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Wideband digital frequency-selecting wireless repeater system and wideband signal digital frequency-selecting method thereof

A wireless repeater and broadband signal technology, applied in radio relay systems, radio transmission systems, transmission systems, etc., can solve problems such as unfavorable product debugging and mass production, difficulty in adjusting the filtering characteristics of analog filters, and poor flexibility. Achieve the effect of facilitating system debugging and production, good applicability and scalability, and improving consistency

Inactive Publication Date: 2009-09-02
COMBA TELECOM SYST CHINA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] (1) The surface acoustic filter is required for frequency selection filtering processing. Since the surface acoustic filter is an analog device, the consistency of performance is not good, and the debugging is very difficult, which is not conducive to product debugging and mass production; (2) in wireless direct playback In the station system, multiple local oscillator signal reference sources are required. Due to the poor stability of the local oscillator signal generated by the analog device, frequency deviation is prone to occur, which leads to the deviation of the input and output frequency points of the system, and the repeater system is prone to frequency deviation. (3) The linearity of the analog multiplier is not good, the phase after mixing will change, and the difference needs to be compensated by the amplifier, thus introducing more active noise; (4) The analog filter The filtering characteristics are difficult to adjust and not easy to change with the needs of specific applications; (5) the product is large in size and heavy in weight, making it difficult to realize miniaturization and light weight design; (6) the design of analog hardware circuits with single function and poor flexibility The broadband wireless repeater system is difficult to adapt to the needs of today's different communication systems and multi-band wireless communication systems

Method used

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  • Wideband digital frequency-selecting wireless repeater system and wideband signal digital frequency-selecting method thereof
  • Wideband digital frequency-selecting wireless repeater system and wideband signal digital frequency-selecting method thereof
  • Wideband digital frequency-selecting wireless repeater system and wideband signal digital frequency-selecting method thereof

Examples

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Embodiment

[0044] like figure 2 As shown, the broadband digital frequency-selective wireless repeater system includes an uplink, a downlink, a repeater power supply subsystem and a repeater monitoring subsystem, and the uplink and downlink include a donor terminal duplexer , a mobile terminal duplexer, a donor antenna, and a retransmission antenna. The downlink also includes a downlink radio frequency receiver subsystem, a downlink broadband signal digital intermediate frequency processing subsystem, and a downlink radio frequency transmitter subsystem. The output end of the donor antenna passes through The duplexer, the downlink radio frequency receiver subsystem, the downlink broadband signal digital intermediate frequency processing subsystem, the downlink radio frequency transmitter subsystem, the donor terminal duplexer, and the mobile terminal duplexer are connected to the input end of the retransmission antenna; the uplink also It includes an uplink radio frequency receiver subsy...

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Abstract

The invention provides a wideband digital frequency-selecting wireless repeater system and a wideband signal digital frequency-selecting method thereof. The donor antenna output terminal of the systemThe invention provides a wideband digital frequency-selecting wireless repeater system and a wideband signal digital frequency-selecting method thereof. The donor antenna output terminal of the systemis connected with a retransmission antenna input terminal by an donor terminal diplexer, a downlink radio frequency receiver subsystem, a downlink wideband digital intermediate frequency processing s is connected with a retransmission antenna input terminal by an donor terminal diplexer, a downlink radio frequency receiver subsystem, a downlink wideband digital intermediate frequency processing subsystem, a downlink radio frequency transmitter subsystem, and a mobile terminal diplexer in sequence; a retransmission antenna output terminal is connected with a donor antenna input terminal by a mubsystem, a downlink radio frequency transmitter subsystem, and a mobile terminal diplexer in sequence; a retransmission antenna output terminal is connected with a donor antenna input terminal by a mobile terminal diplexer, an uplink radio frequency receiver subsystem, an uplink wideband digital intermediate frequency processing subsystem, an uplink radio frequency transmitter subsystem, and a doobile terminal diplexer, an uplink radio frequency receiver subsystem, an uplink wideband digital intermediate frequency processing subsystem, an uplink radio frequency transmitter subsystem, and a donor terminal diplexer in sequence. The invention can be applied to communication systems such as GSM, CDMA, DCS, JDC, TD-SCDMA, WCDMA, CDMA2000, and the like, thereby forming wideband digital frequencnor terminal diplexer in sequence. The invention can be applied to communication systems such as GSM, CDMA, DCS, JDC, TD-SCDMA, WCDMA, CDMA2000, and the like, thereby forming wideband digital frequency-selecting wireless repeater systems with different communication formats and any signal bandwidth.y-selecting wireless repeater systems with different communication formats and any signal bandwidth.

Description

technical field [0001] The invention relates to a wireless repeater, in particular to a broadband digital frequency selection wireless repeater system and a broadband signal digital frequency selection method. Background technique [0002] With the promotion and popularization of mobile communication networks such as GSM, CDMA, and TD-SCDMA, 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, which is prone to It is similar to failure phenomena such as dropped calls, crosstalk, poor voice quality, and difficulty in accessing the Internet. Facing the ever-increasing traffic demand, the network needs to be 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. Therefore...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/14H04B1/40H04B7/155
Inventor 胡应添张远见黄伯宁张跃军
Owner COMBA TELECOM SYST CHINA LTD
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