基于空域特征信息的分布式多天线系统协作接收技术研究

项目名称： 基于空域特征信息的分布式多天线系统协作接收技术研究

项目编号： No.61301150

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 张建康

作者单位： 郑州大学

项目金额： 27万元

中文摘要： 无线频谱资源的短缺与无线数据业务量增长之间的矛盾日益突出，提高无线通信系统的容量、频谱效率及业务承载能力已成为无线通信技术研究的重要目标。空域特征信息的整合利用，可以为无线通信带来新的分集增益。本项目拟以分布式多天线系统协作接收为背景，引入对空域特征信息的提取和利用，以空域的全新视角研究分布式多天线协作接收的各项关键技术。本项目具体拟从三大方面展开创新：1）以分布式多天线协作接收为背景，定义空域特征信息，基于空域特征信息对信号接收进行建模及分析，挖掘空域资源所蕴含的分集增益；2）设计特征提取方案，在接收信号中提取空域特征信息，并研究基于时-频-空多维特征信息的同步及信道估计算法；3）根据对空域特征信息的分析，提出比特级多用户软信息检测算法、自适应阈值控制的信息交互策略和信誉加权的信息融合方案，最大化利用分布式多天线分集增益的同时降低协作交互过程中的回路开销。

中文关键词： 多天线系统；协作通信；信道估计；信号检测；

英文摘要： Due to the increasing demands for higher system capacity and spectral efficiency, advanced signal processing techniques are needed which exploit new diversity gain by utilising the spatial characteristic information (SCI). The aim of this project is investigating cooperative receiving techniques in the distributed multi-input multi-output (MIMO) systems while focusing on extracting and exploiting the SCI, which opens up new horizons for designing novel cooperative receiving techniques in distributed MIMO systems from the spatial domain's point of view. The novelty of this project can be summarised as follows: Firstly, the SCI of distributed MIMO systems are defined and modelled, while its effects on the wireless signal reception are analysed in order to excavate the diversity gain involved by the SCI. Secondly, the SCI extraction or transfer functions are designed in order to recover the SCI from the received signals, based on which the multi-dimensional joint time-frequency-space synchronisation and estimation algorithms are designed. Finally, by extracting and utilising the SCI, we propose the multi-user detection algorithms based on bit-level soft information, the adaptive-threshold controlled anisotropic exchanging and the weighted reputational combining techniques, where the diversity gains of distributed M

英文关键词： Multiple antenna systems；cooperative communication；channel estimation；channel estimation; signal detection；