CN106357277A - Method to enhance WCDMA weak signal detection based on energy screening device for SDR platform - Google Patents
Method to enhance WCDMA weak signal detection based on energy screening device for SDR platform Download PDFInfo
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- CN106357277A CN106357277A CN201610752713.2A CN201610752713A CN106357277A CN 106357277 A CN106357277 A CN 106357277A CN 201610752713 A CN201610752713 A CN 201610752713A CN 106357277 A CN106357277 A CN 106357277A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/0003—Software-defined radio [SDR] systems, i.e. systems wherein components typically implemented in hardware, e.g. filters or modulators/demodulators, are implented using software, e.g. by involving an AD or DA conversion stage such that at least part of the signal processing is performed in the digital domain
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/69—Spread spectrum techniques
- H04B1/707—Spread spectrum techniques using direct sequence modulation
- H04B1/7073—Synchronisation aspects
- H04B1/7075—Synchronisation aspects with code phase acquisition
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- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a method to enhance WCDMA weak signal detection based on the energy screening device for the SDR platform, which relates to the detection and signal recognition technology of the weak radio signal in the field of radio communication. The method, through adding the energy screening device to the SDR software-based radio platform, collects and screens the results calculated by the uplink pilot energy signal calculator, thus effectively improving the detection distance from the whole SDR software radio platform to the target WCDMA mobile transmission signal and the detection accuracy. The energy screening device can work out whether the received WCDMA mobile phone signal is the signal transmitted by the target according to the calculation results of the uplink pilot energy signal calculator, thereby improving the accuracy of the target detection. Resolution of the critical distance is greatly enhanced through the statistical analysis of data probability on the results of the uplink pilot energy signal calculator, thus the capture distance is greatly enhanced.
Description
Technical field
The present invention relates to detection and its tracking technique to wcdma small-signal in radio communication field, more particularly, to
One kind selects device to strengthen wcdma infant laser signal detection method based on sdr platform energy brush, has and detects target wcdma signal source
Energy capture scope is wide, the advantage such as detection accuracy height.
Background technology
Significantly spread out with the wcdma network whole world, more and more users move communication with wcdma mobile phone, specially
Net radio communication and its rescue and relief work need the wcdma signal source of targeted customer is accurately detected, thus in disaster
The stranded people of a large amount of redemptions.Because domestic wcdma network is in a large number using 2.1g frequency range, the rate of decay of signal with respect to
Other network formats faster, thus the investigative range to wcdma target signal source for the impact.Traditional wcdma signal source detection side
Method is to first pass through radio-frequency front-end receptor to receive wireless signal, and then downstream digital signal processor obtains target wcmda handss
The uplink scrambling code of machine and its synchronous point position, then ascending pilot frequency energy signal computer is according to uplink scrambling code and its synchronous point position
Put the ascending pilot frequency energy calculating target wcdma signal source, thus realizing target wcdma signal source is accurately visited
Survey.But ascending pilot frequency energy signal computer is typically just calculated by frame to the signal of target wcdma signal source transmitting
Then the method that is averaging obtains the energy of the final transmitting of wcdma signal source, and this method is for the signal of very strong wcdma
Effectively, but when the wcdma signal receiving is very faint will poor effect because the transmitting of wcdma signal source
The energy that the signal coming over is searched for out for launching rule according to radio can not possibly be entirely effectively, comes according to theory of probability
Say that the number of effective energy and the relation of distance are normal distribution relations, thus conventionally blindness be weighted average
Calculating energy is that the investigative range of wcdma echo signal and accuracy are had a great impact.
It can be seen that traditional wcdma energy detection method the scope range of the detection of target and accuracy are had very big
Limitation, needs to improve.
Content of the invention
It is an object of the invention to overcoming existing detection method to have such problems as that detection range is near and its poor accuracy, provide
A kind of device enhancing wcdma infant laser signal detection method is selected based on sdr platform energy brush.
Realization the technical scheme is that
Select device by adding energy brush in based on sdr Software Radio platform, ascending pilot frequency energy signal computer is calculated
The result obtaining carries out statistics brush choosing and thus effectively improving whole sdr Software Radio platform, target wcdma mobile phone is sent out
Penetrate the detection range of signal and the accuracy of detection.
