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1.发明授权Optical transceiver using heterodyne detection and a transmitted reference clock 有权使用外差检测和发送参考时钟的光收发器公开(公告)号：US07346279B1
公开(公告)日：2008-03-18
申请号：US10107085
申请日：2002-03-25
申请人： Ji Li , Laurence J. Newell , Tin Vo , Ting K. Yee , Peter H. Chang , Robert K. McElheny
发明人： Ji Li , Laurence J. Newell , Tin Vo , Ting K. Yee , Peter H. Chang , Robert K. McElheny
CPC分类号： H04B10/64 , H04B10/40 , H04B10/6165
摘要： A heterodyne communication system uses coherent data modulation that is resistant to phase noise. In particular, a pilot tone and reference clock signal are transmitted along with the modulated data to form the basis of an electrical demodulation local oscillator at the receiver. The pilot tone and/or reference clock signal carry phase noise which is correlated with the phase noise in the data signal. At the receiver, the local oscillator is generated from the pilot tone and reference clock signal in a manner so that the local oscillator also has phase noise which is correlated with the phase noise in the data signal. Thus, the two noise components can be used to cancel each other during demodulation of the data signal using the local oscillator.
摘要翻译： 外差通信系统使用耐相位噪声的相干数据调制。 特别地，导频和参考时钟信号与调制数据一起发送，以形成接收机处的电解调本地振荡器的基础。 导频音和/或参考时钟信号携带与数据信号中的相位噪声相关的相位噪声。 在接收器处，本地振荡器以导频和参考时钟信号的方式产生，使得本地振荡器也具有与数据信号中的相位噪声相关的相位噪声。 因此，使用本地振荡器在解调数据信号期间可以使用两个噪声分量来相互抵消。
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2.发明申请OPTICAL TRANSCEIVER USING HETERODYNE DETECTION AND A TRANSMITTED REFERENCE CLOCK 失效光学收发器使用异常检测和发送的参考时钟公开(公告)号：US20080145063A1
公开(公告)日：2008-06-19
申请号：US12014019
申请日：2008-01-14
申请人： Ji Li , Laurence J. Newell , Tin Vo , Ting K. Yee , Peter H. Chang , Robert K. McElheny
发明人： Ji Li , Laurence J. Newell , Tin Vo , Ting K. Yee , Peter H. Chang , Robert K. McElheny
IPC分类号： H04B10/00
CPC分类号： H04B10/64 , H04B10/40 , H04B10/6165
摘要： A heterodyne communication system uses coherent data modulation that is resistant to phase noise. In particular, a pilot tone and reference clock signal are transmitted along with the modulated data to form the basis of an electrical demodulation local oscillator at the receiver. The pilot tone and/or reference clock signal carry phase noise which is correlated with the phase noise in the data signal. At the receiver, the local oscillator is generated from the pilot tone and reference clock signal in a manner so that the local oscillator also has phase noise which is correlated with the phase noise in the data signal. Thus, the two noise components can be used to cancel each other during demodulation of the data signal using the local oscillator.
摘要翻译： 外差通信系统使用耐相位噪声的相干数据调制。 特别地，导频和参考时钟信号与调制数据一起发送，以形成接收机处的电解调本地振荡器的基础。 导频音和/或参考时钟信号携带与数据信号中的相位噪声相关的相位噪声。 在接收器处，本地振荡器以导频和参考时钟信号的方式产生，使得本地振荡器也具有与数据信号中的相位噪声相关的相位噪声。 因此，使用本地振荡器在解调数据信号期间可以使用两个噪声分量来相互抵消。
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3.发明授权Optical transceiver using heterodyne detection and a transmitted reference clock 失效使用外差检测和发送参考时钟的光收发器公开(公告)号：US07620318B2
公开(公告)日：2009-11-17
申请号：US12014019
申请日：2008-01-14
申请人： Ji Li , Laurence J. Newell , Tin Vo , Ting K. Yee , Peter H. Chang , Robert K. McElheny
发明人： Ji Li , Laurence J. Newell , Tin Vo , Ting K. Yee , Peter H. Chang , Robert K. McElheny
CPC分类号： H04B10/64 , H04B10/40 , H04B10/6165
摘要： A heterodyne communication system uses coherent data modulation that is resistant to phase noise. In particular, a pilot tone and reference clock signal are transmitted along with the modulated data to form the basis of an electrical demodulation local oscillator at the receiver. The pilot tone and/or reference clock signal carry phase noise which is correlated with the phase noise in the data signal. At the receiver, the local oscillator is generated from the pilot tone and reference clock signal in a manner so that the local oscillator also has phase noise which is correlated with the phase noise in the data signal. Thus, the two noise components can be used to cancel each other during demodulation of the data signal using the local oscillator.
摘要翻译： 外差通信系统使用耐相位噪声的相干数据调制。 特别地，导频和参考时钟信号与调制数据一起发送，以形成接收机处的电解调本地振荡器的基础。 导频音和/或参考时钟信号携带与数据信号中的相位噪声相关的相位噪声。 在接收器处，本地振荡器以导频和参考时钟信号的方式产生，使得本地振荡器也具有与数据信号中的相位噪声相关的相位噪声。 因此，使用本地振荡器在解调数据信号期间可以使用两个噪声分量来相互抵消。
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