Key;
Laboratory;
of;
Optoelectronic;
Technology;
and;
Systems;
of;
Ministry;
of;
Education,;
Chongqing;
University,;
Chongqing;
400030,;
China;
Key;
Laboratory;
of;
Network;
Control;
and;
Intelligent;
Instrument;
of;
Ministry;
of;
Education,;
Chongqing;
University;
of;
Posts;
and;
Telecommunications,;
Chongqing;
400065,;
China;