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Mai Hassan

Postdoctoral Researcher


HQ Phone: (604) 822-8100

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2194 Health Sciences Mall

Vancouver, British Columbia V6T 1Z3


Company Description

The University of British Columbia, established in 1908, educates a student population of 50,000 on major campuses in two cities and holds an international reputation for excellence in advanced research and learning. The largest is 30 minutes from the he ... more

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Background Information

Employment History

Research Assistant

University of Waterloo

Radio Network Improvement Senior Engineer

Huawei Technologies Co. Ltd

Research and Teaching Assistant


Senior Wireless Application Research Engineer

Intel Cooperation

Radio Solution Architect - Global Delivery Team

Nokia Corporation

Research and Teaching Assistant

The American University in Cairo

Quality Control Enigneer

LINK Development



University of B.C.

master's studies

Cairo University

Web References (57 Total References)

IEEE Vancouver Section [cached]

UBC IEEE Graduate Student Member Mai Hassan featured in The Institute

UBC IEEE Graduate Student Member ... [cached]

UBC IEEE Graduate Student Member Mai Hassan featured in The Institute

IEEE Vancouver Section [cached]

UBC IEEE Graduate Student Member Mai Hassan featured in The Institute

However, Mai Hassan, a PhD ... [cached]

However, Mai Hassan, a PhD student at UBC, suggests that capacity could be improved by borrowing spectrum in broadcasting bands.

Hassan reckons that this can be done by aligning constructive interference points, which would require a large number of smart antennae. However, she has come up with a way of using the array of smart antennae that would be contained within all the mobile devices at a large public event to do exactly that. In this way, it is the crowd of people causing the capacity overload that can also offer a solution.
She said: "You have a lot of cell phone users who are all trying to access the band at the same time so why don't we use this crowd of people and turn this problem into an opportunity".
Hassan said that it would work in everyday scenarios but she had so far focussed her work on large events and emergencies because this is where the need for more wireless capacity is the most pronounced.•

UBC News » Science, Health and Technology [cached]

In a study published in the journal IEEE Transactions on Wireless Communications, Mai Hassan, a PhD student in the Department of Electrical and Computer Engineering, found a way to opportunistically use television and radio channels to transmit cellular signals when systems are pushed beyond capacity.

Mai Hassan
Mai Hassan
“I proposed a more effective way to use any channel in the neighborhood, even if those channels are being used by radio or television stations,†said Hassan. “The challenge was finding a way to make sure the cellular signals didn’t interfere with the people using those channels in the first place.â€
Hassan’s solution involved changing the shape of the wireless signal so she could transmit on channels that use radio or television frequencies. She then had to change the direction of transmission away from the original channel. Instead of using traditional antennas, which transmit signals in all directions, she used smart antennas in mobile phones. Smart antennas transmit signals in a single direction and can steer the beam to any direction. By manipulating the direction of the cellular signals, Hassan was able to transmit calls and texts to a receiver while avoiding any interference with the original radio and televisions signals.
Hassan aligned the constructive interference to help get the cellular signal to its receiver and aligned the destructive interference to cancel in regions where the original radio or television signals were being transmitted.
As a next step, Hassan considered a more cost effective system. She exploited the crowd of mobile phones found in the network, with each phone having only one smart antenna, to cooperatively achieve the same constructive/destructive interference pattern. The phone users were located in different geographical locations but Hassan was able to overcome any asynchronism in their transmissions. She was able to turn the problem of crowded phone users into an opportunity.

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