Cooperative Transmission in Mobile Wireless Sensor Networks with Multiple Carrier Frequency Offsets : A Double-Differential Approach
Joint Authors
Zhang, Bangning
Zhao, Kun
Pan, Kegang
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-13, 13 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-04-03
Country of Publication
Egypt
No. of Pages
13
Main Subjects
Abstract EN
As a result of the rapidly increasing mobility of sensor nodes, mobile wireless sensor networks (MWSNs) would be subject to multiple carrier frequency offsets (MCFOs), which result in time-varying channels and drastically degrade the network performance.
To enhance the performance of such MWSNs, we propose a relay selection (RS) based double-differential (DD) cooperative transmission scheme, termed RSDDCT, in which the best relay sensor node is selected to forward the source sensor node’s signals to the destination sensor node with the detect-and-forward (DetF) protocol.
Assuming a Rayleigh fading environment, first, exact closed-form expressions for the outage probability and average bit error rate (BER) of the RSDDCT scheme are derived.
Then, simple and informative asymptotic outage probability and average BER expressions at the large signal-to-noise ratio (SNR) regime are presented, which reveal that the RSDDCT scheme can achieve full diversity.
Furthermore, the optimum power allocation strategy in terms of minimizing the average BER is investigated, and simple analytical solutions are obtained.
Simulation results demonstrate that the proposed RSDDCT scheme can achieve excellent performance over fading channels in the presence of unknown random MCFOs.
It is also shown that the proposed optimum power allocation strategy offers substantial average BER performance improvement over the equal power allocation strategy.
American Psychological Association (APA)
Zhao, Kun& Pan, Kegang& Zhang, Bangning. 2014. Cooperative Transmission in Mobile Wireless Sensor Networks with Multiple Carrier Frequency Offsets : A Double-Differential Approach. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-503552
Modern Language Association (MLA)
Zhao, Kun…[et al.]. Cooperative Transmission in Mobile Wireless Sensor Networks with Multiple Carrier Frequency Offsets : A Double-Differential Approach. Mathematical Problems in Engineering No. 2014 (2014), pp.1-13.
https://search.emarefa.net/detail/BIM-503552
American Medical Association (AMA)
Zhao, Kun& Pan, Kegang& Zhang, Bangning. Cooperative Transmission in Mobile Wireless Sensor Networks with Multiple Carrier Frequency Offsets : A Double-Differential Approach. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-13.
https://search.emarefa.net/detail/BIM-503552
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-503552