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A novel user pairing scheme for functional decode-and-forward multi-way relay network

Islam, Shama M., Durrani, Salman and Sadeghi, Parastoo 2015, A novel user pairing scheme for functional decode-and-forward multi-way relay network, Physical communication, vol. 17, pp. 128-148, doi: 10.1016/j.phycom.2015.08.009.

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Title A novel user pairing scheme for functional decode-and-forward multi-way relay network
Author(s) Islam, Shama M.
Durrani, Salman
Sadeghi, Parastoo
Journal name Physical communication
Volume number 17
Start page 128
End page 148
Total pages 21
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2015-12
ISSN 1874-4907
1876-3219
Keyword(s) multi-way relay network
functional decode and forward
pairing scheme
wireless network coding
Summary In this paper, we consider a functional decode and forward (FDF) multi-way relay network (MWRN) where a common user facilitates each user in the network to obtain messages from all other users. We propose a novel user pairing scheme, which is based on the principle of selecting a common user with the best average channel gain. This allows the user with the best channel conditions to contribute to the overall system performance. Assuming lattice code based transmissions, we derive upper bounds on the average common rate and the average sum rate with the proposed pairing scheme. Considering MM-ary quadrature amplitude modulation with square constellation as a special case of lattice code transmission, we derive asymptotic average symbol error rate (SER) of the MWRN. We show that in terms of the achievable rates, the proposed pairing scheme outperforms the existing pairing schemes under a wide range of channel scenarios. The proposed pairing scheme also has lower average SER compared to existing schemes. We show that overall, the MWRN performance with the proposed pairing scheme is more robust, compared to existing pairing schemes, especially under worst case channel conditions when majority of users have poor average channel gains.
Language eng
DOI 10.1016/j.phycom.2015.08.009
Field of Research 100510 Wireless Communications
Socio Economic Objective 890199 Communication Networks and Services not elsewhere classified
HERDC Research category C1.1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2015, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30089408

Document type: Journal Article
Collection: School of Engineering
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