Computer Science

Computer Science ›› 2021, Vol. 48 ›› Issue (6A): 414-419.doi: 10.11896/jsjkx.200900173

• Network & Communication • Previous Articles     Next Articles

Effect of Cross-polarization for Dual-polarized MIMO Channel in Satellite Communications

LENG Yue, XIE Ya-qin, LI Peng   

  1. School of Electricity and Information Engineering,Nanjing University of Information Science and Technology,Nanjing 210044,China
  • Online:2021-06-10 Published:2021-06-17
  • About author:LENG Yue,born in 1996,postgraduate.Her main research interests include sa-tellite communication and so on.
    LI Peng,born in 1984,Ph.D,professor.His main research interests include wireless communication and satellite communication.
  • Supported by:
    National Natural Science Foundation of China(61501244).

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Abstract: The combination of MIMO(multiple input multiple output) technology and satellite communications (SATCOM) canmake full use of space diversity and improve gain without adding additional power and bandwidth.In a mobile satellite system,due to the limitation of the space size on the satellite,it is not conducive to obtaining spatial diversity and multiplexing gains,so it is generally considered to construct a multi-antenna environment with different polarized antennas to obtain corresponding gains.This paper presents a method to analyze the impact of the Cross Polar Discrimination (XPD) on a single satellite dual-polarized MIMO communication system.In a polarization diversity MIMO satellite system model,through simulation from two aspects of bit error rate and channel capacity,different cross-polarization interference coefficients are evaluated in three scenarios:open area,suburban,and urban areas.The results show that the smaller the cross-polarization interference coefficient,the better the system BER(Bit Error Rate) performance and the larger the channel capacity.Moreover,when a signal is transmitted in urban areas,the channel capacity is higher than that in open area and suburban.

Key words: Channel capacity, Dual-Polarized, MIMO, Satellite communications, SINR

CLC Number: 

  • TN927.2
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