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SER analysis of multi-way relay networks with M-QAM modulation in the presence of imperfect channel estimation

Islam, Shama N, Durrani, Salman and Sadeghi, Parastoo 2016, SER analysis of multi-way relay networks with M-QAM modulation in the presence of imperfect channel estimation, Journal of communications and networks, vol. 18, no. 5, pp. 677-687.

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Title SER analysis of multi-way relay networks with M-QAM modulation in the presence of imperfect channel estimation
Author(s) Islam, Shama N
Durrani, Salman
Sadeghi, Parastoo
Journal name Journal of communications and networks
Volume number 18
Issue number 5
Start page 677
End page 687
Total pages 11
Publisher Institute of Electrical and Electronics Engineers
Place of publication Piscataway, N.J.
Publication date 2016-10
ISSN 1229-2370
1976-5541
Keyword(s) channel estimation
functional decode and forward (FDF)
lattice codes
multi-way relay network (MWRN)
symbol error rate (SER)
Summary Multi-way relay networks (MWRNs) allow multiple users to exchange information with each other through a single relay terminal. MWRNs are often incorporated with capacity achieving lattice codes to enable the benefits of high-rate signal constellations to be extracted. In this paper, we analytically characterize the symbol error rate (SER) performance of a functional decode and forward (FDF) MWRN in the presence of channel estimation errors. Considering Μ-ary quadrature amplitude modulation(QAM) with square constellations as an important special case of lattice codes, we obtain asymptotic expressions for the average SER for a user in FDF MWRN. The accuracy of the analysis at high signal-to-noise ratio is validated by comparison with the simulation results. The analysis shows that when a user decodes other users with better channel conditions than itself, the decoding user experiences better error performance. The analytical results allow system designers to accurately assess the non-trivial impact of channel estimation errors and the users’ channel conditions on the SER performance of a FDF MWRN with M-QAM modulation.
Language eng
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, KICS
Persistent URL http://hdl.handle.net/10536/DRO/DU:30089419

Document type: Journal Article
Collection: School of Engineering
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