一种减小峰均功率比的PTS算法优化技术研究  

Research on improved method of PTS algorithm on PAPR reduction

作　　者：刘明珠[1,2] 修德斌[2] 杨莘元[1] 

机构地区：[1]哈尔滨工程大学信息与通信工程学院 [2]哈尔滨理工大学,测控技术与通信工程学院,哈尔滨150080

出　　处：《哈尔滨商业大学学报（自然科学版）》2007年第5期548-551,共4页Journal of Harbin University of Commerce：Natural Sciences Edition

基　　金：黑龙江省教育厅科学研究基金(11513038).

摘　　要：研究了多载波通信系统峰均功率比(PAPR)抑制技术之一——部分传输序列(PTS)算法的优化技术.通过在传统多载波系统中加入PAPR门限比较判决模块,实现对多载波系统时域信号中较大PAPR值的抑制.传统PTS算法计算量大,不易实现.提出的比较判决优化技术将减小PTS数据处理的次数,使系统在PAPR抑制过程中的计算量明显减少.通过仿真证明,该优化算法在门限值合理设置时,可以使运算量减小近70%.该优化算法即使在子载波教较大的系统中,对系统的误码率性能有所优化,且不增加系统的带外辐射.Partial transmit sequence （PTS） algorithm is one of traditional techniques for the reduction of the peak-to-average power ratio （PAPR） in multi-carries communication system, an improved method of the algorithm had been proposed in this paper. A PAPR threshold decision unit was added in traditional multi-carries system to reduce the larger PAPR values for the time domain signals. Traditional PAPR algorithm needs complicated operations and large computations, so it is used scarcely by now. However, the improved method for Iris technique can lessen the number of Iris operations and it is superior to the traditional one in the aspect of calculation complexity. By simulation, it can be given that the improved method can cut down about 70% FIS operations on condition that a feasible PAPR threshold. Even though in a larger number of sub-carries system, proposed method has better bit error rate （BER） performance still can not make the increase and out-band power spectrum re-growth.

关 键 词：多载波调制系统 峰均功率比 部分传输序列 非线性功率放大器 

分 类 号：TN911.2[电子电信—通信与信息系统]