A high power efficiency method using orthogonal signal decomposition in high PAPR system  

作　　者：REN ZhiYuan LI YongZhao ZHANG HaiLin HAN Kun 

机构地区：[1]State Key Laboratory of Integrated Services Network,Xidian University [2]Xi'an Communication Institute

出　　处：《Science China(Information Sciences)》2013年第4期169-175,共7页中国科学（信息科学）（英文版）

基　　金：supported by 111 Project (Grant No. B08038);National Natural Science Foundation of China(Grant No. 61072069);Important National Science and Technology Specific Projects (Grant No. 2011ZX0300300-104,2012ZX03003012);State Key Laboratory of Integrated Services Network (Grant No. ISN090105);Fundamental Research Funds for the Central Universities

摘　　要：To solve the low-power-efficiency problem for high peak to average power ratio systems, such as OFDM, an orthogonal inhomogeneous signal decomposition approach is proposed in this paper. The novel method decomposes the signal into branch signals orthogonally, which can adapt to the change of saturate power of each branch power amplifiers. Furthermore, the novel method has the advantages of both high power efficiency of power amplifier and low PAPR of branch signals. Therefore, this is more suitable for practical application. The simulation results indicate that the proposed method can increase the power efficiency remarkably without reducing the BER performance in the receiver.To solve the low-power-efficiency problem for high peak to average power ratio systems, such as OFDM, an orthogonal inhomogeneous signal decomposition approach is proposed in this paper. The novel method decomposes the signal into branch signals orthogonally, which can adapt to the change of saturate power of each branch power amplifiers. Furthermore, the novel method has the advantages of both high power efficiency of power amplifier and low PAPR of branch signals. Therefore, this is more suitable for practical application. The simulation results indicate that the proposed method can increase the power efficiency remarkably without reducing the BER performance in the receiver.

关 键 词：green radio power amplifier orthogonal inhomogeneous signal decomposed power efficiency energy conservation 

分 类 号：TN911.7[电子电信—通信与信息系统] TN929.5[电子电信—信息与通信工程]