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NETWORK
2006
177views more  NETWORK 2006»
13 years 7 months ago
Jamming sensor networks: attack and defense strategies
Wireless sensor networks are built upon a shared medium that makes it easy for adversaries to conduct radio interference, or jamming, attacks that effectively cause a denial of se...
Wenyuan Xu, Ke Ma, Wade Trappe, Yanyong Zhang
JSAC
2011
185views more  JSAC 2011»
13 years 2 months ago
Joint Dynamic Resource Allocation and Waveform Adaptation for Cognitive Networks
This paper investigates the issue of dynamic resource allocation (DRA) in the context of multiuser cognitive radio networks. We present a general framework adopting generalized si...
Zhi Tian, Geert Leus, Vincenzo Lottici
ICASSP
2008
IEEE
14 years 1 months ago
Optimized distributed 2D transforms for irregularly sampled sensor network grids using wavelet lifting
We address the design and optimization of an energy-efficient lifting-based 2D transform for wireless sensor networks with irregular spatial sampling. The 2D transform is designe...
Godwin Shen, Antonio Ortega
GLOBECOM
2007
IEEE
14 years 1 months ago
Implementing an Experimental Cognitive Radio System for DySPAN
— Motorola Labs implemented an experimental cognitive radio system for use at the Dynamic Spectrum Access Networks (DySPAN) Symposium 2007. To exercise a practical communication ...
David Taubenheim, Wayne Chiou, Neiyer S. Correal, ...
DFT
2004
IEEE
174views VLSI» more  DFT 2004»
13 years 11 months ago
Defect Avoidance in a 3-D Heterogeneous Sensor
A 3D Heterogeneous Sensor using a stacked chip is investigated. Optical Active Pixel Sensor and IR Bolometer detectors are combined to create a multispectral pixel for aligned col...
Glenn H. Chapman, Vijay K. Jain, Shekhar Bhansali