近场效应空时信号设计关键技术研究

项目名称： 近场效应空时信号设计关键技术研究

项目编号： No.61271164

项目类型： 面上项目

立项/批准年度： 2013

项目学科： 无线电电子学、电信技术

项目作者： 邵士海

作者单位： 电子科技大学

项目金额： 75万元

中文摘要： 新一代移动通信系统的低功耗和泛在接入需求，驱动近距离多天线通信场景所占的比例越来越大，然而近距离信道表现出的近场效应尚未深刻理解和有效应用。项目研究信道近场效应下的空时信号设计及检测理论，解决信道近场效应下多天线空时信号高效传输的关键技术问题。 项目研究无线信道近场效应特征参数与多天线空时信号设计的内在关系，建立包含信道近场特征的接收信号数学模型。探索近场效应特定环境下的空时信号设计准则，突破球面波维度的空间自由度理论。研究多天线近场信道环境下，空时信号设计与传输性能之间的关系，建立发射信号最佳波形设计方法与最优化的信号检测机制。 近场效应下多天线空时信号处理技术的进步，将会揭示近场信道关键特征参数与空时信号设计准则互作用的深层机理；研究成果，对新一代移动通信网、宽带无线接入网、无线物联网等无线通信系统的设计具有现实指导意义。

中文关键词： 近距离通信；球面波；天线位置摆放；信道容量；波形设计

英文摘要： To meet the demand of low power consumption and ubiquitous access requirement for the next generation mobile communication systems, the multi-antenna techniques in the short-range scenarios have attracted significant attention. However, the near-field effects for the short-range scenarios have not been understood satisfactorily and applied in the actual system. This project aims to explore the theory of space-time signal design and detection, and solve the key technical problem for the short-range MIMO system. More specifically, it consists of the following three aspects: (1) analyze the relationship between the parameters introduced by near-field effects and space-time signal design for MIMO systems, and establish the mathematical model of received signal with near-field effects; (2) explore the space-time signal design metric with near-field effects , and obtain the degree of freedom for the spherical-wave model; (3) investigate the relationship between space-time signal design and transmission performance of the short-range MIMO system, and establish the method of transmit signal waveform optimization and the mechanism of optimal signal detection. The progress of signal processing for MIMO systems with near-field effects will reveal the interaction between the key characteristic parameters introduced by near-

英文关键词： Short-Range Communications；Spherical-Wave；Antenna Placement；Channel Capacity；Waveform Design