CN103516645B - A kind of two-way multi signal of high-speed mobile unit processes covering method - Google Patents
A kind of two-way multi signal of high-speed mobile unit processes covering method Download PDFInfo
- Publication number
- CN103516645B CN103516645B CN201210217940.7A CN201210217940A CN103516645B CN 103516645 B CN103516645 B CN 103516645B CN 201210217940 A CN201210217940 A CN 201210217940A CN 103516645 B CN103516645 B CN 103516645B
- Authority
- CN
- China
- Prior art keywords
- offset processing
- frequency offset
- processing module
- input
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Radio Relay Systems (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The present invention relates to moving communicating field, there is provided a kind of to be capable of the frequency difference to communication terminals multiple in high-speed mobile body and correct, the two-way multi signal of high-speed mobile unit making multiple communication terminal energy normal operation simultaneously processes covering method, including power supply, two duplexing combiners, donor antenna, retransmitting antenna, up low-noise amplifier, ascending power amplifier, descending low-noise amplifier and downlink power amplifier, also include signal computing module, uplink frequency offset processing module and downlink frequency offset processing module, described donor antenna is connected with up low-noise amplifier input and downlink power amplifier outfan respectively through the first duplex combiner, described up low-noise amplifier outfan is connected with uplink frequency offset processing module input, the output of described uplink frequency offset processing module connects ascending power amplifier in, described ascending power amplifier out is connected with retransmitting antenna through the second duplex combiner respectively with descending low-noise amplifier input.
Description
Technical field
The present invention relates to a kind of moving communicating field, particularly to a kind of for solving the two-way multi signal process covering method of the high-speed mobile unit of multiple serial communication problems in high-speed mobile body.
Background technology
Along with development in science and technology, high-speed mobile unit gets more and more, such as the automobile of fast running, train etc., when the speed of high-speed mobile unit is more than 160km/h, Doppler effect is fairly obvious, and in communication process, handover produces to go offline, in order to solve this problem of Doppler effect, people adopt increases doppler correction device on high-speed mobile unit, and the signal being about to receive carries out doppler correction, although can improve speech quality to a certain extent.But the doppler correction device demand of multiple communication terminal cannot be met simultaneously.
Owing to high-speed mobile unit majority is metal structure, signal is decayed fairly obvious in envelope, even if difference one or two meter in same envelope, the signal that two mobile terminals accept is possible from different regions, principle according to Doppler effect, now two mobile terminals carry out during frequency difference compensation likely just contrary.
It is known that, 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 result of frequency difference pretreatment is likely to be contrary, one of them terminal normal field strong center is close, and now frequency difference pretreatment should carry out subtracting frequency according to speed and process；And another terminal relative to its residing communication zone normal field strong center away from direction move, now frequency difference pretreatment be according to speed carry out increase frequency 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, 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;Mobile terminal signal is demodulated to broadband IP digital signal after receiving and carrying out Doppler frequency difference correction, being respectively outputted to each micro-base station by each outfan of switch, each micro-base station exports the movable signal of various standards and realizes signal covering in moving body by cable or antenna behind combiner conjunction road.But different terminals is just carried out different pre-frequency differences by the program process this problem and could not propose concrete solution, namely cannot realize the frequency difference correction of multiple communication terminals in high-speed mobile body, it is impossible to eliminate or reduce the harmful effect that Doppler frequency shift brings.
Summary of the invention
Therefore, for above-mentioned problem, the present invention proposes a kind of to be capable of the frequency difference to communication terminals multiple in high-speed mobile body and correct so that multiple communication terminals the two-way multi signal of high-speed mobile unit of normal operation simultaneously can process covering method.
For solving this technical problem, the present invention takes below scheme: a kind of two-way multi signal of high-speed mobile unit processes covering method, including power supply, two duplexing combiners, donor antenna, retransmitting antenna, up low-noise amplifier, ascending power amplifier, descending low-noise amplifier and downlink power amplifier, also include signal computing module, uplink frequency offset processing module and downlink frequency offset processing module, described donor antenna is connected with up low-noise amplifier input and downlink power amplifier outfan respectively through the first duplex combiner, described up low-noise amplifier outfan is connected with uplink frequency offset processing module input, the output of described uplink frequency offset processing module connects ascending power amplifier in, described downlink power amplifier input is connected with downlink frequency offset processing module outfan, described downlink frequency offset processing module input is connected with descending low-noise amplifier outfan, described ascending power amplifier out is connected with retransmitting antenna through the second duplex combiner respectively with descending low-noise amplifier input, described signal computing module is connected with uplink frequency offset processing module and downlink frequency offset processing module respectively.
