Method and system for gmm non-uniform quantization for filter multi-carrier modulation optical communication

A filter multi-carrier and modulated light technology, which is applied in the field of optical communication, can solve the problems of high computational complexity and the large number of samples required by the non-parametric estimation histogram method, and achieve good quantization effects, good signal estimation effects, and improved performance effect

Active Publication Date: 2022-06-21
HANGZHOU DIANZI UNIV
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Problems solved by technology

However, this scheme also has the problem that the non-parametric estimation histogram method requires a large number of samples and high computational complexity. Therefore, there is still room for optimization in the non-uniform quantization algorithm for general filter multi-carrier systems.

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  • Method and system for gmm non-uniform quantization for filter multi-carrier modulation optical communication
  • Method and system for gmm non-uniform quantization for filter multi-carrier modulation optical communication
  • Method and system for gmm non-uniform quantization for filter multi-carrier modulation optical communication

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Embodiment 1

[0066] The first embodiment provides a GMM non-uniform quantization system for filtering multi-carrier modulation optical communication, such as figure 1 It includes: a preprocessing module 11, a calculation module 12, and an output module 13;

[0067] The preprocessing module 11 is used to perform data preprocessing on the data sequence sent by the filter bank multi-carrier modulation transmitter to obtain a sample vector, and use the sample vector as the input vector of the GMM quantization module; the sample vector includes Real part signal sample vector and imaginary part signal sample vector;

[0068] The calculation module 12 is used to calculate the GMM parameters of the input real part signal sample vector according to the maximum expectation algorithm, and then estimate the GMM parameters of the imaginary part signal sample vector according to the GMM parameters calculated from the real part signal sample vector, and obtain respectively. The most responsive Gaussian ...

Embodiment 2

[0116] This embodiment provides a method for GMM non-uniform quantization for filter multi-carrier modulated optical communication, comprising the steps of:

[0117] S11. carry out data preprocessing to the data sequence sent by the filter bank multi-carrier modulation transmitter, obtain a sample vector, and use the sample vector as the input vector of the GMM quantization module; the sample vector includes the real part signal sample vector and the imaginary part. Partial signal sample vector;

[0118] S12. Calculate the GMM parameter of the input real part signal sample vector according to the maximum expectation algorithm, and then estimate the GMM parameter of the imaginary part signal sample vector according to the GMM parameter calculated from the real part signal sample vector, and obtain the Gaussian mixture with the largest responsivity respectively. Model;

[0119] S13. The sample is input into the Gaussian mixture model with the largest responsivity, and the clust...

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Abstract

The invention discloses a GMM non-uniform quantization system for filter multi-carrier modulation optical communication, including: a preprocessing module, a calculation module, and an output module; the preprocessing module is used for multi-carrier modulation transmitter of the filter bank The data sequence that sends carries out data preprocessing, obtains sample vector, and described sample vector is used as the input vector of GMM quantization module; Described sample vector comprises real part signal sample vector and imaginary part signal sample vector; Described calculation module uses Calculate the GMM parameters of the input real part signal sample vector according to the maximum expectation algorithm, and then estimate the GMM parameters of the imaginary part signal sample vector according to the GMM parameters calculated by the real part signal sample vector, and obtain the Gaussian mixture model with the largest responsivity respectively ; The output module is used to input the sample into the Gaussian mixture model with the largest responsiveness to perform clustering operation, and obtain and output the quantitative result.

Description

technical field [0001] The present invention relates to the technical field of optical communication, and in particular, to a method and system for GMM non-uniform quantization for filter multi-carrier modulation optical communication. Background technique [0002] In recent years, with the emergence of emerging technologies such as machine learning, social networking, and cloud computing, people's demand for traffic throughput and bandwidth has shown a trend of rapid growth. In order to meet the requirements of large capacity, asynchronous transmission and objective spectral efficiency, The Intensity Modulation Direct Detection (IMDD) technology based on multi-carrier modulation technology is very popular in short-distance optical fiber links due to its simple implementation and low complexity. At the same time, compared with the traditional multi-carrier modulation technology Orthogonal Frequency Division Multiplexing (OFDM), filter bank-based multi-carrier (FBMC), univers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26H04B10/516G06V10/762G06K9/62
CPCH04L27/264H04L27/2627H04B10/5165G06F18/23
Inventor 毕美华林嘉芊杨国伟周雪芳池灏胡淼李齐良
Owner HANGZHOU DIANZI UNIV
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