Title :
Bilinear methods for blind channel equalization: (no) local minimum issue
Author :
Pité, Eric ; Duhamel, Pierre
Author_Institution :
ENST, Paris, France
Abstract :
Bilinear methods for jointly estimating the channel coefficients and the symbols emitted through these channels are very appealing. However, they can be trapped by local minima. This paper provides: (i) a full characterization of the local minima, (ii) a simple criterion for checking whether the procedure has converged to the global minimum, (iii) a simple algorithm for obtaining this solution, with a proof of convergence
Keywords :
convergence of numerical methods; digital communication; equalisers; iterative methods; minimisation; bilinear methods; blind channel equalization; channel coefficients; convergence; global minimum; local minimum; Antenna arrays; Blind equalizers; Colored noise; Cost function; Iterative algorithms; Iterative methods; Maximum likelihood estimation; Receiving antennas; Signal processing; Statistics;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.681562