Further, described uplink frequency offset processing module and downlink frequency offset processing module are connected in parallel composition by two or more frequency offset processing unit.
Further, described frequency offset processing unit is made up of frequency selection circuit, frequency sampling circuit, control telecommunication circuit, frequency adjustment VCO circuit and frequency shift circuit, described frequency selection circuit outfan 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 outfan rate of connections adjusts VCO circuit input end, described control telecommunication circuit is also connected with signal computing module, and described frequency adjusts VCO circuit output end and connects frequency shift circuit input.
Further, described donor antenna receives up movable signal and the descending movable signal of retransmitting antenna reception are any one movable signal in GSM, CDMA, WCDMA, TD-SCDMA, GSMR, TATRE, CMMB and WI-FI communication standard.
By adopting preceding solution, the invention has the beneficial effects as follows: by the frequency offset processing module through uplink downlink of the multiple signals in high-speed mobile body and signal computing module are processed, realize the frequency difference of communication terminals multiple in high-speed mobile body is corrected so that multiple communication terminals energy normal operation simultaneously；Fundamentally eliminating high-speed mobile unit Doppler effect in communication process and switching disconnection, it is ensured that good speech quality, solve many nets covering problem by single net transmission simultaneously, the networking cost saving more than 80% reduces by 90% environment pollution with electromagnet simultaneously.
Accompanying drawing explanation
Fig. 1 is the system architecture diagram of the embodiment of the present invention；
Fig. 2 is the structured flowchart of embodiment of the present invention frequency deviation processing unit.
Detailed description of the invention
In conjunction with the drawings and specific embodiments, the present invention is further described.
Illustrate how to realize existing movable signal such as GSM Field strength coverage on bullet train with the field intensity covering method in a kind of bullet train (speed per hour is for 300km/h) envelope below；Owing to 2 frequency offset processing unit are identical with in multiple frequency offset processing unit principles, just for each 2 the frequency offset processing unit of uplink downlink, the present invention is further described for the present embodiment.
With reference to Fig. 1 and Fig. 2, the two-way multi signal of a kind of high-speed mobile unit of the present invention processes covering method, including power supply, donor antenna 1, first duplex combiner 2, second duplex combiner 3, retransmitting antenna 4, up low-noise amplifier 5, ascending power amplifier 6, descending low-noise amplifier 7, downlink power amplifier 8, signal computing module 9, uplink frequency offset processing module 10 and downlink frequency offset processing module 11, described donor antenna 1 is connected with up low-noise amplifier 5 input and downlink power amplifier 8 outfan respectively through the first duplex combiner 2, described up low-noise amplifier 5 outfan is connected with uplink frequency offset processing module 10 input, the output of described uplink frequency offset processing module 10 connects ascending power amplifier 6 input, described downlink power amplifier 8 input is connected with downlink frequency offset processing module 11 outfan, described downlink frequency offset processing module 11 input is connected with descending low-noise amplifier 7 outfan, described ascending power amplifier 6 outfan is connected with retransmitting antenna 4 through the second duplex combiner 3 respectively with descending low-noise amplifier 7 input, described signal computing module 9 is connected with uplink frequency offset processing module 10 and downlink frequency offset processing module 11 respectively, described uplink frequency offset processing module 10 is connected in parallel is constituted by the first uplink frequency offset processing unit 101 and the second uplink frequency offset processing unit 102, described downlink frequency offset processing module 11 is connected in parallel is constituted by the first downlink frequency offset processing unit 111 and the second downlink frequency offset processing unit 112, described first uplink frequency offset processing unit 101, second uplink frequency offset processing unit 102, first downlink frequency offset processing unit 111 and the second downlink frequency offset processing unit 112 all adopt frequency offset processing unit 12 to constitute, 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 is constituted, described frequency selection circuit 121 outfan is rate of connections sample circuit 122 input and frequency shift circuit 125 input respectively, described frequency sampling circuit 122 outfan connects control telecommunication circuit 123 input, described control telecommunication circuit 123 outfan rate of connections adjusts VCO circuit 124 input, described control telecommunication circuit 123 is also connected with signal computing module 9, described frequency adjusts VCO circuit 124 outfan and connects frequency shift circuit 125 input.
