| 一种基于空间预滤波的多点分布式协作传输模式 |
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| 引用本文： | 肖尚辉,李路.一种基于空间预滤波的多点分布式协作传输模式[J].电信科学,2010,26(1). |
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| 作者姓名： | 肖尚辉 李路 |
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| 作者单位： | 1. 宜宾学院物理与电子工程学院,宜宾,644007
2. 电子科技大学通信抗干扰重点实验室,成都,610054 |
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| 基金项目： | 国家“863”高技术研究发展计划基金资助项目(No.2006AA01Z269,No.2007AA01Z299) |
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| 摘 要： | 针对多天线无线MIMO系统性能往往严重受限于邻近小区其他用户干扰的问题,提出了一种源于分布在不同地理位置且与中心控制单元相连的多个射频接入点(或基站)通过网络协作向用户发送信息信号的下行传输结构,并给出了相应的信号传输模型,同时基于脏纸码和迫零联合处理策略研究了空间预滤波优化设计方法。通过性能分析可看出,该多点协作模式能有效地抑制邻近小区的同频干扰,获得的系统性能接近于理想单小区无干扰用户,与此同时,若增加收发天线数目则能明显改善系统频谱效率。
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| 关 键 词： | 多输入多输出 多射频接入点 网络协作 空间预滤波 |
Multi-Point Distributed Coordinating Transmission Systems Based on Spatial Prefiltering |
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| Xiao Shanghui,Li Lu.Multi-Point Distributed Coordinating Transmission Systems Based on Spatial Prefiltering[J].Telecommunications Science,2010,26(1). |
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| Authors: | Xiao Shanghui Li Lu |
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| Affiliation: | 1.School of Physics & Electronic Engineering;Yibin University;Yibin 644007;China;2.National Key Lab of Communication;University of Electronic Science & Technology of China;Chengdu 610054;China |
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| Abstract: | A sort of downlink system structure and its signal transmission model are proposed for multi-point network coordination transmitting information symbols to users through geographically dispersed multiple radio access points connected to a central processing unit. Optimal algorithms for the spatial prefiltering are investigated by simultaneously adopting the dirty paper coding and zero-forcing methods. Some numerical simulation results show that this approach can efficiently mitigate co-channel interference,... |
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| Keywords: | MIMO multiple radio access point network coordinating spatial prefiltering |
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