本文選題：Massive + MIMO�。� 參考：《浙江大學》2014年碩士論文

【摘要】：Massive MIMO (Multiple-Input-Multiple-Output)作為傳統(tǒng)(?)MIMO技術的延伸,可以大幅度提升吞吐率和能量效率,是未來無線通信的一個重要研究方向。Massive MIMO需要在基站采用大規(guī)模的陣列來服務有限的終端用戶,這使基站天線陣列的尺寸大幅度增大,安裝難度也相應大幅增加。本文重點研究基站端陣列天線的空域相關和互耦對Massive MIMO系統(tǒng)性能的影響。在此基礎上,本文進一步研究了基于雙極化天線的Massive MIMO系統(tǒng)�；陔p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的基礎上對Massive MIMO系統(tǒng)的基本特征進行分析,包括時分復用雙工的上下行傳輸、導頻污染的起因及其影響、預編碼算法及其性能等。 其次,在陣列天線指數(shù)相關的條件下,本文分析了基于單極化天線陣列的Massive MIMO系統(tǒng)。理論推導證明此系統(tǒng)與傳統(tǒng)的無相關單極化Massive MIMO系統(tǒng)有相同的漸進SIR (Signal to Interference Ratio)性能。對理論推導的結論我們進行了仿真驗證,證明了該結論的正確性。 在此基礎上,我們將相關和互耦與基站陣列結構設計相結合,仿真對比了有無基站陣列面積限制兩種情況下的用戶速率。通過對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和耦合效應不斷增強,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),分析并驗證了其相對于傳統(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.
【學位授予單位】：浙江大學
【學位級別】：碩士
【學位授予年份】：2014
【分類號】：TN919.3

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本文編號：1943225