DocumentCode :
3383202
Title :
Blind adaptation of decision feedback equalizers based on the constant modulus algorithm
Author :
Casas, Raul A. ; Ding, Zhi ; Kennedy, Rodney A. ; Johnson, C. Richard, Jr. ; Malamut, Roberto
Author_Institution :
Sch. of Electr. Eng., Cornell Univ., Ithaca, NY, USA
Volume :
1
fYear :
1995
fDate :
Oct. 30 1995-Nov. 1 1995
Firstpage :
698
Abstract :
The constant modulus algorithm (CMA) is a simple and effective blind equalization algorithm that is generally implemented on feedforward linear adaptive equalizers. In this paper, we study the use of CMA on a decision feedback equalizer (CMA-DFE) for blind channel equalization. We analyze the convergence behavior of this highly nonlinear adaptive system. We also find a class of channels for which the decision directed DFE algorithm (DD-DFE) will not converge to the global optimum when initialized at the origin. For some of these channels, the CMA-DFE does not suffer the same ill-convergence.
Keywords :
decision feedback equalisers; blind adaptation; blind equalization algorithm; constant modulus algorithm; convergence behavior; decision directed DFE algorithm; decision feedback equalizers; feedforward linear adaptive equalizers; global optimum; highly nonlinear adaptive system; Adaptive equalizers; Adaptive systems; Blind equalizers; Convergence; Decision feedback equalizers; Delay; Feedforward systems; Finite impulse response filter; Intersymbol interference; USA Councils;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers, 1995. 1995 Conference Record of the Twenty-Ninth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
ISSN :
1058-6393
Print_ISBN :
0-8186-7370-2
Type :
conf
DOI :
10.1109/ACSSC.1995.540640
Filename :
540640
Link To Document :
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