Title
Priority-based cross-layer optimization for multihop DS-CDMA Visual Sensor Networks.
Abstract
We propose a novel priority-based approach that enables the optimal control of the transmission power and the use of the available network resources of a multihop Direct Sequence Code Division Multiple Access (DS-CDMA) Wireless Visual Sensor Network (WVSN). The WVSN nodes can either monitor different scenes (source nodes) or retransmit videos of other nodes (relay nodes). Moreover, in real environments the source nodes monitor different scenes that may be of dissimilar importance. Hence a higher end-to-end quality is demanded for those nodes that are assigned a higher priority. Overall, each node has different power and resource requirements, and therefore a global optimization approach is required. For the purpose of enhancing the delivered video quality of the source nodes with respect to their priorities, we define and suggest the use of priority-based optimization criteria. Experimental results that assess the proposed approach are provided and conclusions are drawn.
Year
DOI
Venue
2012
10.1109/ICIP.2012.6467056
ICIP
Keywords
Field
DocType
code division multiple access,image enhancement,optimisation,spread spectrum communication,video signal processing,wireless sensor networks,DS-CDMA,WVSN nodes,global optimization approach,higher end-to-end quality,multihop DS-CDMA visual sensor networks,multihop direct sequence code division multiple access,priority-based cross-layer optimization approach,priority-based optimization criteria,source nodes,transmission power optimal control,video quality enhancement,wireless visual sensor network,Cross-Layer Resource Allocation,DS-CDMA,Multihop Wireless Visual Sensor Network,Prioritization
Key distribution in wireless sensor networks,Cross-layer optimization,Wireless,Global optimization,Computer science,Visual sensor network,Computer network,Real-time computing,Mobile wireless sensor network,Video quality,Wireless sensor network
Conference
ISSN
Citations 
PageRank 
1522-4880
4
0.40
References 
Authors
6
5