Specifically, this method comprises the steps:
1. radio-frequency front-end receptor carries out descending base station information and its signal of target wcdma mobile phone by front radio-frequency module
Received, thus preparing for Digital Signal Processing below；
2. downstream digital signal processor carries out signal processing to wcdma base station signal, by the parsing to base station signal
Process the uplink scrambling code obtaining target wcdma mobile phone and its synchronous dot position information；
3. ascending pilot frequency energy signal computer is up by target wcdma mobile phone that downstream digital signal processor is obtained
Scrambler and its synchronous dot position information carry out processing the pilot energy obtaining target mobile phones transmitting and its corresponding chip offset value；
4. energy brush selects device the result of ascending pilot frequency energy signal computer to be counted and selects algorithm to brush according to brush
Choosing, thus judging effective energy number, thus to pilot energy calculate result again counted and its information weight
New extraction, thus further lifting the resolution of the energy results of ascending pilot frequency energy signal computer, and then lifts wcdma
The capture range of signal and its acquisition accuracy.
The present invention has following advantages and a good effect:
1. capture accuracy is high: energy brush selects device can draw reception according to the result of calculation of ascending pilot frequency energy signal computer
To wcdma mobile phone signal be whether objective emission signal, thus improving the accuracy of target acquisition.
2. engagement range is remote: energy brush selects device by carrying out data to the result of calculation of ascending pilot frequency energy signal computer
Probability statistical analysis, from the result of calculation of ascending pilot frequency energy signal computer, effective data selected by brush, thus significantly
Lifting critical distance resolution, thus significantly lifting the distance of capture.
Brief description
Fig. 1 is the block diagram of the system；
Fig. 2 is the software flow pattern that energy brush selects algorithm.
In figure:
00 wcdma wireless base station；
10 sdr Software Radio platform,
11 radio-frequency front-end receptors,
12 ascending pilot frequency energy calculator,
13 downstream digital signal processors,
14 energy brushes select device
20 wcdma target signal source.
English to Chinese
1st, wcdma:wideband code division multiple access, Wideband CDMA Technology；
2nd, 3gpp:3rd generation partnership project, 3G (Third Generation) Moblie partner program；
3rd, sdr:software defined radio, software radio.
Specific embodiment
Describe in detail below in conjunction with drawings and Examples.
First, system
1st, overall
As Fig. 1, the system includes existing wcdma wireless base station 00 and wcdma target signal source 20；
It is provided with sdr Software Radio platform 10；
Described sdr Software Radio platform 10 include radio-frequency front-end receptor 11, ascending pilot frequency energy signal computer 12, under
Line number word signal processor 13 and energy brush select device 14；Radio-frequency front-end receptor 11 and downstream digital signal processor 13 respectively with
Ascending pilot frequency energy calculator 12 interaction；Downstream digital signal processor 13 and radio-frequency front-end receptor 11 interaction；Energy brush selects
Device 14 and ascending pilot frequency energy calculator 12 interaction.
Wcdma wireless base station 00 sends base station down wireless signal to radio-frequency front-end receptor 11；
Wcdma target signal source 20 sends up-link wireless signal to radio-frequency front-end receptor 11.
2nd, functional part
1) sdr Software Radio platform
Hardware configuration: using the hardware frame based on software radio general-purpose platform, selected the software radio of usrp2 to develop
Hardware configuration.
Embedded module includes setting radio-frequency front-end receptor 11, ascending pilot frequency energy signal computer 12, downstream digital letter
Number processor 13 and energy brush select device 14；
* radio-frequency front-end receptor 11: main realization is received and to wcdma to the downstream signal of wcdma wireless base station 00
The upward signal of target signal source 20 is received.
* ascending pilot frequency energy signal computer 12: the main calculating realizing outdoor target signal source energy, mainly exist
The echo signal theoretical position location index that nearby cheap 32 chips in left and right carry out peak value searching and its calculate peak value, obtains final product
To energy value and its energy value index, the peak value of the signal searching for out in theory just near theoretical value, specifically by radio
The transmission delay of signal determines.
* downstream digital signal processor 13: mainly the downstream wireless signals receiving from radio-frequency front-end receptor 11 are carried out
Signal processing is thus obtain the physical layer parameter such as uplink scrambling code of target wcdma mobile phone and the information of synchronous point position.
* energy brush selects device 14: the main result of calculation to ascending pilot frequency energy signal computer 12 carries out statistics brush choosing,
Thus useful energy signal selected by brush, thus the detection range of promotion signal and its accuracy.
2) wcdma wireless base station 00
Wcdma wireless base station 00 is the general transmitting base station based on international 3gpp standard, and the standard of base station is wcdma standard.
