Blind estimation of transmit-power for multiple wireless sources

Received power measurements at spatially distributed, passive, monitors contain valuable information on the active wireless transmitters, which can be usefully exploited to make various inferences. In this paper, we study blind estimation of the number of active wireless sources, their transmission powers and their locations in the network based on received power measurements at multiple monitoring nodes, without assuming any prior knowledge or statistical characterization of these parameters. Utilizing geometrical analysis and algorithmic approach we present estimation algorithms for these parameters under signal combination from multiple transmitters. We present useful non-trivial insights regarding such inferences, and also present simulation results verifying the analysis and quantifying the performance of the estimation algorithms. ©2008 IEEE.