Impact of measurement configurations on the accuracy of propagation model estimation with applications to Dynamic Spectrum Access

In this paper we investigate the possibility of using measurement-based propagation models in the framework of Dynamic Spectrum Access (DSA), where secondary users can opportunistically access the licensed spectrum of a primary system. In principle this will provide a precise representation of the radio environment since it takes into account all environmental details at a given period of time. However the accuracy of the estimated models will depend on sensor density, propagation factors, and any external error. We study the impact of these factors on the accuracy of the estimated model and the satisfaction of primary and secondary networks.We also propose a guideline to overcome these problems in DSA scenarios by using a power margin.