Project outline

In accordance with the Open Systems Interconnection Reference Model developed by the ISO (International Organization for Standardization), communication networks are represented as layered systems consisting of a “physical” layer at the base and six increasingly higher levels, namely, the data link, network, transport, session, presentation, and applications layers.

To ensure the correct execution of tasks, information from each layer is often required. The physical layer, typically provides information to higher layers such the state of channel transmission.

Traditionally, information flows from one layer to another according to a hierarchical order (from the bottom up or inversely) – which limits network performance. Currently, the CLI team is developing a joint interface between the physical layer and the higher layers which would transfer information directly and effectively to its target destination.

In addition to developing a joint interface, the research team is also focusing on access and routing techniques to optimize information flow. In ad hoc mobile networks, data-routing between different locations is a complex matter due to variability in position and propagation conditions.

Research conducted to date suggests that multi-user detection and reception is a promising solution for improving the effectiveness and throughput of ad hoc networks. These techniques will allow a mobile radio receiver to distinguish between several signal transmissions on one hand and receive multiple communication signals on the other. Multi-user detection also minimizes near-far problems while improving system performance; By creating algorithms and protocols that allow mobile devices to receive multiple simultaneous communication signals, the CLI team will have taken decisive steps in the development of high-performance mobile communications.

Download the scientific overview (pdf)

Results to date

• Designed a simulator combining scenarios and propagation characteristics
• Publications

Expected results

• Develop multi-user detection and reception system
• Design cross layer interface between the physical layer and upper layers 

Our partner

• Ultra Electronics TCS

Team members

Professors: François Gagnon, Maria Bennani, Jean Belzile, Michel Kadoch, Ammar Kouki, Zbigniew Dziong, Christian Cardinal and Stéphane Coulombe
Post-doc researchers: Basile L. Agba (Coordinator of CLI Project), Jinfang Zhang, Jahangir Sarker and Mohamad Haidar
Students: Olfa Ben-Sik-Ali, Olivier Duval, Justin Kouraogo, Zouhair El-Bazzal, Mohamed Bouharras and Youness Nohair
Ultra Electronics TCS team: Nada Ebeid, Jean-Sébastien Néron, Dominique Dubouil, Josée Morency, Michael Darsigny, Denis Couillard, Danny Collard and Walter Martens

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