PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM

Thamer M.J. Al-anbaky

doi:10.31026/j.eng.2007.04.04

Article Details

PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM

Authors:

Thamer M.J. Al-anbaky

Publisher:

University of Baghdad

Journal:

Journal of Engineering Vol.13 Issue 4, pp.1889-1900

Document Type:

Article

Publication Date:

1/2007

Document Language:

English

Document ID (Org No.):

2001380024

pISSN:

2520-3339

DOI:

10.31026/j.eng.2007.04.04

Abstract:

 In this paper possible improvements in the performance of adaptive Linear Equalizer (LE) and Decision Feed Back Equalizer (DFE) are reported. A modified Least Mean Square (LMS) algorithm incorporating a recursively adjusted adaptation step size based on rough estimate of the performance surface gradient square is proposed. The firstproposed algorithm was called Adjusted Step Size LMS (ASSLMS) which used single adjusted step size for all weight coefficients. The second proposed algorithm was called Distributed Step Size LMS algorithm (DSSLMS). This algorithm (i.e. DSSLMS) will distribute the resultant variable step size in an exponential form among all weights of theadaptive filter such that each weight coefficient has its own step size. These proposed algorithms through computer simulation results shows favorable performance than traditional LMS algorithm and another Variable Step Size LMS (called VSSLMS) algorithm in terms of fast convergence time, less miss-adjustment in steady state, and good tracking ability.

Article Details

PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM

Authors: Thamer M.J. Al-anbaky

Publisher: University of Baghdad

Journal: Journal of Engineering Vol.13 Issue 4, pp.1889-1900

Document Type: Article

Publication Date: 1/2007

Document Language: English

Document ID (Org No.): 2001380024

pISSN: 2520-3339

DOI: 10.31026/j.eng.2007.04.04

Issues

Authors:

Thamer M.J. Al-anbaky

Publisher:

University of Baghdad

Journal:

Journal of Engineering Vol.13 Issue 4, pp.1889-1900

Document Type:

Article

Publication Date:

1/2007

Document Language:

English

Document ID (Org No.):

2001380024

pISSN:

2520-3339

DOI:

10.31026/j.eng.2007.04.04