时间演进非平稳莱斯衰落信道建模及产生方法

doi:10.3969/j.issn.0255-8297.2017.01.008

应用科学学报 ›› 2017, Vol. 35 ›› Issue (1): 71-80.doi: 10.3969/j.issn.0255-8297.2017.01.008

时间演进非平稳莱斯衰落信道建模及产生方法

刘星麟¹, 朱秋明¹, 陈应兵², 陈小敏¹, 李浩¹

1. 南京航空航天大学江苏省物联网与控制技术重点实验室, 南京 210016;
2. 中国电子科技集团公司第41研究所, 山东青岛 233006

收稿日期:2016-04-05 修回日期:2016-11-03 出版日期:2017-01-30 发布日期:2017-01-30
作者简介:朱秋明,博士,副教授,研究方向:无线信道的建模和仿真,E-mail:zhuqiuming@nuaa.edu.cn
基金资助:
中央高校基本科研业务费青年科技创新基金（No.NS2015046，No.NS2016044）；国家自然科学基金（No.61571225）；江苏省普通高校研究生科研创新计划项目基金（No.SJZZ15_0040）资助

Modeling and Generation of Non-stationary Rice Fading Channel with Time Evolution

LIU Xing-lin¹, ZHU Qiu-ming¹, CHEN Ying-bing², CHEN Xiao-min¹, LI Hao¹

1. Jiangsu Key Laboratory of Internet of Things and Control Technologies, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. The 41 st Institute of China Electronics Technology Group Corporation, Qingdao 233006, Shandong Province, China

Received:2016-04-05 Revised:2016-11-03 Online:2017-01-30 Published:2017-01-30

摘要/Abstract

摘要：

针对基站-移动台之间的动态传播场景，构建一个时间演进的非平稳莱斯衰落信道模型，提出了一种基于线性调频信号叠加的产生方法，并给出模型参数的计算及更新算法.实验表明，该方法不仅可以保证衰落信道状态的平滑切换及衰落信道幅值和相位的连续性，还能复现衰落信道的非平稳特性，从而保证信道模型输出的时变包络分布和时变多普勒功率谱与期望值一致.该方法可用于时变场景下移动通信系统的性能评估和验证.

关键词: 信道模型, 非平稳衰落, 线性调频, 多普勒功率谱

Abstract:

When the transmitter or receiver moves fast, wireless radio channel for mobile communication system is non-stationary.This paper establishes a non-stationary Rice fading channel model with time evolution for the dynamic propagation link between mobile and base stations.A generation method is proposed for non-stationary fading channels based on the sum-of-linear-frequency-modulation (SoLFM) signals, and an algorithm for parameter updating designed.Experimental results show that the proposed method can ensure smooth handoff of fading channel states and continuity of fading amplitude and phase.It can also reproduce non-stationarity of a fading channel, and ensure the channel model's time-variant envelope distribution and time-variant Doppler power spectrum agree with the desired values.The model and its generation method can be applied to evaluate performance and validate a wireless mobile system in a time-variant propagation environment.

Key words: non-stationary fading, channel model, Doppler power spectrum, linear frequency modulation

中图分类号:

TN98

刘星麟, 朱秋明, 陈应兵, 陈小敏, 李浩. 时间演进非平稳莱斯衰落信道建模及产生方法[J]. 应用科学学报, 2017, 35(1): 71-80.

LIU Xing-lin, ZHU Qiu-ming, CHEN Ying-bing, CHEN Xiao-min, LI Hao. Modeling and Generation of Non-stationary Rice Fading Channel with Time Evolution[J]. Journal of Applied Sciences, 2017, 35(1): 71-80.

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时间演进非平稳莱斯衰落信道建模及产生方法

Modeling and Generation of Non-stationary Rice Fading Channel with Time Evolution

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