Title :
Global convergence of fractionally spaced Godard equalizers
Author :
Li, Ye ; Ding, Zhi
Author_Institution :
Dept. of Electr. Eng., Maryland Univ., College Park, MD, USA
fDate :
31 Oct-2 Nov 1994
Abstract :
We present a convergence analysis of blind fractionally spaced equalizers (FSE) utilizing the Godard (1980) algorithm. The FSE can in fact be represented as a special vector equalizer which exploits the spectral diversity (cyclostationarity) of digital channel output and also the spatial diversity (antenna array) when available. It is shown that for channels satisfying a mild length and zero condition, the Godard FSE always converges to a global minimum point. Computer simulation demonstrates the performance improvement by the adaptive Godard FSE
Keywords :
adaptive equalisers; adaptive signal processing; convergence of numerical methods; diversity reception; interference suppression; intersymbol interference; multipath channels; Godard algorithm; adaptive Godard FSE; adaptive channel equalisation; antenna array; blind fractionally spaced equalizers; computer simulation; convergence analysis; cyclostationarity; digital channel output; fractionally spaced Godard equalizers; global convergence; intersymbol interference; linear channel distortion; mild length condition; multipath; performance improvement; spatial diversity; spectral diversity; vector equalizer; zero condition; Adaptive equalizers; Algorithm design and analysis; Bandwidth; Computer simulation; Convergence; Educational institutions; Finite impulse response filter; Interference elimination; Intersymbol interference; Quadrature amplitude modulation;
Conference_Titel :
Signals, Systems and Computers, 1994. 1994 Conference Record of the Twenty-Eighth Asilomar Conference on
Conference_Location :
Pacific Grove, CA
Print_ISBN :
0-8186-6405-3
DOI :
10.1109/ACSSC.1994.471526
