Modeling and simulation of the non-stationary fading channels under fast time-variant environment

Boyu HUA; Qiuming ZHU; Xiaoxiang HE; Kai MAO

doi:10.11959/j.issn.1000-0801.2020062

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Modeling and simulation of the non-stationary fading channels under fast time-variant environment

Research and Development | 更新时间：2024-06-05

- Modeling and simulation of the non-stationary fading channels under fast time-variant environment
- Telecommunications Science Vol. 36, Issue 5, Pages: 56-64(2020)
- 作者机构：
- 作者简介：
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- DOI：10.11959/j.issn.1000-0801.2020062
  CLC： TN011
- Published Online：2020-05，
  
  Published：20 May 2020
- 稿件说明：
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Boyu HUA, Qiuming ZHU, Xiaoxiang HE, et al. Modeling and simulation of the non-stationary fading channels under fast time-variant environment[J]. Telecommunications science, 2020, 36(5): 56-64.
DOI：

Boyu HUA, Qiuming ZHU, Xiaoxiang HE, et al. Modeling and simulation of the non-stationary fading channels under fast time-variant environment[J]. Telecommunications science, 2020, 36(5): 56-64. DOI： 10.11959/j.issn.1000-0801.2020062.

摘要

针对高速列车、无人机、车联网等快速时变通信场景下信道呈现非平稳性的问题，提出一种改进的信道建模仿真方法。通过引入积分项和随机偏移，该方法良好再现时变散射环境下的非平稳信道，同时保证各散射支路的独立性。数值仿真结果表明，改进方法模拟的信道统计特性（如概率密度函数、自相关函数和多普勒功率谱密度）与理论值吻合良好。因此，该方法在未来高速移动场景的无线信道建模仿真和通信系统性能评估中具有潜在价值。

Abstract

For solving the problem of non-stationary features in rapid time-varying scenarios

such as high-speed railway

unmanned aerial vehicle and V2X communication

an improved simulation method for non-stationary fading channels was proposed.Introducing the integral items and random offset

this method can revive non-stationary channels under time-variant scattering scenarios and ensure a smooth transition between two adjacent channel states.Numerical simulations show that simulated statistical properties

such as

the probability density function

auto-correlation function

and Doppler power spectral density have good agreements with the theoretical ones.Thus

this method can be applied for wireless channel modeling and communication system evaluation of future high-speed mobile scenarios.

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Keywords

references

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