Unlock instant, AI-driven research and patent intelligence for your innovation.

Method and device of acquiring frequency correction burst (FB)

A technology of pulse sequence and frequency band, applied in the field of communication

Active Publication Date: 2015-06-10
LEADCORE TECH
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In order to solve the problem in the prior art that one configuration can only be performed for one frequency point, the embodiment of the present invention provides a method and device for obtaining FB

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
  • Method and device of acquiring frequency correction burst (FB)
  • Method and device of acquiring frequency correction burst (FB)
  • Method and device of acquiring frequency correction burst (FB)

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The method and device provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0026] In the communication architecture, although each cell has its own FCCH channel, the FCCH is independent in the frequency domain because the frequency points of each cell are different. And because of the particularity of FB (for example, all of them are composed of "0" bits, and after being modulated by GMSK, it becomes a sine wave of 66.7KHz), its performance on the spectrum is also very prominent, among which, the reference of the baseband spectrum of the FB signal is wrong! Reference source not found. .

[0027] If a certain GSM signal does not have FB characteristics, after GMSK modulation, the spectrum of the baseband signal is as follows: Figure 4 shown, where WT b = 0.3.

[0028] For the GSM signal received for a period of time, if the bandwidth is limited within a certain range, or the obtained sp...

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 provides a method and a device of acquiring frequency correction burst (FB) of frequency correction burst impulse sequence. The method comprises dividing the frequency ranges of a global system for mobile communications (GSM), sampling the wireless signals received of each frequency range in sequence according to preset frequency points and bandwidth, confirming whether the sampled signals have FB characteristics in the frequency ranges according to the method, and recording corresponding frequency point information, time information and power information when the FB appears if the FB characteristics exist. The method and the device of acquiring the FB can accurately and fast acquire the FB, and creates conditions for fast synchronization of the cell of a terminal and the GSM.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for acquiring FB (Frequency correction Burst, frequency correction burst sequence). Background technique [0002] In the existing communication architecture, the synchronization signal of the GSM (Global System of Mobile communication, Global System for Mobile Communication) system is mainly composed of two parts, one is the FB carried on the FCCH (Frequency Correction CHannels, frequency correction channel), and the other is One is an SB (Synchronization Burst, synchronization burst) carried on an SCH (Synchronization CHannel, synchronization channel). The frequency position of FCCH and SCH is the main frequency point of the serving cell, and the time positions are respectively {0, 10, 20, 30, 40} and {1 , 11, 21, 31, 41} frames. [0003] Among them, the FB sequence structure is very simple, consisting of 148 all "0" bits, after Gaussian mini...

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): H04W56/00
Inventor 袁晓唐旭明齐天阳
Owner LEADCORE TECH