1. Sch. Of Info. and Comm. Eng., Uni. of Elect. Sci. and Tech. of China,Chengdu,P.R. China
2. Sch. Of Comp. Sci. and Eng., Uni. of Elect. Sci. and Tech. of China,Chengdu,P.R. China
3. Sch. of Info. and Soft. Eng., Uni. of Elect. Sci. and Tech. of China,Chengdu,P.R. China
4. Marconi Shannon Centre, University of Limerick,Dept. of Elect. and Comp. Eng.,Limerick,Ireland