发明名称 |
Optical OFDM receiver, subcarrier separation circuit, subcarrier separation method and system |
摘要 |
A high-performance optical OFDM receiver is realized. A subcarrier separation circuit receives an optical OFDM signal consisting of two subcarriers A and B and separates a subcarrier component, signal light and first local oscillator light are input to the subcarrier separation circuit, the subcarrier separation circuit converts the signal light and the first local oscillator into a baseband electrical signal, the subcarrier separation circuit converts the baseband electrical signal into a digital signal, the subcarrier separation circuit shifts the frequency of the converted digital signal so that a center frequency of the subcarrier A becomes zero, and the subcarrier separation circuit adds a frequency shifted signal to a signal obtained by delaying the frequency shifted signal by 1/2 of a symbol time to separate a component of the subcarrier A.
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申请公布号 |
EP2247012(A1) |
申请公布日期 |
2010.11.03 |
申请号 |
EP20090713045 |
申请日期 |
2009.02.20 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
SANO, AKIHIDE;YAMADA, EIICHI;KOBAYASHI, TAKAYUKI;ISHIHARA, KOICHI;MIYAMOTO, YUTAKA;KUDO, RIICHI |
分类号 |
H04B10/2513;H04B10/40;H04B10/50;H04B10/516;H04B10/60;H04B10/61;H04J11/00;H04J14/00;H04J14/02;H04L25/03;H04L27/26 |
主分类号 |
H04B10/2513 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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