NDLI: A Joint Fusion, Power Allocation and Delay Optimization Approach for Wireless Sensor Networks

Content Provider	IEEE Xplore Digital Library
Author	Mingdong Xu Leung, H.
Copyright Year	2001
Abstract	In this paper, we consider the cross-layer optimization of wireless sensor networks (WSNs) under the constraints of total energy consumption and transmission delay. A Gaussian WSN with time division multiple access (TDMA) media access control (MAC) layer protocol is used here. The sensed data are contaminated by sensor noise, before converting to digital bits by quantization. The digital bits are transmitted through a noisy wireless communication channel. In fusing the sensed information from individual sensors, a fusion rule is employed to recover the original data. Least square error (LSE) rule is considered here due to its low computation complexity. The mean distortion level is employed to measure the system performance. Since the battery life is limited and the data delay is crucial, we propose here to optimize the transmission power allocation strategy and the delay of each node in order to minimize the mean distortion of the measured information. Using computer simulations, the proposed adaptive approach is shown to provide an effective sensing in terms of performance and energy consumption.
Sponsorship	IEEE Sensors Council
Starting Page	737
Ending Page	744
Page Count	8
File Size	744522
File Format	PDF
ISSN	1530437X
Volume Number	11
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-03-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Wireless sensor networks Delay Energy consumption Optimization Time division multiple access Protocols Data communication optimization Data fusion delay energy consumption TDMA wireless sensor network
Content Type	Text
Resource Type	Article
Subject	Instrumentation Electrical and Electronic Engineering

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