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2. 发明公开

EP1943755A2 METHODS AND APPARATUS FOR OPTICAL TRANSMISSION OF DIGITAL SIGNALS 有权
标题翻译：用于光学传输数字信号的方法和设备
公开(公告)号：EP1943755A2
公开(公告)日：2008-07-16
申请号：EP06790381.5
申请日：2006-10-12
申请人： MONASH UNIVERSITY
发明人： LOWERY, Arthur , ARMSTRONG, Jean
IPC分类号： H04B10/00
CPC分类号： H04N7/22 , H04B10/2513 , H04B10/5165 , H04B10/541 , H04B10/548 , H04B10/556 , H04B10/5561 , H04B10/5563 , H04B10/6971
摘要： A system (100) for transmitting digital information includes a transmitting apparatus (102) for generating an optical signal bearing digital information, a dispersive optical channel (104), and a receiving apparatus (110) for receiving the optical signal. The dispersive optical channel (104) is disposed to convey the optical signal from the transmitting apparatus (102) to the receiving apparatus (110). The transmitting apparatus includes an encoder (114) for encoding digital information into a series of blocks, each including a plurality of data symbols corresponding with one or more bits of digital information. A signal generator (118) generates a time-varying signal corresponding with each of said blocks. An optical transmitter (136) is arranged to apply the time-varying signal to an optical source (138) to produce an optical signal which includes an optical carrier and substantially only a single information bearing optical sideband in an optical frequency domain, the sideband corresponding with the time-varying signal. The receiving apparatus (110) includes an optical detector (146) for detecting the optical signal to produce a corresponding received time-varying electrical signal. The receiver further includes means (166) for generating a series of received data blocks from the time-varying electrical signal. An equaliser (168) performs an equalisation of received data symbols included in each data block to mitigate the effect of dispersion of the optical channel, thereby enabling the transmitted data symbols to be recovered.
摘要翻译：用于发送数字信息的系统（100）包括用于产生承载数字信息的光信号的发送装置（102），色散光信道（104）和用于接收光信号的接收装置（110）。色散光信道（104）被设置为将来自发送设备（102）的光信号传送到接收设备（110）。发送设备包括用于将数字信息编码成一系列块的编码器（114），每个块包括与一个或多个数字信息比特对应的多个数据符号。信号发生器（118）产生对应于每个所述块的时变信号。光发射器（136）被布置成将时变信号应用于光源（138）以产生光信号，该光信号包括光载波并且在光频域中基本上只有单个信息承载光边带，该边带对应于随时间变化的信号。接收装置（110）包括用于检测光信号以产生相应的接收到的时变电信号的光检测器（146）。接收机还包括用于从时变电信号生成一系列接收数据块的装置（166）。均衡器（168）执行包括在每个数据块中的接收数据符号的均衡，以减轻光信道的色散效应，由此使得发送的数据符号能够被恢复。

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