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Implementation method and structure of high-linearity microwave photonic link based on photonic neural network

A technology of microwave photonic link and neural network, applied in the field of realization method and structure of highly linear microwave photonic link, can solve problems such as inapplicability and difficult application, achieve real-time processing capability, low power consumption processing capability, and simplify system structure Effect

Active Publication Date: 2019-02-22
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

However, most of the existing technical solutions are at the cost of complex specific structures or known links and transmission signal parameters. The former is not suitable for large-array radar systems and multipoint communication systems with complex networks, while the latter is difficult. Application in non-cooperative electronic information systems

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  • Implementation method and structure of high-linearity microwave photonic link based on photonic neural network
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  • Implementation method and structure of high-linearity microwave photonic link based on photonic neural network

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[0030] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0031] Any feature disclosed in this specification, unless specifically stated, can be replaced by other alternative features that are equivalent or have similar purposes. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0032] A method for implementing a highly linear microwave photonic link based on a photonic neural network, specifically including the following process: Step 1, process a radio frequency signal source through an intensity modulation link, and input it to N microring filters, where N is greater than 1 Integer; step 2, carry out neural network training for the weight coefficients of N microring filters; step 3, modulate and linearly superpose the N electrical signals output by the N microring filters,...

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Abstract

The invention relates to the field of microwave photon transmission, and discloses an implementation method and structure of a high-linearity microwave photonic link based on photonic neural network.The method comprises the following steps: processing a radio-frequency signal source through a strength modulation link, and inputting the processed radio-frequency signal source into N micro-loop filters, wherein N is an integer being larger than 1; performing neutral network training on the weight coefficients of the N micro-loop filters; and performing modulation and linear superposition on N electric signals output by the N micro-loop filters to construct the high-linear microwave photonic link. According to the method, a reverse link transmission function is built by the photonic neural network, and the high-linearity microwave photonic link is realized through a back compensation concept, so that the system structure is simplified remarkably. Through a BP training algorithm, a systemcan work under a non-cooperative environment, has broadband (such as THz), real-time and low-power processing capabilities, and is highly compatible with an existing microwave photonic link. The invention also discloses an implementation structure of the high-linearity microwave photonic link based on the photonic neural network.

Description

technical field [0001] The invention relates to the field of microwave photon transmission, in particular to a method and structure for realizing a highly linear microwave photon link based on a photon neural network. Background technique [0002] The emergence of optical wavelength division multiplexing technology and the invention of erbium-doped fiber amplifiers have enabled the rapid development of optical communications. Optical fiber communication has many advantages such as low loss, anti-electromagnetic interference, ultra-wideband, and easy multiplexing in wavelength, space, and polarization. Its main problem is not enough mobility. At the same time, microwave technology is advancing rapidly as the demand for wireless communication capacity increases. Microwave communication can be transmitted in any direction, easy to build and reconstruct, and realize the interconnection with mobile devices; the emergence of cellular systems makes microwave communication have hi...

Claims

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Application Information

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IPC IPC(8): H04B10/2575G06N3/08G06N3/04
CPCH04B10/2575H04B10/25752G06N3/084G06N3/045
Inventor 钟欣陈智宇周涛刘静娴王茂汶
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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