Novel photon probability mapping method based on terrace molding

A mapping method and probability technology, applied in the field of new photon probability mapping and mapping, can solve the problems of inflexibility of traditional PON, and achieve the effect of improving frequency band utilization, performance improvement, good bit error performance and anti-nonlinear performance.

Active Publication Date: 2019-03-26
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

However, the QAM modulation format still has a shaping gain of 1.53dB from Shannon's limit capacity, and the traditional P

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  • Novel photon probability mapping method based on terrace molding
  • Novel photon probability mapping method based on terrace molding
  • Novel photon probability mapping method based on terrace molding

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Embodiment Construction

[0033] The invention will be described in further detail below in conjunction with the accompanying drawings.

[0034] Detailed description of the new photon probability mapping process based on terrace formation

[0035] The process of performing photon probability mapping on the QAM constellation points after the Gaussian beam is terraced in the present invention is as follows: figure 1 shown. In the figure, the 64QAM modulation format is taken as an example. Gaussian beams are regulated by two-level terraced gradients to generate new beams, and then the new beams are used to modulate binary data into 64 points in the QAM constellation diagram.

[0036] The system components of a new photon probability mapping method based on terraced field forming in the present invention mainly include the following modules: probability matcher, Gaussian beam generation, spatial phase array, constellation mapping data projection, centralized convergence emission, photon signal pre-emphasi...

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Abstract

The invention relates to a novel photon probability mapping method based on terrace forming, which belongs to the technical field of mapping method. The method comprises the following steps: matchingaccording to channel conditions and generating an optimal Gaussian beam by a laser; performing probability matching by a probability matcher, and changing the shape of the Gaussian beam by a spatial phase array to obtain a novel beam formed in terrace; performing the 64QAM projection mapping on the data by the novel beam; concentrating and converging the 64 constellation point optical signals; performing pre-emphasis; amplifying the optical signals after passing through a channel, detecting by a photodetector, performing low-pass filter, orthogonalizing and normalizing, and performing data convergence and equalization; matching probabilistic solutions, removing step noise by wavelet transform analysis, performing constellation demapping; estimating channel conditions according to the received data, feeding back channel state information to the probability matcher, and performing real-time dynamic regulation on the probability matcher. The novel photon probability mapping method based on the terrace forming can effectively reduce the signal transmission power, reduces the bit error rate, improves the frequency band utilization, and lengthens the transmission distance.

Description

technical field [0001] The invention relates to a novel photon probability mapping method based on terrace forming, and belongs to the technical field of mapping methods. Background technique [0002] With the rapid development of information technology, the network traffic generated from video on demand, social media, cloud computing and other various network applications is growing rapidly. The Internet is still the bottleneck that limits the performance of the entire network. Therefore, in such an urgent situation, improving system capacity and transmission distance and realizing flexible and adjustable multi-rate access in the access network are the key issues that must be solved at present. Passive Optical Network (PON) technology is widely used in access networks due to its advantages of large capacity, simple structure and support for service transparency. With the development of digital signal processing (DSP) technology and the rapid progress of the bandwidth and ...

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Application Information

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IPC IPC(8): H04B10/54H04B10/556H04L27/34H04Q11/00
CPCH04B10/541H04B10/5561H04L27/3405H04Q11/0062H04Q2011/0086
Inventor 刘博张丽佳毛雅亚张颖忻向军哈特孙婷婷赵立龙王俊锋宋真真刘少鹏吴泳锋王凤姜蕾
Owner NANJING UNIV OF INFORMATION SCI & TECH
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