A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise
A nonlinear M-estimation approach is proposed to solve the multiuser detection problem in asynchronous code-division multiple-access (CDMA) systems where the ambient noise is impulsive and the delays are not known. We treat the unknown delays as nuisance parameters and the transmitted symbols as par...
| Main Authors: | , , , |
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| Format: | Journal Article |
| Published: |
IEEE Signal Processing Society
2007
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| Online Access: | http://hdl.handle.net/20.500.11937/39931 |
| _version_ | 1848755728865558528 |
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| author | Pham, DucSon Zoubir, A. Brcic, Ramon Leung, Yee-Hong |
| author_facet | Pham, DucSon Zoubir, A. Brcic, Ramon Leung, Yee-Hong |
| author_sort | Pham, DucSon |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | A nonlinear M-estimation approach is proposed to solve the multiuser detection problem in asynchronous code-division multiple-access (CDMA) systems where the ambient noise is impulsive and the delays are not known. We treat the unknown delays as nuisance parameters and the transmitted symbols as parameters of interest. We also analyze the asymptotic performance of the proposed estimator and propose suboptimal but computationally efficient procedures for solving the nonlinear optimization function. Simulation results show considerable improvements over the conventional approaches. |
| first_indexed | 2025-11-14T09:00:55Z |
| format | Journal Article |
| id | curtin-20.500.11937-39931 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T09:00:55Z |
| publishDate | 2007 |
| publisher | IEEE Signal Processing Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-399312017-09-13T15:55:52Z A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise Pham, DucSon Zoubir, A. Brcic, Ramon Leung, Yee-Hong A nonlinear M-estimation approach is proposed to solve the multiuser detection problem in asynchronous code-division multiple-access (CDMA) systems where the ambient noise is impulsive and the delays are not known. We treat the unknown delays as nuisance parameters and the transmitted symbols as parameters of interest. We also analyze the asymptotic performance of the proposed estimator and propose suboptimal but computationally efficient procedures for solving the nonlinear optimization function. Simulation results show considerable improvements over the conventional approaches. 2007 Journal Article http://hdl.handle.net/20.500.11937/39931 10.1109/TSP.2006.889471 IEEE Signal Processing Society fulltext |
| spellingShingle | Pham, DucSon Zoubir, A. Brcic, Ramon Leung, Yee-Hong A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise |
| title | A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise |
| title_full | A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise |
| title_fullStr | A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise |
| title_full_unstemmed | A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise |
| title_short | A nonlinear M-estimation approach to robust asynchronous multiuser detection in Non-gaussian noise |
| title_sort | nonlinear m-estimation approach to robust asynchronous multiuser detection in non-gaussian noise |
| url | http://hdl.handle.net/20.500.11937/39931 |