UWB Channel Model Report

An extensive measurement campaign has been carried out in the 4th floor of the Electronic Engineering Department of the University of Rome Tor Vergata. The measurement plan was described in the report numbered W03-02-0011-R03, available on the ULTRAWAVES private website. In this document we describe the first measurement campaign based on the use of the preliminary DVP purchased from Wisair. Such a campaign is based on time domain measurements. As stated in our original measurement plan, we tried two different techniques to sound the channel: - first by pulses - then by PN-sequences We compared the channel responses obtained by the two techniques. The PN-sequence channel sounding gave the best performance, and then we decided to base our measurement campaign on this channel sounding technique. We will show the channel impulse response by PN-sequence sounding (actually some post-processing must be applied to the raw data obtained by this technique to get the impulse response). The channel measurements were done in many rooms. The transmitter was moved in four different positions in the corridor. The receiver was moved in many different positions, so that the large scale and small-scale effects were evidenced. Also measurements in line-of-sight and nonline-of-sight conditions were made.