Power optimization method for maximizing minimum safety rate of downlink non-orthogonal multiple access (NOMA) mobile users of unmanned aerial vehicle
A non-orthogonal multiple access, mobile user technology, applied in power management, wireless communication, electrical components, etc.
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[0054] figure 1 The impact of the transmission power of the UAV designed in the present invention on the minimum security rate of NOMA mobile users is given, where The height of the UAV is H=50 meters, and the radius of the protected area is 80 meters. From figure 1 It can be seen that in our proposed power allocation strategy, the maximum-minimum secrecy rate increases with the increase of transmission power, which is obviously better than the equal power allocation strategy. Under the equal power allocation strategy, the minimum secrecy rate corresponds to the MU with the worst channel power gain. It can be seen that the minimum secrecy rate increases in the low transmission power area and decreases in the high transmission power area. This is because when the transmission power is large enough, approximated as Similarly Too. Therefore, the minimum secrecy rate drops to zero in the region of higher transmission power.
[0055] figure 2 The influence of the UAV h...
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