郑州大学学报（工学版）2012，Vol.33Issue(2)：5-9,5.DOI:10.3969/j.issn.1671-6833.2012.02.002
改进的基于循环平稳分析的OFDM关键参数估计方法
Improved Blind Estimation of OFDM Parameters Based on Cyclostationarity Analysis Method
摘要
Abstract
This paper proposes a new algorithm for blind estimation of parameters of OFDM signals under mul-tipath channel based on the autocorrelation properties and the cyclostationarity of OFDM signals. The autocorrelation of the OFDM signal is firstly applied to estimate the useful data period, then we introduce average idea when estimate symbol period based on the second-order cyclostationarity character of OFDM signals in mul-tipath channel, and get more accurate OFDM symbol period by getting the average value of the cyclic frequencies, so the proposed algorithm has better performance. The simulation results show that the blind parameters estimation accuracy rate of this algorithm can reach more than 90% with SNR equals to -2 dB, as well as almost 100% when SNR equals to 2 dB.关键词
多径信道/OFDM/参数盲估计/自相关/循环平稳Key words
multipath channel/ OFDM/ blind parameters estimation/ autocorrelation/ cyclostationarity分类
信息技术与安全科学引用本文复制引用
孙钢灿,党满满,徐雪菲..改进的基于循环平稳分析的OFDM关键参数估计方法[J].郑州大学学报（工学版）,2012,33(2):5-9,5.基金项目
国家自然科学基金资助项目(61172086) （61172086）
河南省博士后基金资助项目(2011年度). （2011年度）
