發(fā)布時(shí)間：2018-08-17 14:57

【摘要】：多輸入多輸出(MIMO)技術(shù)因其顯著的提升信道容量的能力,受到了移動通信領(lǐng)域的廣泛關(guān)注。與傳統(tǒng)單通道收發(fā)不同,MIMO系統(tǒng)在收發(fā)端采用多通道進(jìn)行通信,在富散射條件下,可以成倍的提高信道容量而不犧牲額外頻譜資源或者功率。因此MIMO技術(shù)成為了移動通信進(jìn)一步演進(jìn)的關(guān)鍵。與此同時(shí)基于MIMO技術(shù)的通信系統(tǒng)設(shè)計(jì)對信道需要越來越細(xì)致的刻畫。本文基于MIMO信道測試系統(tǒng)的研制,圍繞MIMO系統(tǒng)中的信道建模與天線設(shè)計(jì)為主題,對信道測量系統(tǒng),信道相關(guān)性模型進(jìn)行了闡述。對信道的相關(guān)性做了初步的研究分析。在多天線設(shè)計(jì)中,結(jié)合對信道的分析,整理了天線設(shè)計(jì)要求,并提出多天線系統(tǒng)的歸類與對應(yīng)的設(shè)計(jì)方法。這兩部分內(nèi)容概述如下:基于滑動相關(guān)法,搭建了4×32通道的MIMO信道測試平臺,在典型視距與非視距信道條件下進(jìn)行了樣本采集,并分析了MIMO信道的基本參數(shù)。對相關(guān)性模型中的Kronecker信道模型與Weichselberger模型進(jìn)行了系統(tǒng)的闡述,并進(jìn)行了仿真計(jì)算。結(jié)合測試與仿真結(jié)果,對室外的視距與非視距環(huán)境下的窄帶相關(guān)性信道模型做了分析與總結(jié)�；谛诺婪治鼋Y(jié)果,總結(jié)了多天線設(shè)計(jì)要求。在電磁場的角度將多天線設(shè)計(jì)分為多模天線與組合式天線。對常用的天線形式,在場設(shè)計(jì)角度進(jìn)行了相對系統(tǒng)的闡述。運(yùn)用多模天線分析方法,包括應(yīng)用于微帶天線的腔模理論與金屬結(jié)構(gòu)的經(jīng)典特征模理論,為多天線設(shè)計(jì)提供有力指導(dǎo)。基于分析結(jié)果,設(shè)計(jì)了兩款多模天線,為常規(guī)的多天線系統(tǒng)設(shè)計(jì)提供了新的視角。
[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.
【學(xué)位授予單位】：電子科技大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2016
【分類號】：TN919.3

【參考文獻(xiàn)】

相關(guān)博士學(xué)位論文 前1條

1 李忻;新一代無線通信系統(tǒng)中的MIMO信道建模與多天線設(shè)計(jì)研究[D];電子科技大學(xué);2005年

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本文編號：2188009