Spread Spectrum Visual Sensor Network Resource Management Using an End-to-End Cross-Layer Design
Abstract
In this paper, we propose an approach to manage network resources for a direct sequence code division multiple access (DSCDMA) visual sensor network where nodes monitor scenes with varying levels of motion. It uses cross-layer optimization across the physical layer, the link layer, and the application layer. Our technique simultaneously assigns a source coding rate, a channel coding rate, and a power level to all nodes in the network based on one of two criteria that maximize the quality of video of the entire network as a whole, subject to a constraint on the total chip rate. One criterion results in the minimal average end-to-end distortion amongst all nodes, while the other criterion minimizes the maximum distortion of the network. Our experimental results demonstrate the effectiveness of the cross-layer optimization.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 2011
- Accession Number
- ADA562488
Entities
People
- Bruce W. Suter
- Elizabeth S. Bentley
- John D. Matyjas
- Lisimachos P. Kondi
- Michael J. Medley
Organizations
- University at Buffalo