State;
Key;
Laboratory;
of;
Information;
Photonics;
and;
Optical;
Communication,;
Institute;
of;
Information;
Photonics;
andOptical;
Communication,;
Beijing;
University;
of;
Posts;
and;
Telecommunications,;
Beij'ing;
100876,;
China;
高清电视; 传输信道; 单载波; 共存; 光学; 国际电信联盟; 无源光网络; 光网络单元;