CN202679406U - Bidirectional multi-signal processing coverage system for high-speed mobile body - Google Patents
Bidirectional multi-signal processing coverage system for high-speed mobile body Download PDFInfo
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- CN202679406U CN202679406U CN 201220307784 CN201220307784U CN202679406U CN 202679406 U CN202679406 U CN 202679406U CN 201220307784 CN201220307784 CN 201220307784 CN 201220307784 U CN201220307784 U CN 201220307784U CN 202679406 U CN202679406 U CN 202679406U
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Abstract
The utility model relates to a bidirectional multi-signal processing coverage system for a high-speed mobile body, which comprises a power supply, two duplex combiners, a donor antenna, a retransmission antenna, an uplink low-noise amplifier, an uplink power amplifier, a downlink low-noise amplifier, a downlink power amplifier, a signal calculating and processing module, an uplink frequency offset processing module and a downlink frequency offset processing module. The donor antenna is respectively connected with the input end of the uplink low-noise amplifier and the output end of the downlink power amplifier through the first duplex combiner. The output end of the uplink low-noise amplifier is connected with the input end of the uplink frequency offset processing module. The output end of the uplink frequency offset processing module is connected with the input end of the uplink power amplifier. The output end of the uplink power amplifier and the input end of the downlink low-noise amplifier are respectively connected with the retransmission antenna through a second duplex combiner.
Description
Technical field
The utility model relates to a kind of moving communicating field, and is particularly a kind of for the two-way many signals processing covering systems of the high-speed mobile unit that solves a plurality of communication terminal communication issues in the high-speed mobile unit.
Background technology
Along with development in science and technology, high-speed mobile unit is more and more, such as the automobile of fast running, train etc., when the speed of high-speed mobile unit during greater than 160km/h, Doppler effect is fairly obvious, and handover produces and goes offline in the communication process, in order to solve this problem of Doppler effect, people adopt at high-speed mobile unit increases the doppler correction device, and the signal that is about to receive carries out doppler correction, although can improve to a certain extent speech quality.But can't satisfy simultaneously the doppler correction device demand of a plurality of communication terminals.
Because the high-speed mobile unit majority is metal structure, signal is decayed fairly obvious in envelope, even differ one or two meter in the same envelope, the signal that two portable terminals are accepted might be from different zones, according to the principle of Doppler effect, this moment might be just opposite when two portable terminals carry out the frequency difference compensation.
As everyone knows, the communication zone that each communication terminal covers is different, therefore moving body is when high-speed mobile, although two communication terminals of one or two meter of being separated by are simultaneously in communication, but the pretreated result of frequency difference might be opposite, one of them terminal normal field strong center approaches, and frequency difference preliminary treatment this moment should subtract frequently according to speed to be processed; And another terminal with respect to its residing communication zone normal field strong center away from direction move, frequency difference preliminary treatment this moment is to increase frequently according to speed to process.China Patent No.: 201010004143.1 disclose a kind of field intensity covering method for high-speed moving object, comprise the steps: fixed end signal transmission, the broadband IP digital signal modulated is become radiofrequency signal, the frequency of described radiofrequency signal is 100MHz～7GHz, then this radiofrequency signal is launched by antenna; The mobile terminal signal receives and carries out being demodulated to the broadband IP digital signal after the Doppler frequency difference is proofreaied and correct, each output by switch outputs to respectively each little base station, and each little base station is exported the movable signal of various standards and realize that by cable or antenna signal covers in moving body after mixer is closed the road.But just different terminals being carried out different pre-frequency differences in this scheme processes this problem and fails to propose concrete solution, namely can't realize the frequency difference correction of a plurality of communication terminals in the high-speed mobile unit, can't eliminate or reduce the harmful effect that Doppler frequency shift brings.
Summary of the invention
Therefore, for above-mentioned problem, the utility model proposes a kind of can the realization frequency difference of a plurality of communication terminals in the high-speed mobile unit is proofreaied and correct, so that the two-way many signals of the high-speed mobile unit that a plurality of communication terminal can work are simultaneously processed covering system.
For solving this technical problem, the utility model is taked following scheme: the two-way many signals of a kind of high-speed mobile unit are processed covering system, comprise power supply, two duplexing mixers, donor antenna, retransmitting antenna, up low noise amplifier, the ascending power amplifier, descending low noise amplifier and downlink power amplifier, also comprise the calculated signals processing module, uplink frequency offset processing module and downlink frequency offset processing module, described donor antenna is connected with the downlink power amplifier output with up low noise amplifier input respectively through the first duplexing mixer, described up low noise amplifier output is connected with uplink frequency offset processing module input, described uplink frequency offset processing module output connects the ascending power amplifier in, described downlink power amplifier input is connected with downlink frequency offset processing module output, described downlink frequency offset processing module input is connected with descending low noise amplifier output, described ascending power amplifier out is connected with retransmitting antenna through the second duplexing mixer respectively with descending low noise amplifier input, and described calculated signals processing module is connected with the downlink frequency offset processing module with the uplink frequency offset processing module respectively.
Further, described uplink frequency offset processing module and downlink frequency offset processing module are by two or more frequency offset processing unit formation that is connected in parallel.
