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

A Non-Malicious Interference Suppression Method for Satellite Communication Based on Decision Feedback Adaptive Cancellation

A technology of interference suppression and satellite communication, applied in the field of satellite communication, to achieve the effect of suppressing non-malicious interference, strong adaptability and reducing damage

Active Publication Date: 2022-07-08
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, for satellite communication system applications, it is inevitable to face resource conflicts or interference from other system signals

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 Non-Malicious Interference Suppression Method for Satellite Communication Based on Decision Feedback Adaptive Cancellation
  • A Non-Malicious Interference Suppression Method for Satellite Communication Based on Decision Feedback Adaptive Cancellation
  • A Non-Malicious Interference Suppression Method for Satellite Communication Based on Decision Feedback Adaptive Cancellation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0035] The technical solutions of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0036] A non-malicious interference source suppression method based on decision feedback adaptive cancellation, comprising:

[0037] (1) The interference suppression method is based on the digital processing after ADC sampling, and realizes interference detection for the received wideband signal;

[0038] (2) Realize the reconstruction of the interference signal through the "demodulation + modulation" architecture, and use the polynomial model to construct the nonlinear component of the interference;

[0039] (3) Take the reconstructed interference signal as a reference, subtract the delayed received mixed signal, and use the iterative variable-step minimum mean square algorithm to perform adaptive cancellation;

[0040] (4) In the adaptive cancellation convergence state, the error signal output by cancellation can be ...

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

The invention discloses a non-malicious interference suppression method for satellite communication based on decision feedback adaptive cancellation, and belongs to the technical field of satellite communication. The method utilizes the advantage of easy access to prior knowledge of frequency and bandwidth for non-malicious interference, which can effectively solve the problem of suppressing non-malicious interference in the frequency domain overlapping in satellite communication, and is suitable for spread-spectrum and non-spread-spectrum satellite communication transmission chains with different modulation methods. road. The interference suppression method has no special requirements on the modulation mode and spread spectrum processing of satellite communication signals, can be applied to different satellite communication transmission links, and has strong adaptability.

Description

technical field [0001] The invention belongs to the technical field of satellite communication, in particular to a non-malicious interference suppression method for satellite communication based on decision feedback adaptive cancellation, which can be used for spread spectrum and non-spread spectrum satellite communication transmission systems of different modulation modes. Background technique [0002] At present, satellite communication has been widely used because of its advantages such as long communication distance and no geographical restrictions. At the same time, satellite communication covers multiple frequency bands from UHF, S, X, Ku and Ka, and the frequency range can reach dozens of GHz. Due to the wide working frequency band of satellite communication and the openness of the transmission channel, its transmission link will inevitably face non-malicious strong interference from other systems or users, which will deteriorate the link transmission performance, amo...

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): H04B7/185
CPCH04B7/18513Y02D30/70
Inventor 刘建成王赛宇潘申富王延鹏
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP