Speaker: Professor Tapan. K. Sarkar, Department of Electrical and Computer
Engineering, Syracuse University, Syracuse, New York, USA

Date: Thursday 29 November 2012 (will follow event # 6)
Seminar: 3:35 pm – 4:50 pm.
Questions, Discussion, Refreshments, and Networking: 4:50 pm – 5:00 pm.

Location: ME 4124, Mackenzie Engineering Building, Carleton University

Parking: Parking fees apply.

Registration: Free to attend, but registration is required.
To ensure a seat, please register by contacting
Dr. Qingsheng Zeng (qingsheng.zeng@crc.gc.ca)

Organizer: Dr. Qingsheng Zeng

Organizer e-mail: qingsheng.zeng@crc.gc.ca

Organized by: IEEE Ottawa AP (Antennas and Propagation) / MTT (Microwave Theory and Techniques) Joint Chapter

Abstract: Introduction: The objective of this presentation is to present a scientific
methodology that can be used to analyze the physics of multiantenna systems. Multiantenna
systems are becoming exceedingly popular because they promise a different dimension,
namely spatial diversity, than what was available to the communication systems engineers:
The use of multiple transmit and receive antennas provides a means to perform spatial
diversity, at least from a conceptual standpoint. In this way, one could increase the
capacities of existing systems that already exploit time and frequency diversity. In
such a scenario it could be said that the deployment of multiantenna systems is
equivalent to using an overmoded waveguide, where information is simultaneously transmitted
via not only the dominant mode but also through all the higher-order modes. We look
into this interesting possibility and study why communication engineers advocate the
use of such systems, whereas electromagnetic and microwave engineers have avoided such
propagation mechanisms in their systems. Most importantly, we study the physical principles
of multiantenna systems through Maxwell’s equations and utilize them to perform various
numerical simulations to observe how a typical system will behave in practice. There is an
important feature that is singular in electrical engineering and that many times is not
treated properly in system applications: namely, superposition of power does not hold.