[Zou, Sai] Hengyang Normal Univ, Coll Comp Sci & Technol, Hengyang, Peoples R China.
[Zou, Sai; Tang, Yuliang] Xiamen Univ, Dept Commun Engn, Xiamen, Peoples R China.
[Ni, Wei] CSIRO, Div CSIRO Computat Informat CCI, Canberra, ACT, Australia.
[Liu, Ren Ping] Univ Technol Sydney, Fac Engn & IT, Sch Comp & Commun, Sydney, NSW, Australia.
[Wang, Lei] Xiangtan Univ, Dept Comp Sci & Technol, Xiangtan, Peoples R China.