发明申请
- 专利标题: PERFORMANCE ENHANCEMENT THROUGH OPTICAL VARIANTS
- 专利标题(中): 通过光学变化的性能提升
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申请号: US13245160申请日: 2011-09-26
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公开(公告)号: US20130070785A1公开(公告)日: 2013-03-21
- 发明人: Xiang Liu , Peter J. Winzer , Andrew Chraplyvy
- 申请人: Xiang Liu , Peter J. Winzer , Andrew Chraplyvy
- 申请人地址: US NJ Murray Hill
- 专利权人: ALCATEL-LUCENT USA INC.
- 当前专利权人: ALCATEL-LUCENT USA INC.
- 当前专利权人地址: US NJ Murray Hill
- 主分类号: H04B10/00
- IPC分类号: H04B10/00 ; H04J14/00
摘要:
An optical transport system configured to transmit a set of two or more optical variants per bit-word, with the optical variants in the set being different from one another in one or more of the time of transmission, spatial localization, polarization of light, carrier wavelength, and subcarrier frequency. Differences between the optical variants may also be due to different respective constellation mapping. The optical variants of each set are detected and processed at the receiver in a manner that enables coherent summation of the corresponding electrical signals prior to constellation de-mapping. The coherent summation tends to average out the deleterious effects of linear and nonlinear noise/distortions imparted on the individual optical variants in the optical transport link because said noise/distortions are incoherent in nature. A BER reduction enabled by the use of optical variants may be implemented in addition to or instead of that provided by FEC coding.
公开/授权文献
- US08824501B2 Performance enhancement through optical variants 公开/授权日:2014-09-02