[1] Nantong Univ, Sch Informat Sci & Technol, Nantong 226019, Peoples R China
[2] Univ Alberta, Dept Elect & Comp Engn, Edmonton, AB T6G 2R3, Canada
[3] Oklahoma State Univ, Sch Elect & Comp Engn, Stillwater, OK 74078 USA
[4] Victoria Univ Wellington, Sch Engn & Comp Sci, Wellington 6140, New Zealand