本文選題：Massive + MIMO��； 參考：《浙江大學(xué)》2014年碩士論文

【摘要】：Massive MIMO (Multiple-Input-Multiple-Output)作為傳統(tǒng)(?)MIMO技術(shù)的延伸,可以大幅度提升吞吐率和能量效率,是未來(lái)無(wú)線通信的一個(gè)重要研究方向。Massive MIMO需要在基站采用大規(guī)模的陣列來(lái)服務(wù)有限的終端用戶,這使基站天線陣列的尺寸大幅度增大,安裝難度也相應(yīng)大幅增加。本文重點(diǎn)研究基站端陣列天線的空域相關(guān)和互耦對(duì)Massive MIMO系統(tǒng)性能的影響。在此基礎(chǔ)上,本文進(jìn)一步研究了基于雙極化天線的Massive MIMO系統(tǒng)。基于雙極化天線的Massive MIMO系統(tǒng)可以在不改變系統(tǒng)性能的情況下減小基站端的陣列占用面積。 本文首先在多天線理論技術(shù)的基礎(chǔ)上對(duì)Massive MIMO系統(tǒng)的基本特征進(jìn)行分析,包括時(shí)分復(fù)用雙工的上下行傳輸、導(dǎo)頻污染的起因及其影響、預(yù)編碼算法及其性能等。 其次,在陣列天線指數(shù)相關(guān)的條件下,本文分析了基于單極化天線陣列的Massive MIMO系統(tǒng)。理論推導(dǎo)證明此系統(tǒng)與傳統(tǒng)的無(wú)相關(guān)單極化Massive MIMO系統(tǒng)有相同的漸進(jìn)SIR (Signal to Interference Ratio)性能。對(duì)理論推導(dǎo)的結(jié)論我們進(jìn)行了仿真驗(yàn)證,證明了該結(jié)論的正確性。 在此基礎(chǔ)上,我們將相關(guān)和互耦與基站陣列結(jié)構(gòu)設(shè)計(jì)相結(jié)合,仿真對(duì)比了有無(wú)基站陣列面積限制兩種情況下的用戶速率。通過(guò)對(duì)基站端陣列面積受限情況的分析我們發(fā)現(xiàn),隨著天線數(shù)的上升,天線彼此之間的相關(guān)和耦合效應(yīng)不斷增強(qiáng),單位用戶速率趨于飽和。 最后,本文分析了旨在節(jié)省基站端陣列面積的基于雙極化天線的Massive MIMO系統(tǒng),分析并驗(yàn)證了其相對(duì)于傳統(tǒng)基于單極化天線的Massive MIMO系統(tǒng)的空間利用率的提升。
[Abstract]:Massive MIMO Multiple-Input-Multiple-Output (Massive MIMO), as an extension of traditional MIMO technology, can greatly improve throughput and energy efficiency. It is an important research direction of wireless communication in the future. Massive arrays are needed to serve limited end users in base stations. This greatly increases the size of base station antenna array and the difficulty of installation. This paper focuses on the effect of spatial correlation and mutual coupling of base station antenna array on the performance of Massive MIMO system. On this basis, the Massive MIMO system based on dual polarization antenna is further studied in this paper. The Massive MIMO system based on dual polarization antenna can reduce the array occupied area of base station without changing the system performance. In this paper, the basic characteristics of Massive MIMO system are analyzed on the basis of multi-antenna theory, including the uplink and downlink transmission of time division multiplexing (TDM), the cause and influence of pilot pollution, the precoding algorithm and its performance, etc. Secondly, under the condition of exponential correlation of array antenna, the Massive MIMO system based on single polarization antenna array is analyzed in this paper. The theoretical derivation proves that the system has the same asymptotic SIR signal to Interference Ratio) performance as the traditional uncorrelated unipolar Massive MIMO system. The conclusion of theoretical derivation is verified by simulation, and the correctness of the conclusion is proved. On this basis, we combine the correlation and mutual coupling with the base station array structure design, and compare the user rate with or without the base station array area limitation. By analyzing the limited area of the array at the base station, we find that with the increase of the number of antennas, the correlation and coupling effect between antennas are increasing, and the unit user rate tends to saturation. Finally, this paper analyzes the dual-polarization antenna based Massive MIMO system which aims to save the base station end array area, and analyzes and verifies the improvement of the space utilization ratio compared with the traditional Massive MIMO system based on single-polarization antenna.
【學(xué)位授予單位】：浙江大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2014
【分類號(hào)】：TN919.3

【參考文獻(xiàn)】

相關(guān)期刊論文 前1條

1 李敏;林敏;龔錚權(quán);;多天線系統(tǒng)的容量比較[J];軍事通信技術(shù);2007年01期

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本文編號(hào)：1943225