CN106301629A - Broadband multi-band signal detecting method and device and wireless communication system - Google Patents
Broadband multi-band signal detecting method and device and wireless communication system Download PDFInfo
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- CN106301629A CN106301629A CN201510326061.1A CN201510326061A CN106301629A CN 106301629 A CN106301629 A CN 106301629A CN 201510326061 A CN201510326061 A CN 201510326061A CN 106301629 A CN106301629 A CN 106301629A
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a kind of broadband multi-band signal supervisory instrument, including the signal sampling module being sequentially electrically connected with, signal shunt module and signal detection module, described signal sampling module, obtain the sampled signal of multiband for the signal of signal sending end is acquired and samples and be delivered to signal shunt module, described signal shunt module, obtain sub-band signals for multiband sampled signal is carried out branch and be delivered to signal detection module, described signal detection module, for detecting respectively sub-band signals.The invention also discloses a kind of broadband multi-band signal detecting method and wireless communication system.Signal processing of the present invention is simple, it is possible to increase the accuracy of detection of multi-band signal, in order to increases the motility that one-segment signal adjusts, the good stability of signal output, is conducive to improving the reliability of communication.
Description
Technical field
The present invention relates to Broadband Detection field, particularly relate to broadband multi-band signal detecting method and dress
Put and wireless communication system.
Background technology
In the face of increasingly competitive communications market, broadband multi-frequency output can a system be supported many because of it
Frequency band works simultaneously, builds a station number of devices in minimizing, reduces and take up room, and reducing the aspects such as cost has very
Big advantage, had become the new direction of communications industry research already.Traditional broadband multi-frequency output is still continued to use
One-segment power detecting method, only has, launching output, the coupling channel detection broadband that a bonder is constituted
Multifrequency export, as it is shown in figure 1, traditional broadband multi-frequency signal detection system include sender transmitting station 1`,
Bonder 2` and signal deteching circuit 3`, the signal before and after detection as shown in Figures 2 and 3, wherein,
BW1~BWn represents the bandwidth that multi-band signal, fn~fn` represent BWn.Conventional wide band multi-band signal
Detecting system is proper for single band detection application, and broadband multi-band application requires to launch system
In wider bandwidth, there is different frequency range, the signal of different systems power, in system simultaneously between each frequency band again
There is numerous intermodulation component, output bandwidth is wider, spectrum complex, uses single power detection, feedback link
Road signal demand uses high sampling rate ADC, and intractability is relatively big, and power detection precision is relatively low, output
Power stability is difficult to ensure that.
Summary of the invention
Present invention is primarily targeted at and solve when broadband multi-frequency segment signal exports simultaneously, multi-band signal
The technical problem that accuracy of detection is low.
For achieving the above object, the present invention provides a kind of broadband multi-band signal supervisory instrument, including signal
Sampling module and signal detection module, described broadband multi-band signal supervisory instrument also includes signal branch mould
Block, described signal sampling module, signal shunt module and signal detection module are sequentially electrically connected with;
Described signal sampling module, obtains multifrequency for the signal of signal sending end is acquired and is sampled
The sampled signal of section is also delivered to signal shunt module, and described signal shunt module, for taking multiband
Sample signal carries out branch and obtains sub-band signals and be delivered to signal detection module, described signal detection module,
For sub-band signals is detected respectively.
Preferably, described broadband multi-band signal supervisory instrument also includes the filter being connected with signal shunt module
Mode block, described filtration module includes the filter unit of respective frequency sub-bands output branch road quantity, described filtering
Unit obtains the filtering signal of one-segment for being filtered processing to every way frequency band signals and is delivered to letter
Number detection module.
Preferably, described filtration module is the combination of band filter or band filter.
Preferably, described signal shunt module is activated distributor or passive power splitter.
Preferably, described signal sampling module is radio frequency directional coupler.
Preferably, described sub-band signals be a continuously/discontinuous narrow band signal, multiple continuously/do not connect
Continuous narrow band signal or some independent frequency signals.
For achieving the above object, the present invention also provides for a kind of broadband multi-band signal detecting method, including step
Rapid:
Gather and the signal of sampled signal transmitting terminal obtains multiband sampled signal;
Multiband sampled signal is carried out branch and obtains sub-band signals;
Sub-band signals is detected.
