Physical layer security for 5G non-orthogonal multiple access in large-scale networks

Physical Layer Security for Cooperative NOMA Systems

“…Moreover, from (12) and (23), for both relaying protocols, we can observe that the capacity of the strong user's link must be larger than its target rate R 2 . Therefore, the SOP expressions of AF and DF relaying NOMA systems are only affected by the channels between the relay and E when ρ → ∞.…”

“…In this work, like [12][13], we consider the worst case and assume E has the multiuser detection ability. In particular, parallel interference cancellation (PIC) is used at E to distinguish the superimposed mixture.…”

“…However, these works are not related to the NOMA system. Recently, the physical layer security for 5G NOMA in stochastic geometry networks was considered in [12]. Later, an extension of [12] was presented in [13] where two different structures were proposed to improve the secrecy performance for singleantenna and multiple-antenna stochastic geometry networks, respectively.…”

“…Recently, the physical layer security for 5G NOMA in stochastic geometry networks was considered in [12]. Later, an extension of [12] was presented in [13] where two different structures were proposed to improve the secrecy performance for singleantenna and multiple-antenna stochastic geometry networks, respectively. In [14], a new design of NOMA under secrecy considerations was proposed and the optimal designs of decoding order, transmission rates, and power allocated to each user were investigated.…”

Secrecy Outage of Max–Min TAS Scheme in MIMO-NOMA Systems

“…The optimal design of secure NOMA schemes was studied to minimize the transmit power or maximize the minimum confidential information rate subject to the SOP and quality of service constraints in [40]. The physical layer security of a large-scale NOMA network was analyzed in [41], in which all the destinations (both legitimate and illegitimate) are spatially deployed at random locations. Furthermore, the work in [41] was extended in [42] and a MISO NOMA system was considered and artificial noise was employed to heighten the secrecy performance.…”