Over-the-air computation (AirComp) has emerged as a promising technique in future intelligent wireless networks, which enables swift functional among distributed devices (WDs) by exploiting the superposition property of channels. This paper studies new hierarchical AirComp network over large ar...

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Unified performance analysis is carried out for amplify-and-forward (AF) multiple-input-multipleoutput (MIMO) beamforming (BF) two-way relay networks in Rayleigh fading with five different relaying protocols including two novel protocols for better performance. As a result, a novel closedform sum-bit error rate (BER) expression is presented in a unified expression for all protocols. A new close...

In this paper, we investigate the transceiver design for amplify-and-forward (AF) interference multiple-input multiple-output (MIMO) relay communication systems when the direct links between the source and destination nodes are taken into consideration. The minimum mean-squared error (MMSE) of the signal waveform estimation at the destination nodes is chosen as the design criterion to optimize ...

In this study, two relay-aided interference alignment (IA) schemes are proposed for the quasi-static M × 2 X channel where M is the number of transmitters and two is the number of receivers, respectively. The first scheme utilises one full-duplex relay and the second one utilises two half-duplex relays. In the proposed schemes, the transmitters transmit signals in every time slot and the relays...

This paper considers the problem of beamforming optimization in an amplify-and-forward (AF) relaying cooperative network, in which the relay node harvests the energy from the radio-frequency (RF) signal. Based on the self-energy recycling relay protocol, we study the beamforming optimization problem. The formulated problem aims to maximize the achievable rate subject to the available transmitte...

Explosive growth in wireless technology caused by development in digital and RF circuit fabrications put some serious challenges on wireless system designers and link budget planning. Low transmit power, system coverage and capacity, high data rates, spatial diversity and quality of services (QOS) are the key factors in future wireless communication system that made it attractive. Dual-hop rela...

In this paper, we are planning to introduce a new method for relay selection and resource allocation in OFDMbased cooperative networks. Up to now, there have been relatively few works clearly concentrating on the combination of relay selection and resource allocation in such networks. In our work, a network with a single transmitter, a single receiver and a group of relays is considered. Relays...

Future Communication networks are tending towards a diverse wireless networking world where the positioning information (PI) could be helpful in different techniques like the dynamic resource allocation. On the other hand, the PI could be widely used for cooperative techniques in the relay and/or routing selection process. In this paper, we propose to use the PI in the selection of the relays a...

In this paper we study the multiple-input multiple-output two-way relay channel (MIMO-TWRC) when the nodes use analog beamforming. Following the amplify-and-forward (AF) strategy, the problem consists of finding the transmit and receive beamformers of the nodes and the relay, and the power allocated to each one, that achieve the boundary of the capacity region. We express the optimal node beamf...