The operation principle of the present invention is: when in the compartment of bullet train, diverse location has two communication terminals, up GSM movable signal is received by donor antenna, then through up low noise amplification, by uplink frequency offset processing module, movable signal carries out frequency-selective filtering again to sample this communication terminal frequency, and frequency information given carried out correlation computations by signal computing module, according to bullet train traffic direction, set the first uplink frequency offset processing unit and the second uplink frequency offset processing unit corresponding communication terminal A and communication terminal B respectively, frequency offset processing unit calculates frequency difference value according to signal computing module and arranges VCO frequency, frequency shift circuit carries out frequency offset correction process, correction signal carries out launching through retransmitting antenna after power amplification covering through ascending power amplifier；And descending GSM movable signal is received by retransmitting antenna, then through descending low noise amplification, by downlink frequency offset processing module, movable signal carries out frequency-selective filtering again to sample this communication terminal frequency, and frequency information given carried out correlation computations by signal computing module, according to bullet train traffic direction, set the first downlink frequency offset processing unit and the second downlink frequency offset processing unit corresponding communication terminal A and communication terminal B respectively, frequency offset processing unit calculates frequency difference value according to signal computing module and arranges VCO frequency, frequency shift circuit carries out frequency offset correction process, correction signal launches covering through donor antenna after carrying out power amplification then through downlink power amplifier；So can realize the signal of the communication terminal of diverse location in same moving body is carried out frequency correction.
Up movable signal and the descending movable signal of retransmitting antenna reception that in the present invention, donor antenna receives can also be any one movable signal in CDMA, WCDMA, TD-SCDMA, GSMR, TATRE, CMMB and WI-FI communication standard.
The present invention is by processing the frequency offset processing module through uplink downlink of the multiple signals in high-speed mobile body and signal computing module, it is achieved the frequency difference of communication terminals multiple in high-speed mobile body is corrected so that multiple communication terminals can normal operation simultaneously；Fundamentally eliminating high-speed mobile unit Doppler effect in communication process and switching disconnection, it is ensured that good speech quality, solve many nets covering problem by single net transmission simultaneously, the networking cost saving more than 80% reduces by 90% environment pollution with electromagnet simultaneously.
Although specifically showing in conjunction with preferred embodiment and describing the present invention; but those skilled in the art should be understood that; in the spirit and scope without departing from appended claims invention defined; the present invention can be made a variety of changes in the form and details, be protection scope of the present invention.
Claims (2)
1. the two-way multi signal of high-speed mobile unit processes covering method, including power supply, two duplexing combiners, donor antenna, retransmitting antenna, up low-noise amplifier, ascending power amplifier, descending low-noise amplifier and downlink power amplifier, it is characterized in that: also include signal computing module, uplink frequency offset processing module and downlink frequency offset processing module, described donor antenna is connected with up low-noise amplifier input and downlink power amplifier outfan respectively through the first duplex combiner, described up low-noise amplifier outfan is connected with uplink frequency offset processing module input, the output of described uplink frequency offset processing module connects ascending power amplifier in, described downlink power amplifier input is connected with downlink frequency offset processing module outfan, described downlink frequency offset processing module input is connected with descending low-noise amplifier outfan, described ascending power amplifier out is connected with retransmitting antenna through the second duplex combiner respectively with descending low-noise amplifier input, described signal computing module is connected with uplink frequency offset processing module and downlink frequency offset processing module respectively；Described uplink frequency offset processing module and downlink frequency offset processing module are connected in parallel composition by two or more frequency offset processing unit；Described frequency offset processing unit is made up of frequency selection circuit, frequency sampling circuit, control telecommunication circuit, frequency adjustment VCO circuit and frequency shift circuit, described frequency selection circuit outfan 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 outfan rate of connections adjusts VCO circuit input end, described control telecommunication circuit is also connected with signal computing module, and described frequency adjusts VCO circuit output end and connects frequency shift circuit input.
