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A method and device for sending and receiving data signals and monitoring signals

A technology for monitoring signals and data signals, applied in the field of communication, can solve complex, expensive, high-cost and other problems, and achieve the effect of improving transmission efficiency and simplifying structure

Active Publication Date: 2018-01-30
CHINA MOBILE COMM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to realize the manageability and controllability of the transmission network, in the process of transmitting the modulated monitoring signal and the data signal together, many monitoring nodes (intermediate nodes) of the transmission network need to demodulate the monitoring signal. The monitoring signal and the data signal are transmitted together, so complex and expensive optical coherent receivers need to be configured on the monitoring node and complete high-frequency electrical domain signal processing, resulting in high costs

Method used

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  • A method and device for sending and receiving data signals and monitoring signals
  • A method and device for sending and receiving data signals and monitoring signals
  • A method and device for sending and receiving data signals and monitoring signals

Examples

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Embodiment 1

[0069] Embodiment 1 of the present invention provides a method for sending a data signal and a monitoring signal, and the specific implementation is as follows figure 2 shown, including:

[0070] S101: Determine the data signal and monitoring signal to be sent.

[0071] S102: Perform high-frequency coherent phase modulation on the data signal to obtain a phase-modulated data signal.

[0072] S103: Perform low-frequency amplitude modulation on the monitoring signal to obtain an amplitude-modulated monitoring signal.

[0073] S104: Add the amplitude-modulated monitoring signal to the phase-modulated data signal, and send it to the receiving end.

[0074] It should be noted that, in this embodiment of the present invention, S102 and S103 are executed in no particular order, and the monitoring signal may be subjected to amplitude modulation first, or the data signal may be subjected to phase modulation first.

[0075] Embodiments of the present invention In the following, a sp...

Embodiment 2

[0093] Based on the method for sending a data signal and a monitoring signal provided in the first embodiment, the second embodiment of the present invention provides a method for receiving a data signal and a monitoring signal, which is used for receiving the data signal and the monitoring signal sent by the sending method in the first embodiment ,Depend on Image 6 and Figure 11 It can be seen that after adding the low-frequency amplitude-modulated monitoring signal to the high-frequency coherent phase-modulated data signal, the monitoring signal is mainly concentrated in the low frequency. The phase-modulated data signal is filtered, so that the filtered signal is mainly a low-frequency amplitude-modulated monitoring signal, and some low-frequency components and noise of the high-frequency data signal may be added. Therefore, the specific implementation process of obtaining the monitoring signal in the embodiment of the present invention is as follows Figure 12 shown, in...

Embodiment 3

[0099] Based on the method for sending a data signal and a monitoring signal provided in the first embodiment, the embodiment of the present invention provides a device for sending a data signal and a monitoring signal. The device is composed of the following Figure 13 shown, including:

[0100] The determination unit 1 is used for determining the data signal and the monitoring signal to be sent.

[0101] The sending unit 2 is used to perform high-frequency coherent phase modulation on the data signal, perform low-frequency amplitude modulation on the monitoring signal, add the amplitude-modulated monitoring signal to the phase-modulated data signal, and send it to the receiving end.

[0102] Specifically, the sending unit 2 is specifically used for:

[0103] Using time division multiplexing, high-frequency coherent phase modulation is performed on the data signal, and low-frequency amplitude modulation is performed on the monitoring signal, and the amplitude-modulated monit...

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Abstract

The invention discloses a method and device for sending and receiving data signals and monitoring signals, so as to avoid receiving and demodulating the monitoring signals by configuring complex and expensive optical coherent receivers on the monitoring nodes. In the present invention, at the sending end, the data signal and monitoring signal to be sent are determined; high-frequency coherent phase modulation is performed on the data signal, low-frequency amplitude modulation is performed on the monitoring signal, and the amplitude-modulated monitoring signal is added to the In the phase-modulated data signal, it is sent to the receiving end. Through the present invention, when the receiving end is receiving signals, it can filter in the frequency domain through a low-pass filter to obtain a low-frequency amplitude-modulated monitoring signal with noise, which is received by an ordinary low-frequency optical detector, and then The monitoring signal can be obtained by low-frequency electrical domain signal processing, which avoids the configuration of complex and expensive optical coherent receivers on the monitoring node to receive and demodulate the monitoring signal.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a method and device for sending and receiving data signals and monitoring signals. Background technique [0002] The explosive growth of broadband demand has brought enormous pressure to the transmission network of optical communication systems. In order to increase the transmission capacity, high-speed transmission systems are required. [0003] At present, in high-speed transmission systems, high-speed optical coherent phase modulation technology is widely used at the transmitting end, and the monitoring signal and data signal in the optical communication system are modulated by the same modulation method and then transmitted to the receiving end together. figure 1 Shown is a schematic diagram of the time domain signal obtained after the monitoring signal and the data signal are modulated by high-speed optical coherent phase modulation technology. Using h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/079H04B10/61
Inventor 李晗柳晟李允博王磊
Owner CHINA MOBILE COMM GRP CO LTD
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