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|1. (WO2018058576) DATA MODULATION METHOD AND ENCODER|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||DATA MODULATION METHOD AND ENCODER|
Embodiments of the present application provide a data modulation method and an encoder for providing optical fiber with better resistance to nonlinear damage. A technical solution provided by the present application is as follows: an encoder determining a first constellation point from an at least two-dimensional first constellation diagram in multi-dimensional constellation diagrams, and determining a second constellation point from another at least two-dimensional second constellation diagram in the multi-dimensional constellation diagrams, wherein the first constellation point and the second constellation point cannot be constellation points having a maximum amplitude in respective constellation diagrams at the same time; the encoder matching the first constellation point and the second constellation point to generate a constellation combination point; the encoder receiving a bit sequence carrying digital information; the encoder mapping the bit sequence into a symbol for transmission by means of a mapping table of the constellation combination point, wherein the mapping table is pre-stored by the encoder; and the encoder sending the symbol to a digital-analog converter.