Computer Science

Computer Science ›› 2020, Vol. 47 ›› Issue (6): 271-275.doi: 10.11896/jsjkx.190500022

• Computer Network • Previous Articles     Next Articles

MIMO Channels with Arbitrary AoA Power Spectrum for Various Wireless Environments

CHEN Qian1, ZHOU Jie1, SHAO Gen-fu2   

  1. 1 School of Electronic and Information,Nanjing University of Information Science and Technology,Nanjing 210044,China
    2 School of Automation,Hangzhou Dianzi University,Hangzhou 310018,China
  • Received:2019-05-06 Online:2020-06-15 Published:2020-06-10
  • About author:CHEN Qian,born in 1996, master’s degree.Her main research interests is wireless communication and so on.
    ZHOU Jie,born in 1964,doctor,professor.His main research interests is wireless communication, mass MIMO and so on.
  • Supported by:
    This work was supported by the General Program of National Natural Science Foundation of China(61771248,61471153);a project funded by the priority academic program development of the Jiangsu higher educationinstitutions.

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Abstract: For wireless environments,this paper proposes an approximate algorithm for the arbitrary AoA power spectrum,which is to expand for the large-angle AoA PDF with small angles approximation,calculates and derives the fading correlation of wireless channel in the case of various fittings and measured data,then reconstructs the channel model of the MIMO for special environments,by using spatial fading correlation (SFC).Firstly,it investigates in depth the approximate algorithm and its complexity in SFC of multi-antenna arrays with small AoA angles under Gaussian and Laplace distributions,which are capable of Macrocell and Microcell.Secondly,the common channel Von Mises distribution data are used as a reference to obtain their MIMO multi-antenna SFC approximation simplifications in the angular domain.The calculation and simulation experiments show that the approximate method has a good fitting under certain conditions.The selection of the number of samples and the weighting coefficient in the large-angle expansion model and its fitting accuracy are discussed in detail.Furthermore,a method is used to quantify the applicability and calculation efficiency while analyzing the massive MIMO antenna array.Therefore,the proposed method has a good approximation,and can greatly reduce computational complexity.

Key words: Angle spread, Approximate algorithm, Fading channel correlation, MIMO, Power spectrum

CLC Number: 

  • TN911
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