Computer Science ›› 2016, Vol. 43 ›› Issue (3): 99-102.doi: 10.11896/j.issn.1002-137X.2016.03.020

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Research on Channel Loss of Tropospheric Scatter Communication Based on MIMO

TANG Tao, ZHANG Jie, PI Yu-qian, SHEN Xuan-fan and LIAO Yong   

  • Online:2018-12-01 Published:2018-12-01

Abstract: The channel loss of the tropospheric scatter communication in Multiple-Input Multiple-Output (MIMO) scenarios was studied in this paper.When designing a long distance MIMO communication system,one of the key technologies is the estimation of link loss,but all of existing technologies ignore the energy loss of collisions between beam and scatterers when estimating loss.According to the theory of turbulent incoherent scattering,firstly,we modeled troposphere as many differentiable curves,so that it can constitute curved trapezoid together with transmit and receive antenna array.And then we calculated the angular relation of angle of incidence,angle of reflection and scattering angle on the basis of this geometric channel model.Secondly,we established the energy distribution model of the scattered wave on the surface of scatterers after electromagnetic beam injection.Finally,according to the propagation distance of beam,we quantified the scattering channel loss,and derived the fading coefficients and channel matrix.By comparing simulation results with the actual data,we verified validity and accuracy of the proposed model on the problem of estimation of link loss,meanwhile gave suggestions for the design on elevation angle of receive antenna according to the simulation results.

Key words: Multiple-Input Multiple-Output (MIMO),Tropospheric scatter communication,Channel modeling,Scattering coefficient

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