2. the two-way multi signal of high-speed mobile unit according to claim 1 processes covering method, it is characterised in that: up movable signal and the descending movable signal of retransmitting antenna reception that described donor antenna receives are any one movable signal in GSM, CDMA, WCDMA, TD-SCDMA, GSMR, TATRE, CMMB and WI-FI communication standard.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210217940.7A CN103516645B (en) | 2012-06-26 | 2012-06-26 | A kind of two-way multi signal of high-speed mobile unit processes covering method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210217940.7A CN103516645B (en) | 2012-06-26 | 2012-06-26 | A kind of two-way multi signal of high-speed mobile unit processes covering method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103516645A CN103516645A (en) | 2014-01-15 |
| CN103516645B true CN103516645B (en) | 2016-06-29 |
Family
ID=49898699
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210217940.7A Active CN103516645B (en) | 2012-06-26 | 2012-06-26 | A kind of two-way multi signal of high-speed mobile unit processes covering method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103516645B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859039A (en) * | 2006-02-08 | 2006-11-08 | 华为技术有限公司 | Mobile communication system and its method for reducing up channel Doppler effect |
| CN101699917A (en) * | 2009-09-18 | 2010-04-28 | 深圳市云海通讯股份有限公司 | Repeater and method for processing downlink radio-frequency signal by same |
-
2012
- 2012-06-26 CN CN201210217940.7A patent/CN103516645B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1859039A (en) * | 2006-02-08 | 2006-11-08 | 华为技术有限公司 | Mobile communication system and its method for reducing up channel Doppler effect |
| CN101699917A (en) * | 2009-09-18 | 2010-04-28 | 深圳市云海通讯股份有限公司 | Repeater and method for processing downlink radio-frequency signal by same |
Non-Patent Citations (1)
| Title |
|---|
| WCDMA无线直放站的射频关键技术研究;纪磊;《中国优秀硕士论文电子期刊网》;20060915;全文 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103516645A (en) | 2014-01-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11258430B2 (en) | Apparatus and method for selecting frequency band | |
| CN101800566B (en) | A kind of radio-frequency front-end system | |
| CN105474549A (en) | Method for eliminating self-interference of transmission and reception sharing antenna, transceiver, and communication device | |
| CN103427874A (en) | System and method for canceling high-transmission-power same-time same-frequency self-interference under multi-path environment | |
| CN102281548A (en) | Frequency domain decomposition-long term evolution (FDD-LTE) indoor coverage system | |
| CN103546189B (en) | Radio-frequency (RF) front-end circuit and system | |
| CN102324958A (en) | Wireless communication method used for MIMO (multiple input multiple output) system under high-speed railway environment | |
| US20180331704A1 (en) | Radio-frequency circuit with multiple antennas nd radio-frequency signal processing method | |
| CN102332929B (en) | Dual-mode radio frequency module, dual-mode radio frequency sending, receiving method and user terminal | |
| CN104283600A (en) | Distributed radio system | |
| Krone et al. | Physical layer design, link budget analysis, and digital baseband implementation for 60 GHz short-range applications | |
| CN203243526U (en) | Indoor coverage accessing device and indoor coverage system | |
| CN103347264B (en) | The high-power covering method of TDD mobile communication system and device | |
| CN203166090U (en) | Base station antenna capable of adjusting polarization direction | |
| CN103516645B (en) | A kind of two-way multi signal of high-speed mobile unit processes covering method | |
| CN202679406U (en) | Bidirectional multi-signal processing coverage system for high-speed mobile body | |
| CN105530039B (en) | Combiner, combining device and signal are combined system | |
| CN100574140C (en) | Adopt the TD-SCDMA amplifier of radio-frequency switch array | |
| CN106411386B (en) | Full-band repeater | |
| CN213152052U (en) | Signal transceiving circuit and electronic device | |
| CN112600595B (en) | Tunnel leaky-cable communication system | |
| CN201188673Y (en) | Digital radio frequency zooming system base on system backup | |
| CN206099977U (en) | Full frequency channel repeater | |
| CN106452547B (en) | differential beam forming method for multi-antenna relay communication system | |
| CN201742513U (en) | Wireless wideband communication equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |