NDLI: Distributed transmit beamforming via feedback-based inter-cluster synchronization

Content Provider	IEEE Xplore Digital Library
Author	Jian Hou Gangfeng Yan Zhiyun Lin Wenyuan Xu
Copyright Year	2012
Description	Author affiliation: College of Electrical Engineering, Zhejiang University, Hangzhou 310027, China (Jian Hou; Gangfeng Yan; Zhiyun Lin) \|\| Department of Computer Science and Engineering, University of South Carolina, Columbia, 29208, USC, USA (Wenyuan Xu)
Abstract	This paper focuses on the problem of achieving optimal transmit beamforming for a collection of wireless sensors. The objective is to design distributed algorithms running on each sensor (each carrying an antenna) such that the signals from all sensors combine constructively at the receiver end and thus, the received power is increased. Towards this goal, we propose two algorithms that are applicable to two types of sensor setups: Taking Turn Distributed Beamforming (TT-DB) for sensors with partial global knowledge and Random Grouping Distributed Beamforming (RG-DB) for sensors with no global knowledge. Both algorithms are iterative whereby each sensor adjusts its phase offset without directly communicating with each other. In each iteration, either one sensor or a subset of sensors are selected and then transmit the signals that are carefully crafted based on the SNR feedback from the receiver end. We have proved that guided by either algorithm, the signals from all sensor nodes converge to perfect phase coherence asymptotically, and our simulation results have shown that the convergence steps of both algorithms are linear with respect to the number of sensor nodes in the group.
Starting Page	1392
Ending Page	1397
File Size	181138
Page Count	6
File Format	PDF
ISBN	9781467320658
ISSN	07431546
e-ISBN	9781467320665
e-ISBN	9781467320641
DOI	10.1109/CDC.2012.6425863
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2012-12-10
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Receivers Array signal processing Signal to noise ratio Synchronization Partitioning algorithms Algorithm design and analysis Convergence optimization Beamforming distributed sensors cooperative communication
Content Type	Text
Resource Type	Article
Subject	Control and Optimization Control and Systems Engineering Modeling and Simulation

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3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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