一种新的相关复合衰落模拟方法

doi:10.3969/j.issn.0255-8297.2015.05.002

应用科学学报 ›› 2015, Vol. 33 ›› Issue (5): 470-480.doi: 10.3969/j.issn.0255-8297.2015.05.002

一种新的相关复合衰落模拟方法

周生奎¹, 朱秋明^1,2, 戴秀超¹, 刘星麟¹, 陈学强¹

1. 南京航空航天大学雷达成像与微波光子技术教育部重点实验室, 南京 210016;
2. 中国空空导弹研究院, 河南洛阳 471009

收稿日期:2014-07-20 修回日期:2015-02-11 出版日期:2015-09-30 发布日期:2015-09-30
通信作者: 朱秋明,副教授,研究方向:无线信道勘测、建模和模拟,E-mail:zhuqiuming@nuaa.edu.cn E-mail:zhuqiuming@nuaa.edu.cn
基金资助:
国家自然科学基金(No.61172078);中国博士后科学基金(No.2013M541661);中央高校基本科研业务费青年科技创新基金(No.NS2015046);江苏省普通高校研究生科研创新计划项目基金(SJZZ15_0040)资助

A Novel Method for Generation of Correlated Composite Fading

ZHOU Sheng-kui¹, ZHU Qiu-ming^1,2, DAI Xiu-chao¹, LIU Xing-lin¹, CHEN Xue-qiang¹

1. Key Laboratory of Radar Imaging and Microwave Photonics, Ministry of Education, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China;
2. China Airborne Missile Academy, Luoyang 471009, Henan Province, China

Received:2014-07-20 Revised:2015-02-11 Online:2015-09-30 Published:2015-09-30

摘要/Abstract

摘要： 针对传统信道模型只对多径衰落进行统计建模的问题,将信道建模为包含多径及阴影衰落因素的复合模型,提出一种基于谐波叠加原理、易于硬件实现的时域相关复合衰落模拟方法. 推导了新方法输出衰落的幅值分布及相关性理论表达式,给出了仿真参数的计算方法. 基于Xilinx Virtex4 硬件平台的实测结果表明,该方法输出的信道衰落包络分布、多普勒功率谱及相关特性均与理论值吻合,可用于实验室模拟真实传播环境对无线信号的随机失真影响.

关键词: 信道模型, 信道仿真, 时域相关性, 复合衰落, 谐波叠加

Abstract: The traditional channel models usually consider the effects of multipath fading only. A new fading model including shadowing and multipath fading is established, and a novel generation method for this correlated composite fading is presented. The proposed method is based on the sum-of-sinusoids (SoS) theory that is easy to implement with hardware. Moreover, theoretical envelope distribution and correlation coefficient of output fading are derived. A method for calculating simulation parameters is given. Experiments on a Virtex4 FPGA hardware platform show that the envelope distribution, Doppler power spectrum and correlation characteristic agree well with the expected values, meaning that the proposed method can be used to simulate random distortion of wireless signals caused by real propagation environment in the lab.

Key words: channel model, channel simulation, temporal correlation, composite fading, sum-of-sinusoids

中图分类号:

TN98

周生奎, 朱秋明, 戴秀超, 刘星麟, 陈学强. 一种新的相关复合衰落模拟方法[J]. 应用科学学报, 2015, 33(5): 470-480.

ZHOU Sheng-kui, ZHU Qiu-ming, DAI Xiu-chao, LIU Xing-lin, CHEN Xue-qiang. A Novel Method for Generation of Correlated Composite Fading[J]. Journal of Applied Sciences, 2015, 33(5): 470-480.

参考文献

[1] Cheng X, Yao Q, Wen M W, Wang C X, Song L Y, Jiao B L. Wideband channel modeling and intercarrier interference cancellation for vehicle-to-vehicle communication systems [J]. IEEE Journal on Selected Areas in Communications, 2013, 31(9): 434-448.

[2] Michailidis E T, Theofilakos P, Kanatas A G. Three-dimensional modeling and simulation of MIMO mobile-to-mobile via stratospheric relay fading channels [J]. IEEE Transactions on Vehicular Technology, 2013, 62(5): 2014-2030.

[3] Nakagami M. The m-distribution: a general formula of intensity distribution of rapid fading statistical methods of radio wave propagation [M]. Japan: W C Hoffman, 1960.

[4] Alenka Z. Mobile-to-mobile wireless channels [M]. London: Artech House Publishers, 2013.

[5] Reig J, Rubio L. Estimation of the composite fast fading and shadowing distribution using the log-moments in wireless communications [J]. IEEE Transactions on Wireless Communications, 2013, 12(8): 3672-3681.

[6] Zhu Q M, Dang X Y, Xu D Z, Chen X M. Highly efficient rejection method for generating Nakagami-m sequences [J]. Electronic Letters, 2011, 47(19): 1100-1101.

[7] Souza R, Cogliatti R, Yacoub M. Efficient acceptance-rejection method for Nakagami-m complex samples [J]. Wireless Communications Letters, 2014, 3(1): 94-96.

[8] Beaulieu N C, Cheng C. Efficient Nakagami-m fading channel simulation [J]. IEEE Transactions on Vehicular Technology, 2005, 54(2): 413-424.

[9] Alimohammad A, Fard S F, Cockburn B F. Hardware implementation of Nakagami and Weibull variate generators [J]. IEEE Transactions on Very Large Scale Integration (VLSI) Systems, 2012, 20(7): 1276-1284.

[10] Alimohammad A, Fard S F. FPGA Implementation of isotropic and nonisotropic fading channels[J]. IEEE Transactions on Circuits and Systems, 2013, 60(11): 796-800.

[11] Szyszkowicz S S, Yanikomeroglu H, Thompson J S. On the feasibility of wireless shadowing correlation models [J]. IEEE Transactions on Vehicular Technology, 2010, 59(9): 4222-4236.

[12] Patzold M. Mobile fading channel [M]. 2nd ed. New York: Wiley, 2012: 95-102.

[13] Gutierrez C A, Patzold M. On the correlation and ergodic properties of the squared envelope of SOC Rayleigh fading channel simulators[J]. Wireless Personal Communications, 2013, 68(3): 963-979.

[14] Yang J X, Nour C A, Langlais C. Correlated fading channel simulator based on the overlapsave method [J]. IEEE Transactions on Wireless Communications, 2013, 12(6): 3060-3071.

[15] Abramowitz M, Stegun I A. Pocketbook of mathematical functions [M]. Thun, Frankfurt: Deutsch, 1984.

[16] Papoulis A, Pillai S U. Probability random variables and stochastic processes [M]. 4th ed. New York: McGraw-Hill, 2002: 134-135.

一种新的相关复合衰落模拟方法

A Novel Method for Generation of Correlated Composite Fading

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