降低OFDM系统峰均功率比的研究  

Research on Reducing PAPR in OFDM Systems

作　　者：段再超[1] 肖丽萍[1] 

机构地区：[1]燕山大学信息科学与工程学院,河北秦皇岛066004

出　　处：《无线电通信技术》2010年第1期19-21,共3页Radio Communications Technology

摘　　要：对载波干涉技术降低OFDM的峰均功率比方法进行改进。先对输入信号进行分组,使系统峰值功率得到明显降低,之后再对分组后的信号进行载波干涉。理论分析及仿真结果表明,提出的方法能使系统峰值功率有明显降低,进而达到了进一步的降低峰均功率比的目的。该方法算法简单、不产生失真,不用传送边带信息,易于与其他降低PAPR的技术相结合使用,具有较好的实用性。The method of reducing the peak-to-average power ratio （PAPR） with carrier-interferometry is improved in OFDM system. First we divide the input signal into several groups, which could reduce peak power significantly, and then use carrier-interferometry after grouping. The theoretical analysis and simulation results demonstrate that the scheme in the paper can reduce peak power significantly, and reduction of peak-to-average power ratio （PAPR） is also achieved further. The proposed method is simple, without distortion and transmission of side information, and it is convenient to be combined with other techniques and valuable to be applied with good feasibility.

关 键 词：正交频分复用(OFDM) 峰均功率比(PAPR) 载波干涉 分组 

分 类 号：TN914[电子电信—通信与信息系统]