| 多用户MIMO SDMA系统中的跨层设计 |
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| 引用本文： | 沈薇薇,刘召伟,王宗欣.多用户MIMO SDMA系统中的跨层设计[J].复旦学报(自然科学版),2009(4). |
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| 作者姓名： | 沈薇薇 刘召伟 王宗欣 |
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| 作者单位： | 复旦大学通信科学与工程系; |
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| 基金项目： | 国家自然科学基金资助项目(60572124) |
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| 摘 要： | 提出了一种联合物理层发送—接收优化和MAC多用户配置的下行多用户MIMO SDMA系统,同时考虑物理层的信道状态信息与MAC层的多路访问控制,实现联合优化.模拟结果表明,通过联合设计物理层和MAC层,不仅能够减少下行多用户SDMA系统中基站所要求的发射天线数,而且可以提高系统的误码性能.
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| 关 键 词： | 通信技术 跨层设计 多输入多输出 空分多址 多用户分集 |
Cross-Layer Design in Multiuser MIMO SDMA Systems |
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| SHEN Wei-wei,LIU Zhaowei,WANG Zong-xin.Cross-Layer Design in Multiuser MIMO SDMA Systems[J].Journal of Fudan University(Natural Science),2009(4). |
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| Authors: | SHEN Wei-wei LIU Zhaowei WANG Zong-xin |
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| Institution: | Department of Communication Science and Engineering;Fudan University;Shanghai 200433;China |
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| Abstract: | A downlink multiuser MIMO SDMA system is proposed,which combines Tx-Rx optimization in Physical Layer and multiuser diversity scheme in MAC Layer.In the proposed system,CSI in Physical Layer and multiple access control in MAC Layer are considered both to achieve joint optimization.Simulation shows that the cross-layer scheme not only decreases the required Tx antenna number in the downlink multiuser SDMA system,but also enhances its performance. |
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| Keywords: | communication technology cross-layer design MIMO SDMA multiuser diversity |
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