A training sequence generating method, a training sequence generating device, and an optical communication system

Abstract

The invention provides a training sequence generating method, a training sequence generating device, and an optical communication system, wherein the training sequence generating method comprises: generate a pseudo-random sequence; access to the modulator chirp coefficient used in the optical communication system; to use negated chirp coefficient of the pseudo-random sequence modulated to produce a pseudo-random sequence chirp; frequency domain construct contains L subcarrier training symbol segments, wherein, in the training symbol segment: the signals sent by the ordinal number for the even-numbered subcarriers for the pseudo-random sequence of chirp in the same sequence number of the pseudo-random number of the frequency-domain signal, the sequence number for the odd-numbered sub-carrierthe zero-level signal on a signal transmitted; segment of the training symbols from the frequency domain to the time domain to obtain the segment of the training symbols in the time domain; output after the training sequence is generated based on the time domain training symbols paragraph. The technical solution provided by the present invention can effectively solve the introduction of the optical signal caused by the frequency offset chirp.

Description

technical field [0001] The embodiments of the present invention relate to the field of optical communication, and in particular, to a method for generating a training sequence, a device for generating a training sequence, and an optical communication system. Background technique [0002] The metropolitan area and access optical network system are the current research hotspots. The metropolitan area network is to integrate and sort out the user services distributed in different places (enterprises, institutions, intelligent communities, commercial and residential buildings, hotels, schools, etc.) to the greatest extent. , aggregated, and then sent to the backbone layer, so that the network level becomes very clear, and the efficiency is greatly improved. When the broadband metropolitan area network uses optical fiber as the transmission medium, there are also many options for access technologies. Currently, the mainstream ones are: Ethernet access technology and Passive Optic...

AI Technical Summary

Problems solved by technology

[0004] The embodiment of the present invention provides a method for generating a training sequence, a device for generating a training sequence, and an optical communication system, which are used to solve the problem of frequency deviation of optical signals caused by the introduction of chirp

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