Preferably, described multiband sampled signal is carried out the step that branch obtains sub-band signals after,
And further comprise the steps of: one-segment signal is entered before being positioned at the described step that sub-band signals is detected
Row independent detection.
For achieving the above object, present invention also offers a kind of wireless communication system, launch eventually including signal
End and signal supervisory instrument, described signal launch terminal and signal supervisory instrument wireless connections, described signal
Detection device is broadband multi-band signal supervisory instrument, and described broadband multi-band signal supervisory instrument includes letter
Number sampling module and signal detection module, described broadband multi-band signal supervisory instrument also includes signal branch
Module, described signal sampling module, signal shunt module and signal detection module are sequentially electrically connected with;
Described signal sampling module, obtains multifrequency for the signal of signal sending end is acquired and is sampled
The sampled signal of section is also delivered to signal shunt module, and described signal shunt module, for taking multiband
Sample signal carries out branch and obtains sub-band signals and be delivered to signal detection module, described signal detection module,
For sub-band signals is detected respectively.
Preferably, described wireless communication system also includes sig-nal-conditioning unit and reception signal terminal, described
The input of sig-nal-conditioning unit is electrically connected with Broadband Detection device, described sig-nal-conditioning unit
Outfan and reception signal terminal wireless connections.
The broadband multi-band signal supervisory instrument that the present invention provides, mainly uses at signal sampling module and letter
Setting up signal shunt module between number detection module, this signal shunt module samples through signal sampling module
The multiband sampled signal obtained carries out branch and obtains sub-band signals, and can by signal detection module
Sub-band signals is detected respectively, it is possible to increase the accuracy of detection of multiband power, further,
Sub-band signals after branch is filtered processing the filtering signal obtaining one-segment by filtration module,
It is capable of when broadband multi-band exports simultaneously detecting one-segment signal, adds the filtering letter of one-segment
Number motility adjusted, signal processing is simply effective, thus ensures the stability that signal export, improves and leads to
The reliability of letter.
Accompanying drawing explanation
Fig. 1 is the block diagram of Conventional wide band multi-band signal detecting system;
Fig. 2 is the multi-band signal schematic diagram in Fig. 1 in the front transmitting chain of bonder sampling;
Fig. 3 is the multi-band signal schematic diagram detected after sampling in Fig. 1;
Fig. 4 is the block diagram of broadband multi-band signal supervisory instrument first embodiment of the present invention;
Fig. 5 is the block diagram of broadband multi-band signal supervisory instrument the second embodiment of the present invention;
Fig. 6 is the multi-band signal schematic diagram after the filtering detection in Fig. 5;
Fig. 7 is the schematic flow sheet of broadband multi-band signal detecting method first embodiment of the present invention;
Fig. 8 is the schematic flow sheet of broadband multi-band signal detecting method the second embodiment of the present invention;
Fig. 9 is the block diagram of wireless communication system first embodiment of the present invention;
Figure 10 is the block diagram of wireless communication system the second embodiment of the present invention.
The realization of the object of the invention, functional characteristics and advantage will in conjunction with the embodiments, do referring to the drawings further
Explanation.
Detailed description of the invention
Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not used to limit
Determine the present invention.
The invention provides a kind of broadband multi-band signal supervisory instrument, refering to Fig. 4, this broadband multi-band is believed
Number detection device includes signal sampling module 21 and signal detection module 24, and described broadband multi-frequency segment signal is examined
Survey device and also include signal shunt module 22, described signal sampling module 21, signal shunt module 22 and
Signal detection module 24 is sequentially electrically connected with.
Described signal sampling module 21, for the signal of signal sending end is acquired and samples obtain many
The sampled signal of frequency range is also delivered to signal shunt module 22;Described signal shunt module 22, for many
Frequency range sampled signal carries out branch and obtains sub-band signals and be delivered to signal detection module 24;Described signal
Detection module 24, for detecting respectively sub-band signals.The implementation of above-mentioned signal detection
Can be power detection, it is also possible to for electric current or the voltage data of power conversion.
Broadband multi-band signal supervisory instrument of the present invention uses signal sampling module 21 many to signal sending end
Frequency band signals is sampled, and through signal shunt module 22, sampled signal is divided into multichannel sub-band signals, and
And by signal detection module 24, sub-band signals is detected respectively, it is possible to increase multi-band signal is examined
The precision surveyed, increases the motility that signal adjusts.
