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Achievable rate and error performance of an amplify and forward multi-way relay network in the presence of imperfect channel estimation

Islam, Shama Naz 2016, Achievable rate and error performance of an amplify and forward multi-way relay network in the presence of imperfect channel estimation, IET communications, vol. 10, no. 3, pp. 272-282, doi: 10.1049/iet-com.2015.0484.

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Title Achievable rate and error performance of an amplify and forward multi-way relay network in the presence of imperfect channel estimation
Author(s) Islam, Shama Naz
Journal name IET communications
Volume number 10
Issue number 3
Start page 272
End page 282
Total pages 11
Publisher Institution of Engineering and Technology
Place of publication Stevenage, Eng.
Publication date 2016-02
ISSN 1751-8628
1751-8636
Summary In this paper, we investigate the impact of channel estimation error on the achievable common rate and error performance of amplify and forward (AF) multi-way relay networks (MWRNs). Assuming lattice codes with large dimensions, we provide the analytical expressions for the end-to-end SNR at the users and obtain upper bounds on the achievable common rate for an AF MWRN. Moreover, considering binary phase shift keying (BPSK) modulation as the simplest case of lattice codes, we obtain the average bit error rate (BER) for a user in an AF MWRN. The analysis shows that the average BER is a linearly increasing function and the achievable common rate is a linearly decreasing function of the channel estimation error. On the other hand, the average BER decreases and the achievable common rate increases with increasing correlation between the true and the estimated channel. Also, we observe that the AFprotocol is robust against increasing number of users in terms of error performance. We show that when the decoding user has better channel conditions compared to other users, AF relaying gives a better error performance and common rate. Finally, simulation results are provided to verify the validity of our analysis.
Language eng
DOI 10.1049/iet-com.2015.0484
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 ©2016, The Institution of Engineering and Technology
Persistent URL http://hdl.handle.net/10536/DRO/DU:30089417

Document type: Journal Article
Collection: School of Engineering
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