In wireless industrial networks consisting of distributed sensors and actuators, the problem of providing reliable and timely communication is still one of the key challenges. Previous research has proved that relaying or socalled cooperative communications can be fruitfully deployed in wireless industrial networks. The goal of the present work is to investigate how different types of channels ...

—This paper considers a two-way relay network (TWRN) with two sources and one relay node, where each source is equipped with a single antenna, while the relay node is equipped with a large number of antennas. We propose two low-complexity physical-layer differential network coding schemes for such TWRNs, namely, Superimposition Coding based Differential Beamforming (SC-DBF) and Decode-andForwa...

We use information theoretic achievable rate formulas for the multi-relay channel to study the problem of optimal placement of relay nodes along the straight line joining a source node and a sink node. The achievable rate formulas that we use are for full-duplex radios at the relays and decodeand-forward relaying. For the single relay case, and individual power constraints at the source node an...

A new coding scheme for general N -node relay networks is presented for unicast, multicast, and broadcast. The proposed distributed decode–forward scheme combines and generalizes Marton coding for single-hop broadcast channels and the Cover–El Gamal partial decode–forward coding scheme for 3-node relay channels. The key idea of the scheme is to precode all the codewords of the entire network at...

In this paper, we model a specific relay channel named relay multiple access channel (RMAC) aiming at providing a clue to select the relay node in multiple access channels such as the uplink of cellular communication system. In this channel, the relay node not only aids to send the information of the source but also sends its private message to the destination. We derive the achievable rate reg...

A low complexity distributed coding scheme is proposed for communications over Rayleigh fading channels. Convolutional Coding (CC) assisted Differential Phase-Shift Keying (DPSK) modulation is employed at the source node for conveying the source signals to two relay nodes as well as to the destination node during the first transmission period. Iterative detection exchanging extrinsic informatio...

This paper presents an outage performance of multiple access relay channel (MARC) for decode-and-forward (DF) relay and amplify-and-forward (AF) relay selection. We consider the multiple-access relay channel with two source nodes, one relay node and one destination node. In MARC, multiple sources transmit to a common destination simultaneously with the assistance of a single relay. In a relayin...

This paper presents achievable regions in slotted ALOHA throughput both without and with network coding for one-relay twohop wireless networks between two end node groups. In this paper, there are no restrictions on the total traffic and the number of end nodes per group. It follows that the relay node will be generally involved with asymmetric bidirectional traffic. This paper derives closed-f...

We consider a mobile ad hoc network consisting of three types of nodes: source, destination, and relay nodes. All the nodes are moving over a bounded region with possibly different mobility patterns. We introduce and study the notion of relay throughput, i.e. the maximum rate at which a node can relay data from the source to the destination. Our findings include the results that a) the relay th...

Device to device communication is the interest of fifth generation where the User Equipments (UEs) are capable to directly communicate with other device with partial involvement of base station (BS). However, devices that are not in proximity area, communicate with other devices (relay). This relay selection is done by Base Station (Network Assisted). Network assisted Multihop device to device ...