Address: Department of Electrical & Computer Engineering, EV. 5.127, Concordia University, 1455 de Maisonneuve Blvd. W.Montreal, Québec Canada H3G 1M8 e-mail: hamouda@ece.concordia.ca ph: +1 (514) 848-2424 ext. 4138 Fax: +1 (514) 848-2802