The Measurement of Frequency Dependent Path Loss in Residential LOS Environments using Time Domain UWB Channel Sounding

摘要

Future ultra wide-band (UWB) systems will probably use bandwidths exceeding 1GHz to achieve the data rates necessary for wireless video streaming and rapid file transfer. It is therefore essential to consider how propagation losses vary as a function of frequency, especially because the dynamic range of commercial UWB receivers is limited by the analogue-to-digital converter (ADC). This paper characterizes the line-of-sight (LOS) frequency dependent path losses encountered in a residential environment using a prototype UWB time domain channel sounder. Importantly, results show that the frequency dependent path loss exponent varies as much over small areas (0.1m{sup}2), as it does over widely spaced areas.