Parking Garage Channel Characteristics at 5 GHz for V2V Applications

• Published in: 2013 IEEE 78th Vehicular Technology Conference (VTC Fall) pp. 1 - 5
• Main Authors: Ruoyu Sun, Matolak, David W., Pengyu Liu
• Format: Conference Proceeding
• Language: English
• Published: IEEE 01.09.2013
• Subjects: Antenna measurements; Delays; Floors; Loss measurement; Propagation losses
• ISSN: 1090-3038
• DOI: 10.1109/VTCFall.2013.6692343

We provide results for propagation path loss and root-mean-square delay spread within a parking garage, in the 5 GHz band, aimed at V2V applications. Results for both same-floor, and floor-to-floor propagation are shown for a typical urban parking garage structure. For line-of-sight (LOS) conditions, same-floor propagation path loss is well approximated by a 2-ray model. Same-floor non-LOS path loss shows path loss exponent n-3. Path loss for the floor-to-floor case can be well-modeled by accounting for floor attenuation factors and an additional loss that represents distance of the mobile toward the garage interior, away from the garage's open sides, i.e., a model that accounts for both vertical and horizontal distance. Mean delay spreads reach nearly 150 ns for the same-floor case, and reduce to ~50 ns for the longest (3-floor) distance floor-to-floor case. Since there have been few results for such environments previously published, our results should prove useful for V2V systems deployed in parking garages.