Events

 
Seminar
Improving the capacity and performance of indoor wireless communication

by Prof. Kevin Sower, Department of Electrical and Computer Engineering, the University of Auckland

Date
 :  29 Dec 2005 (Thu)
Time
 :  2:00pm - 4:00 pm
Venue  :  Room 2504, 2/F (Lift 25-26), HKUST

Abstract
The growing popularity of indoor wireless communication systems places increasing stress on the limited frequency spectrum available for such services. Meanwhile, users expect greater capacity and performance from their indoor systems. The challenge for the engineer is to deliver high quality, high capacity wireless services in the presence of other cochannel wireless systems. This seminar discusses several different approaches to the challenge. A primary consideration is the spatial deployment of wireless access points (base stations). The use of modified hardware, such as directional antennas, can also be used to limit cochannel interference. Advanced signal processing techniques are being developed to allow high quality communications in poor quality and highly interfered environments. An example is MUMD (multi-user macro-diversity detection). Another interference control option is to modify the indoor environment by applying frequency selective surfaces to walls, ceilings and floors. Such modification might allow enhanced internal security, capacity and performance by isolating the indoor system from external cochannel systems, while still allowing other radio services to operate normally.


Biography
Kevin Sowerby is a professor in the Department of Electrical and Computer Engineering at the University of Auckland, New Zealand. He has held research positions in the UK, USA and Canada. His research interests include the area of wireless communications systems and, in particular, methods for designing reliable high-capacity networks. Dr Sowerby has recently been Chair of both the IEEE New Zealand North Section and the NZ Chapter of the IEEE Communications Society. He is currently the Chair of the New Zealand Radio Sector industry group associated with the International Telecommunications Union Study Group 7 (Science Services) and the World Radio Conference Preparatory Group 2 "Space Science Services" (CPG2). During 2005 Dr Sowerby has been on sabbatical leave from the University of Auckland and has spent much of his time with Motorola Labs Florida Research. He has been collaborating in the investigation of radiolocation, neuRFon network performance and capacity.
 

 

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