Direct blind multiuser detection without channel estimation and equalizer design
The blind equalization and multiuser detection problem for synchronous high-rate DS-CDMA systems in dispersive channels was considered. Using only the spreading code of the desired user and the property that the transmitted signals belong to the finite discrete-alphabet, the problem was formulated i...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2005-01-01
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| Series: | Tongxin xuebao |
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| Online Access: | http://www.joconline.com.cn/zh/article/74670325/ |
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| _version_ | 1841537217291354112 |
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| author | ZHANG Zhi-yong1 LING Yun2 |
| author_facet | ZHANG Zhi-yong1 LING Yun2 |
| author_sort | ZHANG Zhi-yong1 |
| collection | DOAJ |
| description | The blind equalization and multiuser detection problem for synchronous high-rate DS-CDMA systems in dispersive channels was considered. Using only the spreading code of the desired user and the property that the transmitted signals belong to the finite discrete-alphabet, the problem was formulated into a quadratic optimization with binary constraints. Then, an efficient ε-approximation algorithm was applied to find the solution of the quadratic optimization without channels estimation and designing the coefficients of the equalizer explicitly. This approach could reduce the performance degradation that was caused by channels estimation errors and have the superiority over the varying channels. Simulations demonstrate its superior performance to the subspace method and constant modulus algorithms. |
| format | Article |
| id | doaj-art-b8cf431ca95849a284dfec2ad77ff6a3 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2005-01-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-b8cf431ca95849a284dfec2ad77ff6a32025-01-14T08:42:47ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2005-01-01182374670325Direct blind multiuser detection without channel estimation and equalizer designZHANG Zhi-yong1LING Yun2The blind equalization and multiuser detection problem for synchronous high-rate DS-CDMA systems in dispersive channels was considered. Using only the spreading code of the desired user and the property that the transmitted signals belong to the finite discrete-alphabet, the problem was formulated into a quadratic optimization with binary constraints. Then, an efficient ε-approximation algorithm was applied to find the solution of the quadratic optimization without channels estimation and designing the coefficients of the equalizer explicitly. This approach could reduce the performance degradation that was caused by channels estimation errors and have the superiority over the varying channels. Simulations demonstrate its superior performance to the subspace method and constant modulus algorithms.http://www.joconline.com.cn/zh/article/74670325/blind equalizationε-approximation algorithmshigh-rate CDMAMIMO |
| spellingShingle | ZHANG Zhi-yong1 LING Yun2 Direct blind multiuser detection without channel estimation and equalizer design Tongxin xuebao blind equalization ε-approximation algorithms high-rate CDMA MIMO |
| title | Direct blind multiuser detection without channel estimation and equalizer design |
| title_full | Direct blind multiuser detection without channel estimation and equalizer design |
| title_fullStr | Direct blind multiuser detection without channel estimation and equalizer design |
| title_full_unstemmed | Direct blind multiuser detection without channel estimation and equalizer design |
| title_short | Direct blind multiuser detection without channel estimation and equalizer design |
| title_sort | direct blind multiuser detection without channel estimation and equalizer design |
| topic | blind equalization ε-approximation algorithms high-rate CDMA MIMO |
| url | http://www.joconline.com.cn/zh/article/74670325/ |
| work_keys_str_mv | AT zhangzhiyong1 directblindmultiuserdetectionwithoutchannelestimationandequalizerdesign AT lingyun2 directblindmultiuserdetectionwithoutchannelestimationandequalizerdesign |