MIMO系统中的信道建模与天线设计研究
发布时间：2018-08-17 14:57
【摘要】：多输入多输出(MIMO)技术因其显著的提升信道容量的能力,受到了移动通信领域的广泛关注。与传统单通道收发不同,MIMO系统在收发端采用多通道进行通信,在富散射条件下,可以成倍的提高信道容量而不牺牲额外频谱资源或者功率。因此MIMO技术成为了移动通信进一步演进的关键。与此同时基于MIMO技术的通信系统设计对信道需要越来越细致的刻画。本文基于MIMO信道测试系统的研制,围绕MIMO系统中的信道建模与天线设计为主题,对信道测量系统,信道相关性模型进行了阐述。对信道的相关性做了初步的研究分析。在多天线设计中,结合对信道的分析,整理了天线设计要求,并提出多天线系统的归类与对应的设计方法。这两部分内容概述如下:基于滑动相关法,搭建了4×32通道的MIMO信道测试平台,在典型视距与非视距信道条件下进行了样本采集,并分析了MIMO信道的基本参数。对相关性模型中的Kronecker信道模型与Weichselberger模型进行了系统的阐述,并进行了仿真计算。结合测试与仿真结果,对室外的视距与非视距环境下的窄带相关性信道模型做了分析与总结。基于信道分析结果,总结了多天线设计要求。在电磁场的角度将多天线设计分为多模天线与组合式天线。对常用的天线形式,在场设计角度进行了相对系统的阐述。运用多模天线分析方法,包括应用于微带天线的腔模理论与金属结构的经典特征模理论,为多天线设计提供有力指导。基于分析结果,设计了两款多模天线,为常规的多天线系统设计提供了新的视角。
[Abstract]:Multi-input multiple-output (MIMO) technology has attracted wide attention in mobile communication field because of its remarkable ability to improve channel capacity. Different from the traditional single-channel transceiver MIMO system uses multi-channel communication in the transceiver. Under the condition of rich scattering the channel capacity can be increased exponentially without sacrificing the additional spectrum resources or power. Therefore, MIMO technology has become the key to the further evolution of mobile communication. At the same time, the design of communication system based on MIMO technology needs more and more detailed description of the channel. Based on the development of MIMO channel testing system, this paper describes the channel measurement system and channel correlation model around channel modeling and antenna design in MIMO system. The correlation of the channel is analyzed preliminarily. In the multi-antenna design, combining the analysis of the channel, the antenna design requirements are sorted out, and the classification and corresponding design method of the multi-antenna system are proposed. The two parts are summarized as follows: based on the sliding correlation method, a 4 脳 32 channel MIMO channel testing platform is built. Samples are collected under typical line-of-sight and non-line-of-sight channels, and the basic parameters of MIMO channel are analyzed. The Kronecker channel model and Weichselberger model in the correlation model are systematically described and simulated. Combined with the test and simulation results, the narrowband correlation channel model in outdoor and non-line-of-sight environments is analyzed and summarized. Based on the results of channel analysis, the design requirements of multiple antennas are summarized. In the view of electromagnetic field, the design of multi-antenna is divided into multi-mode antenna and combined antenna. For the common antenna form, the field design angle is described systematically. The multi-mode antenna analysis method, including the cavity mode theory applied to microstrip antenna and the classical characteristic mode theory of metal structure, provides a powerful guide for the design of multi-antenna. Based on the analysis results, two multimode antennas are designed, which provide a new perspective for the conventional multi-antenna system design.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN919.3
本文编号：2188009
[Abstract]:Multi-input multiple-output (MIMO) technology has attracted wide attention in mobile communication field because of its remarkable ability to improve channel capacity. Different from the traditional single-channel transceiver MIMO system uses multi-channel communication in the transceiver. Under the condition of rich scattering the channel capacity can be increased exponentially without sacrificing the additional spectrum resources or power. Therefore, MIMO technology has become the key to the further evolution of mobile communication. At the same time, the design of communication system based on MIMO technology needs more and more detailed description of the channel. Based on the development of MIMO channel testing system, this paper describes the channel measurement system and channel correlation model around channel modeling and antenna design in MIMO system. The correlation of the channel is analyzed preliminarily. In the multi-antenna design, combining the analysis of the channel, the antenna design requirements are sorted out, and the classification and corresponding design method of the multi-antenna system are proposed. The two parts are summarized as follows: based on the sliding correlation method, a 4 脳 32 channel MIMO channel testing platform is built. Samples are collected under typical line-of-sight and non-line-of-sight channels, and the basic parameters of MIMO channel are analyzed. The Kronecker channel model and Weichselberger model in the correlation model are systematically described and simulated. Combined with the test and simulation results, the narrowband correlation channel model in outdoor and non-line-of-sight environments is analyzed and summarized. Based on the results of channel analysis, the design requirements of multiple antennas are summarized. In the view of electromagnetic field, the design of multi-antenna is divided into multi-mode antenna and combined antenna. For the common antenna form, the field design angle is described systematically. The multi-mode antenna analysis method, including the cavity mode theory applied to microstrip antenna and the classical characteristic mode theory of metal structure, provides a powerful guide for the design of multi-antenna. Based on the analysis results, two multimode antennas are designed, which provide a new perspective for the conventional multi-antenna system design.
【学位授予单位】：电子科技大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TN919.3
【参考文献】
相关博士学位论文 前1条
1 李忻;新一代无线通信系统中的MIMO信道建模与多天线设计研究[D];电子科技大学;2005年
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