Phase synchronization for distributed sensor networks in feedback bit errors

No Thumbnail Available
Authors
Wu, Haijie
Ding, Yanwu
Kwon, Hyuck M.
Issue Date
2010-06-25
Type
Conference paper
Language
en_US
Keywords
Algorithm design and analysis , Base stations , Bismuth , Computer errors , Convergence , Frequency synchronization , Noise robustness , Phase noise , State feedback , Uncertainty
Research Projects
Organizational Units
Journal Issue
Alternative Title
Abstract

It has been reported recently that phase synchronization in distributed sensor networks can be achieved by adjusting the phase in sensors randomly with a single bit feedback from the receiver (base station) to the sensors. It has been shown that such algorithm leads asymptotic phase coherence with probability one for a broad class of distributions for the random phase adjustments. However, the effects of errors in the feedback bit and phase noise/uncertainty at the sensors were not explored in the algorithm. In this paper, we design a synchronization algorithm with the presence of communication errors in the feedback bit and phase noise at the sensors. Each sensor adaptively adjusts the phase by random phase perturbations by two stages. The first stage, the phase is adjusted according the best received signal strength available; and in the second stage, the adjusting is based on the previous received signal. By alternating between these two stages, the convergence is guaranteed and robust to the feedback bit errors. The convergence time is roughly linear in the number of sensors. Simulations have shown that the proposed algorithm provides satisfactory performance with the feedback bit errors and phase noise at the sensors.

Description
The full text of this article is not available on SOAR. WSU users can access the article via IEEE Xplore database licensed by University Libraries: http://libcat.wichita.edu/vwebv/holdingsInfo?bibId=1045954
Citation
Haijie Wu; Yanwu Ding; Kwon, Hyuck M.; , "Phase synchronization for distributed sensor networks in feedback bit errors," Wireless Communications, Networking and Information Security (WCNIS), 2010 IEEE International Conference on , vol., no., pp.282-286, 2
Publisher
IEEE
License
Journal
Volume
Issue
PubMed ID
DOI
ISSN
EISSN