Messier, GeoffreyWasson, Michael William2015-12-222015-12-222015-12-222015http://hdl.handle.net/11023/2692This thesis presents a wireless propagation channel model for the below-rooftop dense urban environment based on empirical measurements conducted in the downtown core of Calgary, Alberta. The measurements characterize a 2x1 multiple input single output channel in the 2.47 GHz band. Two communication scenarios were examined: a picocell mobile scenario consisting of a stationary base station and mobile handsets, and a point-to-point fixed-position wireless communication system consisting of two immobile wireless nodes mounted on utility poles above pedestrian traffic. Measurements were conducted with two antenna types: an omnidirectional dipole, and a polarized directional antenna. Low path-loss values measured with both omnidirectional and directional antennas suggest that buildings lining the downtown streets behave like a waveguide. Directional antennas experience substantially less small scale fading, but are more susceptible to shadowing obstructions. Directional antenna rejection measurements suggest that systems employing space-division multiplexing will experience little interference.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Engineering--Electronics and ElectricalWirelessPropagationChannel MeasurementsMISODense Urbanmaster thesis10.11575/PRISM/24631