Secrecy Performance of Buffer-Aided Hybrid Virtual Full-Duplex and Half-Duplex Relay Activation

Abstract

This paper proposes a novel secure buffer-aided relay selection capable of amalgamating virtual full-duplex (VFD) and half-duplex (HD) modes. Our scheme is designed to allow multiple relays to share a common packet seamlessly and to eliminate the effects of inter-relay interference induced in the VFD mode by successive interference cancellation. Since the VFD mode has the potential to achieve a higher secrecy capacity than the other four HD modes, the highest priority to the activation of the VFD mode is given in the proposed scheme. Our performance results demonstrate that the proposed scheme outperforms the benchmarks in terms of the secrecy outage probability, the delay, and the average secrecy rate.

On the Performance of Interference-Based Energy-Harvesting-Enabled Wireless AF Relaying Communication Systems

“…Finally, substituting ( 49), ( 53) and ( 54) into (48) along with some simplifications and manipulations gives (25), which completes the proof.…”

“…, while, as in ( 7), the relay transmit power P * r is fixed and equals P r . Considering this in (13) gives the SIR for this energy harvesting mode as in (25). The outage probability at D for energy harvesting mode I, say P I out , can be obtained by…”

“…where γ th = 2 R − 1 is a predetermined threshold and R is the transmission data rate at S. Due to the intractable form of the R.V X I in (25), we propose to evaluate P I out as…”

“…Because of its remarkable efficiency in reducing deep fading effects, augmenting network coverage, and increasing diversity gain and throughput, the technique of relaying has been considered among the emerging communication solutions that have paved the way to attain the growing demands on higher wireless access data rates [22]- [25]. Thus, it has gained huge attraction in both researches and implementations and become among the core specifications in variant evolving technologies including 5G, IoT, device-to-device (D2D), vehicle-to-vehicle (V2V), nonorthogonal-multiple-access (NOMA), and unmanned aerial vehicle (UAV) networks and others [22]- [24], [26]- [32].…”

Implementation of In-Band Full-Duplex Using Software Defined Radio with Adaptive Filter-Based Self-Interference Cancellation

“…Therefore, as a possible candidate technology for next generation wireless communication systems, there are many research groups focusing on the realization of FD systems [5][6][7][8][9][10][11][12][13][14], or designing communication techniques for different wireless communication systems based on FD system assumptions [15][16][17][18][19][20][21][22][23][24][25]. For example, in [6], the research group implements a prototype of IBFD system, which is a very famous prototype research of the IBFD system.…”