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

Single carrier frequency domain balanced transmission system for remote unmanned aerial vehicle image transmission

A single-carrier frequency domain and transmission system technology, applied in transmission systems, modulated carrier systems, digital transmission systems, etc., can solve the problems of low bandwidth utilization, inability to take into account bandwidth utilization and wireless communication system performance, etc., to achieve the number of control points , reduce channel estimation, and improve the effect of transmission efficiency

Active Publication Date: 2021-07-16
NAT SPACE SCI CENT CAS
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] For the existing single carrier equalization (SC-FDE) technology in the existing burst transmission mode, the transmission data frame bandwidth utilization rate is low, and the bandwidth cannot be taken into account Insufficient utilization and wireless communication system performance, a new frame structure is proposed, which increases the length of effective data, improves bandwidth utilization and system transmission rate

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
  • Single carrier frequency domain balanced transmission system for remote unmanned aerial vehicle image transmission
  • Single carrier frequency domain balanced transmission system for remote unmanned aerial vehicle image transmission
  • Single carrier frequency domain balanced transmission system for remote unmanned aerial vehicle image transmission

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] Such as Figure 5 As shown, Embodiment 1 of the present invention provides a single carrier frequency domain equalization transmission system for remote drone graphics. The system includes: deploying a sender on the drone and a receiving end deployed on the ground; where

[0055] The transmitting end is configured to encode and modulate the acquired binary graphics signal to obtain a symbol sequence, and block the symbol sequence simultaneously insert a unique word as a cyclic prefix, encapsulate data frames of custom format and transmit;

[0056] The receiving end is configured to receive a channel-transmitted data frame, perform a decomposition processing, and perform time-frequency synchronization, FFT transformation, frequency domain equalization, and IFFT transformation, and decompose and decode it. The information sequence of the drone map. The receiving end sets the synchronization module, the decomposition module, the time-frequency transform, and the frequency domai...

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 belongs to the field of unmanned aerial vehicle wireless communication, and particularly relates to a single-carrier frequency domain balanced transmission system for remote unmanned aerial vehicle image transmission, and the system comprises a transmitting end disposed on an unmanned aerial vehicle and a receiving end disposed on the ground, wherein the transmitting end is used for coding and modulating a collected binary image transmission signal to obtain a symbol sequence, blocking the symbol sequence, inserting a unique word as a cyclic prefix, packaging the symbol sequence into a data frame in a self-defined format, and transmitting the data frame; and the receiving end is used for receiving the data frame transmitted through the channel, performing time-frequency synchronization and frame decoding processing, performing FFT (Fast Fourier Transform), frequency domain equalization and IFFT (Inverse Fast Fourier Transform) after removing a cyclic prefix, and then performing demodulation and decoding processing to obtain an information sequence transmitted by an image of the unmanned aerial vehicle. According to the data frame structure in the self-defined format, the length of effective data is increased, and the transmission efficiency of the effective data is greatly improved.

Description

Technical field [0001] The present invention belongs to the field of drone wireless communication, and more particularly to a single carrier frequency domain equalization transmission system for remote drone graphics. Background technique [0002] The drone communication system belongs to a typical wireless communication system. When transmission, the communication distance is far, the terrain is complex, the mobile speed of the mobile station can cause serious multipath fading, thus generating the performance of the wireless communication system. Larger impact reduces the reliability of drone communication. The commonly used methods of counterming multipath fading mainly have OFDM, SC-TDE, SC-FDE. The SC-FDE system has the advantage of single carrier and orthogonal frequency division multiplexing (OFDM), while avoiding the symbol crosstalk while avoiding multi-carrier transmission technology peaks (PARA) high, sensitivity to frequencies, etc. Disadvantages. [0003] The data in ...

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): H04L25/02H04L25/03H04L27/26
CPCH04L25/0202H04L25/03159H04L27/2627H04L27/2655H04L27/265Y02D30/70
Inventor 边慧颖张德海刘鹏
Owner NAT SPACE SCI CENT CAS
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