一种降低OFDM系统PAPR联合算法的研究  

A research about joint improved algorithm reducing PAPR of OFDM systems

作　　者：任松育[1] 张捷[1] 王豪[1] 张昆[1] 

机构地区：[1]西北工业大学电子信息学院,陕西西安710129

出　　处：《电子设计工程》2013年第16期13-16,共4页Electronic Design Engineering

摘　　要：选择映射法(SLM)和概率类算法都可以降低OFDM(Orthogonal Frequency Division Multiplexing)系统的PAPR(Peak to Average Power Ratio),传统SLM算法自身较为复杂,但由于其优良的性能,弃之可惜。研究表明,SLM算法和限幅类算法在性能上具有一定的互补性。任何一个算法未必能达到抑制PAPR的理想效果,在深入研究了两个算法的基础上,将其优点联合起来,以达到降低OFDM系统PAPR的目的。最后对联合改进算法进行了分析与仿真。Select mapping method and probability class algorithm can reduce the PAPR of OFDM system,traditional SLM algorithm itself is extremely complex,but because of its excellent performance,wasteful to discard.Studies have shown that a certain degree of complementarity of the two algorithms in performance.Any single algorithm may not be able to achieve the desired effect suppress the PAPR,so in-depth study on the basis of the two types of algorithms,the two algorithms together,the algorithm has the advantage of the union of two,in order to achieve the purpose of reducing PAPR of OFDM system.In this paper,this improved algorithm for joint analysis and simulation,and verify the effectiveness and feasibility of the joint improved algorithm.

关 键 词：正交频分复用 峰值平均功率比 选择映射法 限幅 

分 类 号：TN919.4[电子电信—通信与信息系统]