Title
Online modulation classification with multiple receivers under unknown symbol timing and flat fading
Abstract
Likelihood based techniques present a viable approach to modulation classification (MC) since they are based on sound probabilistic models for the transmitted signal and the channel. However, as more uncertainties are taken into account in these models, they begin to suffer from increased computational complexity and memory requirements due to parameter estimation. In this paper, we propose an online MC technique based on Titterington’s expectation–maximization algorithm and apply it to centralized and distributed networks of multiple receivers that operate under unknown independent flat-block fading and symbol timing uncertainty. Compared to existing methods that yield high classification accuracy based on batch processing of the data, simulation results indicate that our sequential algorithm delivers comparable performance without the need to oversample the waveforms intercepted by the receivers.
Year
DOI
Venue
2022
10.1016/j.phycom.2022.101787
Physical Communication
Keywords
DocType
Volume
Asynchronous modulation classification,Online expectation–maximization,Block-fading,Symbol timing,Distributed network
Journal
54
ISSN
Citations 
PageRank 
1874-4907
0
0.34
References 
Authors
0
2
Name
Order
Citations
PageRank
Emre Efendi100.34
Berkan Dulek210713.74