DocumentCode :
291045
Title :
Fractionally spaced blind equalization and estimation of FIR channels
Author :
Tugnait, Jitendra K.
Author_Institution :
Dept. of Electr. Eng., Auburn Univ., AL, USA
Volume :
1
fYear :
1993
fDate :
23-26 May 1993
Firstpage :
428
Abstract :
The author considers the problem of blind estimation and equalization of digital communication FIR (finite impulse response) channels using fractionally spaced samples. The problem is cast in a mathematical framework of parameter estimation for a vector stationary process with a single input (information sequence) and multiple outputs, by using a time-series representation of a cyclostationary process. The channel parameters are estimated by nonlinear batch optimization of a quadratic cumulant matching criterion involving second and fourth order cumulants of the received data. A new algorithm is proposed for (asymptotically) globally convergent, linear estimation of the FIR channel parameters where the FIR model order is not necessarily known. A simulation example using QAM (quadrature amplitude modulation) signals is presented
Keywords :
convergence; digital communication; digital simulation; equalisers; parameter estimation; quadratic programming; quadrature amplitude modulation; telecommunication channels; time series; FIR channels; QAM; algorithm; blind equalization; blind estimation; channel parameter estimation; finite impulse response; fractionally spaced samples; nonlinear batch optimization; quadratic cumulant matching criterion; quadrature amplitude modulation; simulation; time-series representation; vector stationary process; Adaptive equalizers; Blind equalizers; Digital communication; Fading; Finite impulse response filter; Frequency; Intersymbol interference; Parameter estimation; Quadrature amplitude modulation; Telephony;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Communications, 1993. ICC '93 Geneva. Technical Program, Conference Record, IEEE International Conference on
Conference_Location :
Geneva
Print_ISBN :
0-7803-0950-2
Type :
conf
DOI :
10.1109/ICC.1993.397300
Filename :
397300
Link To Document :
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