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The majority of the errors in cellular and PCS-based wireless location systems happen due to the effect of non-line-of-sight (NLOS) propagation. In order to minimize the location estimation error to mitigate the NLOS effect under such conditions, we propose a simplified location technique for urban areas. The algorithm is based on an optimization of a set of nonlinear equations with inequality constraints. Simulation results over different urban schemes show that the algorithm provides considerable improvement over traditional location algorithms.
Vehicular Technology Conference, 2004. VTC2004-Fall. 2004 IEEE 60th (Volume:7 )
Date of Conference: 26-29 Sept. 2004