计算机科学 ›› 2015, Vol. 42 ›› Issue (3): 39-41.doi: 10.11896/j.issn.1002-137X.2015.03.008
魏利霞,曹士坷
WEI Li-xia and CAO Shi-ke
摘要: 在均匀散射环境下,当天线做简谐运动时,信道中会引入循环平稳。通过分析信道循环平稳的产生机理,定义了循环平稳度来衡量引入的循环平稳。首先当接收机以恒速做直线运动且接收机上的天线做简谐运动时,研究了信道的自相关特性,包括循环平稳性;然后用Matlab仿真工具绘出有关曲线,仿真实验结果更加清晰地显示了信道的循环平稳性;最后揭示了信道循环平稳的研究意义,并对其在该领域的应用前景进行了展望。
[1] Rad H S,Gazor S.Effects of mobile rotational movements inwireless propagation channels[J].IET Communications, 2008,2(9):1109-1117 [2] Rad H S,Gazor S.The impact of non-isotropic scattering and di-rectional antennas on mimo multicarrier mobile communication channels[J].IEEE Trans.Communications,2007,56(4):642-652 [3] Liu Yin-sheng,Tan Zhen-hui,Chen Xia.Modeling the Channel Time Variation Using High-Order-Motion Model[J].IEEE Communications Letters,2011,15(3):275-277 [4] Goldsmith A.Wireless Communications[M].Cambridge Uni-versity Press,2005 [5] Gardner W A.Statistical Spectral Analysis:A Non-probabilistic Theory[M].Prentice-Hall,Englewood Cliffs,1987 [6] Zivanovic G D,Gardner W A.Degrees of cyclostationarity and their application to signal detection and estimation[J].Signal Processing,1991,22(3):287-289 [7] Lan Kun-chan,Shih Wen-yuah.Estimating Step Distance Using Simple Harmonic Motion[C]∥ Vehicular Technology Confe-rence(VTC Spring),2012 IEEE 75th.2012:1-5 [8] Chen Liang-yu,Lan Kun-chan.Estimating walking distance with a smart phone[C]∥2012 Fifth International Syposium on Parallel Architectures,Algorithms and Programming(PAAP).2012:166-171 [9] Gardner W A.Cyclostationarity in Communications and SignalProcessing[M].IEEE Communication Society,1994 [10] M S,Hosseini A T,Amindavar H,et al.Cyclostationary Detector in Ultra Wideband Impulse Radar[C]∥2011 IEEE CIE International Conference on Radar.Volume 1,Oct.2011:24-27 |
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