Experimental Characterization of Signal Fades in Indoor Low-Power Wireless System

Abstract

We perform statistical characterization of the wireless channel between the low-power transmitter and the receiver moving along the straight path in laboratory conditions. Our aim is to process the measurement results of the signal level variations and propose a model of fading suitable for analytical analysis. In addition, we will determine the appropriate parameter values for the proposed model that describes the statistics of signal intensity with random changes. Based on the measured values, in addition to the first order statistical characteristics, we will determine the second order characteristics, such as level crossing rate and average fade duration. These values are important in estimating the probability of error and ergodic capacity, as well as in the adequate design of the interleaver and error-correction codes.