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Journal Article LMMSE Channel Estimation with Soft Statistics for Turbo-MIMO Receivers
Cited 8 time in scopus Share share facebook twitter linkedin kakaostory
Authors
Woo Ram Shin, Seung Joon Lee, Dong Seung Kwon, Joon Hyuk Kang
Issue Date
2009-08
Citation
IEEE Communications Letters, v.13, no.8, pp.585-587
ISSN
1089-7798
Publisher
IEEE
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1109/LCOMM.2009.090831
Abstract
Channel estimation techniques for turbo multipleinput multiple-output receivers are addressed, which exploit a priori information to refine the poor performance of initial channel estimates solely using training symbols. We study linear minimum mean squared error channel estimation (LMMSE-CE) using second-order soft statistics to incorporate the degree of decoding reliability. Utilizing this additional information effectively minimizes the error propagation which the maximum likelihood based expectation maximization channel estimation (ML-CE) suffers. The LMMSE-CE provides a smaller mean square error of channel estimation and block error rate than the ML-CE. © 2009 IEEE.
KSP Keywords
Block Error Rate, Channel estimation(CE), Decoding reliability, Error propagation, Estimation technique, Linear minimum mean squared error, Minimum Mean Square Error(MMSE), additional information, expectation maximization(EM), maximum likelihood, mean square error(MSE)