In wireless networks, it has always been a challenge to satisfy high traffic throughput demands, due to limited spectrum resources. In past decades, various techniques, including cooperative communications, have been developed to achieve higher communication rates. This thesis addresses the challenges imposed by cooperative wireless networks, in particular focusing on practical code constructio...

This paper proposes a new model for wireless relay networks referred to as “1-2-1 network”, where two nodes can communicate only if they point “beams” at each other, otherwise no signal be exchanged or interference generated. is motivated by millimeter wave communications where, due the high path loss, link between exist beamforming gain both sides established, while in absence of received well...

In the neighbourhood gossiping problem, each node of a network starts with a unique message and must learn the messages of all of its neighbours. In this paper, we prove upper and lower bounds for neighbourhood gossiping in hypercubes under the single-port half-duplex and single-port full-duplex communication models.

IEEE 802.3 Ethernet networks, a standard LAN environment, provide a way to auto-negotiate the settings of capacity (10, 100, or 1000Mb/s) and duplex (fullor half-). Under certain conditions described below, the auto-negotiation protocol fails to work properly. The resultant configuration problem, duplex mismatch, appears to be common; when this problem occurs, the connectivity is impaired, but ...

We propose a novel mode of operation for Amplify-and-Forward relays in which the spectra of the relay input and output signals partially overlap. This partial-duplex relaying mode encompasses half-duplex and full-duplex as particular cases. By viewing the partial-duplex relay as a bandwidthpreserving Linear Periodic Time-Varying system, an analysis of the spectral efficiency in the presence of ...

Recently the in-band full-duplex in wireless communication has evolved into a mature technology since the self-interference cancellation technique is able to support fullduplex capability. Moreover, some researchers focus on the full-duplex media access control (MAC) protocol design for wireless local area networks (WLANs). However, it is assumed that all the node have full-duplex capability in...

Abstract With the massive growth of wireless networks comes a bigger impact collisions and interference, which has negative effect on throughput energy efficiency. To deal with this problem, we propose an in-band collision interference detection scheme based full-duplex technology. study its performance, compare efficiency performance traditional half-duplex symmetric transmissions. Our analysi...

Multi-hop relay channels use multiple relay stages, each with multiple relay nodes, to facilitate communication between a source and destination. Previously, distributed space-time coding was used to maximize diversity gain. Assuming a low-rate feedback link from the destination to each relay stage and the source, this paper proposes end-to-end antenna selection strategies as an alternative to ...

A water-filling (WF) method is one of the techniques to improve a performance of multiple-input multiple-output (MIMO) systems. However, the application of the WF method to multiple-hop MIMO relay systems (MMRSs) has not been discussed, especially in amplify-and-forward (AF) schemes. In this paper, the WF method for MMRSs with AF scheme is proposed and evaluated in both perfect and imperfect ch...