Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Full-duplex radio-frequency self-interference suppression method and device

A suppression device and self-interference technology, applied in duplex signal operation, electrical components, transmission systems, etc., can solve the problems of restricting radio frequency self-interference suppression ability, residual self-interference signal, received signal self-interference, etc., to simplify the suppression process , Suppress self-interference signal, improve the effect of suppression accuracy

Inactive Publication Date: 2018-09-28
TSINGHUA UNIV
View PDF6 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the local transmission signal of the transceiver will cause serious self-interference to the local reception signal, and even drown the reception signal, in order to ensure normal full-duplex communication, it is necessary to effectively suppress the self-interference signal
[0003] However, the radio frequency self-interference suppression technology in the prior art usually extracts the local radio frequency transmission signal and reconstructs the self-interference signal through multiple parallel numerical control delayers and attenuators, and subtracts the self-interference from the local radio frequency reception signal. The self-interference estimation and reconstruction errors restrict the radio frequency self-interference suppression capability, causing the residual self-interference signal to enter the receiver together with the received signal

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
  • Full-duplex radio-frequency self-interference suppression method and device
  • Full-duplex radio-frequency self-interference suppression method and device
  • Full-duplex radio-frequency self-interference suppression method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0040] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0041] The full-duplex radio frequency self-interference suppression method and device according to the embodiments of the present invention will be described below with reference to the accompanying drawings. First, the full-duplex radio frequency self-interference suppression method according to the embodiments of the present invention will be described with reference to the accompanying drawings.

[0042] like figure 1 As shown, the specific process of the full-duplex radio frequency self-interference suppression method in the...

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 full-duplex radio-frequency self-interference suppression method and device, wherein the method comprises the steps of: obtaining locally transmitted radio-frequency signalsand locally received baseband analog signals, so that a self-interference channel model is established; reconstructing digital interference signals through digital excitation by utilizing the self-interference channel model, and converting the digital interference signals into analog self-interference signals through a DAC; and eliminating the analog self-interference signals from the locally received baseband analog signals, so that full-duplex radio-frequency self-interference suppression is completed. By means of the method, the self-interference signals in baseband analog received signalscan be effectively suppressed; the self-interference signal suppression process is simplified; and the suppression precision is improved.

Description

technical field [0001] The invention relates to the technical field of full-duplex interference suppression, in particular to a full-duplex radio frequency self-interference suppression method and device. Background technique [0002] At the same time, the same-frequency full-duplex technology can transmit and receive signals on the same frequency at the same time, which can theoretically double the spectral efficiency. However, since the local transmission signal of the transceiver will cause relatively serious self-interference to the local reception signal, or even drown the reception signal, in order to ensure full-duplex normal communication, it is necessary to effectively suppress the self-interference signal. [0003] However, the radio frequency self-interference suppression technology in the prior art usually extracts the local radio frequency transmission signal and reconstructs the self-interference signal through multiple parallel numerical control delayers and a...

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 Applications(China)
IPC IPC(8): H04B1/10H04L5/14
CPCH04B1/10H04L5/14
Inventor 张秀军周世东赵明肖立民
Owner TSINGHUA UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products