Resource-Constrained Signal Processing in Sensor Networks

Resource - Constrained Signal Processing

T he primary design objective of computing and communication systems has been performance: the speed of signal processing, the rate of communications, and the optimization of quality of service. For wireless systems and networks deployed on a large scale and untethered to power sources, practical considerations dictate a dif ferent design regime, one that should be dominated by energy and bandw...

Efficient Image Processing in Resource-constrained Visual Sensor Networks

Visual sensor networks (VSNs) that employ content-rich 2-D images or image sequences as the basic media have been evolving rapidly in recent years. Besides the critical resource constraints that are already inherent in any micro-sensor networks, the development of VSNs also faces challenges from device design, image transmission, and onboard image processing, among which efficient onboard proce...

Acoustic Ranging in Resource-Constrained Sensor Networks

Fine-grained geographic localization of nodes is essential for an extensive range of distributed sensor applications. To compute geographic coordinates, localization algorithms commonly use pair-wise distance estimates between nodes. In this paper we present a noise tolerant acoustic ranging mechanism for wireless sensors that employs digital signal processing techniques on standard MICA hardwa...

Distributed Signal Processing in Wireless Sensor Networks

6.1 The Problem of Distributed Detection and Data Fusion . . . . . . . . . . . . . . . . . . . . . . . . . .142 6.2 Fusion Architectures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .143 6.3 Recent Advances in Distributed Detection/Estimation in Resource-Constrained Wireless Sensor Networks . . . . . . . . . . . . ....

Distributed Signal Processing in Wireless Sensor Networks