现代电子技术2016，Vol.39Issue(1)：1-5,5.DOI:10.16652/j.issn.1004-373x.2016.01.001
基于循环前缀的多普勒频移算法及其改进算法研究
Research on Doppler frequency shift algorithm based on cyclic prefix and its improved algorithm
摘要
Abstract
The spectrum resource which can be used in the field of wireless communication is limited. The orthogonal fre-quency division multiplexing(OFDM)is an avenue to improve the utilization of spectrum resource,so it is widely studied and used. Doppler frequency shift can destroy the orthogonality between the subcarriers of OFDM signal,which may cause the inter-carrier interference(ICI),and reduce the system performance greatly,so it′s important to estimate and compensate the Doppler frequency shift. An estimation algorithm of the Doppler frequency shift based on cyclic prefix is analyzed,and its simulation and performance analysis are conducted. An improvement scheme of the algorithm is proposed,simulated and compared with the al-gorithm before improvement in performance. The feasibility of the improvement scheme was verified.关键词
多普勒频移/OFDM/循环前缀/改进方案Key words
Doppler frequency shift/OFDM/cyclic prefix/improvement scheme分类
信息技术与安全科学引用本文复制引用
陈烈,郭庆,贾敏..基于循环前缀的多普勒频移算法及其改进算法研究[J].现代电子技术,2016,39(1):1-5,5.基金项目
国家自然科学基金(61201143):联合信道估计的宽带移动卫星多用户多载波自适应传输方法 （61201143）
