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

Method and device for mitigating co-channel interference between ngso communication constellations based on interference alignment

A technology of interference alignment and co-frequency interference, which is applied in the field of wireless satellite communication, can solve the problem of unsatisfactory mitigation effect and achieve the effect of spectrum coexistence

Active Publication Date: 2022-07-26
UNIV OF SCI & TECH BEIJING
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method and device for mitigating co-channel interference between NGSO communication constellations based on interference alignment, using the precoding technology in interference alignment and the minimum mean square error detection (Minimum Mean Square Error, MMSE) algorithm for equalizing noise To jointly solve the problem of co-channel interference between NGSO communication constellations; to solve the technical problem that the existing signal-level segmentation technology is not ideal for mitigating co-channel interference between NGSO communication constellations in the scenario where NGSO communication constellations coexist

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
  • Method and device for mitigating co-channel interference between ngso communication constellations based on interference alignment
  • Method and device for mitigating co-channel interference between ngso communication constellations based on interference alignment
  • Method and device for mitigating co-channel interference between ngso communication constellations based on interference alignment

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0032] This embodiment aims to propose an interference mitigation method for spectrum coexistence between NGSO communication constellations based on the interference alignment method in multi-cell communication. The purpose is to propose a method for mitigating co-channel interference in the spectrum coexistence scenario of NGSO communication constellations from the perspective of signal segmentation. Methods.

[0033] The method provided in this embodiment utilizes the interference alignment technology in multiple cells of a terrestrial cellular network to solve the problem of co-channel interference between NGSO communication constellations. Among them, interference alignment is an effective method to eliminate signal interference. The precoding technology is used to process the signal at the transmitter first, so that the interference signal is more directional and reduces the occupied channel capacity, so that the interference can be weakened or even eliminated. effect on...

no. 2 example

[0083] This embodiment provides a device for co-channel interference mitigation between NGSO communication constellations based on interference alignment, and the device for co-channel interference mitigation between NGSO communication constellations based on interference alignment includes the following modules:

[0084] The transmitter precoding module is used to use the interference alignment technology in the multi-cell terrestrial cellular network to precode the transmitted signal at the transmitter, so that the interference signal overlaps at the receiver, compresses the space of the interference signal, and makes the target signal and the interference signal. It is separated at the receiving end and received in different signal spaces in order to recover the target signal;

[0085] The receiving end noise power control module is used to detect the MMSE algorithm at the receiving end through the minimum mean square error, aiming at minimizing the mean square error between...

no. 3 example

[0088] This embodiment provides an electronic device, which includes a processor and a memory; wherein, at least one instruction is stored in the memory, and the instruction is loaded and executed by the processor to implement the method of the first embodiment.

[0089] The electronic device may vary greatly due to different configurations or performances, and may include one or more processors (central processing units, CPU) and one or more memories, wherein the memory stores at least one instruction, so The instructions are loaded by the processor and execute the above method.

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 method and device for mitigating co-frequency interference between NGSO communication constellations based on interference alignment. By precoding the transmitting end, the interfering signals overlap at the receiving end, compressing the space of the interfering signals, so that the target signal and the interfering signal are in the same frequency. The receiving end is separated and received in different signal spaces, so as to achieve effective recovery of the target signal. The receiver uses the MMSE algorithm to solve the problem of excessive noise power caused by interference mitigation. The present invention transforms the problem of co-frequency interference in the interference scenario between NGSO communication constellations into the problem of feature signal extraction. The signal is processed in the signal space through the signal transformation mechanism, so that the interference part is aligned into a compressed signal subspace, and the target signal can be transmitted in the orthogonal subspace, which increases the spatial degree of freedom of the target signal . Finally, spectrum coexistence between NGSO constellations is realized.

Description

technical field [0001] The invention relates to the technical field of wireless satellite communications, and in particular to a method for mitigating co-frequency interference between NGSO communication constellations based on interference alignment in the scenario where non-Geostationary Satellite Orbit (NGSO) communication constellations coexist and device. Background technique [0002] In recent years, satellite communication has developed rapidly. Compared with the communication system of Geostationary Earth Orbit Satellite (GSO), the NGSO communication system has smaller link propagation loss and lower transmission delay. Achieving seamless global coverage (including poles) has become a hot spot in the development of satellite communications. However, satellite frequency resources are limited. The International Telecommunication Union (ITU) implements the principle of "first boarding, first occupying" for frequency applications. Since countries are scrambling to launc...

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): H04B7/185H04B7/0456H04J11/00
CPCH04B7/18519H04J11/005H04B7/0456Y02D30/70
Inventor 张海君李家旺刘向南李伟杜冰
Owner UNIV OF SCI & TECH BEIJING
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

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com