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一种基于空间预滤波的多点分布式协作传输模式

Multi-Point Distributed Coordinating Transmission Systems Based on Spatial Prefiltering
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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。 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 prefihering 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, greatly enhance system performance approaching to the ideal interference-free single cell user, and significantly improve spectral efficiency gain with increasing the number of antennas.
作者 肖尚辉 李路
机构地区 宜宾学院物理与电子工程学院 电子科技大学通信抗干扰重点实验室
出处 《电信科学》 北大核心 2010年第1期54-58,共5页 Telecommunications Science
基金 国家"863"高技术研究发展计划基金资助项目(No.2006AA01Z269 No.2007AA01Z299)
关键词 多输入多输出 多射频接入点 网络协作 空间预滤波 MIMO, multiple radio access point, network coordinating, spatial prefiltering
分类号 TN919.81 [电子电信—通信与信息系统] F276.3 [经济管理—企业管理]
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参考文献10

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二级参考文献6

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