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Seek and Decode: Random Access with Physical-Layer Network Coding and Multiuser Detection

Cocco, Giuseppe and Pfletschinger, Stephan Franz and Navarro, Monica (2016) Seek and Decode: Random Access with Physical-Layer Network Coding and Multiuser Detection. Transactions on Emerging Telecommunications Technologies. Wiley. ISSN 2161-3915

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Abstract

We present a novel scheme for Slotted ALOHA random access systems (RAS) that combines physical-layer network coding (PLNC) with multiuser detection (MUD). PLNC and MUD are applied jointly at the physical (PHY) layer in order to extract any linear combination of messages experiencing a collision within a slot. The set of combinations extracted from a whole frame is then processed by the receiver to recover the original packets. A simple pre-coding stage at the transmitting terminals allows the receiver to further decrease the packet loss rate. We present results for the decoding at the PHY layer as well as several performance measures at frame level, namely throughput, packet loss rate and energy efficiency. The results we present are promising and suggest that a cross layer approach leveraging on the joint use of PLNC and MUD can significantly improve the performance of RA systems in the presence of slow fading.

Item URL in elib:https://elib.dlr.de/106237/
Document Type:Article
Title:Seek and Decode: Random Access with Physical-Layer Network Coding and Multiuser Detection
Authors:
AuthorsInstitution or Email of AuthorsAuthors ORCID iD
Cocco, Giuseppegiuseppe.cocco (at) dlr.deUNSPECIFIED
Pfletschinger, Stephan FranzStephan.Pfletschinger (at) hs-offenburg.deUNSPECIFIED
Navarro, Monicamonica.navarro (at) cttc.esUNSPECIFIED
Date:2016
Journal or Publication Title:Transactions on Emerging Telecommunications Technologies
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In SCOPUS:Yes
In ISI Web of Science:Yes
Editors:
EditorsEmail
Dohler, MischaUNSPECIFIED
Publisher:Wiley
ISSN:2161-3915
Status:Published
Keywords:Physical-layer network coding; multiuser detection; wireless random access; block-fading channel
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Communication and Navigation
DLR - Research area:Raumfahrt
DLR - Program:R KN - Kommunikation und Navigation
DLR - Research theme (Project):R - Vorhaben Multimedia Satellitennetze
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Satellite Networks
Deposited By: Cocco, Dr.-Ing. Giuseppe
Deposited On:27 Sep 2016 16:45
Last Modified:31 Jul 2019 20:03

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