Multi-carrier digital receiver based on digital intermediate frequency and multi-carrier digital receive method

A digital receiver, digital intermediate frequency technology, applied in multi-carrier systems, electrical components, transmission systems, etc., can solve problems such as increased operating costs, and achieve the effects of eliminating local oscillator leakage, improving performance, and improving receiving sensitivity

Inactive Publication Date: 2009-03-04
COMBA TELECOM SYST CHINA LTD
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

With the development of mobile communication, the number of mobile communication users has increased sharply, operators have to expand th...

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
  • Multi-carrier digital receiver based on digital intermediate frequency and multi-carrier digital receive method
  • Multi-carrier digital receiver based on digital intermediate frequency and multi-carrier digital receive method
  • Multi-carrier digital receiver based on digital intermediate frequency and multi-carrier digital receive method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0043] Such as figure 2 As shown, the present invention is based on a digital intermediate frequency multi-carrier digital receiver, including a radio frequency receiving subsystem, an A / D converter, a digital baseband signal processing subsystem, an automatic frequency control subsystem, and a multi-carrier digital down-conversion subsystem, The output end of the radio frequency receiving subsystem is connected to the input end of the digital baseband signal processing subsystem through the A / D converter and the multi-carrier digital down-conversion subsystem in turn, and the input end of the automatic frequency control subsystem is connected to the digital baseband signal processing subsystem. The output end of the processing subsystem is connected, and the output end of the automatic frequency control subsystem is connected with the input end of the radio frequency receiving subsystem. It also includes a clock subsystem and a microchip control subsystem, the output ter...

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 multi-carrier digital receiver based on digital medium frequency, which comprises a radio frequency receiving subsystem, an A/D converter, a digital baseband signal processing subsystem, an automatic frequency control subsystem, and a multi-carrier digital down-conversion subsystem; wherein, the output terminal of the radio frequency receiving subsystem is connected with the input terminal of the digital baseband signal processing subsystem sequentially by the A/D converter and the multi-carrier digital down-conversion subsystem, the input terminal of the automatic frequency control subsystem is connected with the output terminal of the digital baseband signal processing subsystem, and the output terminal of the automatic frequency control subsystem is connected with the input terminal of the radio frequency receiving subsystem. The invention establishes the multi-carrier digital down-conversion subsystem by adopting the digital medium frequency technology and utilizing the multi-carrier signal processing method, thus avoiding the limitation of the traditional digital down-conversion subsystem and realizing the multi-carrier digital receiver system.

Description

technical field [0001] The invention relates to a digital receiver system, in particular to a digital intermediate frequency-based multi-carrier digital receiver and a multi-carrier digital receiving method. Background technique [0002] Traditional digital receiver systems based on digital IF technology (such as figure 1 shown) generally includes the radio frequency receiving subsystem, the digital intermediate frequency processing subsystem, the baseband signal processing subsystem and the background processing subsystem, etc. The radio frequency receiving subsystem realizes the conversion and processing of signals from RF to IF; the digital intermediate frequency processing subsystem realizes data processing from analog IF to digital baseband I and Q, and the baseband digital signal processing subsystem completes synchronization and demodulation processing, and background processing realizes communication Interface control, interface level conversion and interconnection ...

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): H04B1/16H04L27/38
Inventor 胡应添张远见杨林军张跃军
Owner COMBA TELECOM SYST CHINA LTD
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