The University of Southampton
University of Southampton Institutional Repository

Buffer-aided relaying for the multi-user uplink: outage analysis and power allocation

Zhang, Bo, Dong, Chen, Lei, Jing, El-Hajjar, Mohammed, Yang, Lieliang and Hanzo, Lajos (2016) Buffer-aided relaying for the multi-user uplink: outage analysis and power allocation IET Communications, 10, (8), pp. 936-944. (doi:10.1049/iet-com.2015.0338).

Record type: Article


In this study, the authors consider a two-hop network, where multiple source nodes (SNs) transmit to a destination node (DN) with the aid of a relay node (RN). The RN is equipped with a buffer, which is capable of storing multiple frames received from the SNs. During each time slot, the proposed protocol activates either the SN–RN hop or the RN–DN hop, depending on the channel quality of each hop and the buffer state at the RN. To optimise the hop activation for the network, they design a hop quality metric and propose a multi-user buffer-aided-relaying uplink (MU-BR-UL) protocol, with the aid of the minimum signal-to-noise power ratio approximation. The benefits of the proposed protocol are analysed in terms of the end-to-end (e2e) outage probability and the e2e transmission delay. Then, the optimal power allocation is proposed for minimising the e2e outage probability under the total power constraint. The results indicate that the outage performance is significantly improved when the proposed power allocation is utilised in the MU-BR-UL protocol.

PDF COM-2015-0338-PROOF.pdf - Version of Record
Restricted to Repository staff only
Download (741kB)

More information

Accepted/In Press date: 5 February 2016
Published date: 19 May 2016


Local EPrints ID: 398421
PURE UUID: 5b3f3886-e23c-4e19-b27c-25713f39cd00
ORCID for Mohammed El-Hajjar: ORCID iD
ORCID for Lieliang Yang: ORCID iD

Catalogue record

Date deposited: 25 Jul 2016 13:02
Last modified: 17 Jul 2017 18:31

Export record



Author: Bo Zhang
Author: Chen Dong
Author: Jing Lei
Author: Mohammed El-Hajjar ORCID iD
Author: Lieliang Yang ORCID iD
Author: Lajos Hanzo

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton:

ePrints Soton supports OAI 2.0 with a base URL of

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.