| 发明名称 | Differential-coding and decoding for quadrature duobinary coherent optical communication systems | ||
| 摘要 | A method comprising, receiving digital-electrical input symbols of a stream of input symbols, the input symbols corresponding to signal points of a symbol constellation. The method also comprises classifying the input symbols, wherein a first symbol class comprises input symbols corresponding to signal points that are variant to rotation of the symbol constellation, and, a second symbol class comprises input symbols corresponding to signal points that are invariant to rotation of the symbol constellation. The method also comprises applying selective differential coding only to those input symbols of the first symbol class. | ||
| 申请公布号 | US9525493(B2) | 申请公布日期 | 2016.12.20 |
| 申请号 | US201414579389 | 申请日期 | 2014.12.22 |
| 申请人 | Alcatel Lucent | 发明人 | Xie Chongjin |
| 分类号 | H04B10/04;H04B10/61;H04L27/34 | 主分类号 | H04B10/04 |
| 代理机构 | Parker Justiss, PC | 代理人 | Parker Justiss, PC |
| 主权项 | 1. A method, comprising: receiving digital-electrical input symbols of a stream of input symbols, the input symbols corresponding to signal points of a quadrature duobinary symbol constellation; classifying the input symbols, wherein a first symbol class comprises input symbols corresponding to signal points that are variant to rotation of the symbol constellation, and a second symbol class comprises input symbols corresponding to signal points that are invariant to rotation of the symbol constellation; and applying selective differential coding only to those input symbols of the first symbol class. | ||
| 地址 | Boulogne-Billancourt FR | ||