Unlock instant, AI-driven research and patent intelligence for your innovation.

A multi-carrier multivariate differential chaotic shift keying noise suppression system and method

A noise suppression and shift keying technology, which is applied in the modulation carrier system, multi-frequency code system, transmission system, etc., can solve the adverse effects of noise and other problems, improve BER performance, improve bit error rate performance, and broad application prospects Effect

Active Publication Date: 2021-10-29
XIAMEN UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to solve the problems that the existing multi-carrier multi-differential chaotic shift keying system is adversely affected by noise in wireless channels, etc., and provide a reference signal that can reduce the influence of channel noise in the system's reference signal and information bearing signal, thereby improving the system. A multi-carrier multivariate differential chaotic shift keying noise suppression system and method with excellent BER performance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A multi-carrier multivariate differential chaotic shift keying noise suppression system and method
  • A multi-carrier multivariate differential chaotic shift keying noise suppression system and method
  • A multi-carrier multivariate differential chaotic shift keying noise suppression system and method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the following embodiments will further illustrate the present invention in conjunction with the accompanying drawings.

[0050] figure 1 Shown is a block diagram of the JTR-NS-MC-MDCSK system. The system of the present invention includes a transmitting end and a receiving end. The transmitting end includes a chaotic signal generator, a serial / parallel converter, a bit / symbol converter, a multivariate DCSK modulator, a pulse shaping filter, a multiplier and an adder, and the receiving end includes a matched filter, a sampling module, Take averaging block, noise suppression block and multivariate DCSK modulator.

[0051] The specific working process of the system is as follows:

[0052] At the transmitting end, one of the subcarriers is used to transmit reference signals, and U subcarriers are used to transmit multiple information. The trans...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A multi-carrier multiple differential chaos shift keying noise suppression system and method belongs to the field of noise suppression in wireless communication technology. The transmitting end of the system includes a chaotic signal generator, a serial / parallel converter, a bit / symbol converter, a multivariate DCSK modulator, a pulse shaping filter, a multiplier and an adder; the receiving end includes a matched filter, a sampling module, and an averaging module , noise suppression module and multiple DCSK modulator. At the receiving end, the correlation coefficient between the received reference signal and the information-carrying signal is used as the weighting factor, and it is used as feedback to update the previous reference signal and information-carrying signal and suppress the noise in the transmission signal, and the computer simulation is used to verify the proposed method. effectiveness. In the additive Gaussian white noise channel and multipath fading channel, the noise in the transmission signal is significantly reduced, and the bit error rate performance of the system is improved. It has broad application prospects in future wireless communication applications.

Description

technical field [0001] The invention belongs to the field of noise suppression in wireless communication technology, and in particular relates to a multi-carrier multiple differential chaos shift keying noise suppression system and method. Background technique [0002] The inherent broadband, aperiodic and noise-like characteristics of chaotic signals make them have broad application prospects in spread spectrum communication and secure communication. Therefore, chaotic communication with chaotic signal as the carrier has been extensively studied in the field of wireless communication. Scholars at home and abroad have proposed many chaotic communication systems. One of the important modulation schemes is Differential Chaos Shift Keying (DCSK). . The DCSK system can realize a simple receiver without channel state information (Channel State Information, CSI), so the system does not need channel estimation and chaos synchronization at the receiving end. However, the DCSK syst...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/00H04L27/26
CPCH04L27/001H04L27/2626H04L27/2627H04L27/2647H04L27/2649
Inventor 徐位凯任华荣蔡相明王琳
Owner XIAMEN UNIV