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A wireless communication method over optical fiber based on iterative hexagonal constellation forming

A light-borne wireless communication, hexagonal technology, applied in the field of communication, can solve the problems that are difficult to realize, and achieve the effect of increasing the transmission rate, increasing the European distance, and good transmission performance

Active Publication Date: 2022-03-15
NANJING UNIV OF INFORMATION SCI & TECH
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Problems solved by technology

In order to reduce the impact of optical fiber nonlinear effects on communication systems, one way is to upgrade optical fibers and transceivers, but this method is very difficult to achieve

Method used

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  • A wireless communication method over optical fiber based on iterative hexagonal constellation forming
  • A wireless communication method over optical fiber based on iterative hexagonal constellation forming
  • A wireless communication method over optical fiber based on iterative hexagonal constellation forming

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Embodiment Construction

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

[0034] Such as figure 1 As shown, taking the 32QAM format as an example, the present invention is a wireless communication method based on hexagonal constellation forming iterations. At the input end, the original signal is converted into six binary data streams through serial-to-parallel conversion. For the generated binary data The stream is identified, and the identified signal is added with a label; the processed signal is compressed by a probability matcher, and the 32QAM constellation diagram is compressed into a 25QAM constellation diagram, so as to improve the occurrence probability of constellation points with low energy and reduce The role of the probability of the appearance of constellation points with lower energy; the signal after constellation compression is iterated successively to obtain the optimal constellation compression ra...

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Abstract

The invention discloses a wireless communication method based on hexagonal constellation forming iteration, which comprises the following steps: at the input end, the original signal is converted into multiple binary data streams through serial-to-parallel conversion, and the binary data streams are identified and labeled. ;Constellation compression is performed on the processed signal through a probability matcher, and the 32QAM constellation diagram is compressed into a 25QAM constellation diagram; the constellation compressed signal is iterated successively to obtain the optimal constellation compression ratio, and then constellation mapping is performed to obtain a 19QAM constellation diagram ; The signal after the constellation mapping is modulated into two optical signals with different frequency bands through the modulator, and then enters the optical fiber amplifier to adjust the signal power, and then transmits to the optical attenuator through the single-mode optical fiber for processing, and the photoelectric converter performs the optical signal to the electrical signal. Signal conversion, electric power amplifier adjusts the power of the electric signal, and finally performs wireless transmission; at the receiving end, the received signal is sequentially subjected to constellation demapping, analog-to-digital conversion, and parallel-to-serial conversion to obtain the original data.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a wireless communication method over light based on hexagonal constellation forming iterations. Background technique [0002] The advent of the 5G era is also driving the development of future wireless communications towards new services such as multimedia mobile communications, such as high-definition video services, distance learning office and television. However, in the process of wireless channel transmission, there are problems such as large power loss and lack of frequency spectrum, and it is difficult to meet the requirements of various new multimedia mobile services. [0003] The nonlinear effects of optical fiber include: scattering effect (stimulated Brillouin scattering SBS and stimulated Raman scattering SRS, etc.), self-phase modulation SPM closely related to refractive index, cross-phase modulation XPM, four-wave mixing effect FWM, etc. , especia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B10/2575H04B10/2543H04B10/516H04B10/54H04B10/556H04L27/34
CPCH04B10/2575H04B10/2543H04B10/5161H04B10/541H04B10/5561H04L27/3405
Inventor 刘博张丽佳毛雅亚马璐微忻向军孙婷婷赵立龙吴永锋刘少鹏宋真真王俊锋哈特
Owner NANJING UNIV OF INFORMATION SCI & TECH
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