This decommissioned ERA site remains active temporarily to support our final migration steps to https://ualberta.scholaris.ca, ERA's new home. All new collections and items, including Spring 2025 theses, are at that site. For assistance, please contact erahelp@ualberta.ca.
Search
Skip to Search Results-
Fall 2024
Onion messages (OMs) are private messages sent between nodes in the Lightning Network (LN) using onion routing. While they are intended to enable interesting applications such as reusable invoices, refunds, and asynchronous payments, OMs may also be used for unintended applications such as...
-
Improving Security and Performance of the RPL Routing Protocol for Low Power and Lossy Networks
DownloadSpring 2022
The Internet of Things (IoT) is an emerging technology that is connecting billions of otherwise ordinary devices to the Internet. A key component of IoT is Low- power and Lossy Networks (LLNs), composed of various resource-constrained devices with limited energy, memory, and processing power. To...
-
Fall 2020
Most modern smartphones are equipped with barometer sensors. Accessing barometers does not require any permission or user notification, as it is deemed to be harmless. We show, however, that by simply reading low-rate barometer's samples, any background application can detect user's finger taps...
-
Fall 2014
We study lifetime of linear and two-dimensional Wireless Sensor Networks (WSNs) for the case where wireless sensors are not able to change their transmission power. In this case, unlike majority of existing works, power control cannot be used to increase network's lifetime. Instead, other...
-
Fall 2015
We study a channel selection problem in cognitive radio with imperfect spectrum sensing. In this problem, a secondary (unlicensed) user must select a subset of M channels out of N channels to sense. The user then accesses up to K ≤ M channels that were sensed free. The objective is to maximize...
-
Random Access on Multipacket Reception Channel with Applications to Satellite Communications
DownloadFall 2014
In the field of multiple-access systems, multipacket reception (MPR) is defined as the capability of the receiver to successfully receive/decode concurrent packets from multiple transmitters. While physical-layer capabilities and limitations of MPR-capable systems using technologies such as...
-
Random Instantly Decodable Network Coding for Packet Loss Recovery in Wireless Broadcast of Real-time Multimedia
DownloadSpring 2020
Real-time multimedia streaming (e.g. live video streaming) has become an essential part of our day to day life. In many scenarios, we need to wirelessly broadcast real-time media to many users. These scenarios include broadcast of a sports event at a stadium to all the fans present, broadcast of...