Secure Beamforming in Full-Duplex Two-Way Relay Networks With SWIPT for Multimedia Transmission

Abstract

With the advent of 5G, multimedia services in wireless communication networks will grow dramatically. So far, many researches have focused on improving security, throughput and channel capacity to support multimedia services. In this paper, a new system model of full-duplex (FD) two-way amplifyand-forward (AF) relay network with simultaneous wireless information and power transfer is presented, where two FD legitimate nodes with two single-antenna communicate with each other via energy-constrained AF relay with multiple antennas, and there is a half-duplex node with single antenna who intends to eavesdrop. This paper targets to maximize the secrecy sum rate of the system by designing the transmit beamforming vector of relay under power constraint and zero-forcing constraint, where two energy harvesting protocols, namely, power splitting and time switching are considered. However the maximization problem is a non-convex optimization, and it is very complex to solve. Therefore a linear method is used to find the lower bound of the secrecy sum rate and the non-convex problem is transformed into a convex optimization problem. After that, an iterative algorithm based on difference-of-convex programming is proposed to solve this convex optimization problem. The simulation results show the good convergence of the proposed iterative algorithm and also the superiority of secrecy sum rate of our proposed scheme compared with two traditional schemes. INDEX TERMS Full duplex, two-way relay, beamforming, energy harvesting, multimedia services.

Stable Matching Relay Selection (SMRS) for TWR D2D Network With RF/RE EH Capabilities

“…In [18], the authors proposed an uplink resource sharing TWR model with RF/RE EH capabilities using particle swarm optimization (PSO) algorithm. In [19], a full-duplex TWR utilizing the amplify and forward (AF) technique along with SWIPT is presented to maximize the secrecy rate of the system using two EH protocols at the presence of one half-duplex eavesdropper. Further, the authors in [20] propose a two-phase network coding scheme for a TWR D2D network considering the intra-cell interference.…”

Multimedia Transmission Mechanism for Streaming Over Wireless Communication Channel

“…Huang et al [20] have presented a Q-Learning scheme over the cognitive network for improving multimedia transmission. Liu et al [21] have used the beamforming approach for enhancing multimedia transmission in 5G, harnessing the potential of the relay network. The following section discusses existing strategies for multimedia transmission over different variants of the wireless network.…”

Optimization of Different Deployments and Resolution of Antenna Arrays in SWIPT

“…Among them, some devices use low-power design and power harvesting is considered as a solution for providing a perpetual and effective energy supply. As a result, the wireless powered transfer (WPT) and the simultaneous wireless information and power transfer (SWIPT) have been widely investigated in recent years [10][11][12][13][14][15][16][17][18]. In [19], the coverage analysis for energy-harvesting by unmanned aerial vehicle cellular networks at millimeter-wave communication was investigated.…”