Ultra-wideband communication method based on time-frequency conversion and slippage correlation

An ultra-wideband communication and sliding-related technology, applied in the field of ultra-wideband communication using Dechirp and sliding-related structures, can solve the problems of high implementation complexity, poor accuracy and stability, inflexible parameter design, etc., to avoid channel estimation and strictness. synchronization requirements, guaranteeing accuracy and reliability, reducing the sampling rate and the effect of signal processing scale

Active Publication Date: 2011-11-23
THE PLA INFORMATION ENG UNIV
View PDF3 Cites 21 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this method can be implemented with low-cost, low-power SAW devices to obtain the required spread-spectrum gain to avoid the lack of dynamic range of the received signal, but because it is still an ultra-wideband signal after the pulse compression of the matched filter, it needs Using large dynamic range receivers, high sampling rate analog-to-d

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
  • Ultra-wideband communication method based on time-frequency conversion and slippage correlation
  • Ultra-wideband communication method based on time-frequency conversion and slippage correlation
  • Ultra-wideband communication method based on time-frequency conversion and slippage correlation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] Embodiment one: see figure 1 .

[0043] The present invention is based on the ultra-wideband communication method related to Dechirp and sliding, and at the transmitting end of the ultra-wideband communication system, the specific working steps are as follows:

[0044] A. Insert the pilot sequence in the sent data, and send the pilot sequence first before the system is synchronized;

[0045] B. Perform baseband modulation;

[0046] C. Perform chirp spread spectrum on the modulated signal, and output the chirp spread spectrum ultra-wideband transmission signal in the available radio frequency band;

[0047] At the receiving end of the ultra-wideband communication system, when performing synchronous capture, the specific working steps are as follows:

[0048] E. Generate all "1" sequence data and perform baseband modulation;

[0049] F. Carry out chirp spread spectrum on the modulated signal, and output the chirp spread spectrum ultra-wideband reference signal in the ...

Embodiment 2

[0059] Embodiment two: this embodiment combines Figure 1 to Figure 5 , to further describe the specific implementation of the present invention in detail.

[0060] 1. The overall design of the system model

[0061] For ultra-wideband extended distance communication, the present invention proposes an ultra-wideband communication method based on Dechirp and sliding correlation. A system model of a specific embodiment is introduced below. In this system model, it is assumed that the UWB channel remains constant within each frame period and changes between different frames. In order to evaluate the overall performance of the system, modules such as interleaving, channel coding, CRC check and rate control are omitted.

[0062] At the transmitting end of the ultra-wideband communication system, OOK modulation is first performed on the transmitted data, and then the pilot sequence used for rough synchronization, fine synchronization and SNR estimation is inserted, and the transmi...

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 an ultra-wideband communication method based on Dechirp and slippage correlation, comprising the following steps of: at a transmitting terminal of an ultra-wideband communication system, inserting a pilot sequence in sent data firstly; then, performing base-band modulation and linear frequency modulation and spread spectrum; outputting an ultra-wideband transmission signalat the linear frequency modulation and spread spectrum of an available radio frequency band; at a receiving terminal of the ultra-wideband communication system, firstly by using a slippage correlation method, completing synchronization of a received signal through adjusting the time delay of an ultra-wideband reference signal of the linear frequency modulation and spread spectrum; then, mixing the ultra-wideband reference signal of the linear frequency modulation and spread spectrum with the received signal, namely, performing Dechirp process; and finally, after filtering in low pass, demodulating the base band of the received signal. According to the ultra-wideband communication method, the sampling rate and the signal processing scale of the receiving terminal can be reduced; the synchronization precision requirements are not high; the complexity is very low; and the method is especially applicable for ultra-wideband expand distance low-speed communication with high spread spectrum gain.

Description

technical field [0001] The invention relates to an ultra-wideband communication method using linear frequency modulation spread spectrum, in particular to an ultra-wideband communication method adopting a Dechirp and sliding correlation structure. Background technique [0002] In February 2002, the U.S. Federal Communications Commission (FCC) approved ultra-wideband technology to enter the civilian field, and redefined ultra-wideband, stipulating that ultra-wideband signals are radios with -10dB fractional bandwidth greater than 20% or -10dB absolute bandwidth greater than 500MHz signal, and the radiation power spectral density in the main operating frequency band is limited below -41.3dBm / MHz. UWB technology is mainly used in communication systems, imaging systems, radar systems and measurement systems. Since 2002, new technologies have emerged continuously, and various system design schemes such as carrier-free ultra-wideband, single-carrier ultra-wideband, and multi-carr...

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
IPC IPC(8): H04B1/717H04B1/7183H04B1/7176
Inventor 赵亮刘双平禹春来季中恒黄开枝张剑刘洛琨金梁郭淑明陈金玉刘世刚杨梅樾赵华王拥军李向涛
Owner THE PLA INFORMATION ENG UNIV
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