Construction method of strict correlation constraint optical orthogonal codes
A related constraint and optical orthogonal code technology, applied in the field of communication, can solve the problems of low encoding efficiency, inability to expand optical orthogonal code, and impractical construction method, etc., and achieve high encoding efficiency, large number, and large code weight value Effect
Active Publication Date: 2018-06-29
SHENZHEN UNIV
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Problems solved by technology
[0006] The technical problem to be solved by the present invention is to provide a method for constructing optical orthogonal codes that cannot be extended to construct optical orthogonal codes with any code weight and number of codewords, the construction method is not practical and the encoding efficiency is low. A Construction Method of Strict Correlation Constrained Optical Orthogonal Codes
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[0034] 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.
[0035] figure 1 is a flow chart of the construction method of the strict correlation constrained optical orthogonal code of the present invention, such as figure 1 Shown:
[0036] The construction method of the strict correlation constraint optical orthogonal code of the present invention comprises the following steps:
[0037] S1. According to the number of code words n and the code weight w required to be constructed, an integer array M is constructed;
[0038] S2. Fetching numbers from the integer sequence M according to a predetermined number fetching rule, and constructing a triangular matrix D of sign difference distances of the codewords of the strictly correlated constrained optical orthogonal code;
[0039] ...
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The invention discloses a construction method of strict correlation constraint optical orthogonal codes, and the method comprises the following steps: constructing an integer sequence M according to the number n of codewords needed to be constructed and code weight w; accessing from the integer sequence according to a preset access rule, and constructing a mark difference distance triangular matrix D of the strict correlation constraint optical orthogonal code codewords; according to the mark difference distance triangular matrix D and the integer sequence M for which accessing is completed, optimizing code length F according to a preset optimization rule; and according to a mapping relation formed by the mark difference distance triangular matrix D, constructing the strict correlation constraint optical orthogonal codes. By constructing the mark difference distance triangular matrix D and constructing the strict correlation constraint optical orthogonal codes according to the mappingrelation, the number of the strict correlation constraint optical orthogonal code codewords which can be constructed effectively is high and the numerical value of the code weight is high; and the strict correlation constraint optical orthogonal code codewords of any code weight and any quantity can be constructed; and code length is optimized through the preset optimization rule, and coding efficiency is high.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a construction method of a strict correlation constrained optical orthogonal code. Background technique [0002] The 21st century is an era centered on the Internet, and people's demand for information is increasing day by day. In addition to ordinary telecommunication services, broadband services such as high-definition television and video-on-demand are also in great demand. All of the above services require a broadband, real-time, multi-service network. Optical code division multiple access technology has asynchronous access, can make full use of the bandwidth of optical fiber, simple protocol, supports a large number of users to use 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 network has broad application prospects and strong competitiveness. ...
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Login to View More IPC IPC(8): H04J13/12H04J14/00
CPCH04J13/12H04J14/007
Inventor 李晓滨卢立志
Owner SHENZHEN UNIV