收稿日期: 2009-04-10
修回日期: 2009-06-04
网络出版日期: 2010-05-25
基金资助
国家自然科学基金资助项目(60532030)
Elimination of Carrier Frequency Offset in Uplink OFDMA System Based on TD-LMS Algorithm
Received date: 2009-04-10
Revised date: 2009-06-04
Online published: 2010-05-25
Supported by
国家自然科学基金资助项目(60532030)
关庆阳 赵洪林 郭庆 . 基于TD-LMS算法的OFDMA上行链路载波频率偏移消除[J]. 华南理工大学学报(自然科学版), 2010 , 38(5) : 6 -10 . DOI: 10.3969/j.issn.1000-565X.2010.05.002
A time-domain adaptive algorithm based on least mean square(TD-LMS) is proposed to eliminate the interference due to the carrier frequency offset(CFO) from different users in uplink OFDMA(Orthogonal Frequency Division Multiple Access) system.In this algorithm,the CFO in time domain is estimated and is adjusted with an estimator.Then,the residual CFO is eliminated with TD-LMS scheme in time domain.Simulated results indicate that,as compared with the algorithm based on least square,the proposed algorithm is effective in eliminating the CFO of users,with a gain of 3dB in the same simulation conditions.
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