Title :
A Blind Time-Reversal Detector in the Presence of Channel Correlation
Author :
Zhong Zheng ; Lu Wei ; Hamalainen, Jyri ; Tirkkonen, Olav
Author_Institution :
Dept. of Commun. & Networking, Aalto Univ., Aalto, Finland
Abstract :
A blind target detector using the time reversal transmission is proposed in the presence of channel correlation. We calculate the exact moments of the test statistics involved. The derived moments are used to construct an accurate approximative Likelihood Ratio Test (LRT) based on multivariate Edgeworth expansion. Performance gain over an existing detector is observed in scenarios with channel correlation and relatively strong target signal.
Keywords :
correlation methods; object detection; statistical analysis; LRT; approximative likelihood ratio test; blind target detector; blind time-reversal detector; channel correlation; multivariate edgeworth expansion; performance gain; relatively strong target signal; test statistics; time reversal transmission; Approximation methods; Channel estimation; Correlation; Detectors; Joints; Multipath channels; Noise; Channel correlation; complex double Gaussian; detection; multivariate Edgeworth expansion; time reversal;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2013.2251880
