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In this paper, the performance of radio frequency energy harvesting system with multiple power-constrained relays over Rician/Rayleigh fading channels is studied. This considered system consists of one power and information source, multiple power-constrained relays and one destination. In order to exploit the diversity advantage of cooperative network with low computational complexity, the relays...
The transfer of energy via radio frequency (RF) is the new solution for prolonging the lifetime of wireless networks. This paper investigates the secrecy performance of RF energy harvesting system that consists of one power transfer station, multiple power-constrained information sources and one destination in the presence of one eavesdropper over Rayleigh fading channels. To do so, the exact closed-form...
Nowadays, physical layer secrecy has become the new approach to enhance information security of wireless networks and have attracted the attention of lot of researchers in the world. This paper investigates the physical layer secrecy performance of radio frequency energy harvesting (RF-EH) networks over Rayleigh fading channels. The considered RF-EH system consists of multiple power transfer stations,...
In this paper, we investigate the performance of an amplify-and-forward two-way relay network, in which the relay can harvest the energy from the radio frequency and all channels are subject to Nakagami- \textit{m} fading. In particular, we assume that the relay has a single antenna, while two sources are equipped with multiple antennas. Also, two sources use the maximal ratio transmission (MRT) and...
This paper analyzes a novel multiple-input single- output (MISO) simultaneous wireless information and power transfer (SWIPT) system model in the presence of an active eavesdropper over the frequency-selective fading channel. In this model, a transmitter applies the time reversal (TR) beamforming technique to combat the fading effects whereas a legitimate user employs a power splitter to jointly receive...
This paper investigates the impact of power transfer station selection on the physical layer secrecy performance of radio frequency energy harvesting (EH) networks. The best power transfer station is selected among multiple power transfer stations in EH networks to increase the harvested power of energy constrained users. The exact closed-form expressions of existence probability of secrecy capacity...
In this paper, the wireless information and power transfer performance in amplify-and-forward (AF) relay net- works with multiple antennas is investigated over dissimilar fading channels. The considered network consists of a power transfer/information source, an energy-constrained relay and a destination. The source and the destination are single antenna devices, whereas the relay is equipped with...
Based on the capability of harvesting the energy of all paths in the multipath environment, time-reversal (TR) transmission technique offers a great potential of low-complexity energy-efficient communications for future wireless network. The TR-employed systems benefit from a significantly reduced leakage of message-bearing signal to unintended users or eavesdroppers. In this paper, we propose a term...
Today, wireless networks become the most popular way to communicate. However, information can be easily eavesdropped or extracted by eavesdroppers due to the broadcast nature of wireless communication. Multi-hop relay communication systems provide for higher secrecy performance than direct transmission techniques. In this paper, the physical layer secrecy performance of multi-hop decode-and-forward...
In this paper, we investigate the physical layer secrecy performance of a single-input single-output system that consists of single antenna devices and operates in the presence of a single antenna passive eavesdropper over dissimilar fading channels. In particular, we consider two scenarios in terms of dissimilar fading channel arrangements: 1) The legal/illegal channels are subject to Rayleigh/Rician...
In this paper, we focus on the physical layer secrecy performance analysis of Ultra Wideband system consisting of a multi-antenna transmitter using transmit antenna selection and single antenna receiver, in the presence of a single antenna passive eavesdropper over Rayleigh fading channel. Specifically, the exact closed-form expressions of probability of existence of secrecy capacity and the secrecy...
Physical layer secrecy in wireless communication is a new approach of information security and has emerged into a fascinating topic attracting lots of research. Ultra-WideBand (UWB) technology in conjunction with Time-Reversal (TR) is used to improve the speed of transmission and reduce the cost and complexity for the receiver. This paper focuses on the evaluation of physical layer secrecy in Multi-Input...
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