Refering to Fig. 5, in a specific embodiment, described broadband multi-band signal supervisory instrument also include with
The filtration module 23 that signal shunt module 22 connects, described filtration module 23 includes that respective frequency sub-bands exports
The filter unit (not shown) of branch road quantity, described filter unit is for filtering each way frequency band signals
Ripple processes and obtains the filtering signal of one-segment and be delivered to signal detection module 24.This filter unit is preset with
Specific bandwidth, it is possible to sub-band signals is filtrated to get one-segment signal, to realize the signal to one-segment
Detection, it is possible to improve the accuracy of detection of multi-band signal further, and increase one-segment filtering signal tune
Whole motility, signal processing is the most effective, it is possible to ensure the stability of signal output.
In a specific embodiment, described signal shunt module 22 can be activated distributor or passive merit is divided
Device.Preferably scheme is for selecting activated distributor, and gain is good, and isolation is high;Passive merit can also be selected
Divide device, working stability, simple in construction.Concrete, described filtration module 23 is band filter or band
The combination of bandpass filter.This band filter or assemblage zone bandpass filter, be used for filtering except special frequency channel
Outer all frequency ranges or frequency, make every way frequency band signals obtain the filtering of one-segment after processing after filtering
Signal.Concrete, described signal sampling module 21 is radio frequency directional coupler.Radio frequency directional coupler is
The embodiment of optimum bonder, other bonder that can realize sampled functions is also alternative.
In a specific embodiment, described sub-band signals be a continuously/discontinuous narrow band signal,
Multiple continuously/discontinuous narrow band signal or some independent frequency signals.Sub-band signals is single
When connection/discontinuous narrow band signal or frequency signal, the filter action of filtration module 23 is the most inconspicuous,
When sub-band signals comprise multiple continuously/discontinuous narrow band signal or during multiple frequency signal, filter mould
Block 23 is by all frequency ranges filtered in addition to special frequency channel or Frequency point.
Refering to Fig. 6, sub-band signals obtains one-segment signal by the Filtering Processing of filtration module 23, should
Filtration module 23 includes n filter unit, and n road shunting sign is filtered by this n filter unit respectively
Ripple process obtain the filtering signal of n one-segment and be respectively the bandwidth range of BW1~BWn, BW1 be
The bandwidth range of f1~f1`, BWn is fn~fn`, leaches one-segment signal, it is simple to signal detection and signal are adjusted
Whole.
Present invention also offers a kind of broadband multi-band signal detecting method, refering to Fig. 7, this broadband multi-band
Signal detecting method includes step:
The signal of S10, collection sampled signal transmitting terminal obtains multiband sampled signal, specifically, utilizes
Signal sampling module 21 is acquired to the signal of signal sending end and samples the sampled signal obtaining multiband
And it is delivered to signal shunt module 22.
S20, multiband sampled signal is carried out branch obtain sub-band signals, specifically, utilize signal to divide
Road module 22 carries out branch to multiband sampled signal and obtains sub-band signals and be delivered to signal detection module
24。
S30, sub-band signals is detected, specifically, utilize described signal detection module 24 antithetical phrase
Frequency band signals carries out detecting with multi-band signal accuracy of detection respectively.
Broadband multi-band signal detecting method of the present invention, uses first to enter the multi-band signal of signal sending end
Row sampling, is then divided into multichannel sub-band signals by sampled signal, right finally by signal detection module 24
Sub-band signals detects respectively, it is possible to increase the precision of multiband detection, increases the spirit that signal adjusts
Activity.
Refering to Fig. 8, in a specific embodiment, after described step S20 and before being positioned at step S30
Also include step S21: sub-band signals is filtered process and obtains one-segment signal;Described step S30
Particularly as follows: one-segment signal is carried out independent detection.One-segment signal is obtained through this filter step, can
To realize the signal detection to one-segment, it is possible to improve the accuracy of detection of multi-band signal further, and
Increase the motility that one-segment signal adjusts.
Present invention also offers a kind of wireless communication system, refering to Fig. 9, this wireless communication system includes signal
Launch terminal 1 and signal supervisory instrument, described signal launch terminal 1 and signal supervisory instrument wireless connections,
Described signal supervisory instrument is broadband multi-band signal supervisory instrument 2, and described broadband multi-band signal detection fills
Put the 2 signal sampling modules 21 including sequentially being electrically connected with, signal shunt module 22 and signal detection module
24;Described signal sampling module 21, for the signal of signal sending end is acquired and samples obtain many
The sampled signal of frequency range is also delivered to signal shunt module 22, described signal shunt module 22, for many
Frequency range sampled signal carries out branch and obtains sub-band signals and be delivered to signal detection module 24, described signal
Detection module 24, detected for other divide sub-band signals.
