| Paper: | SS-4.5 | ||
| Session: | Signal Processing for Wireless Sensor Networks I | ||
| Time: | Wednesday, May 19, 10:50 - 11:10 | ||
| Presentation: | Special Session Lecture | ||
| Topic: | Special Sessions: Signal Processing for Wireless Sensor Networks | ||
| Title: | TO COOPERATE OR NOT TO COOPERATE: DETECTION STRATEGIES IN SENSOR NETWORKS | ||
| Authors: | Michael A. Lexa; Rice University | ||
| Christopher J. Rozell; Rice University | |||
| Sinan Sinanović; Rice University | |||
| Don H. Johnson; Rice University | |||
| Abstract: | This paper is an initial investigation into the following question: Can cooperation among sensors in a sensor network improve detection performance in a simple hypothesis test? We analyze a simple cooperative system using the Kullback-Leibler(KL) discrimination distance and a quantity known as the information transfer ratio which is a ratio of KL distances. We discover that, asymptotically, gain over a non-cooperative system depends on the conditional KL distance. We conclude with an illustrative example which demonstrates that cooperation not only significantly improves performance but can also degrade it. | ||
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