Block chain-based two-dimensional variable code re-ocdma system and data processing method

Abstract

The invention discloses a block chain-based two-dimensional code-changing and re-OCDMA system including: a block chain, which is used to classify the QoS requirements of user signals, obtain the final category value of the QoS requirements, and send the user signals every short period of time. The final category value of the QoS requirements and the data to be sent are recorded in the next block in the form of a hash value, and the hash value of the previous block is also recorded at the same time; the interface is used to receive the data sent by the blockchain Into the two-dimensional code-changing re-OCDMA system; the two-dimensional code-changing re-OCDMA system is used to perform differentiated QoS encoding and decoding transmission of user data in the OCDMA system according to user QoS requirements. The invention proposes to use the block chain to determine the category value of the user's QoS requirement, which can well ensure the security of the user information and prevent it from being tampered with. The implementation of the two-dimensional code-changing and re-OCDMA system can meet the QoS requirements of different users to achieve flexible and diverse services, and the system is flexible and economical. The system can be used for elastic optical networks that flexibly schedule services.

Description

technical field [0001] The invention belongs to the technical field of optical communication, and in particular relates to a block chain-based two-dimensional transcoded re-OCDMA system and a data processing method. Background technique [0002] With the explosive growth of mobile Internet, big data and other data services, people's demand for high-speed communication and rich media content continues to grow, such as data, video, sound, image and other information, making the system more critical for security, capacity, rate transmission and Quality of Service (QoS) [0003] The need is increasingly urgent. [0004] Optical code division multiple access technology (OCDMA) is the development and extension of code division multiple access (CDMA) technology. It is a research hotspot in the field of communication and has broad application prospects. OCDMA technology can provide differentiated QoS at the physical layer, and variable-code heavy-duty address codes are superior t...

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Problems solved by technology

[0010] However, the existing OCDMA system based on all-optical coding and decoding has the following disadvantages: as the number of multiplexing increases, there is a strong problem of multiple access interference between users, and it is necessary to use expensive devices such as optical threshold devices and optical hard limiters. The equipment can be effectively suppressed, which increases the cost of the system; the system has relatively high requirements for the light source, and needs to use expensive light source equipment, and the system cost is further increased; the address code and codec used in the conventional OCDMA system are fixed and cannot be easily Provide QoS requirements well

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