کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
449329 693661 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Performance evaluation of source extraction in wireless sensor networks
موضوعات مرتبط
مهندسی و علوم پایه مهندسی کامپیوتر شبکه های کامپیوتری و ارتباطات
پیش نمایش صفحه اول مقاله
Performance evaluation of source extraction in wireless sensor networks
چکیده انگلیسی

In this paper, the performance of source extraction in bandwidth constrained wireless sensor networks are evaluated. The sensor observations are assumed to be linear instantaneous mixtures of the sources in a sensing field. Two sensor network models are adopted, namely, cluster-based and cluster-free. In cluster-based sensor networks, the cluster members quantize their observations and send the quantized data to the cluster head. Then, the cluster head performs local source extraction, quantizes the extracted signal, and sends the quantized data to the sink. Finally, the sink performs global source extraction. Both single-cluster and multi-cluster cases are considered. In cluster-free sensor networks, all sensors quantize their observations and send the quantized data to the sink. Then, the sink performs global source extraction. The results show that sources can be effectively extracted in both kinds of sensor networks. The performance of source extraction in sensor networks is comparable to that of the benchmarking case where the sensor observations are perfectly gathered at the sink. The impact of the mixing matrix and the amount of available observations on the performance are also discussed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Computer Communications - Volume 31, Issue 16, 25 October 2008, Pages 3870–3875
نویسندگان
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