CN201004639Y - An intelligent frequency band selection repeater system based on digital intermediate frequency - Google Patents
An intelligent frequency band selection repeater system based on digital intermediate frequency Download PDFInfo
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- CN201004639Y CN201004639Y CNU2006201553718U CN200620155371U CN201004639Y CN 201004639 Y CN201004639 Y CN 201004639Y CN U2006201553718 U CNU2006201553718 U CN U2006201553718U CN 200620155371 U CN200620155371 U CN 200620155371U CN 201004639 Y CN201004639 Y CN 201004639Y
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
本实用新型公开了一种基于数字中频的智能型频段选频直放站系统，包括施主天线、用户天线、收发双工器、下行低噪声放大器、上行低噪声放大器、上行功率放大器、下行功率放大器、D/A变换器、A/D变换器、上行数字中频处理模块、下行数字中频处理模块、下变频模块和上变频模块。这种方案适用于GSM、WCDMA、TD－SCDMA等多种通信体制的直放站，也适用于无线、光纤等不同传输方式的直放站。
The utility model discloses an intelligent frequency band frequency selection repeater system based on digital intermediate frequency, comprising a donor antenna, a user antenna, a transceiver duplexer, a downlink low noise amplifier, an uplink low noise amplifier, an uplink power amplifier, and a downlink power amplifier , D/A converter, A/D converter, uplink digital intermediate frequency processing module, downlink digital intermediate frequency processing module, down-conversion module and up-conversion module. This solution is suitable for repeaters of various communication systems such as GSM, WCDMA, and TD-SCDMA, as well as repeaters of different transmission methods such as wireless and optical fiber.
Description
Technical field
The utility model relates to the direct discharging station design field, relates in particular to a kind of intelligent frequency range frequency selecting repeater system based on digital intermediate frequency.
Background technology
Along with the develop rapidly of mobile communication cause, each operator requires also to improve constantly to the covering of mobile network.Advantages such as it is low that the repeater has a cost, easy for installation are being improved the network coverage, and the network optimization and improve service quality improves the operation benefits aspect and plays an important role.The frequency range frequency selecting repeater carries out amplifying after the independent filtering to each frequency range again, and have outside the band and suppress, neighboring trace rejection ratio height, spuious product is few, the advantage that intermodulation product is little.Existing analog intermediate frequency frequency range frequency selecting repeater, the effect of its frequency range frequency-selecting module is that the uplink and downlink rf frequency is down-converted to intermediate frequency, after carrying out frequency-selecting and handling, carries out up-conversion again and reverts to the uplink and downlink rf frequency.Intermediate frequency filtering generally is to adopt Surface Acoustic Wave Filter to carry out filtering.Like this, carry out filtering to several frequency ranges will have several frequency range frequency-selecting modules, directly the drawback that produces be bulky, power consumption big, the heat radiation difficult, cost is high.Adopt several frequency range frequency-selecting modules also to exist consistency poor simultaneously, the difficulty that is difficult to debug.In addition, also have the problem of use aspect shortage flexibility, such as, if will be increased to 4 frequency ranges, can only add the frequency-selecting module from hardware from 2 frequency ranges, cost increases.
The utility model content
The purpose of this utility model is to overcome the shortcoming and the deficiency of prior art, a kind of intelligent frequency range frequency selecting repeater system based on digital intermediate frequency is provided, the utility model frequency range number has alternative, cost is low, low in energy consumption, heat radiation easily, structure is light, be easy to install and use.
The purpose of this utility model is achieved through the following technical solutions: the intelligent frequency range frequency selecting repeater system based on digital intermediate frequency comprises donor antenna, user antenna, duplexer, descending low noise amplifier, up low noise amplifier, ascending power amplifier, downlink power amplifier, D/A converter, A/D converter, upstream digital intermediate frequency process module, descending Digital IF Processing module, down conversion module and up-conversion module; Described donor antenna is connected to user antenna by duplexer, descending low noise amplifier, down conversion module, A/D converter, descending Digital IF Processing module, D/A converter, up-conversion module, downlink power amplifier, duplexer successively; Described user antenna is connected to donor antenna by duplexer, up low noise amplifier, down conversion module, A/D converter, upstream digital intermediate frequency process module, D/A converter, up-conversion module, ascending power amplifier, duplexer successively; Described descending Digital IF Processing module is connected to form successively by Digital Down Convert passage, digital filter, Digital Up Convert passage, and wherein the Digital Down Convert passage is connected with the A/D converter, and the Digital Up Convert passage is connected with the D/A converter; Described upstream digital intermediate frequency process module is connected to form successively by Digital Down Convert passage, digital filter, Digital Up Convert passage, and wherein the Digital Down Convert passage is connected with the A/D converter, and the Digital Up Convert passage is connected with the D/A converter.
