| 发明名称 |
METHODS AND APPARATUS FOR COHERENT DUOBINARY SHAPED PM-QPSK SIGNAL PROCESSING |
| 摘要 |
Systems, devices and techniques for receiving a signal comprising a quadrature duobinary modulated signal include performing channel equalization of the received signal using a constant multi-modulus to obtain a set of channel estimation coefficients and a stream of symbols, partitioning, based on modulus, the stream of symbols into three partitions, estimating carrier frequency based on the partitioned stream of symbols, recovering a phase of the signal using a maximum likelihood algorithm, and decoding the partitioned stream of symbols to recover data. |
| 申请公布号 |
US2015222368(A1) |
申请公布日期 |
2015.08.06 |
| 申请号 |
US201314420660 |
申请日期 |
2013.08.08 |
| 申请人 |
ZTE (USA) Inc. |
发明人 |
Yu Jianjun |
| 分类号 |
H04B10/61;H04L27/01;H04L27/22 |
主分类号 |
H04B10/61 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. An optical communications method, comprising:
receiving a signal comprising a quadrature duobinary modulated signal having a three modulus constellation; performing channel equalization of the received signal using a constant multi-modulus to obtain a set of channel estimation coefficients and a stream of symbols; partitioning, based on modulus, the stream of symbols into three partitions; estimating carrier frequency offset based on the partitioned stream of symbols; recovering a phase of the signal using a maximum likelihood algorithm; and decoding the partitioned stream of symbols to recover data. |
| 地址 |
Morristown NJ US |
