On efficient use of pilot symbols for multi-path channel equalization of QAM signals

We study a classic problem in wireless data communications in which receivers generally rely on training pilots for equalization of multi-path dispersive channel distortions. Traditional equalizers often require a substantial number of pilot symbols for effective channel compensation. To conserve li...

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Bibliographic Details
Published in2013 IEEE International Conference on Communications (ICC) pp. 5553 - 5558
Main Authors Jacklin, Neil, Zhi Ding, Yong Li
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.06.2013
Subjects
Decoding
Equalizers
Linear programming
Noise
Parity check codes
Receivers
Training
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Summary:We study a classic problem in wireless data communications in which receivers generally rely on training pilots for equalization of multi-path dispersive channel distortions. Traditional equalizers often require a substantial number of pilot symbols for effective channel compensation. To conserve limited channel bandwidth, we investigate novel equalization algorithms that can make more efficient use of fewer pilot symbols. We present a linear programming algorithm that takes better advantage of the QAM constellation. We further exploit the information inherent in the LDPC forward error correction codes within the linear programming framework to improve the equalization performance and convergence properties.
ISSN:1550-3607
1938-1883
DOI:10.1109/ICC.2013.6655476