A novel TOA estimation method of broadband signal propagation in outdoor environment

In high-speed wireless data transmission, severe frequency-selective fading of a multipath channel causes inter-symbol interference (ISI) and leads to a significant problem in the system. To ease the problem, precise modeling of the multipath time-of-arrival (TOA) is important and needed. In this paper, a novel method, based on Turin's /spl Delta/-K model, is proposed to estimate the TOA of a broadband signal through the measured result of a narrow band signal in outdoor environments. Our method has been validated by the measurement result of 1.95 GHz and 2.44 GHz radio propagation in metropolitan and suburban areas. The TOA of a 120 MHz bandwidth signal can be effectively predicted by using our method with the measured results of a 15 MHz bandwidth signal.