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Research on Space Diversity Technique of Laser Atmospheric Communication Based on MIMO |
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PP: 323-329 |
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Author(s) |
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Li Dashe,
Liu Shue,
Wang Bin,
Li Guangwen,
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Abstract |
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| Space diversity is one of the important techniques of overcoming the influence of atmospheric turbulence on laser
communication. Having analyzed the theory of diversity technique, the paper has focused on researching the space diversity technique
and established the joint probability density function of the threshold value. Outage probability is studied in laser communication and
get the variation curve of power gain and the number of antenna in different atmospheric turbulence. Based on the BPSK modulation
mode, the bit error ratio mode of the multi-input multi-output (MIMO) is set up and reach the conclusions that maximum power gain is
obtained with an equal amount of transmitting antenna and receiving antenna and the total amount should be not greater than nine. The
space diversity technology can effectively reduce the bit error ratio of the system. |
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