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基于RS-GBSM M2M信道模型的Wigner-Ville 功率谱仿真与分析

发表时间:2023-06-30  浏览量:319  下载量:56
全部作者: 赵屹,韦再雪
作者单位: 北京邮电大学信息与通信工程学院
摘 要: 为了充分研究通信系统中收发两端移动性对信道时变功率谱的影响,本文对RS-GBSM M2M信道模型的时变功率谱进行了仿真分析。由于Wigner-Ville谱的性能在时变功率谱当中相对较优,故仿真结果主要围绕RS-GBSM M2M信道模型的Wigner-Ville谱而展开。本文充分研究并仿真了RS-GBSM M2M信道模型,并对其Wigner-Ville谱进行了分析。首先作出了收发两端移动速度和移动方位角不同变化情况下,RS-GBSM M2M信道模型的自相关函数图像,然后利用傅里叶变换作出了在这些不同的变化情况下,RS-GBSM M2M信道模型的Wigner-Ville谱密度图像,并针对这些变化情况进行了对比分析,得出了当收发两端散射体的俯仰角和方位角均服从均匀分布时,信道模型的Wigner-Ville谱密度图像的带宽只与移动速度有关而与移动方位角无关的结论。最后将Wigner-Ville谱与传统傅里叶功率谱进行了对比,得出了相较于传统傅里叶功率谱,Wigner-Ville谱的性能更优的结论。
关 键 词: 通信技术;功率谱仿真与分析; RS-GBSM M2M信道模型;时变功率谱;Wigner-Ville谱
Title: Simulation and analysis of Wigner-Ville power spectrum based on RS-GBSM M2M channel model
Author: ZHAO Yi, WEI Zaixue
Organization: School of Information and Communication Engineering, Beijing University of Posts and Telecommunications
Abstract: In order to thoroughly study the influence of the mobility of the transmitter and receiver on the time-variant power spectrum of the channel in the communication system, this essay simulated and analysed time-variant power spectrum of RS-GBSM M2M channel model. Due to the relatively excellent feature of Wigner-Ville spectrum among the time-variant power spectra, the simulation results were mainly focued on the Wigner-Ville spectrum of the RS-GBSM M2M channel model. RS-GBSM M2M channel model was thoroughly studied and simulated, and its Wigner-Ville spectrum was analyzed in the essay. Firstly, the graph of autocorrelation function of the RS-GBSM M2M channel model in different changing situations of the moving velocities and the moving azimuth angles of the transmitter and the receiver was drawn. Then, with the advantage of Fourier transform, the graph of Wigner-Ville spectrum density of the RS-GBSM M2M channel model in these different changing situations was drawn. The comparative analysis was made according to these changing situations. The conclusion that when the elevation angles and azimuth angles of the transmitter and the receiver obey uniform distribution, the bandwidth of the graph of the Wigner-Ville spectrum density of the channel model is only relevant to the moving velocities but irrelevant to the moving azimuth angles is reached. Finally, the Wigner-Ville spectrum was compared with the traditional Fourier power spectrum. The conclusion is that the performance of the Wigner-Ville spectrum is better than the traditional Fourier power spectrum.
Key words: communication technology; simulation and analysis of power spectrum; RS-GBSM M2M channel model; time-variant power spectrum; Wigner-Ville spectrum
发表期数: 2023年6月第2期
引用格式: 赵屹,韦再雪. 基于RS-GBSM M2M信道模型的Wigner-Ville 功率谱仿真与分析[J]. 中国科技论文在线精品论文,2023,16(2):250-260.
 
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