公开(公告)号：US08886058B2

公开(公告)日：2014-11-11

申请号：US13487350

申请日：2012-06-04

Applicant: Jonas Geyer ,  Andreas Bisplinghoff ,  Theodor Kupfer

Inventor： Jonas Geyer ,  Andreas Bisplinghoff ,  Theodor Kupfer

IPC: H04B10/06

CPC classification number: H04B10/6165

Abstract: Carrier phase estimation techniques are provided for processing a received optical signal having a carrier modulated according to a modulation scheme. First and second carrier phase estimation operations are performed on a digital signal derived from an optical carrier obtained from the received optical signal using coherent optical reception. The first carrier phase estimation operation tracks relatively fast phase variations of the optical carrier of the received optical signal to produce a first carrier phase estimation and the second carrier phase estimation operation tracks relatively slow phase variations of the optical carrier of the received optical signal to produce a second carrier phase estimation. A difference between the first and second carrier phase estimations is computed. Occurrence of a cycle slip is determined when the difference is greater than a threshold. A correction is applied to the first carrier phase estimation when the low pass filtered difference exceeds the threshold.

Abstract translation: 提供载波相位估计技术来处理具有根据调制方案调制的载波的接收光信号。 对从使用相干光接收的接收光信号获得的光载波导出的数字信号执行第一和第二载波相位估计操作。 第一载波相位估计操作跟踪所接收的光信号的光载波的相对较快的相位变化，以产生第一载波相位估计，并且第二载波相位估计操作跟踪所接收的光信号的光载波的相对慢的相位变化，以产生 第二载波相位估计。 计算第一和第二载波相位估计之间的差异。 当差值大于阈值时，确定周期滑移的发生。 当低通滤波差异超过阈值时，对第一载波相位估计应用校正。

公开(公告)号：US20130322870A1

公开(公告)日：2013-12-05

申请号：US13487350

申请日：2012-06-04

Applicant: Jonas Geyer ,  Andreas Bisplinghoff ,  Theodor Kupfer

Inventor： Jonas Geyer ,  Andreas Bisplinghoff ,  Theodor Kupfer

IPC: H04B10/08

CPC classification number: H04B10/6165

Abstract: Carrier phase estimation techniques are provided for processing a received optical signal having a carrier modulated according to a modulation scheme. First and second carrier phase estimation operations are performed on a digital signal derived from an optical carrier obtained from the received optical signal using coherent optical reception. The first carrier phase estimation operation tracks relatively fast phase variations of the optical carrier of the received optical signal to produce a first carrier phase estimation and the second carrier phase estimation operation tracks relatively slow phase variations of the optical carrier of the received optical signal to produce a second carrier phase estimation. A difference between the first and second carrier phase estimations is computed. Occurrence of a cycle slip is determined when the difference is greater than a threshold. A correction is applied to the first carrier phase estimation when the low pass filtered difference exceeds the threshold.

Abstract translation: 提供载波相位估计技术来处理具有根据调制方案调制的载波的接收光信号。 对从使用相干光接收的接收光信号获得的光载波导出的数字信号执行第一和第二载波相位估计操作。 第一载波相位估计操作跟踪所接收的光信号的光载波的相对快的相位变化，以产生第一载波相位估计，并且第二载波相位估计操作跟踪所接收的光信号的光载波的相对慢的相位变化，以产生 第二载波相位估计。 计算第一和第二载波相位估计之间的差异。 当差值大于阈值时，确定周期滑移的发生。 当低通滤波差异超过阈值时，对第一载波相位估计应用校正。