High anti-noise P-bit light transmission method based on multi-probability distribution

A technology of probability distribution and optical transmission, applied in the field of communication, can solve problems such as insufficient bit error rate performance, high mode coupling strength, poor optical signal quality, etc., to save transmission power, improve anti-noise ability, and strong anti-noise ability Effect
CN111970221AActive Publication Date: 2020-11-20NANJING UNIV OF INFORMATION SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
NANJING UNIV OF INFORMATION SCI & TECH
Publication Date
2020-11-20

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Abstract

The invention discloses a high anti-noise P-bit light transmission method based on multi-probability distribution. According to the high anti-noise P-bit light transmission method, a subcarrier is divided into signal streams in six modes, the signal streams are multiplexed and then transmitted to one core of a 19-core 6-mode optical fiber through using optical fiber fan-in equipment, and 18 pseudo-random binary signals with the same wavelength are modulated by using different binary sequences in different transmitters of the other 18 cores. The 19 signals are sent out by means of a 19-core 6-mode optical fiber, and are received and processed by a signal receiving device; and the multi-probability code modulation adopts Maxwell-Boltzmann distribution to carry out probability shaping on optical signals for subcarriers in different modes, and the value of a probability shaping scaling factor of a high-order mode is greater than the value of a fundamental mode. The high anti-noise P-bit light transmission method has the technical advantages of being high in transmission efficiency and high in anti-noise capacity.
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Description

technical field

[0001] The invention relates to the technical field of communication technology, in particular to a high-noise-resistant P-bit optical transmission method based on multiple probability distributions. Background technique

[0002] With the rapid growth of Internet services and emerging bandwidth applications, traffic in data center networks, access networks and fiber optic backbone networks has grown exponentially in recent years, and this trend is expected to continue in the foreseeable future. However, previous research has shown that the transmission capacity of single-mode fiber is rapidly approaching its fundamental Shannon limit. In order to break through the capacity limitation of single-core single-mode fiber, researchers have introduced multi-core fiber and few-mode fiber in terms of spatial multiplexing. The ultra-high capacity space division multiplexing (SDM) can make the transmission capacity of the optical transmission system reach P bit level. ...

Claims

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