基于Weichselberger模型的3D MIMO信道建模研究
發(fā)布時(shí)間：2018-07-24 21:56
【摘要】：3D MIMO(Three Dimension Multiple Input Multiple Output)技術(shù)是下一代通信系統(tǒng)(5G)關(guān)鍵的技術(shù)之一。為了更好地評(píng)估3D MIMO通信系統(tǒng)的性能,需要建立一種準(zhǔn)確的3D MIMO信道模型。在現(xiàn)有的3D MIMO信道模型中,3D Kronecker模型由于其簡(jiǎn)單性而得到廣泛應(yīng)用。但3D Kronecker模型假設(shè)收發(fā)兩端是不相關(guān)的,與實(shí)際信道特性不符。為解決該問題,本文在WINNER II中2D信道模型的基礎(chǔ)上引入仰角維度,建立3D MIMO信道模型,并推導(dǎo)收發(fā)兩端的相關(guān)矩陣,通過分解收發(fā)兩端相關(guān)矩陣構(gòu)建3D Weichselberger模型。本文著重分析六種典型場(chǎng)景下3D Weichselberger模型的空間耦合矩陣,并通過理論推導(dǎo)分析各種場(chǎng)景下的3D MIMO信道特征,同時(shí)推導(dǎo)出3D Weichselberger模型的互信息上限的表達(dá)式。仿真結(jié)果顯示,相對(duì)于3D Kronecker模型,3D Weichselberger模型能更準(zhǔn)確地描述3D信道的傳播特征。
[Abstract]:3D MIMO (Three Dimension Multiple Input Multiple Output) is one of the key technologies in the next generation communication system (5 G). In order to better evaluate the performance of 3D MIMO communication system, it is necessary to establish an accurate 3D MIMO channel model. Among the existing 3D MIMO channel models, the 3D Kronecker model is widely used because of its simplicity. However, the 3D Kronecker model assumes that the two ends of the transceiver are irrelevant, which does not correspond to the actual channel characteristics. In order to solve this problem, based on 2D channel model in WINNER II, the elevation dimension is introduced, the 3D MIMO channel model is established, and the correlation matrix between the two ends of the transceiver is derived, and the 3D Weichselberger model is constructed by decomposing the correlation matrix between the two ends of the transceiver and transceiver. In this paper, the spatial coupling matrix of 3D Weichselberger model under six typical scenarios is analyzed, and the characteristics of 3D MIMO channel under various scenarios are analyzed theoretically. At the same time, the expression of upper limit of mutual information of 3D Weichselberger model is derived. Simulation results show that compared with 3D Kronecker model, 3D Weichselberger model can describe the propagation characteristics of 3D channel more accurately.
【作者單位】： 南京郵電大學(xué)通信與信息工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(61471200)
【分類號(hào)】：TN929.5
本文編號(hào)：2142776
[Abstract]:3D MIMO (Three Dimension Multiple Input Multiple Output) is one of the key technologies in the next generation communication system (5 G). In order to better evaluate the performance of 3D MIMO communication system, it is necessary to establish an accurate 3D MIMO channel model. Among the existing 3D MIMO channel models, the 3D Kronecker model is widely used because of its simplicity. However, the 3D Kronecker model assumes that the two ends of the transceiver are irrelevant, which does not correspond to the actual channel characteristics. In order to solve this problem, based on 2D channel model in WINNER II, the elevation dimension is introduced, the 3D MIMO channel model is established, and the correlation matrix between the two ends of the transceiver is derived, and the 3D Weichselberger model is constructed by decomposing the correlation matrix between the two ends of the transceiver and transceiver. In this paper, the spatial coupling matrix of 3D Weichselberger model under six typical scenarios is analyzed, and the characteristics of 3D MIMO channel under various scenarios are analyzed theoretically. At the same time, the expression of upper limit of mutual information of 3D Weichselberger model is derived. Simulation results show that compared with 3D Kronecker model, 3D Weichselberger model can describe the propagation characteristics of 3D channel more accurately.
【作者單位】： 南京郵電大學(xué)通信與信息工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金(61471200)
【分類號(hào)】：TN929.5
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