Deepen spectrum notch and reduce PAPR in OFDM systems via combining subcarriers precoding with tone reservation  

作　　者：ZHAO Cheng-lin LIU De-qiang SUN Xue-bin JIANG Ting 

机构地区：[1]School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China

出　　处：《The Journal of China Universities of Posts and Telecommunications》2011年第3期80-84,共5页中国邮电高校学报（英文版）

基　　金：supported by the National Science & Technology Specific Major Projects (2009ZX03006-006,2009ZX03006-009);the National Natural Science Foundation of China (60432040, 60972079)

摘　　要：In orthogonal frequency division multiplexing （OFDM） systems, spectrum notch can be generated to mitigate interference to other narrow-band services by turning off corresponding subcarriers. However, the inter-carrier interference may limit considerably the produced notch depth. Another problem in OFDM is the high peak-to-average power ratio （PAPR）. In this paper, a technique combining subcarriers precoding with tone reservation is proposed to deepen spectrum notch and simultaneously reduce peak-to-average power ratio. Simulation results show that this presented joint algorithm can produce satisfied results to solve these problems at the expense of a moderate loss in bit error rate （BER） performance.In orthogonal frequency division multiplexing （OFDM） systems, spectrum notch can be generated to mitigate interference to other narrow-band services by turning off corresponding subcarriers. However, the inter-carrier interference may limit considerably the produced notch depth. Another problem in OFDM is the high peak-to-average power ratio （PAPR）. In this paper, a technique combining subcarriers precoding with tone reservation is proposed to deepen spectrum notch and simultaneously reduce peak-to-average power ratio. Simulation results show that this presented joint algorithm can produce satisfied results to solve these problems at the expense of a moderate loss in bit error rate （BER） performance.

关 键 词：OFDM  spectrum notch  PAPP subcarriers precoding  tone reservation 

分 类 号：TN929.5[电子电信—通信与信息系统] TG385.2[电子电信—信息与通信工程]