Iterative Em-Based Channel Estimation for Stbc-Ofdm
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Özbek, Berna
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Abstract
In this paper, an iterative EM based channel estimation algorithm is studied for STBC-OFDM systems. Compared to the time domain EM based channel estimation algorithm which needs matrix inversion, a frequency domain EM based channel estimation algorithm is proposed by estimating the channel coefficients for each subcarrier. The proposed channel estimation algorithm decreased the complexity without sacrificing the performance. The time domain and proposed frequency domain EM based channel estimation algorithms are compared in terms of bit error rate (BER), mean square error (MSE) and the number of iterations used in the EM algorithm.
Description
IEEE Wireless Communications and Networking Conference, WCNC 2009; Budapest; Hungary; 5 April 2009 through 8 April 2009
Keywords
Channel estimation, EM algorithms, Channel coefficient, Frequency domains, Time domain, Frequency domains, Channel estimation, Channel coefficient, EM algorithms, Time domain
Fields of Science
0202 electrical engineering, electronic engineering, information engineering, 02 engineering and technology
Citation
Baştürk, İ., and Öztürk, B. (2009). Iterative EM-based channel estimation for STBC-OFDM. Paper presented at the IEEE Wireless Communications and Networking Conference, WCNC 2009. doi:10.1109/WCNC.2009.4917765
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