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Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/714

Title: Source extraction in bandwidth constrained wireless sensor networks
Authors: Chen, Hongbin
Tse, C. K. Michael
Feng, Jiuchao
Subjects: Blind source extraction
Distributed estimation
Wireless sensor network
Issue Date: Sep-2008
Publisher: IEEE
Citation: IEEE transactions on circuits and systems. II, Express briefs, Sept. 2008, v. 55, no. 9, p. 947-951.
Abstract: Source extraction was traditionally done by sensor arrays. Recently, sensor networks have been considered as promising candidates for extraction of multiple sources. In a sensor network, each sensor observes an instantaneous linear mixture of the sources and their observations are corrupted by additive white Gaussian noise. Two sensor network models are adopted. The first one is cluster based, in which a sensor acts as cluster head and performs local extraction of the sources based on its own observation and the received quantized data from the cluster members. Then, the extracted signal is quantized and the quantized data are sent to the sink while the sink performs global extraction of the sources. The other one is cluster free, in which data collected by the sensors are quantized and sent to the sink directly. Then, the sink performs global extraction of the sources. The proposed schemes are evaluated against the benchmarking case where the sensor observations are undistorted.
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This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holders.
Type: Journal/Magazine Article
URI: http://hdl.handle.net/10397/714
ISSN: 15497747
Appears in Collections:EIE Journal/Magazine Articles

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