Channel Estimation for Relay-Based M2M Two-Way Communications Using Expectation-Maximization
Joint Authors
Guan, Wenyang
Chen, Chen
Xu, Xiaoyan
Wu, Jianjun
Xiang, Haige
Source
International Journal of Distributed Sensor Networks
Issue
Vol. 2013, Issue - (31 Dec. 2013), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2013-12-15
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Telecommunications Engineering
Information Technology and Computer Science
Abstract EN
The growing popularity of machine-to-machine (M2M) communications in wireless networks is driving the need to update the corresponding receiver technology based on the characteristics of M2M.
In this paper, an expectation-maximization-based maximum likelihood cascaded channel estimation method is developed for relay-based M2M two-way communications.
As the closed-form solution of maximum likelihood channel estimation does not exist, and the superimposed signal structure at the receiver is conducive to the expectation-maximization application, the expectation-maximization algorithm is utilized to provide the maximum likelihood solution in the presence of unobserved data through stable iterations.
Even in the absence of the training sequence, the cascaded channel estimates are obtained through the expectation-maximization iterations.
The Bayesian Cramér-Rao lower bounds are derived under random parameters for the channel estimation, and the simulation demonstrates the validity of the proposed studies.
American Psychological Association (APA)
Xu, Xiaoyan& Wu, Jianjun& Chen, Chen& Guan, Wenyang& Xiang, Haige. 2013. Channel Estimation for Relay-Based M2M Two-Way Communications Using Expectation-Maximization. International Journal of Distributed Sensor Networks،Vol. 2013, no. -, pp.1-11.
https://search.emarefa.net/detail/BIM-489637
Modern Language Association (MLA)
Xu, Xiaoyan…[et al.]. Channel Estimation for Relay-Based M2M Two-Way Communications Using Expectation-Maximization. International Journal of Distributed Sensor Networks Vol. 2013, pp.1-11.
https://search.emarefa.net/detail/BIM-489637
American Medical Association (AMA)
Xu, Xiaoyan& Wu, Jianjun& Chen, Chen& Guan, Wenyang& Xiang, Haige. Channel Estimation for Relay-Based M2M Two-Way Communications Using Expectation-Maximization. International Journal of Distributed Sensor Networks. 2013. Vol. 2013, no. -, pp.1-11.
https://search.emarefa.net/detail/BIM-489637
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-489637