Unlock instant, AI-driven research and patent intelligence for your innovation.

A clock performance monitoring system, method and device

A monitoring device and monitoring system technology, applied in the direction of synchronization device, transmission system, digital transmission system, etc., can solve problems such as poor monitoring effect

Active Publication Date: 2019-12-13
HUAWEI TECH CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The embodiment of the present invention provides a clock performance monitoring system, method and device, which can simultaneously monitor the influence of PMD dispersion, optical dispersion, and central frequency inconsistency of transceiver lasers on the performance of the clock recovery module, so as to solve the problems existing in the existing clock performance monitoring methods The problem of poor monitoring effect

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A clock performance monitoring system, method and device
  • A clock performance monitoring system, method and device
  • A clock performance monitoring system, method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] Embodiment 1 of the present invention provides a clock performance monitoring system. The clock performance monitoring system can be applied to coherent optical communication systems or non-coherent optical communication systems, for example, can be applied to mobile networks, microwave networks, and metropolitan area networks. In systems such as those with ADC sampling and clock recovery units, the embodiments of the present invention will not describe it in detail. Specifically, such as image 3 As shown, it is a schematic structural diagram of the clock performance monitoring system in Embodiment 1 of the present invention, and the clock performance monitoring system may include a signal clock compensator 21, a signal conditioner 22, a phase detector 23, and a loop filter 24 , an interpolation controller 25 and a clock performance monitoring device 26, wherein:

[0060] The clock performance monitoring device 26 can be used to feed back to the signal clock compensat...

Embodiment 2

[0103] Based on the same inventive concept as that of Embodiment 1 of the present invention, Embodiment 2 of the present invention provides a clock performance monitoring method, such as Figure 7 As shown, it is a schematic flowchart of the clock performance monitoring method described in Embodiment 2 of the present invention, and the method may include the following steps:

[0104] Step 701: The clock performance monitoring device receives a signal fed back by a loop filter.

[0105] Wherein, based on the relevant description of Embodiment 1, it can be seen that the signal fed back by the loop filter to the clock performance monitoring device (ie, the signal characteristic parameter modifier) ​​is a signal obtained by filtering the signal from the phase detector. For example, specifically, it may be a signal derived from the integration path of the loop filter, which will not be described in detail here.

[0106]Step 702: According to the signal fed back by the loop filter,...

Embodiment 3

[0117] Based on the same inventive concept as that of Embodiment 1 and Embodiment 2 of the present invention, Embodiment 3 of the present invention provides a clock performance monitoring device. For the specific implementation of the clock performance monitoring device, please refer to the above method embodiment 2 or system embodiment. Relevant descriptions in Part 1 will not be repeated here. Specifically, such as Figure 8 As shown, the clock performance monitoring device mainly includes:

[0118] The receiving module 81 can be used to receive the signal fed back by the loop filter;

[0119] The processing module 82 can be configured to, according to the signal fed back by the loop filter, the optical dispersion compensation signal fed back to the signal clock compensator for compensating the residual optical dispersion, and the signal used to compensate the polarization state tracking error fed back to the signal adjuster The two polarization state tracking coefficients...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A clock performance monitoring system, method and device, in which according to one output signal of a loop filter (24), the value of optical dispersion compensation signal C and the values of polarization tracking coefficients A and A' can be updated, thereby not only monitoring the effect of optical dispersion through the change of C value but also tracking polarization through the change of A and A' values, and because the phase portion of C value compensation is also capable of compensating for the phase variation caused by laser frequency domain offset, the optical dispersion compensation and the effect of laser frequency domain offset on phase can be addressed simultaneously, thereby realizing an effect of simultaneously monitoring the influence of PMD dispersion, optical dispersion and inconsistently receiving / transmitting the laser center frequency on the performance of a clock recovery module, solving the poor monitoring effect of the existing clock performance monitoring mode, enhancing the comprehensiveness and accuracy of monitoring and further improving the system performance.

Description

technical field [0001] The invention relates to the technical field of clock recovery, in particular to a clock performance monitoring system, method and device. Background technique [0002] In a coherent optical communication system, the clock receiver needs to perform algorithm processing in the digital domain after the photoelectric conversion is completed. Among them, the speed of algorithm processing and the speed of data transmission need to be consistent at all times, so as to guarantee all transmitted data. can be processed in a timely manner, that is, clock synchronization. [0003] Specifically, in a coherent optical communication system, clock synchronization is usually implemented by a clock recovery module. Among them, the position of the clock recovery module in the coherent optical communication system can be as follows figure 1 shown. Depend on figure 1 It can be seen that after the dispersion estimation and compensation module eliminates part of the opt...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H04B10/2507H04L7/00
CPCH04B10/2507H04L7/00
Inventor 万文通
Owner HUAWEI TECH CO LTD