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A Construction Method of Optical Orthogonal Codes with Autocorrelation Constraint 2

An optical orthogonal code and construction method technology, applied in the field of communication, can solve the problems of impracticality, inability to realize, low coding efficiency of construction method, etc., and achieve the effects of simple construction method, fast construction speed and large code weight value

Active Publication Date: 2019-05-17
SHENZHEN UNIV
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Problems solved by technology

[0008] The technical problem to be solved by the present invention is to provide an automatic Construction Method of Optical Orthogonal Codes with Correlation Constraint 2

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  • A Construction Method of Optical Orthogonal Codes with Autocorrelation Constraint 2
  • A Construction Method of Optical Orthogonal Codes with Autocorrelation Constraint 2
  • A Construction Method of Optical Orthogonal Codes with Autocorrelation Constraint 2

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Embodiment Construction

[0038] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0039] figure 1 It is a flow chart of the construction method of the optical orthogonal code whose autocorrelation constraint is 2 in the present invention, such as figure 1 Shown:

[0040] The construction method of the optical orthogonal code whose autocorrelation constraint is 2 of the present invention comprises the following steps:

[0041] S1. According to the number of code words n and the code weight w required to be constructed, an integer array M is constructed;

[0042] S2. Fetching numbers from the integer sequence M according to the preset number fetching rules, constructing a triangular matrix D of signal difference distances and a set T of difference distance pairs of optical orthogonal code codewords w...

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Abstract

The invention discloses a construction method of an optical orthogonal code with a self-correlation constraint of 2. The method comprises the following steps: constructing an integer sequence M according to the number n and code weights W of code words needing to be constructed; selecting from the integer sequence according to a preset selection rule to construct a marking difference distance triangular matrix D and a difference distance pair set T of the optical orthogonal code with the self-correlation constraint of 2; optimizing a code length F according to the marking difference distance triangular matrix D, the difference distance pair set T and the selected integer sequence M based on a preset optimization rule; and constructing the optical orthogonal code with the self-correlation constraint of 2 according to a mapping relationship constructed by the marking difference distance triangular matrix D. Through construction of the marking difference distance triangular matrix D and the difference distance pair set T of the optical orthogonal code with the self-correlation constraint of 2, an optical orthogonal code word with the self-correlation constraint of 2 of any number andany code weight can be constructed, and the coding efficiency can be improved by a code length optimization method.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a method for constructing an optical orthogonal code with an autocorrelation constraint of 2. Background technique [0002] With the development of communication technology and the improvement of science and technology, people have more and more demands for communication services. In addition to ordinary telecommunication services, broadband services such as high-definition television and video on demand also have great demand. All of the above services require A broadband, real-time, and multi-service capable network. Optical code division multiple access technology has asynchronous access, can make full use of the bandwidth of optical fiber, simple protocol, can support a large number of users using different rates and can guarantee the quality of service (Quality of Service, QoS), no matter in the backbone network or in the so-called The "first kilometer" access networ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/00H04J13/00H04J13/18
CPCH04J13/004H04J13/18H04J14/007
Inventor 李晓滨
Owner SHENZHEN UNIV
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