Physical Layer Security in Nonorthogonal Multiple Access Wireless Network with Jammer Selection

Table 1

Parameter assumptions.

Parameter	Meaning	Default value
	Density of BS
	Density of jammer
	Density of eavesdropper
	Density of user
	Transmission power of BS	46 dBm
	Transmission power of jammer	23 dBm
ε	NOMA power allocation parameter	0.3
α	Pathloss exponent	4
D	Jammer exclusion circle radius