OQAM/OFDM系统基于迭代的辅助导频信道估计  

Iterative scatter pilot channel estimation in OQAM/OFDM

作　　者：薛伦生[1] 张凯[2] 陈航[1] 邱上飞 XUE Lunsheng 1, ZHANG Kai 2, CHEN Hang 1, QIU Shangfei 2(1. School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China;2. Air and Missile Defense College, Air Force Engineering University, Xi’an 710051, Chin)

机构地区：[1]西北工业大学航海学院,陕西西安710072 [2]空军工程大学防空反导学院,陕西西安710051

出　　处：《系统工程与电子技术》2018年第6期1358-1362,共5页Systems Engineering and Electronics

基　　金：国家自然科学基金(61671468)资助课题

摘　　要：针对基于交错正交调制的正交频分复用(offset quadrature amplitude modulation/orthogonal frequency division multiplexing,OQAM/OFDM)系统中信道估计问题,本文提出了一种基于迭代的离散导频信道估计方法。通过分析系统存在的固有干扰,指出传统离散导频信道估计方法性能较低的原因。通过减少辅助导频消除干扰的个数降低辅助导频能量,使用迭代的方法估计信道的性能。仿真结果表明,所提的消除两个干扰数据符号的迭代辅助导频方法在辅助导频能量与普通数据符号相同的同时能够得到更好的信道估计性能。To solve the channel estimation problems of offset quadrature amplitude modulation/orthogonal frequency division multiplexing（OQAM/OFDM）systems,this paper proposes an iterative scatter pilot channel estimation method.Through analysis of the intrinsic imagine interference,we point out the reason of low performance with the traditional scatter pilot channel estimation method.We decrease auxiliary pilot removing the data number which cause the interference to pilot,and use the iterative method to estimate the channel performance.The simulation results show that the proposed method has a better channel estimation performance when the auxiliary pilot power is the same as average data power.

关 键 词：正交频分复用 交错正交调制 信道估计 离散导频 

分 类 号：TN911[电子电信—通信与信息系统]