Title :
Blind estimation of a complex channel impulse response
Author_Institution :
Dipartimento di Elettronica, Politecnico di Milano, Italy
Abstract :
Extends to complex channels and data an efficient technique for blind channel identification. The method, which is a variant of maximum likelihood estimation, approaches the Cramer-Rao bound for small (residual) distortion and large sample size, and is recommended as a final step of blind deconvolution. After an analysis for general probability density functions of input data, ´square-´ and ´round-shaped´ PDFs, and PSK constellations used in digital transmission systems are considered.
Keywords :
maximum likelihood estimation; phase shift keying; probability; telecommunication channels; transient response; Cramer-Rao bound; PSK constellations; blind channel identification; blind deconvolution; complex channel impulse response; digital transmission systems; large sample size; maximum likelihood estimation; probability density functions; round shaped PDF; square shaped PDF; Additive noise; Baseband; Convolution; Deconvolution; Matched filters; Maximum likelihood estimation; Phase shift keying; Radio frequency; Random variables; Viterbi algorithm;
Conference_Titel :
Higher-Order Statistics, 1993., IEEE Signal Processing Workshop on
Conference_Location :
South Lake Tahoe, CA, USA
Print_ISBN :
0-7803-1238-4
DOI :
10.1109/HOST.1993.264581
