Low-Complexity Iterative Channel Estimation for Turbo Receivers

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This letter discusses a receiver-side channel estimation algorithm well-suited to turbo equalizers for multiple-input multiple-output (MIMO) systems. The proposed technique is a Kalman-based channel estimator that runs on parallel single-input single-output (SISO) channels. Soft-decision-feedback interference cancellation is utilized to reduce the MIMO channel estimation problem into multiple SISO channel estimation problems. Unlike existing methods, however, the inherent correlation that exists among the output samples of the successive interference canceller is suppressed via careful puncturing of observation samples. The quality of soft decisions and channel estimates are also continuously monitored and incorporated in the Kalman filter update process.
Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
Issue Date
2012-05
Language
English
Article Type
Article
Keywords

FADING CHANNELS; EQUALIZATION; INFORMATION

Citation

IEEE TRANSACTIONS ON COMMUNICATIONS, v.60, no.5, pp.1182 - 1187

ISSN
0090-6778
DOI
10.1109/TCOMM.2012.032012.110085
URI
http://hdl.handle.net/10203/104237
Appears in Collection
EE-Journal Papers(저널논문)
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