Affiliation: | 1 Department of Electrical Engineering, City University of Hong Kong, 83 Tatchee Avenue, Kowloon, Hong Kong Email: tmchan@ee.cityu.edu.hk, cssamk@cityu.edu.hk, eekman@cityu.edu.hk 2 Department of Computer Science, City University of Hong Kong, 83 Tatchee Avenue, Kowloon, Hong Kong |