epon被越来越多的人关注，有olt和onu组成，通过光纤传输信息-epon be more and more people are concerned, there olt and onu composition, optical transmission of information through

光通信系统，BPSK信号的调制解调，预编码。-optical communication system. precode、modulation and demodulation of BPSK.

optical wired network with graph partitioning algorithm for all nodes