DocumentCode
485418
Title
Joint estimation of channel response and carrier frequency offset for uplink MIMO OFDMA systems
Author
Jian Chen ; Xiang Zheng ; Yong Xiong ; Yan-liang Jin
Author_Institution
Sch. of Commun. & Inf. Eng., Shanghai Univ., Shanghai
fYear
2007
fDate
12-14 Dec. 2007
Firstpage
865
Lastpage
868
Abstract
An estimator based on expectation maximization (EM) method is presented to jointly estimate carrier frequency offset (CFO) and channel of every antenna of each user in the uplink MIMO OFDMA systems. The proposed method has a very low computational complexity by transforming a multidimensional maximization problem into some smaller one dimensional maximization problems. Simulation results show that the algorithm achieves good performance in estimation accuracy.
Keywords
MIMO communication; OFDM modulation; channel estimation; expectation-maximisation algorithm; frequency division multiple access; frequency estimation; CFO estimation; MIMO; OFDMA; carrier frequency offset; channel response estimation; expectation maximization method; multiple input multiple output system; orthogonal frequency division multiple access system; Frequency estimation; MIMO; Maximum-likelihood(ML); OFDMA; Uplink;
fLanguage
English
Publisher
iet
Conference_Titel
Wireless, Mobile and Sensor Networks, 2007. (CCWMSN07). IET Conference on
Conference_Location
Shanghai
ISSN
0537-9989
Print_ISBN
978-0-86341-836-5
Type
conf
Filename
4786340
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