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https://hdl.handle.net/2142/46976
Description
Title
Energy Aware Cascaded Detector System
Author(s)
Le, Long N.T.
Contributor(s)
Jones, Douglas L.
Issue Date
2010-12
Keyword(s)
detectors
energy-aware detectors
cascaded detectors
low-power systems
energy efficient systems
Abstract
In ultra-low-power systems, energy eff ciency is an important factor. As a
result, these systems require techniques to balance between energy consumption
and performance. In order to address that, we develop an optimized
energy-aware, cascaded detector system for general-purpose detection application. The developed system solves a modified Neyman-Pearson optimization
criterion using a Lagrangian multiplier approach with logarithmic
transformation. It then uses this solution to systematically set the optimum
operating point of the cascade with the help of the Constant False Alarm Rate
(CFAR) method. According to Octave simulation results and experimental
results from a real-time system implementation, we confirm that our system
can meet the required energy constraint and achieve good performance even
in noisy environments.
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