Amcc signal loading method and system

Abstract

The invention discloses an AMCC signal loading method and system, and relates to the field of signal transmission of passive optical networks. The steps of the method include: the sending end generates a user non-return-to-zero code signal to generate a user bipolar inversion return-to-zero code signal, and the user non-return-to-zero code signal includes a user signal and a clock signal; generates an AMCC dual-polarity AMCC non-return-to-zero code signal Polarity reversed return-to-zero code signal, AMCC non-return-to-zero code signal includes clock signal, and AMCC signal spread to the same transmission rate as the user signal; the user's bipolar reverse return-to-zero code signal is amplified and electro-optical converted, Form a user optical signal; load the amplified AMCC bipolar inversion return-to-zero code signal to the user optical signal to form a transmission optical signal. The invention can ensure the transmission performance of user signals and the transmission rate of AMCC signals on the basis of realizing the loading of AMCC signals by one photodetector.

Description

technical field [0001] The invention relates to the field of signal transmission of passive optical networks, in particular to a method and system for loading AMCC signals. Background technique [0002] The point-to-point WDM-PON (Wavelength Division Multiplexing-Passive Optical Network) technology can be applied to the future 5G mobile fronthaul network. According to the ITU-TG.989.2 standard, in WDM-PON, a control channel is required to realize wavelength adjustment and signal monitoring. This channel is called AMCC (Auxiliary Management and Control Channel, auxiliary management control channel), AMCC signal It needs to be loaded on each uplink and downlink wavelength in WDM-PON, and transmitted simultaneously with user signals. [0003] At present, the more common AMCC signal loading method is as follows: adopt the method of up-conversion, up-convert the low-speed AMCC signal to the frequency band of radio frequency at the sending end, and superimpose it with the user si...

AI Technical Summary

Problems solved by technology

[0005] (1) Since there are user signals with high transmission rate and AMCC signals with low transmission rate in the superimposed signal, one high-speed photodetector is required to obtain the user signal, one low-speed photodetector to obtain the AMCC signal, and two photodetectors controller increases system complexity and cost

[0006] (2) After the AMCC signal and the user signal are combined, the waveforms of the AMCC signal and the user signal will be superimposed, which will affect the transmission performance of the user signal

[0007] (3) Since the frequency band of the radio frequency is low, upconverting the low-speed AMCC signal to the frequency band of the radio frequency will limit the transmission rate of the AMCC signal

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