PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM
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 gra...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2007-12-01
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| Series: | Journal of Engineering |
| Online Access: | https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/3232 |
| _version_ | 1797267068501884928 |
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| author | Thamer M.J. Al-anbaky |
| author_facet | Thamer M.J. Al-anbaky |
| author_sort | Thamer M.J. Al-anbaky |
| collection | DOAJ |
| description |
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 first
proposed 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 the
adaptive 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.
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| first_indexed | 2024-03-07T15:37:55Z |
| format | Article |
| id | doaj.art-b6000a36ff4f440db170966e9e1abd8c |
| institution | Directory Open Access Journal |
| issn | 1726-4073 2520-3339 |
| language | English |
| last_indexed | 2024-04-25T01:10:42Z |
| publishDate | 2007-12-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Journal of Engineering |
| spelling | doaj.art-b6000a36ff4f440db170966e9e1abd8c2024-03-10T09:51:55ZengUniversity of BaghdadJournal of Engineering1726-40732520-33392007-12-01130410.31026/j.eng.2007.04.04PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHMThamer M.J. Al-anbaky 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 first proposed 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 the adaptive 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. https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/3232 |
| spellingShingle | Thamer M.J. Al-anbaky PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM Journal of Engineering |
| title | PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM |
| title_full | PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM |
| title_fullStr | PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM |
| title_full_unstemmed | PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM |
| title_short | PERFORMANCE IMPROVEMENTSOF ADAPTIVE FIR EQUALIZER USINGMODIEFED VERSION OF VSSLMS ALGORITHM |
| title_sort | performance improvementsof adaptive fir equalizer usingmodiefed version of vsslms algorithm |
| url | https://www.joe.uobaghdad.edu.iq/index.php/main/article/view/3232 |
| work_keys_str_mv | AT thamermjalanbaky performanceimprovementsofadaptivefirequalizerusingmodiefedversionofvsslmsalgorithm |