Described descending Digital IF Processing module or upstream digital intermediate frequency process module are a plurality of, and described a plurality of descending Digital IF Processing modules or upstream digital intermediate frequency process module are connected with A/D converter, D/A converter simultaneously.
The relative prior art of the utility model has following advantage and effect:
1, because the band outside inhibitory of digital filter can be good, so the Frequency Band Selection of digital intermediate frequency is better than the Frequency Band Selection of analog intermediate frequency.
2, the frequency range number has alternative, can select to open several frequency ranges according to actual conditions, and the frequency range that need open is not done to turn-off and handled.This function only needs software setting, does not need hardware to change.
3, frequency range realizes removable function, can change the centre frequency of frequency range according to actual conditions.
4, according to actual needs, the passband of digital filter can be set, realize the requirement of bandwidth varying.
5, replace several simulation frequency-selecting modules with a digital ifd module, not only cost can decline to a great extent, power consumption can decline to a great extent, heat dissipation problem is easy to solve, structure can do and also light being easy to install and use.
6, be applicable to the repeater of multiple communication systems such as GSM, WCDMA, TD-SCDMA, also be applicable to the repeater of different transmission meanss such as wireless, optical fiber.
Description of drawings
Fig. 1 is that existing frequency range frequency selecting repeater system based on analog intermediate frequency realizes block diagram;
Fig. 2 is the intelligent frequency range frequency selecting repeater system architecture diagram of the utility model based on digital intermediate frequency.
Embodiment
Below in conjunction with embodiment and accompanying drawing the utility model is described in further detail, but execution mode of the present utility model is not limited thereto.
As shown in Figure 1, existing frequency range frequency selecting repeater system based on analog intermediate frequency is by donor antenna, rate amplifier, downlink power amplifier, uplink band frequency-selecting module, band downlink frequency-selecting module, power splitter, and mixer is formed.Downstream signal from the base station passes through donor antenna, duplexer, descending low noise amplifier, power splitter, band downlink frequency-selecting module, mixer, downlink power amplifier, duplexer successively, by user antenna the mobile subscriber is carried out signal at last and covers; Upward signal from the mobile subscriber sends to the base station to signal by user antenna, duplexer, up low noise amplifier, power splitter, uplink band frequency-selecting module, mixer, ascending power amplifier, duplexer successively.
As shown in Figure 2, the intelligent frequency range frequency selecting repeater based on digital intermediate frequency that the utility model provides comprises donor antenna, user antenna, duplexer, descending low noise amplifier, up low noise amplifier, ascending power amplifier, downlink power amplifier, D/A converter, A/D converter, upstream digital intermediate frequency process module, descending Digital IF Processing module, down conversion module and up-conversion module; Described donor antenna is connected to user antenna by duplexer, descending low noise amplifier, down conversion module, A/D converter, descending Digital IF Processing module, D/A converter, up-conversion module, downlink power amplifier, duplexer successively; Described user antenna is connected to donor antenna by duplexer, up low noise amplifier, down conversion module, A/D converter, upstream digital intermediate frequency process module, D/A converter, up-conversion module, ascending power amplifier, duplexer successively; Described descending Digital IF Processing module is connected to form successively by Digital Down Convert passage, digital filter, Digital Up Convert passage, and wherein the Digital Down Convert passage is connected with the A/D converter, and the Digital Up Convert passage is connected with the D/A converter; Described upstream digital intermediate frequency process module is connected to form successively by Digital Down Convert passage, digital filter, Digital Up Convert passage, and wherein the Digital Down Convert passage is connected with the A/D converter, and the Digital Up Convert passage is connected with the D/A converter.
