Title
Symbol Timing Estimation for Physical-Layer Network Coding
Abstract
Recently, physical-layer network coding (PNC) attracts much attention due to its ability to double the throughput in relay-aided communications. However, most research in PNC assumes that the symbol timings of the end nodes are ideally aligned. In fact, they have to be recovered accurately at the relay. In this letter, we present a novel symbol timing error estimator for PNC. It is shown that accurate error estimates can be obtained by the interpolation algorithm based on a small-size Discrete Fourier Transformation (DFT). The Mean Square Error (MSE) performance is one order of magnitude better than that of the conventional maximum likelihood based optimum sample (OS) algorithm for signal-to-noise ratio (SNR) greater than 10 dB.
Year
DOI
Venue
2015
10.1109/LCOMM.2015.2412931
Communications Letters, IEEE  
Keywords
Field
DocType
Timing,Relays,Training,Interpolation,Network coding,Bandwidth,Mean square error methods
Linear network coding,Computer science,Interpolation,Algorithm,Mean squared error,Real-time computing,Bandwidth (signal processing),Throughput,Discrete Fourier transform,Statistics,Relay,Estimator
Journal
Volume
Issue
ISSN
PP
99
1089-7798
Citations 
PageRank 
References 
6
0.53
7
Authors
3
Name
Order
Citations
PageRank
Xiaoyu Dang13810.69
Qiang Li2484.59
Xiangbin Yu317039.05