Multi-carrier digital frequency-selection radio frequency pulling system and signal processing method thereof

A digital radio frequency remote, radio frequency remote technology, applied in transmission systems, radio transmission systems, communication between multiple stations, etc., can solve the problem of poor performance consistency, poor SAW isolation of surface acoustic filters, Inconvenient system expansion and other issues
CN101453799AInactive Publication Date: 2009-06-10COMBA TELECOM SYST CHINA LTD
0 Cites 55 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
COMBA TELECOM SYST CHINA LTD
Publication Date
2009-06-10
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention provides a multi-carrier digital frequency-selecting remote system, which comprises a digital access control unit DAU and a digital radio remote unit DRU, wherein the digital access control unit DAU is connected with the digital radio remote unit DRU through optical fiber; the digital access control unit DAU comprises a DAU duplexer, a DAU downlink, a DAU photoelectric conversion subsystem, a DAU uplink, a DAU power subsystem and a DAU monitoring subsystem; the digital radio remote unit DRU comprises a DRU photoelectric conversion subsystem, a DRU downlink, a DRU duplexer and a DRU uplink; and the DRU monitoring subsystem and the DRU power subsystem are connected with the DRU uplink and the DRU downlink respectively. The system replaces a surface filter SAW with a digital intermediate-frequency processing technique in software radio, so as to keep a hardware platform unchanged, reduce the application of analog devices and guarantee the consistency of system performances while the number of carriers is increased / decreased at will.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a coverage system in the field of mobile communication, in particular to a multi-carrier digital frequency-selective radio remote system and a signal processing method thereof. Background technique

[0002] With the promotion and popularization of GSM, CDMA, PHS, TD-SCDMA and other mobile communication networks, the number of mobile communication users has increased sharply, and the traffic volume in the mobile network has also continued to increase, causing the communication network to be in an overloaded state. It is prone to failures such as dropped calls, crosstalk, poor voice quality, and difficulty accessing the Internet. Faced with the ever-increasing traffic demand, the network needs to be continuously expanded to meet the capacity and coverage requirements. The expansion method of cell splitting has its limitations. As the distance between stations approaches, the interference of the network is also increasing. Theref...

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