Wideband measurements of angle and delay dispersion for outdoor and indoor peer-to-peer radio channels at 1920 MHz

© 2003 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.DOI: 10.1109/TAP.2003.811494This paper presents spatio-temporal measurements for the peer-to-peer radio channel at a center frequency of 1920 MHz with 140 MHz of radio-frequency bandwidth. The measurements were taken using a spread-spectrum channel sounder and an automated spatial probing system that uses precise computer- controlled positioning and orientation of omnidirectional and directional (30° beamwidth) antennas to measure both the angles-of-arrival and time-delays of multipath components. Transmitter-receiver configurations included six outdoor-to-outdoor cross-campus locations at Virginia Polytechnic Institute and State University (17–219 ns rms delay spread, 0.36–0.91 angular spread—using the unitless definition of angular spread defined in [1]), three outdoor-to-indoor locations (27–34 ns rms delay spread, 0.78–0.98 angular spread), and three indoor-to-indoor locations (29–45 ns rms delay spread, 0.73–0.90 angular spread). The paper also quantitatively describes a trend that shows how angular spread increases with increasing delay spread