Abstract
In this paper, we analyze the secrecy outage probability (SOP) and the fairness of average packet transmission time for a non-orthogonal multiple access (NOMA) system which consists of a base station (BS) and two legal NOMA users in the presence of an eavesdropper (Eve). In order to extract the superimposed signal, the Eve is considered in two modes, i.e., successive interference cancellation (SIC) mode and parallel interference cancellation (PIC) mode. Accordingly, we analyze the secrecy performance of the considered system by deriving a new exact expression for SOP. Furthermore, the optimal power allocation between two legal users is determined such that the average transmission time from BS to two legitimate users are approximately equal to achieve the fairness of average packet transmission time. Monte Carlo simulations are provided to verify our analytical results.
Highlights
Radio frequency is one of the most important resources in wireless communication
Motivated by all of the above, in this paper, we introduce the concept of fairness of average packet transmission time, and examine the secrecy outage probability of each user in the presence of an Eve who can operate in one of the interference cancelation modes to extract desired signal, named successive interference cancellation (SIC) or parallel interference cancellation (PIC) technique
In the PIC mode, the Eve is assumed to be smarter than U1 and U2, i.e., it is able to decode the signal of multi-user at the same time and the interference caused by other signals can be cancelled effectively
Summary
Radio frequency is one of the most important resources in wireless communication. it has been exhausted due to outburst demands of wireless services. Huu et al.: SOP and Fairness of Packet Transmission Time in a NOMA System single output (SISO) NOMA system, where each user has a predefined quality of service requirement. They derived the closed-form expression of an optimal power allocation policy to maximize the SSR. Motivated by all of the above, in this paper, we introduce the concept of fairness of average packet transmission time, and examine the secrecy outage probability of each user in the presence of an Eve who can operate in one of the interference cancelation modes to extract desired signal, named SIC or PIC technique.
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