In this paper, we investigate opportunistic relay and jammer cooperation schemes in multiple-input multiple-output (MIMO) buffer-aided relay networks. The network consists of one source, an arbitrary number of relay nodes, legitimate users and eavesdroppers, with the constraints of physical layer security. We propose an algorithm to select a set of relay nodes to enhance the legitimate users’ t...

Energy efficiency in multi-hop cooperative power line communication (PLC) systems has recently received considerable attention in the literature. In order to make such systems more energy-efficient, this paper proposes a relaying technique equipped with energy-harvesting capabilities. More specifically, we consider a dual-hop decode-and-forward (DF) broadband PLC relaying system in which the re...

Abstract A domain-specific virtual prototyping approach is proposed that can reduce the risks involved in programmable logic controllers (PLCs)-based embedded system programming. The proposed approach is based on an object-oriented real-time modeling concept, plus an algorithm is defined that can mechanically convert a PLC program, written in relay ladder logic (RLL), to a statechart model. In ...

This paper describes the design and development of harvesting system for the gantry system to harvest eggplants. For this purpose, the harvesting robot was successfully designed and fabricated for the gantry system to harvest eggplants. The operation of the harvester was controlled by Programmable Logic Controller (PLC). Basically, the limit switches, DC motor, and relay are connected to the PL...

Near field communication (NFC) has been a widely used radiofrequency identification (RFID) technology, credited to its convenience and security features. However, the transmitted signals can be easily eavesdropped or relayed in an open wireless channel. One of challenges is relay attack, where attacker simply relays signal bypasses encryption other means application layer. Prior works on attack...

In this paper, with the help of an intelligent reflecting surface (IRS), source (S) and destination (D) exchange information through two-way decode-and-forward relay (TW-DFR). We focus on phase optimization IRS to improve system sum rate performance. Firstly, a maximizing receive power (Max-RPS) method is proposed via eigenvalue decomposition (EVD) appreciable enhancement, which called Max-RPS-...