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Received:August 23, 2018 Revised:September 20, 2018
Received:August 23, 2018 Revised:September 20, 2018
中文摘要: 大规模MIMO具有巨型阵列尺寸和多维阵列结构，能够有效提升无线频谱效率，是未来无线通信领域重要的物理层技术之一.但大规模阵列具有的近场效应、高计算复杂度等问题，对其无线信道建模带来很大的挑战.本论文主要针对这些挑战，对大规模MIMO的信道模型进行了深入分析.首先在球面波假设前提下，建立大规模MIMO信道模型的基本框架；进一步利用基于马德里格地图的射线跟踪算法，对信道模型参数进行求解；最后给出大规模MIMO信道时延扩展及空间距离的统计分布.上述研究结果表明，所提信道模型能够反映大规模MIMO的主要信道特征.
Abstract:Massive Multiple-Input Multiple-Output (MIMO), with giant array size and multi-dimensional array structure, has been widely considered as a key physical layer technique in future wireless communications. With regarding the large number of antenna elements, some new challenges and issues are arising. To solve these problems, a statistical channel model based on the spherical wave-front theory is proposed. Furthermore, the map-based ray-tracing algorithm with low complexity is used to compute the parameters of the proposed channel modeling. Finally, several statistical characteristics, such as delay spread and spatial distance, are given. The analysis results show that the proposed channel model is able to describe the main characteristics of massive MIMO channel.
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基金项目:国家自然科学基金（61401354，61502385）；陕西省自然科学基础研究项目（2016JQ6015）；陕西省教育厅重点实验室项目（17JS086）
引用文本：
姚俊良,刘庆,张琰,姚文雷.基于射线跟踪的大规模MIMO信道建模.计算机系统应用,2019,28(3):59-65
YAO Jun-Liang,LIU Qing,ZHANG Yan,YAO Wen-Lei.Massive MIMO Channel Modeling Based on Ray Tracing.COMPUTER SYSTEMS APPLICATIONS,2019,28(3):59-65
姚俊良,刘庆,张琰,姚文雷.基于射线跟踪的大规模MIMO信道建模.计算机系统应用,2019,28(3):59-65
YAO Jun-Liang,LIU Qing,ZHANG Yan,YAO Wen-Lei.Massive MIMO Channel Modeling Based on Ray Tracing.COMPUTER SYSTEMS APPLICATIONS,2019,28(3):59-65