Further, described frequency offset processing unit is made of frequency selection circuit, frequency sampling circuit, control telecommunication circuit, frequency adjustment VCO circuit and frequency shift circuit, described frequency selection circuit output is rate of connections sample circuit input and frequency shift circuit input respectively, described frequency sampling circuit output end connects control telecommunication circuit input, described control telecommunication circuit output rate of connections is adjusted the VCO circuit input end, described control telecommunication circuit also is connected with the calculated signals processing module, and described frequency is adjusted the VCO circuit output end and connected the frequency shift circuit input.
Further, the descending movable signal of the up movable signal of described donor antenna reception and retransmitting antenna reception is any one movable signal in GSM, CDMA, WCDMA, TD-SCDMA, GSMR, TATRE, CMMB and the WI-FI communication standard.
By adopting the aforementioned techniques scheme, the beneficial effects of the utility model are: by a plurality of signals in the high-speed mobile unit are processed through frequency offset processing module and the calculated signals processing module of uplink downlink, realization is proofreaied and correct the frequency difference of a plurality of communication terminals in the high-speed mobile unit, so that a plurality of communication terminal can work simultaneously; Fundamentally eliminated Doppler effect and the switching disconnection of high-speed mobile unit in communication process, guaranteed good speech quality, by single many nets of net transmission solution covering problem, the networking cost of saving more than 80% reduces by 90% environment pollution with electromagnet simultaneously simultaneously.
Description of drawings
Fig. 1 is the system architecture diagram of the utility model embodiment;
Fig. 2 is the structured flowchart of the utility model embodiment frequency deviation processing unit.
Embodiment
Now with embodiment the utility model is further specified by reference to the accompanying drawings.
The below illustrates how to realize that existing movable signal such as the field intensity of GSM on bullet train cover take the field intensity covering method in a kind of bullet train (speed per hour is as 300km/h) envelope; Because identical on 2 frequency offset processing unit and a plurality of frequency offset processing unit principle, the present embodiment just respectively 2 frequency offset processing unit further specifies the utility model as example take uplink downlink.
With reference to figure 1 and Fig. 2, the two-way many signals of a kind of high-speed mobile unit of the present utility model are processed covering system, comprise power supply, donor antenna 1, the first duplexing mixer 2, the second duplexing mixer 3, retransmitting antenna 4, up low noise amplifier 5, ascending power amplifier 6, descending low noise amplifier 7, downlink power amplifier 8, calculated signals processing module 9, uplink frequency offset processing module 10 and downlink frequency offset processing module 11, described donor antenna 1 is connected with downlink power amplifier 8 outputs with up low noise amplifier 5 inputs respectively through the first duplexing mixer 2, described up low noise amplifier 5 outputs are connected with uplink frequency offset processing module 10 inputs, described uplink frequency offset processing module 10 outputs connect ascending power amplifier 6 inputs, described downlink power amplifier 7 inputs are connected with downlink frequency offset processing module 11 outputs, described downlink frequency offset processing module 11 inputs are connected with descending low noise amplifier 7 outputs, described ascending power amplifier 6 outputs are connected with retransmitting antenna 4 through the second duplexing mixer 3 respectively with descending low noise amplifier 7 inputs, described calculated signals processing module 9 is connected with downlink frequency offset processing module 11 with uplink frequency offset processing module 10 respectively, described uplink frequency offset processing module 10 is connected in parallel by the first uplink frequency offset processing unit 101 and the second uplink frequency offset processing unit 102 and consists of, described downlink frequency offset processing module 11 is connected in parallel by the first downlink frequency offset processing unit 111 and the second downlink frequency offset processing unit 112 and consists of, described the first uplink frequency offset processing unit 101, the second uplink frequency offset processing unit 102, the first downlink frequency offset processing unit 111 and the second downlink frequency offset processing unit 112 all adopt frequency offset processing unit 12 to consist of, described frequency offset processing unit 12 is by frequency selection circuit 121, frequency sampling circuit 122, control telecommunication circuit 123, frequency adjusts VCO circuit 124 and frequency shift circuit 125 consists of, described frequency selection circuit 121 outputs are rate of connections sample circuit 122 inputs and frequency shift circuit 125 inputs respectively, described frequency sampling circuit 122 outputs connect control telecommunication circuit 123 inputs, described control telecommunication circuit 123 output rate of connections are adjusted VCO circuit 124 inputs, described control telecommunication circuit 123 also is connected with calculated signals processing module 9, and described frequency is adjusted VCO circuit 124 outputs and connected frequency shift circuit 125 inputs.
