Un método para la separación del desvanecimiento a corto y largo plazo en comunicaciones vehiculares

Abstract

[EN] In this contribution, we present a method for estimating the optimal size of moving average filter to ensure a precise separation of small and large scale fading effects. The analysis of small and large scale fading of the Vehicle-to-Vehicle (V2V) measured channel has been performed from narrowband channel measurements carried out in an urban environment at 5.9 GHz. Uniform intervals, where the channel process can be considered stationary, have been identified by comparing the cumulative distribution function (CDF) of the received envelope. A relationship between the length of the uniform intervals and the velocity of vehicles has been found. Moreover, the Rice K factor has been estimated for each one of these intervals. Our results showed that the proposed method is adequate to carry out a small and large scale fading separation. The results obtained make its use interesting to process correctly measured data in vehicular environments.