基于14.8GHz高频段无线信道测量与建模

发布时间：2018-05-12 13:46

本文选题：5G + 高频段　；参考：《南京理工大学》2017年硕士论文

【摘要】：随着无线移动通信的快速发展,未来移动数据量将会呈现爆炸式增长,现有的3G/4G移动通信系统难以应对这种需求,第五代移动通信系统(5G)研究在近年内开始如火如荼地展开。由于传统移动蜂窝频段的频谱资源面临严重短缺的局面,对于高频段的开发与利用显得至关重要,被越来越多的研究者视为5G通信技术的重点之一。无线信道的测量和建模对通信系统设计至关重要。本文从未来5G的需求出发,以无线电波传播理论为背景,参考国内外高频段研究成果,将理论分析和实际测量相结合,对高频段无线信道传播特性展开了相应的研究工作。查阅了电磁波传播机制和无线信道传播特性等相关理论知识,调研了国内外高频段相关研究成果,学习了无线信道建模的相关知识,参考了国内外搭建的无线信道测量平台,自主搭建了一套基于14.8GHz的无线信道自动化测量采集平台,采用基于PN序列的时域测量系统,开展了室外校园环境,室内多媒体教室环境和室内走廊环境无线信道测量工作,对测量数据的处理采用基于floating intercept模型的滑动相关算法,应用最小二乘法建立了距离与路径损耗之间的相互关系,并计算获得了不同场景中的路径损耗指数和阴影衰落,由此分析了传播信号的大尺度特性,完成了多场景的无线信道建模。实验测量结果表明,14.8GHz频段具有良好传播特性,在未来5G通信中具有较为显著的应用前景。
[Abstract]:With the rapid development of wireless mobile communication, the amount of mobile data will increase explosively in the future. The existing 3G/4G mobile communication system can not cope with this demand. The research of the fifth generation mobile communication system (5G) began to be carried out in full swing in recent years. Because of the serious shortage of the spectrum resources in the traditional mobile cellular band, it is very important for the development and utilization of the high frequency band. It is regarded as one of the key points of 5G communication technology by more and more researchers. The measurement and modeling of wireless channel is very important to the design of communication system. In this paper, based on the requirement of 5G in the future, based on the theory of radio wave propagation, and referring to the research results of high frequency band at home and abroad, combining theoretical analysis with practical measurement, the corresponding research work on the characteristics of wireless channel propagation in high frequency band is carried out. The related theoretical knowledge of electromagnetic wave propagation mechanism and wireless channel propagation characteristics are consulted, the related research results of high frequency band at home and abroad are investigated, the relevant knowledge of wireless channel modeling is studied, and the wireless channel measurement platform built at home and abroad is referred to. A wireless channel automatic measurement acquisition platform based on 14.8GHz is built, and the wireless channel measurement work is carried out in the outdoor campus environment, the indoor multimedia classroom environment and the indoor corridor environment by using the time domain measurement system based on PN sequence. A sliding correlation algorithm based on floating intercept model is used to process the measured data. The relationship between distance and path loss is established by using the least square method, and the path loss index and shadow fading in different scenarios are calculated. The large scale characteristics of propagating signal are analyzed, and the wireless channel modeling of multi-scene is completed. The experimental results show that the 14.8 GHz band has good propagation characteristics, and has a more significant application prospect in 5G communication in the future.
【学位授予单位】：南京理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TN929.5

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