Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise
We propose a robust iterative multiuser receiver for decoding convolutional coded code-division multiple access (CDMA) signals in both Gaussian and non-Gaussian channel noise. The receiver is derived from a modified maximum a-posteriori (MAP) algorithm called the maxlog-MAP algorithm for robustness...
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| Format: | Article |
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IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG
2007
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| Online Access: | http://shdl.mmu.edu.my/3042/ |
| _version_ | 1848790217817849856 |
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| author | KU, I. LEE, S. W. CHUAH, T. C. |
| author_facet | KU, I. LEE, S. W. CHUAH, T. C. |
| author_sort | KU, I. |
| building | MMU Institutional Repository |
| collection | Online Access |
| description | We propose a robust iterative multiuser receiver for decoding convolutional coded code-division multiple access (CDMA) signals in both Gaussian and non-Gaussian channel noise. The receiver is derived from a modified maximum a-posteriori (MAP) algorithm called the maxlog-MAP algorithm for robustness against erroneous channel variance estimation. Furthermore, the effect of destructive outliers arising from impulsive noise is mitigated in the proposed receiver by incorporating the robust Huber penalty function into the multiuser detector. The proposed receiver is shown to perform satisfactorily over Gaussian and non-Gaussian impulsive channels. In every iteration, cumulative improvement in the quality of the a-posteriori probabilities is also demonstrated. |
| first_indexed | 2025-11-14T18:09:07Z |
| format | Article |
| id | mmu-3042 |
| institution | Multimedia University |
| institution_category | Local University |
| last_indexed | 2025-11-14T18:09:07Z |
| publishDate | 2007 |
| publisher | IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | mmu-30422011-09-29T05:54:27Z http://shdl.mmu.edu.my/3042/ Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise KU, I. LEE, S. W. CHUAH, T. C. T Technology (General) QA75.5-76.95 Electronic computers. Computer science We propose a robust iterative multiuser receiver for decoding convolutional coded code-division multiple access (CDMA) signals in both Gaussian and non-Gaussian channel noise. The receiver is derived from a modified maximum a-posteriori (MAP) algorithm called the maxlog-MAP algorithm for robustness against erroneous channel variance estimation. Furthermore, the effect of destructive outliers arising from impulsive noise is mitigated in the proposed receiver by incorporating the robust Huber penalty function into the multiuser detector. The proposed receiver is shown to perform satisfactorily over Gaussian and non-Gaussian impulsive channels. In every iteration, cumulative improvement in the quality of the a-posteriori probabilities is also demonstrated. IEICE-INST ELECTRONICS INFORMATION COMMUNICATIONS ENG 2007-07 Article NonPeerReviewed KU, I. and LEE, S. W. and CHUAH, T. C. (2007) Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise. IEICE Transactions on Communications, E90-B (7). p. 1584. ISSN 0916-8516 http://dx.doi.org/10.1093/ietcom/e90-b.7.1584 doi:10.1093/ietcom/e90-b.7.1584 doi:10.1093/ietcom/e90-b.7.1584 |
| spellingShingle | T Technology (General) QA75.5-76.95 Electronic computers. Computer science KU, I. LEE, S. W. CHUAH, T. C. Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise |
| title | Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise |
| title_full | Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise |
| title_fullStr | Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise |
| title_full_unstemmed | Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise |
| title_short | Iterative Multiuser Detection/Decoding for Coded CDMA Systems in Non-Gaussian Noise |
| title_sort | iterative multiuser detection/decoding for coded cdma systems in non-gaussian noise |
| topic | T Technology (General) QA75.5-76.95 Electronic computers. Computer science |
| url | http://shdl.mmu.edu.my/3042/ http://shdl.mmu.edu.my/3042/ http://shdl.mmu.edu.my/3042/ |