Title :
The EM Algorithm for Channel Estimation and Tracking of MIMO-OFDM Systems
Author :
Rao, Zhihong ; Luo, Tianwen
Author_Institution :
No. 30 Inst., China Electron. Technol. Corp., Chengdu, China
Abstract :
In this paper, we do research about Expectation Maximization (EM) Algorithm for MIMO-OFDM systems (Multiple-Input Multiple-Output Orthogonal Frequency Division Multiplexing). The EM algorithm is analyzed and used to channel estimating and channel tracking. It is shown that EM is an efficient iterative algorithm which can adapt to the fading channel for MIMO-OFDM system.
Keywords :
MIMO communication; OFDM modulation; channel estimation; fading channels; iterative methods; optimisation; EM algorithm; MIMO-OFDM systems; channel estimation; channel tracking; expectation maximization algorithm; fading channel; iterative algorithm; multiple-input multiple-output orthogonal frequency division multiplexing; Algorithm design and analysis; Bit error rate; Channel estimation; Delay; OFDM; Receiving antennas; Signal processing algorithms; Cramer-Rao Low Bound (CRLB); EM algorithm; Least-Square (LS) algorithm; MIMO; OFDM;
Conference_Titel :
Instrumentation, Measurement, Computer, Communication and Control, 2011 First International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-0-7695-4519-6
DOI :
10.1109/IMCCC.2011.208
