Transform Domain Iterative Very Low Speed ​​Transceiver

A transceiver device and transform domain technology, applied in the field of scattering communication, can solve problems such as interference, transceiver interference, synchronization difficulties, etc., and achieve the effect of reducing the noise floor and eliminating signal interference

Active Publication Date: 2019-11-05
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For ultra-long-distance troposcatter communication and ionospheric scatter communication, due to the long communication distance and low transmission rate, ultra-long-distance ultra-low-speed communication mainly faces serious interference, including transceiver interference, weak signal, difficult synchronization, and serious frequency offset.

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
  • Transform Domain Iterative Very Low Speed ​​Transceiver
  • Transform Domain Iterative Very Low Speed ​​Transceiver
  • Transform Domain Iterative Very Low Speed ​​Transceiver

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0016] Attached below figure 1 , attached figure 2 And attached image 3 The present invention is described in further detail.

[0017] figure 1 It is a block diagram of the electrical principle of information transmission in the present invention, including a signal buffer 1, a sending pulse generator 2, a shaping transmitter 3, a D / A converter 4, a sending intermediate frequency amplifier 5, a receiving intermediate frequency amplifier 6, and an A / D converter 7. Dual domain cycle recovery and transceiver calibrator 8. Transform domain iterative very low speed demodulator 9, power supply 10 and clock unit 11;

[0018] The signal buffer 1 receives and sends information, stores the sending information for a period of time, and then sends it to the shaping transmitter 3 according to the frame or group; the sending pulse generator 2 generates local clock information according to the frame structure design and the locally analyzed sending and receiving information calibration ...

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

For ultra-long-distance troposcatter communication and ionospheric scatter communication, due to the long communication distance and low transmission rate, ultra-long-distance extremely low-speed communication mainly faces problems such as serious interference (including transceiver interference), weak signal, difficult synchronization, and serious frequency offset. The invention discloses a very low-speed transceiving device for transform domain iteration, which adopts self-adaptive notch filter, dual-domain period recovery and transceiving calibration algorithm, solves the bidirectional self-synchronization problem of transceiving, does not need to rely on external synchronous signal, and supports both FDD and TDD. It adopts transform domain iterative technology to eliminate narrowband and broadband interference in the received signal, and uses sliding matching and iterative operation of variable bandwidth comb filter to reduce noise floor and adaptively compensate frequency offset, which improves the receiving threshold of the system. Reduced dependence on high-stable reference clocks; supports TDD communication mode, effectively avoids transceiver interference, reduces system complexity, and expands system application scenarios.

Description

technical field [0001] The invention relates to the field of scattering communication, and in particular discloses a transform domain iterative very low-speed transceiver device, which is especially suitable for very low-speed signal detection under ionospheric scattering channels. Background technique [0002] Scattering communication plays a very important role in complex battlefields due to its advantages of reliable and long-term channel resources, no need to pay, strong three resistance capabilities, and high transmission reliability. For ultra-long-distance troposcatter communication and ionospheric scatter communication, due to the long communication distance and low transmission rate, ultra-long-distance extremely low-speed communication mainly faces problems such as serious interference, including transceiver interference, weak signal, difficult synchronization, and serious frequency offset. The invention discloses a very low-speed transceiving device for transform ...

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): H04B1/10H04B1/12H04B1/40
CPCH04B1/1027H04B1/1036H04B1/123H04B1/40H04B2001/1063
Inventor 沈斌松温亚萍
Owner NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap