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Table 1 Default values of other parameters

From: Joint beamforming and power allocation for wireless powered UAV-assisted cooperative NOMA systems

Parameter

Value

System bandwidth

1M

Maximum transmit power at BS (Ps)

20 dBm

Noise power \(\left ({\sigma _{r}^{2} = \sigma _{1}^{2} = \sigma _{2}^{2}} \right) \left ({{P_{0}}}\right)\)

− 70 dBm

The number of transmit antenna at BS and UAV (M,N)

M=N=4

SI suppress level (ρ)

−50 dB

Tolerant error (ε)

10−6

Energy conversion efficiency (η)

0.8

Minimum data rate at U1 and U2 \(\left ({\bar R}\right)\)

1 Mbits

Azimuth angle (θ)

45

The altitude of UAV (h)

30m

Circle radius of UAV’s fight (r)

40m