Coverage Analysis for Low-Altitude UAV Networks in Urban Environments

Wireless access points on unmanned aerial vehicles (UAVs) are being considered for mobile service provisioning in commercial networks. To be able to efficiently use these devices in cellular networks it is necessary to first have a qualitative and quantitative understanding of how their design parameters reflect on the service quality experienced by the end user. In this paper we set up a scenario where a network of UAVs operating at a certain height above ground provide wireless service within coverage areas shaped by their directional antennas. We provide an analytical expression for the coverage probability experienced by a typical user as a function of the UAV parameters.Comment: Under Submissio

Backhaul For Low-Altitude UAVs in Urban Environments

Unmanned Aerial Vehicles (UAVs) acting as access points in cellular networks require wireless backhauls to the core network. In this paper we employ stochastic geometry to carry out an analysis of the UAV backhaul performance that can be achieved with a network of dedicated ground stations. We provide analytical expressions for the probability of successfully establishing a backhaul and the expected data rate over the backhaul link, given either an LTE or a millimeter-wave backhaul. We demonstrate that increasing the density of the ground station network gives diminishing returns on the performance of the UAV backhaul, and that for an LTE backhaul the ground stations can benefit from being colocated with an existing base station network

Canada in a Climate Disrupted World

Climate change has already begun impacting economies and societies across the globe, and its impacts are expected to increase into the future. Adaptation to climate change is and will continue to be one of the greatest policy challenges facing the Canadian government. However, im- portant and much-needed work on understanding the future of climate change has not yet been completed. Gaps remain in the body of academic, government, and other policy-relevant publications. Specifically, there is a relative paucity of research done on the indirect impacts of climate change on Canada. These external impacts outside of Canada’s borders may have second-order effects, the implications of which have thus far remained largely unexplored. In this report, we identify key issue areas which are currently or potentially affected by these indirect impacts. We also undergo a thorough literature review, and locate areas in which further data re- search is required