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Outage analysis of superposition modulation aided network coded cooperation in the presence of network coding noise

Outage analysis of superposition modulation aided network coded cooperation in the presence of network coding noise
Outage analysis of superposition modulation aided network coded cooperation in the presence of network coding noise
We consider a network, where multiple sourcedestination pairs communicate with the aid of a half-duplex relay node (RN), which adopts decode-forward (DF) relaying and superposition-modulation (SPM) for combining the signals transmitted by the source nodes (SNs) and then forwards the composite signal to all the destination nodes (DNs). Each DN extracts the signals transmitted by its own SN from the composite signal by subtracting the signals overheard from the unwanted SNs. We derive tight lower-bounds for the outage probability for transmission over Rayleigh fading channels and invoke diversity combining at the DNs, which is validated by simulation for both the symmetric and the asymmetric network configurations. For the high signal-to-noise ratio regime, we derive both an upperbound as well as a lower-bound for the outage performance and analyse the achievable diversity gain. It is revealed that a diversity order of 2 is achieved, regardless of the number of SN-DN pairs in the network. We also highlight the fact that the outage performance is dominated by the quality of the worst overheated link, because it contributes most substantially to the network coding noise. Finally, we use the lower bound for designing a relay selection scheme for the proposed SPM based network coded cooperative communication (SPM-NC-CC) system.

diversity reception, educational institutions, network coding, relays, signal to noise ration, tin
0018-9545
1-9
Zhang, Bo
b4357fc4-109b-4499-a865-ad0b2386c076
Hu, Jie
84967196-e5da-49dc-8a0d-4e2507a5fcde
Huang, Ying
4d003995-8ee9-4115-9778-a96bf1aa9a02
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1
Zhang, Bo
b4357fc4-109b-4499-a865-ad0b2386c076
Hu, Jie
84967196-e5da-49dc-8a0d-4e2507a5fcde
Huang, Ying
4d003995-8ee9-4115-9778-a96bf1aa9a02
El-Hajjar, Mohammed
3a829028-a427-4123-b885-2bab81a44b6f
Hanzo, Lajos
66e7266f-3066-4fc0-8391-e000acce71a1

Zhang, Bo, Hu, Jie, Huang, Ying, El-Hajjar, Mohammed and Hanzo, Lajos (2015) Outage analysis of superposition modulation aided network coded cooperation in the presence of network coding noise IEEE Transactions on Vehicular Technology, pp. 1-9.

Record type: Article

Abstract

We consider a network, where multiple sourcedestination pairs communicate with the aid of a half-duplex relay node (RN), which adopts decode-forward (DF) relaying and superposition-modulation (SPM) for combining the signals transmitted by the source nodes (SNs) and then forwards the composite signal to all the destination nodes (DNs). Each DN extracts the signals transmitted by its own SN from the composite signal by subtracting the signals overheard from the unwanted SNs. We derive tight lower-bounds for the outage probability for transmission over Rayleigh fading channels and invoke diversity combining at the DNs, which is validated by simulation for both the symmetric and the asymmetric network configurations. For the high signal-to-noise ratio regime, we derive both an upperbound as well as a lower-bound for the outage performance and analyse the achievable diversity gain. It is revealed that a diversity order of 2 is achieved, regardless of the number of SN-DN pairs in the network. We also highlight the fact that the outage performance is dominated by the quality of the worst overheated link, because it contributes most substantially to the network coding noise. Finally, we use the lower bound for designing a relay selection scheme for the proposed SPM based network coded cooperative communication (SPM-NC-CC) system.

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Accepted/In Press date: 2 May 2014
e-pub ahead of print date: August 2014
Published date: February 2015
Keywords: diversity reception, educational institutions, network coding, relays, signal to noise ration, tin
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 366677
URI: http://eprints.soton.ac.uk/id/eprint/366677
ISSN: 0018-9545
PURE UUID: 4f92dd60-936e-4a5b-9b90-77f78b7aa9f5
ORCID for Mohammed El-Hajjar: ORCID iD orcid.org/0000-0002-7987-1401
ORCID for Lajos Hanzo: ORCID iD orcid.org/0000-0002-2636-5214

Catalogue record

Date deposited: 07 Jul 2014 11:46
Last modified: 03 Nov 2017 06:29

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Contributors

Author: Bo Zhang
Author: Jie Hu
Author: Ying Huang
Author: Mohammed El-Hajjar ORCID iD
Author: Lajos Hanzo ORCID iD

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