时的原理,并且在不同序列个数V、相位因子选择个数W以及子载波个数N条件下对PTS-OFDM系统的PAPR性能进行了仿真。仿真结果表明,增加V或W都有利于PTS-OFDM系统PAPR性能的提高。
Signal pre-distortion,signal encoding and signal scrambling are three classes of techniques to reduce the peak-to-average power ratio（PAPR） for orthogonal frequency division multiplexing（OFDM） systems.In this paper,the partial transmit sequences（PTS） method of the signal scrambling technique belongings is selected for the focus of study.The principles of the method in the reduction of PAPR for OFDM systems are investigated.And the performances of the PAPR reduction technique are simulated by a computer under conditions of the number of sub-blocks V,the number of phase factors W and the number of sub-carriers N for PTS-OFDM systems.Simulation results show that the performances of the PAPR reduction technique for PTS-OFDM systems can be enhanced by increase V or W or both.
出处
《北京石油化工学院学报》
2010年第1期27-30,共4页
Journal of Beijing Institute of Petrochemical Technology
关键词
正交频分复用
峰均功率比
部分传输序列
选择映射
orthogonal frequency division multiplexing（OFDM） peak-to-average power ratio（PAPR） partial transmit sequences（PTS） selected mapping（SLM）
