Communications

It is expected that by 2010, the number of wireless users will double to 220 million in North America and quadruple to 1.7 billion worldwide. In addition, the services provided to each user will expand rapidly, including full Internet access and video-on-demand. Future generations of communications systems will meet this demand using wider bandwidths, intelligent allocation of limited resources and adaptive signal processing.

My primary research is in the physical layer of wireless communications systems encompassing areas such as multiple-input, multiple-output (MIMO) systems in cellular, mesh and sensor networks. The goal of this research is to improve the quality, capacity and reliability of wireless communication systems. 

I am, currently, involved in three research projects in the area of communications: 

■  Cross layer designs for cooperative sensor and access-point networks (Sponsored by a NSERC Discovery Grant, May 2005 - April 2010)

■  MIMO OFDM for Multiuser Communications (Sponsored by what-used-to-be Bell University Laboratories)

  This project has been leveraged into a NSERC Collaborative Research and Development Grant (June. 2008 - May. 2010) on Advanced Physical-Layer Link Techniques for Wireless Mesh Networks.

■  Practical Precoding Techniques for the Multiuser MIMO-OFDM/OFDMA Downlink (Sponsored by LG Electronics)

Please visit the communications projects page for more information.....

 

Radar Systems

The goal of adaptive signal processing in radar systems is to detect, identify and track tactical targets with extremely small profiles. There are several applications of this work, such as detecting incoming missiles, concealed weapon detection, detecting drug running boats masked by sea clutter, etc. Just as in communication systems, meeting the expectations placed future radar systems requires practical adaptive processing in the physical layer. In this regard, a recent exciting development has been the introduction of waveform diversity to augment the space and time dimensions in the adaptive process.

 

I am currently involved in two research projects in the area of radar systems:

 

■  Transmit and receive space-time adaptive processing for the detection of weak targets using an over-the-horizon radar (Sponsored by Defense Research and Development Canada)

 

■  Adaptive signal processing for the detection of concealed weapons using a noise radar (Sponsored by Defense Research and Development Canada)

 

Please visit the radar projects page for more information.....