Broadcast channel searching method and device, equipment terminal and storage medium

A search method and channel technology, applied in the field of broadcast communication, can solve problems such as poor channel quality, achieve the effect of reducing quantity, reducing channel interference, and improving channel quality

Active Publication Date: 2021-08-27
ZHUHAI JIELI TECH
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of this, the present application provides a search method for a broadcast channel to solve the technical problem that the exi

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
  • Broadcast channel searching method and device, equipment terminal and storage medium
  • Broadcast channel searching method and device, equipment terminal and storage medium
  • Broadcast channel searching method and device, equipment terminal and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] In the process of traditional FM broadcast channel search, the usual process is to set the carrier frequency to the frequency of the channel for reception, and then move the received RF signal to a low-IF signal, and then perform zero-frequency migration processing after passing through a low-pass filter , and then perform statistics on the signal power and noise power to calculate the signal-to-noise ratio, and when the signal-to-noise ratio is greater than a preset signal-to-noise ratio threshold, it is determined that there is an effective broadcast station channel in the broadcast channel.

[0063] However, due to the characteristics of FM broadcast users, the location of the FM broadcast transmitter station is fixed, while the FM broadcast receiving equipment will change continuously due to the distance required by the user. Under the condition of constant noise interference, the RF received signal is too small so that the signal-to-noise ratio cannot reach the pres...

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 relates to a broadcast channel searching method and device, an equipment terminal and a storage medium, and the searching method comprises the steps: determining a target intermediate frequency signal corresponding to a current radio frequency point according to a plurality of preset intermediate frequency points, acquiring the signal average power of a target intermediate frequency signal corresponding to the current radio frequency point in a preset power spectrum window and the signal average power and the noise average power corresponding to the previous adjacent radio frequency point; calculating a difference value between the signal average power corresponding to the current radio frequency point and the signal average power corresponding to the previous adjacent radio frequency point, and judging whether the difference value is greater than a preset signal power threshold value or not; if yes, calculating an absolute value of a difference value between the signal average power corresponding to the current radio frequency point and the noise average power corresponding to the previous adjacent radio frequency point, and judging whether the absolute value of the difference value is smaller than a preset noise power threshold value or not; and if yes, taking the broadcast channel corresponding to the current radio frequency point as the target broadcast frequency. According to the searching method, the channel quality of the searched target broadcast channel is improved.

Description

technical field [0001] The present application relates to the technical field of broadcast communication, and in particular to a search method, device, device terminal and storage medium for broadcast channels. Background technique [0002] At present, FM broadcast receiving devices are very popular, such as vehicle-mounted broadcast receiving equipment, etc., and the FM broadcast receiving device can receive corresponding audio signals after adjusting to a corresponding frequency. [0003] Among them, by querying the local radio broadcast full channel list to determine the forbidden channel interval, select the channel outside the forbidden channel interval as the broadcast transmission channel, thereby setting the transmission frequency of the FM transmission part of the station, which can automatically avoid other local broadcast channels, preventing The set transmission frequency conflicts with the local broadcast channel. [0004] However, even if the above measures ar...

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): H04W48/16H04B17/309H04B17/336H04B17/382
CPCH04W48/16H04B17/336H04B17/382H04B17/309Y02D30/70
Inventor 钟贤耀余鑫
Owner ZHUHAI JIELI TECH
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