Publica
Hier finden Sie wissenschaftliche Publikationen aus den FraunhoferInstituten. Energyefficient node selection for cooperative spectrum sensing with spatial correlation
 Matthews, M.B. ; Naval Postgraduate School NPS, Monterey/Calif.; IEEE Signal Processing Society: Asilomar Conference on Signals, Systems and Computers 2013. Vol.2 : Pacific Grove, California, USA, 3  6 November 2013 Piscataway, NJ: IEEE, 2013 ISBN: 9781479923915 ISBN: 9781479923908 ISBN: 9781479923885 (Print) pp.10111015 
 Asilomar Conference on Signals, Systems and Computers <47, 2013, Pacific Grove/Calif.> 

 English 
 Conference Paper 
 Fraunhofer HHI () 
Abstract
In this paper we investigate the node placement for a wireless sensor network deployed to sense the spectrum with spatial channel correlation. The goal is to find the best node constellation, such that the given power constraints are satisfied and the best sensing performance is acquired. We derive the analytical expression for probability of detection (PD) of the optimal test statistic as the measure of performance. Then we develop two heuristic methods to solve the nonconvex optimization problem. Using numerical simulations the analytical expressions for PD is justified, as well as, the performance of the two proposed suboptimal approaches.