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Differential chaotic communication method and system based on polarization codes

A technology of chaotic communication and polar code, which is applied in the field of communication, can solve the problems of poor bit error rate performance and limited range of use of chaotic modulation technology, and achieve the effect of avoiding multiplication operations, reducing hardware resource overhead, and improving decoding performance

Inactive Publication Date: 2020-02-25
FUZHOU UNIV
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Problems solved by technology

In a complex channel transmission environment, the bit error rate performance is still poor
To a certain extent, this has caused the use of chaotic modulation technology to be limited, so there is still room for further improvement

Method used

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  • Differential chaotic communication method and system based on polarization codes
  • Differential chaotic communication method and system based on polarization codes
  • Differential chaotic communication method and system based on polarization codes

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Embodiment Construction

[0049] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is carried out on the premise of the technical solution of the present invention, and detailed implementation methods and specific operation processes are given, but the protection scope of the present invention is not limited to the following embodiments.

[0050] The invention provides a polar code-based differential chaos communication method, which includes an output signal encoding and modulation process and a received signal demodulation and decoding process. The output signal encoding and modulation process is: after the signal is generated by the source, it is input into a polar code encoder for encoding, and the polar code encoder generates channel polarization through channel combination and channel splitting, and uses channel polarization to divide the channel into Noise channel and noise-free channel, so that...

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Abstract

The invention relates to a differential chaotic communication method and system based on polarization codes. The method comprises a coding modulation process and a demodulation decoding process. The code modulation process comprises the following steps: after a signal source generates a signal, inputting the signal into a polarization code encoder for encoding, then sending a code word encoded bya polarization code into a DDCSK-WC modulator for chaotic modulation, redesigning a data frame by utilizing an orthogonal Walsh code, and sending the redesigned data frame; wherein the demodulation and decoding process comprises the steps that after a receiving end receives a signal, a DDCSK-WC demodulator demodulates the received signal, soft information obtained through demodulation is input into a polarization code decoder, the polarization code decoder decodes the soft information through an SC decoding algorithm based on an MS algorithm, and finally a decoding result is obtained. According to the method and the system, the information transmission rate and performance of communication are improved, and the calculation complexity and the implementation cost are reduced.

Description

technical field [0001] The invention relates to the technical field of communication, in particular to a polar code-based differential chaotic communication method and system. Background technique [0002] Chaos is an important branch of nonlinear science and an important research direction of natural science and communication. Chaotic signals have the advantages of good autocorrelation and cross-correlation, noise-like, aperiodicity, and wide spectrum. These advantages can well meet the needs of communication security, spread spectrum, and information transmission. The field has good development prospects. Compared with the traditional sine wave as the carrier, the design of the communication system with the chaotic signal as the carrier not only further improves the security of information, but also makes the designed circuit simpler and convenient for mass production. At the same time, it has good communication performance in a multi-user access environment. In the 5G ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04L27/00
CPCH04L1/0057H04L27/001
Inventor 陈平平欧建辉朱子熹刘惠燕谢肇鹏
Owner FUZHOU UNIV
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