Wireless communication system of the present invention, by using above-mentioned broadband multi-band signal supervisory instrument 2, this
Bright wireless communication system uses the signal bandwidth detected by broadband multi-band signal supervisory instrument than existing skill
The broadband simultaneously detecting signal in art is narrow, it is only necessary to the ADC of low sampling rate, and signal processing is simpler,
Accuracy of detection is higher, and power adjusts more flexible, is conducive to improving the reliability of whole communication system.
In a specific embodiment, described broadband multi-band signal supervisory instrument 2 also includes filtration module
23, described filtration module 23 includes the filter unit that respective frequency sub-bands output branch road quantity is arranged, described filter
Ripple unit obtains the filtering signal of one-segment defeated for each way frequency band signals carries out bandpass filtering treatment
Deliver to signal detection module 24.This filtration module 23 is preset with specific bandwidth by the sub-band signals of one-segment
It is filtrated to get one-segment signal, to realize the independent detection to one-segment signal, it is possible to improve many further
The accuracy of detection of frequency band signals, and the motility that the filtering signal increasing one-segment adjusts, signal processing
Simple effective, thus ensure the stability that signal exports.
Refering to Figure 10, in a specific embodiment, described wireless communication system also includes that signal adjusts dress
Put 3 and reception signal terminal 4, the input of described sig-nal-conditioning unit 3 and broadband multi-band signal detection
Device 2 is electrically connected with, the outfan of described sig-nal-conditioning unit 3 and reception signal terminal 4 wireless connections.
Signal accuracy can be conveniently adjusted, it is ensured that the reliability of communication by sig-nal-conditioning unit 3.Signal adjusts
Device 3 has only to the single frequency band signals of individual processing, and signal processing is simple, and adds what signal adjusted
Motility.
These are only the preferred embodiments of the present invention, not thereby limit the scope of the claims of the present invention, every
Utilize equivalent structure or equivalence flow process conversion that description of the invention and accompanying drawing content made, or directly or
Connect and be used in other relevant technical fields, be the most in like manner included in the scope of patent protection of the present invention.
Claims (10)
1. a broadband multi-band signal supervisory instrument, including signal sampling module and signal detection module,
It is characterized in that, described broadband multi-band signal supervisory instrument also includes signal shunt module, described signal
Sampling module, signal shunt module and signal detection module are sequentially electrically connected with;
Described signal sampling module, obtains multifrequency for the signal of signal sending end is acquired and is sampled
The sampled signal of section is also delivered to signal shunt module, and described signal shunt module, for taking multiband
Sample signal carries out branch and obtains sub-band signals and be delivered to signal detection module, described signal detection module,
For sub-band signals is detected respectively.
2. broadband multi-band signal supervisory instrument as claimed in claim 1, it is characterised in that described width
The filtration module being connected with signal shunt module, described filtering mould is also included with multi-band signal detection device
Block includes the filter unit of respective frequency sub-bands output branch road quantity, and described filter unit is for every way frequency
Segment signal is filtered processing and obtains the filtering signal of one-segment and be delivered to signal detection module.
3. broadband multi-band signal supervisory instrument as claimed in claim 2, it is characterised in that described filter
Mode block is the combination of band filter or band filter.
4. broadband multi-band signal supervisory instrument as claimed in claim 2, it is characterised in that described letter
Number shunt module is activated distributor or passive power splitter.
5. broadband multi-band signal supervisory instrument as claimed in claim 2, it is characterised in that described letter
Number sampling module is radio frequency directional coupler.
6. the broadband multi-band signal supervisory instrument as described in any one of claim 1-5, it is characterised in that
Described sub-band signals be a continuously/discontinuous narrow band signal, multiple continuously/discontinuous narrow band signal
Or some independent frequency signals.
7. a broadband multi-band signal detecting method, it is characterised in that include step:
Gather and the signal of sampled signal transmitting terminal obtains multiband sampled signal;
Multiband sampled signal is carried out branch and obtains sub-band signals;
Sub-band signals is detected.
