Title :
Blind nonlinear equalization using 4th-order cumulant
Author :
Watanabe, Kazuteru ; Chen, Yen Wei ; Yamas, Katsumi
Author_Institution :
Graduate Sch. of Eng., Osaka Prefecture Univ., Japan
Abstract :
Equalization techniques which do not have knowledge of the input signals are said to be blind. The proposed method uses the 4th-order cumulant in order to smooth out Gaussian noise. Since the cost function with higher order statistics (HOS) has local minima, we also propose to use a simplex-GA to minimize the cost function. Finally, we use an MLSE equalizer to restore the input signals.
Keywords :
Gaussian noise; blind equalisers; digital radio; genetic algorithms; higher order statistics; maximum likelihood sequence estimation; minimisation; signal restoration; 4th-order cumulant; Gaussian noise; HOS; MLSE equalizer; blind equalization; cost function minimization; digital communication; higher order statistics; nonlinear equalization; simplex-GA; Additive noise; Blind equalizers; Cost function; Digital communication; Gaussian noise; Interference; Maximum likelihood estimation; Nonlinear systems; Parameter estimation; Signal restoration;
Conference_Titel :
SICE 2002. Proceedings of the 41st SICE Annual Conference
Print_ISBN :
0-7803-7631-5
DOI :
10.1109/SICE.2002.1195726