Operation principle of the present utility model is: diverse location has two communication terminals in the compartment of bullet train, up GSM movable signal receives by donor antenna, again through up low noise amplification, by the uplink frequency offset processing module movable signal is carried out frequency-selective filtering this communication terminal frequency of sampling again, and frequency information sent by the calculated signals processing module carry out correlation computations, according to the bullet train traffic direction, set the first uplink frequency offset processing unit and the second uplink frequency offset processing unit respectively corresponding communication terminal A and communication terminal B, the frequency offset processing unit arranges the VCO frequency according to calculated signals processing module calculated rate difference value, carry out frequency offset correction and process in frequency shift circuit, correction signal covers through retransmitting antenna transmission after the ascending power amplifier carries out power amplification; And descending GSM movable signal receives by retransmitting antenna, again through descending low noise amplification, by the downlink frequency offset processing module movable signal is carried out frequency-selective filtering this communication terminal frequency of sampling again, and frequency information sent by the calculated signals processing module carry out correlation computations, according to the bullet train traffic direction, set the first downlink frequency offset processing unit and the second downlink frequency offset processing unit respectively corresponding communication terminal A and communication terminal B, the frequency offset processing unit arranges the VCO frequency according to calculated signals processing module calculated rate difference value, carry out frequency offset correction and process in frequency shift circuit, emission covers correction signal through donor antenna after downlink power amplifier is carried out power amplification again; Can realize like this signal of the communication terminal of diverse location in the same moving body is carried out frequency correction.
The descending movable signal that the up movable signal that donor antenna receives in the utility model and retransmitting antenna receive can also be any one movable signal in CDMA, WCDMA, TD-SCDMA, GSMR, TATRE, CMMB and the WI-FI communication standard.
The utility model is by processing through frequency offset processing module and the calculated signals processing module of uplink downlink a plurality of signals in the high-speed mobile unit, realization is proofreaied and correct the frequency difference of a plurality of communication terminals in the high-speed mobile unit, so that a plurality of communication terminal can work simultaneously; Fundamentally eliminated Doppler effect and the switching disconnection of high-speed mobile unit in communication process, guaranteed good speech quality, by single many nets of net transmission solution covering problem, the networking cost of saving more than 80% reduces by 90% environment pollution with electromagnet simultaneously simultaneously.
Although specifically show and introduced the utility model in conjunction with preferred embodiment; but the those skilled in the art should be understood that; within not breaking away from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection range of the present utility model.
Claims (4)
1. the two-way many signals of high-speed mobile unit are processed covering system, comprise power supply, two duplexing mixers, donor antenna, retransmitting antenna, up low noise amplifier, the ascending power amplifier, descending low noise amplifier and downlink power amplifier, it is characterized in that: also comprise the calculated signals processing module, uplink frequency offset processing module and downlink frequency offset processing module, described donor antenna is connected with the downlink power amplifier output with up low noise amplifier input respectively through the first duplexing mixer, described up low noise amplifier output is connected with uplink frequency offset processing module input, described uplink frequency offset processing module output connects the ascending power amplifier in, described downlink power amplifier input is connected with downlink frequency offset processing module output, described downlink frequency offset processing module input is connected with descending low noise amplifier output, described ascending power amplifier out is connected with retransmitting antenna through the second duplexing mixer respectively with descending low noise amplifier input, and described calculated signals processing module is connected with the downlink frequency offset processing module with the uplink frequency offset processing module respectively.
2. the two-way many signals of high-speed mobile unit according to claim 1 are processed covering systems, it is characterized in that: described uplink frequency offset processing module and downlink frequency offset processing module are by two or more frequency offset processing unit formation that is connected in parallel.
3. the two-way many signals of high-speed mobile unit according to claim 2 are processed covering system, it is characterized in that: described frequency offset processing unit is by frequency selection circuit, the frequency sampling circuit, the control telecommunication circuit, frequency adjusts the VCO circuit and frequency shift circuit consists of, described frequency selection circuit output is rate of connections sample circuit input and frequency shift circuit input respectively, described frequency sampling circuit output end connects control telecommunication circuit input, described control telecommunication circuit output rate of connections is adjusted the VCO circuit input end, described control telecommunication circuit also is connected with the calculated signals processing module, and described frequency is adjusted the VCO circuit output end and connected the frequency shift circuit input.
4. the two-way many signals of high-speed mobile unit according to claim 1 are processed covering system, and it is characterized in that: the descending movable signal that the up movable signal that described donor antenna receives and retransmitting antenna receive is any one movable signal in GSM, CDMA, WCDMA, TD-SCDMA, GSMR, TATRE, CMMB and the WI-FI communication standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307784 CN202679406U (en) | 2012-06-26 | 2012-06-26 | Bidirectional multi-signal processing coverage system for high-speed mobile body |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220307784 CN202679406U (en) | 2012-06-26 | 2012-06-26 | Bidirectional multi-signal processing coverage system for high-speed mobile body |
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| CN202679406U true CN202679406U (en) | 2013-01-16 |
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| CN 201220307784 Expired - Fee Related CN202679406U (en) | 2012-06-26 | 2012-06-26 | Bidirectional multi-signal processing coverage system for high-speed mobile body |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286705A (en) * | 2018-09-30 | 2019-01-29 | 维沃移动通信有限公司 | A kind of terminal device |
-
2012
- 2012-06-26 CN CN 201220307784 patent/CN202679406U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109286705A (en) * | 2018-09-30 | 2019-01-29 | 维沃移动通信有限公司 | A kind of terminal device |
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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: 20130116 Termination date: 20180626 |
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| CF01 | Termination of patent right due to non-payment of annual fee |