The downstream signal that sends from the base station is after the donor antenna feed-in, pass through duplexer successively, descending low noise amplifier, radiofrequency signal is transformed into intermediate-freuqncy signal after the down conversion module, intermediate-freuqncy signal is after the A/D converter sample, analog signal is transformed to digital signal, digital signal becomes baseband signal through behind the different Digital Down Convert passages, the design digital filter carries out filtering to baseband signal, the unwanted part of filtering, again with the baseband signal up-conversion, become analog if signal through the D/A converter, by the up-conversion module intermediate-freuqncy signal is changed into radiofrequency signal again, this radiofrequency signal is through downlink power amplifier, duplexer carries out signal by user antenna to the mobile subscriber at last and covers; Mobile subscriber's signal is after the user antenna feed-in, pass through duplexer successively, up low noise amplifier, radiofrequency signal is transformed into intermediate-freuqncy signal after the down conversion module, intermediate-freuqncy signal is after the A/D converter sample, analog signal is transformed to digital signal, digital signal becomes baseband signal through behind the different Digital Down Convert passages, the design digital filter carries out filtering to baseband signal, the unwanted part of filtering, again with the baseband signal up-conversion, become analog if signal through the D/A converter, by the up-conversion module intermediate-freuqncy signal is changed into radiofrequency signal again, this radiofrequency signal is through the ascending power amplifier, duplexer finally sends to the base station by donor antenna.
Descending Digital IF Processing module of the present utility model or upstream digital intermediate frequency process module can be one or more, described descending Digital IF Processing module or upstream digital intermediate frequency process module are connected with A/D converter, D/A converter simultaneously, the port number of the Digital Down Convert passage by descending Digital IF Processing module or upstream digital intermediate frequency process module are set, can control the number of carrier wave, when the wanted carrier number after a little while, unwanted Digital Down Convert passage is turn-offed, can accomplish that like this working band external noise is very low, not influence the base station.By the digital local oscillator of Digital Down Convert passage is set, can selectively arrive base band to required digital signal conversion, realize movably characteristics of frequency range.By designing the pass band width of different digital filters, realize the requirement of bandwidth varying.
The foregoing description is the utility model preferred implementation; but execution mode of the present utility model is not restricted to the described embodiments; other any do not deviate from change, the modification done under spirit of the present utility model and the principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, be included within the protection range of the present utility model.
Claims (2)
1, a kind of intelligent frequency range frequency selecting repeater system based on digital intermediate frequency, it is characterized in that, comprise donor antenna, user antenna, duplexer, descending low noise amplifier, up low noise amplifier, ascending power amplifier, downlink power amplifier, D/A converter, A/D converter, upstream digital intermediate frequency process module, descending Digital IF Processing module, down conversion module and up-conversion module; Described donor antenna is connected to user antenna by duplexer, descending low noise amplifier, down conversion module, A/D converter, descending Digital IF Processing module, D/A converter, up-conversion module, downlink power amplifier, duplexer successively; Described user antenna is connected to donor antenna by duplexer, up low noise amplifier, down conversion module, A/D converter, upstream digital intermediate frequency process module, D/A converter, up-conversion module, ascending power amplifier, duplexer successively; Described descending Digital IF Processing module is connected to form successively by Digital Down Convert passage, digital filter, Digital Up Convert passage, and wherein the Digital Down Convert passage is connected with the A/D converter, and the Digital Up Convert passage is connected with the D/A converter; Described upstream digital intermediate frequency process module is connected to form successively by Digital Down Convert passage, digital filter, Digital Up Convert passage, and wherein the Digital Down Convert passage is connected with the A/D converter, and the Digital Up Convert passage is connected with the D/A converter.
2, a kind of intelligent frequency range frequency selecting repeater system according to claim 1 based on digital intermediate frequency, it is characterized in that, described descending Digital IF Processing module or upstream digital intermediate frequency process module are a plurality of, and described a plurality of descending Digital IF Processing modules or upstream digital intermediate frequency process module are connected with A/D converter, D/A converter simultaneously.
