Title :
Processing-aware compression for sensor networks
Author :
Vasudevan, Lavanya ; Ortega, Antonio
Author_Institution :
Integrated Media Syst. Center, Univ. of Southern California, Los Angeles, CA, USA
Abstract :
In sensor networks, where power and bandwidth are at a premium, there is a clear need to use compression to limit the amount of information exchanged by the sensors. We study the signal compression problem in situations where signals are being processed for the purpose of source localization. In these scenarios, compression should be optimized for the accuracy of source localization, rather than to provide a reproduction of the signals with some desired fidelity. We show how this leads to novel design techniques that have clear advantages over standard quantizer design approaches.
Keywords :
distributed sensors; quantisation (signal); sensor fusion; source coding; distributed source coding; quantizer design; sensor data compression; sensor fusion; sensor networks; signal compression; source localization; Bandwidth; Delay effects; Delay estimation; Image coding; Image sensors; Position measurement; Quantization; Sensor fusion; Sensor systems; Signal processing;
Conference_Titel :
Sensor Array and Multichannel Signal Processing Workshop Proceedings, 2002
Print_ISBN :
0-7803-7551-3
DOI :
10.1109/SAM.2002.1191036