ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity Environment
The zero attraction affine projection algorithm (ZA-APA) achieves better performance in terms of convergence rate and steady state error than standard APA when the system is sparse. It uses l1 norm penalty to exploit sparsity of the channel. The performance of ZA-APA depends on the value of zero att...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Polish Academy of Sciences
2020-12-01
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| Series: | International Journal of Electronics and Telecommunications |
| Subjects: | |
| Online Access: | https://journals.pan.pl/Content/117124/PDF/93_2210_RADHIKA_new.pdf |
| _version_ | 1811343597267582976 |
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| author | S. Radhika A. Chandrasekar S. Nirmalraj |
| author_facet | S. Radhika A. Chandrasekar S. Nirmalraj |
| author_sort | S. Radhika |
| collection | DOAJ |
| description | The zero attraction affine projection algorithm (ZA-APA) achieves better performance in terms of convergence rate and steady state error than standard APA when the system is sparse. It uses l1 norm penalty to exploit sparsity of the channel. The performance of ZA-APA depends on the value of zero attractor controller. Moreover a fixed attractor controller is not suitable for varying sparsity environment. This paper proposes an optimal adaptive zero attractor controller based on Mean Square Deviation (MSD) error to work in variable sparsity environment. Experiments were conducted to prove the suitability of the proposed algorithm for identification of unknown variable sparse system. |
| first_indexed | 2024-04-13T19:32:47Z |
| format | Article |
| id | doaj.art-e52283e533ca47edb33945e9adeca865 |
| institution | Directory Open Access Journal |
| issn | 2081-8491 2300-1933 |
| language | English |
| last_indexed | 2024-04-13T19:32:47Z |
| publishDate | 2020-12-01 |
| publisher | Polish Academy of Sciences |
| record_format | Article |
| series | International Journal of Electronics and Telecommunications |
| spelling | doaj.art-e52283e533ca47edb33945e9adeca8652022-12-22T02:33:09ZengPolish Academy of SciencesInternational Journal of Electronics and Telecommunications2081-84912300-19332020-12-01vol. 66No 4695700https://doi.org/10.24425/ijet.2020.134029ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity EnvironmentS. RadhikaA. ChandrasekarS. NirmalrajThe zero attraction affine projection algorithm (ZA-APA) achieves better performance in terms of convergence rate and steady state error than standard APA when the system is sparse. It uses l1 norm penalty to exploit sparsity of the channel. The performance of ZA-APA depends on the value of zero attractor controller. Moreover a fixed attractor controller is not suitable for varying sparsity environment. This paper proposes an optimal adaptive zero attractor controller based on Mean Square Deviation (MSD) error to work in variable sparsity environment. Experiments were conducted to prove the suitability of the proposed algorithm for identification of unknown variable sparse system.https://journals.pan.pl/Content/117124/PDF/93_2210_RADHIKA_new.pdfzero attraction apasparse channelconvergencesteady state mean square errorvariable zero attraction controller |
| spellingShingle | S. Radhika A. Chandrasekar S. Nirmalraj ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity Environment International Journal of Electronics and Telecommunications zero attraction apa sparse channel convergence steady state mean square error variable zero attraction controller |
| title | ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity Environment |
| title_full | ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity Environment |
| title_fullStr | ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity Environment |
| title_full_unstemmed | ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity Environment |
| title_short | ZA-APA with Adaptive Zero Attractor Controller for Variable Sparsity Environment |
| title_sort | za apa with adaptive zero attractor controller for variable sparsity environment |
| topic | zero attraction apa sparse channel convergence steady state mean square error variable zero attraction controller |
| url | https://journals.pan.pl/Content/117124/PDF/93_2210_RADHIKA_new.pdf |
| work_keys_str_mv | AT sradhika zaapawithadaptivezeroattractorcontrollerforvariablesparsityenvironment AT achandrasekar zaapawithadaptivezeroattractorcontrollerforvariablesparsityenvironment AT snirmalraj zaapawithadaptivezeroattractorcontrollerforvariablesparsityenvironment |