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| Application Number | Priority Date | Filing Date | Title |
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| CNU2006201553718U CN201004639Y (en) | 2006-12-27 | 2006-12-27 | An intelligent frequency band selection repeater system based on digital intermediate frequency |
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| CNU2006201553718U CN201004639Y (en) | 2006-12-27 | 2006-12-27 | An intelligent frequency band selection repeater system based on digital intermediate frequency |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335730B (en) * | 2008-08-01 | 2011-05-11 | 京信通信系统（中国）有限公司 | Single channel digital frequency selection system with input and output on same frequency and implementing method thereof |
| CN102056301A (en) * | 2009-10-30 | 2011-05-11 | 中国移动通信集团北京有限公司 | Method and equipment for processing downlink signals by repeater and repeater |
| CN102111355A (en) * | 2010-12-15 | 2011-06-29 | 迈普通信技术股份有限公司 | Method and repeater for transmitting and receiving signal in high-speed moving environment |
| CN102469469A (en) * | 2010-11-17 | 2012-05-23 | 深圳国人通信有限公司 | Vehicle-mounted double-channel correcting repeater |
| CN102545976A (en) * | 2010-12-29 | 2012-07-04 | 深圳国人通信有限公司 | MODEM-based double-channel vehicle-mounted deviation rectification repeater for GSM (Global System for Mobile Communications) |
| CN102571165A (en) * | 2010-12-14 | 2012-07-11 | 迈普通信技术股份有限公司 | Method and movable repeater for realizing signal reception in high speed moving environment |
| CN101547037B (en) * | 2008-03-25 | 2012-12-19 | 京信通信系统（中国）有限公司 | GSM digital wireless repeater and method for shutting off time slot of uplink carrier wave |
| CN101286783B (en) * | 2008-05-21 | 2013-01-23 | 京信通信系统（中国）有限公司 | Digital RF remote system with movable working passband and method to move the working passband |
| CN101938821B (en) * | 2009-09-29 | 2013-06-05 | 厦门大学 | Method for inhibiting uplink back noise of digital optical fiber repeater |
| CN105471490A (en) * | 2014-09-05 | 2016-04-06 | 中国移动通信集团公司 | Repeater and signal processing method thereof |
-
2006
- 2006-12-27 CN CNU2006201553718U patent/CN201004639Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101547037B (en) * | 2008-03-25 | 2012-12-19 | 京信通信系统（中国）有限公司 | GSM digital wireless repeater and method for shutting off time slot of uplink carrier wave |
| CN101286783B (en) * | 2008-05-21 | 2013-01-23 | 京信通信系统（中国）有限公司 | Digital RF remote system with movable working passband and method to move the working passband |
| CN101335730B (en) * | 2008-08-01 | 2011-05-11 | 京信通信系统（中国）有限公司 | Single channel digital frequency selection system with input and output on same frequency and implementing method thereof |
| CN101938821B (en) * | 2009-09-29 | 2013-06-05 | 厦门大学 | Method for inhibiting uplink back noise of digital optical fiber repeater |
| CN102056301B (en) * | 2009-10-30 | 2013-07-17 | 中国移动通信集团北京有限公司 | Method and equipment for processing downlink signals by repeater and repeater |
| CN102056301A (en) * | 2009-10-30 | 2011-05-11 | 中国移动通信集团北京有限公司 | Method and equipment for processing downlink signals by repeater and repeater |
| CN102469469A (en) * | 2010-11-17 | 2012-05-23 | 深圳国人通信有限公司 | Vehicle-mounted double-channel correcting repeater |
| CN102571165A (en) * | 2010-12-14 | 2012-07-11 | 迈普通信技术股份有限公司 | Method and movable repeater for realizing signal reception in high speed moving environment |
| CN102571165B (en) * | 2010-12-14 | 2014-09-17 | 迈普通信技术股份有限公司 | Method and movable repeater for realizing signal reception in high speed moving environment |
| CN102111355A (en) * | 2010-12-15 | 2011-06-29 | 迈普通信技术股份有限公司 | Method and repeater for transmitting and receiving signal in high-speed moving environment |
| CN102111355B (en) * | 2010-12-15 | 2014-05-14 | 迈普通信技术股份有限公司 | Method and repeater for transmitting and receiving signal in high-speed moving environment |
| CN102545976A (en) * | 2010-12-29 | 2012-07-04 | 深圳国人通信有限公司 | MODEM-based double-channel vehicle-mounted deviation rectification repeater for GSM (Global System for Mobile Communications) |
| CN105471490A (en) * | 2014-09-05 | 2016-04-06 | 中国移动通信集团公司 | Repeater and signal processing method thereof |
| CN105471490B (en) * | 2014-09-05 | 2020-05-12 | 中国移动通信集团有限公司 | Repeater and signal processing method thereof |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080109 Termination date: 20151227 |
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| EXPY | Termination of patent right or utility model |