| Optimal Filtering Algorithm-Based Multiuser Detector for Fast Fading CDMA Systems |
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| 作者姓名： | 张玲 张贤达 |
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| 作者单位： | Department of Automation Tsinghua University，Department of Automation Tsinghua University，Beijing 100084 China，Beijing 100084 China |
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| 基金项目： | 清华大学智能技术与系统国家重点实验室开放性基金;国家自然科学基金 |
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| 摘 要： | A multiuser detector was developed for fast fading code-division multiple-access systems by representing the channels as a system with the multiplicative noise （SMN） model and then using the known optimal filtering algorithm for the SMN for multiuser detection （MUD）. This multiuser detector allows the channel response to be stochastic in one symbol duration, which can be regarded as an effective method of MUD for fast fading CDMA systems. Performance analyses show that the multiuser detector is theoretically valid for CDMA systems over fast fading channels. Simulations show that the multiuser detector performs better than the Kalman filter-based multiuser detector with a faster convergence rate and lower bit error rate.
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| 关 键 词： | 通信系统 CDMA 光纤通信 计算方法 |
| 收稿时间： | 2007-01-20 |
Optimal Filtering Algorithm-Based Multiuser Detector for Fast Fading CDMA Systems |
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| Ling Zhang, ,Xianda Zhang,
྾.Optimal Filtering Algorithm-Based Multiuser Detector for Fast Fading CDMA Systems[J].Tsinghua Science and Technology,2007,12(6):663-668. |
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| Authors: | Ling Zhang Xianda Zhang
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| Institution: | aDepartment of Automation, Tsinghua University, Beijing 100084, China |
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| Abstract: | A multiuser detector was developed for fast fading code-division multiple-access systems by rep- resenting the channels as a system with the multiplicative noise (SMN) model and then using the known op- timal filtering algorithm for the SMN for multiuser detection (MUD). This multiuser detector allows the channel response to be stochastic in one symbol duration, which can be regarded as an effective method of MUD for fast fading CDMA systems. Performance analyses show that the multiuser detector is theoretically valid for CDMA systems over fast fading channels. Simulations show that the multiuser detector performs better than the Kalman filter-based multiuser detector with a faster convergence rate and lower bit error rate. |
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| Keywords: | multiuser detection multiplicative noise optimal filtering code-division multiple-access fading channel |
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