This study considers the resource allocation problem in relay networks for downlink transmission where base station (BS) communicates with multiple mobile stations (MSs) via relay stations (RSs) operating in either half-duplex (HD) or full-duplex (FD) mode. Relay gain factors for Amplify and Forward (AF) protocol are studied and a new one called adaptive AF (AAF) relaying is proposed. The AAF s...

The performance of user-cooperation in a multiaccess network is compared to that of using a wireless relay. Using the total transmit and processing power consumed at all nodes as a cost metric, the outage probabilities achieved by dynamic decode-and-forward (DDF) and amplify-and-forward (AF) are compared for the two networks. A high SNR outage analysis in conjunction with area-averaged numerica...

647 Abstract— In this letter, non-regenerative Amplify-and-Forward (AF) relay systems based on half and full duplex schemes are investigated and their performance is analyzed and compared in terms of outage probability. Although the AF relay systems have been widely investigated in many previous literatures, most of them adopted a half duplex scheme due to hardware limitation and mathematical t...

This paper describes a node pair selection scheme in relay-aided multiple source multiple destination communication system based on stable marriage problem. A general case is assumed in which all of source, relay and destination nodes are equipped with multiantenna and carry out multistream transmission. Based on several metrics introduced from inter-node channel condition, the preference order...

Wireless multi-hop relay systems are important technologies in mobile communications. These systems ensure high-speed data transfer and extended coverage area at a low cost. This paper investigates the position of a relay problem for the maximum capacity enhancement of a twoway Relay Node (RN) to achieve an efficient and scalable Long Term Evolution-Advanced (LTE-A) wireless network design. The...

In this paper, we investigate a relaying wireless sensor network (WSN) with the non-orthogonal multiple access (NOMA) and node selection schemes over Rayleigh fading. Precisely, system consists of two clusters, sink node, an amplify-and-forward (AF) relay. These sensors applying NOMA transmit sensing data from clusters via relay to sink. We derived expressions outage probability throughput for ...

We propose novel cooperative protocols for various coherent flat-fading channels composed of half-duplex nodes. We consider relay, cooperative broadcast (CB), multiple-access relay (MAR) and cooperative multiple-access (CMA) channels and devise efficient protocols for them. We also present automatic repeat request (ARQ) variants of these protocols. We evaluate the proposed protocols using the d...