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

A high-sensitivity receiving method of a bluetooth receiver in coded mode

A high-sensitivity and receiving method technology, applied in the high-sensitivity receiving field in the coded mode of the Bluetooth receiver, can solve the problems of poor sensitivity of the Bluetooth receiver, and achieve the effect of reducing the computational complexity and improving the demodulation performance.

Active Publication Date: 2021-12-03
NANJING QINHENG MICROELECTRONICS CO LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Purpose of the invention: In order to solve the problem of poor sensitivity of the Bluetooth receiver in the 5.0 coded mode in the prior art, the present invention provides a high-sensitivity receiving method in the coded mode of the Bluetooth receiver

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
  • A high-sensitivity receiving method of a bluetooth receiver in coded mode
  • A high-sensitivity receiving method of a bluetooth receiver in coded mode
  • A high-sensitivity receiving method of a bluetooth receiver in coded mode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0050] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0051] A bluetooth receiver includes a processor, a memory, and a software program stored in the memory and executable by the processor. When the processor executes the software program, the following high-sensitivity receiving method in the coded mode of the bluetooth receiver can be realized.

[0052] The high-sensitivity receiving method in the coded mode of the Bluetooth receiver, such as Figure 4 , including the following steps:

[0053] Step 1. Sampling the received signal. Since the frame header part is composed of 10 repeated "00111100" symbol sequences, the regular repetition of the frame header part can be used for signal detection, so that the receiver can detect the frame in the received signal. header information. In the process of detecting the frame header, the result of the summation of the difference of the sampling points c...

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 high-sensitivity receiving method of a bluetooth receiver in coded mode. In the synchronous capture stage, the frame header is detected by utilizing the signal repetition characteristic in the frame header format, and the total frequency offset estimation value is obtained through two frequency offset estimations. , and determine the position of the subsequent access code; in the synchronous tracking stage, a frequency offset tracking loop is proposed to track the residual frequency offset based on the pseudo-random characteristics of signal transmission by using the characteristics of Bluetooth signal using GMSK constant envelope modulation, Finally, the receiver can correctly compensate the frequency offset, so that the receiver can use quasi-coherent demodulation to improve the demodulation performance of the GMSK signal. The present invention can realize the synchronous capture of signals in the scene of large frequency offset and low signal-to-noise ratio, even if the signal-to-noise ratio is as low as 0dB, the correct frequency offset estimation value and sampling position estimation value can be obtained, and after capturing the signal , can continuously track the signal frequency and lay the foundation for signal demodulation.

Description

technical field [0001] The invention belongs to the technical field of wireless communication, and in particular relates to a high-sensitivity receiving method in a coded mode of a bluetooth receiver. Background technique [0002] Compared with the uncoded mode, the Bluetooth 5.0 coded mode is to extend the transmission distance, and the formats of the Preamble (hereinafter referred to as the frame header) and the PDU part have been modified. The Preamble part is composed of 10 repeated "00111100" symbol sequences, and the PDU part is added with an error correction code with a code rate of 1 / 8 or 1 / 2. For this reason, a receiving method different from the uncoded mode is required to improve the sensitivity of the receiver and extend the communication distance. How to solve the problem of affecting the sensitivity of the receiver due to the decrease of the received signal strength and the decrease of the signal-to-noise ratio due to the distance extension under the same tran...

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): H04L27/26H04W4/80
CPCH04L27/2657H04W4/80
Inventor 刘德良
Owner NANJING QINHENG MICROELECTRONICS CO LTD
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