A new adaptive equalizer for carrierless amplitude and phase (CAP) receivers

Author

Gao, J. ; Leung, Y.H.

Author_Institution

ATRI, Curtin Univ. of Technol., Bentley, WA, Australia

Volume

3

fYear

1999

fDate

36342

Firstpage

90

Abstract

In carrierless amplitude and phase (CAP) modulation systems, receivers with adaptive linear equalizers generally use an equalizer structure consisting of two parallel arms of fractionally-spaced, tapped-delay-line filters for channel equalization. In this paper, we proposed a new adaptive equalizer based on the existing structure. For infinite number of taps, both equalizers with optimum weights provide the same level of mean-square error (MSE) performance. In comparison with the existing equalizer using the standard least mean square (LMS) algorithm, the new equalizer with a modified LMS algorithm has less than half the misadjustment for the same convergence rate. Alternatively, for the same misadjustment, the weights of the new adaptive equalizer converge faster than the existing equalizer

Keywords

FIR filters; adaptive equalisers; delay lines; matched filters; mean square error methods; CAP receivers; adaptive linear equalizers; carrierless amplitude and phase receivers; channel equalization; convergence rate; equalizer structure; mean-square error; tapped-delay-line filters; Adaptive equalizers; Adaptive filters; Arm; Digital filters; Finite impulse response filter; Frequency; Least squares approximation; Matched filters; Sampling methods; Transmitters;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on

Conference_Location

Orlando, FL

Print_ISBN

0-7803-5471-0

Type

conf

DOI

10.1109/ISCAS.1999.778792

Filename

778792