8. broadband multi-band signal detecting method as claimed in claim 7, it is characterised in that described right
After multiband sampled signal carries out the step that branch obtains sub-band signals, and it is positioned at described to frequency sub-band
Signal also includes before carrying out the step detected: sub-band signals is filtered process and obtains one-segment letter
Number step;The described step detecting sub-band signals is particularly as follows: carry out solely one-segment signal
Vertical detection.
9. a wireless communication system, including signal launch terminal and signal supervisory instrument, described signal is sent out
Penetrate terminal and signal supervisory instrument wireless connections, it is characterised in that described signal supervisory instrument is that right is wanted
Seek the broadband multi-band signal supervisory instrument described in any one of 1-6.
10. wireless communication system as claimed in claim 9, it is characterised in that described radio communication system
System also includes sig-nal-conditioning unit and reception signal terminal, the input of described sig-nal-conditioning unit and broadband
Signal supervisory instrument is electrically connected with, the outfan of described sig-nal-conditioning unit and the wireless company of reception signal terminal
Connect.
Priority Applications (2)
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CN201510326061.1A CN106301629A (en) | 2015-06-12 | 2015-06-12 | Broadband multi-band signal detecting method and device and wireless communication system |
PCT/CN2016/070070 WO2016197601A1 (en) | 2015-06-12 | 2016-01-04 | Method and device for detecting wideband multi-frequency band signal and wireless communication system |
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CN201510326061.1A CN106301629A (en) | 2015-06-12 | 2015-06-12 | Broadband multi-band signal detecting method and device and wireless communication system |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117220790A (en) * | 2023-11-09 | 2023-12-12 | 汉仪科技(深圳)有限公司 | Multi-band signal filtering method for 5G communication network |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1545257A (en) * | 2003-11-18 | 2004-11-10 | 欣 耿 | System and method for frequency range segregation and signal synthesis in broadband signal measurement |
CN1949688A (en) * | 2006-10-23 | 2007-04-18 | 华为技术有限公司 | Marker detector and detecting method |
CN102158295A (en) * | 2011-04-02 | 2011-08-17 | 京信通信技术(广州)有限公司 | Signal power detection device for multi-band signal transmitting device and method thereof |
WO2012074887A1 (en) * | 2010-12-03 | 2012-06-07 | Qualcomm Atheros, Inc. | Optimizing data rate of multiband multicarrier communications |
CN102664695A (en) * | 2012-05-08 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test equipment |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN100547941C (en) * | 2003-12-11 | 2009-10-07 | 日立金属株式会社 | Multiband high-frequency circuit, multiband high frequency circuit components and multi-band communication apparatus |
JP5919772B2 (en) * | 2011-12-01 | 2016-05-18 | 日本電気株式会社 | DTMF signal detection apparatus, method and program |
CN103368665A (en) * | 2012-03-30 | 2013-10-23 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test method, equipment and system |
CN102664694A (en) * | 2012-04-25 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-band and multi-signal mixed inter-modulation interference analyzer and analyzing method thereof |
-
2015
- 2015-06-12 CN CN201510326061.1A patent/CN106301629A/en not_active Withdrawn
-
2016
- 2016-01-04 WO PCT/CN2016/070070 patent/WO2016197601A1/en active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1545257A (en) * | 2003-11-18 | 2004-11-10 | 欣 耿 | System and method for frequency range segregation and signal synthesis in broadband signal measurement |
CN1949688A (en) * | 2006-10-23 | 2007-04-18 | 华为技术有限公司 | Marker detector and detecting method |
WO2012074887A1 (en) * | 2010-12-03 | 2012-06-07 | Qualcomm Atheros, Inc. | Optimizing data rate of multiband multicarrier communications |
CN102158295A (en) * | 2011-04-02 | 2011-08-17 | 京信通信技术(广州)有限公司 | Signal power detection device for multi-band signal transmitting device and method thereof |
CN102664695A (en) * | 2012-05-08 | 2012-09-12 | 中国联合网络通信有限公司广东省分公司 | Multi-signal passive intermodulation test equipment |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN117220790A (en) * | 2023-11-09 | 2023-12-12 | 汉仪科技(深圳)有限公司 | Multi-band signal filtering method for 5G communication network |
CN117220790B (en) * | 2023-11-09 | 2024-01-05 | 汉仪科技(深圳)有限公司 | Multi-band signal filtering method for 5G communication network |
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