Paper Info
Title
SER analysis of multi-way relay networks with M-QAM modulation in the presence of imperfect channel estimation.
Abstract
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 M-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 withM-QAM modulation.
Year
DOI
Venue
2016
10.1109/JCN.2016.000098
JOURNAL OF COMMUNICATIONS AND NETWORKS
Keywords
Field
DocType
Channel estimation,functional decode and forward (FDF),lattice codes,multi-way relay network (MWRN),symbol error rate (SER)
Quadrature amplitude modulation,Expression (mathematics),Computer science,QAM,Communication channel,Algorithm,Theoretical computer science,Modulation,Real-time computing,Decoding methods,Relay,Decodes
Journal
Volume
Issue
ISSN
18
5
1229-2370
Citations 
PageRank 
References 
2
0.36
27
Authors
3
Name
Order
Citations
PageRank
Shama N. Islam1416.50
Salman Durrani2121771.37
Parastoo Sadeghi364866.68