4) wcdma target signal source 20
Wcdma target signal source 20 is the terminal of the wcdma standard based on international 3gpp standard, is the target needing to be detected
Terminal.
3rd, the working mechanism of the system:
According to 3gpp agreement, the up-downgoing of wcdma system is that have strict synchronous sequence relation, line number word signal processor instantly
Behind the synchronous point position of 13 acquisition target wcdma mobile phones, then ascending pilot frequency energy signal computer 12 is believed according to downstream digital
About the synchronous point position of number processor 13,32 chips of skew start energy search and its search of chip offset value.Because real
During border there is the time delay in path and the impact of multipath delay thus chip position is typically all according to descending in wireless signal
The theoretical position that obtains of sync bit about within 10 chips, and the difference of the chip offset of the pilot energy of two frames in front and back
It is worth within 1, thus selecting the statistics brush that device 14 carries out signal energy to select work according to this theoretical basiss energy brush, by above
Two constraintss select effective energy out thus brushing, thus for faint for traditional method is directly averaging
Minimum detectable signal detection has good performance, and traditional method is directly averaging thus much invalid energy value is carried out averagely
Thus reducing the resolution to signal detection.New brush selects algorithm then to judge do not have selecting effective energy without brush
Echo signal is detected, and it is to judge that the energy calculating is effective or invalid that traditional method is directly averaging, thus
Improve the accuracy that target wcdma mobile phone signal is detected.
2nd, method
As Fig. 2,4. middle energy brush selects its working software flow process of device to be to this method step:
The energy that a, one group of capture obtain from pilot energy signal computer, preserve energy value and its index value in array a-
201；
B, all index values extracting in array a are saved in -202 in array b；
C, value m of the nth elements extracted in array b, and n adds 1-203；
D, judge n-th value index m scope -204, due to theoretical value near 31 it is considered to the delay of radio signal, m
Value should fall between 20 to 40, if m value is fallen between 20 to 40, carry out next step e, otherwise jump to one
Step c；
E, judge whether the difference of m and adjacent index value is less than or equal to 1-205, be then entrance next step f,
Otherwise jump to step c；
F, array a is extracted manipulative indexing value and its energy value it is stored in array c-206；
G, judge that whether n value is last one -207 in array b, be then entrance next step h, no jump to step c；
H, one array d of initialization, deposit the index value of 20-40, and the number of its index value are all set to 0-208 in array d；
All index values in i, retrieval array c, often occur once, then the number corresponding to the index value in array d adds 1-209；
The number sum -210 of continuous 4 index values in j, successively calculating array d；
K, record number sum one group of corresponding 4 index value -211 of maximum；
The corresponding energy value of above 4 index values in l, retrieval array c, and it is stored in array e-212；
All energy values in m, array e are effective energy -213.
Claims (2)
1. a kind of device enhancing wcdma infant laser signal detection method is selected based on sdr platform energy brush it is characterised in that:
1. radio-frequency front-end receptor carries out descending base station information and its signal of target wcdma mobile phone by front radio-frequency module
Received, thus preparing for Digital Signal Processing below；
2. downstream digital signal processor carries out signal processing to wcdma base station signal, by the parsing to base station signal
Process the uplink scrambling code obtaining target wcdma mobile phone and its synchronous dot position information；
3. ascending pilot frequency energy signal computer is up by target wcdma mobile phone that downstream digital signal processor is obtained
Scrambler and its synchronous dot position information carry out processing the pilot energy obtaining target mobile phones transmitting and its corresponding chip offset value；
4. energy brush selects device the result of ascending pilot frequency energy signal computer to be counted and selects algorithm to brush according to brush
Choosing, thus judging effective energy number, thus to pilot energy calculate result again counted and its information weight
New extraction, thus further lifting the resolution of the energy results of ascending pilot frequency energy signal computer, and then lifts wcdma
The capture range of signal and its acquisition accuracy.
2. as described in claim 1 based on sdr platform energy brush select device strengthen wcdma infant laser signal detection method, its feature
It is:
4. middle energy brush selects its working software flow process of device to be to described step:
The energy that a, one group of capture obtain from pilot energy signal computer, preserves energy value and its index value in array a
(201)；
B, all index values extracting in array a are saved in array b (202)；
C, value m of the nth elements extracted in array b, and n adds 1(203)；
D, judge n-th value index m scope (204), due to theoretical value near 31 it is considered to the delay of radio signal, m
Value should fall between 20 to 40, if m value is fallen between 20 to 40, carry out next step e, otherwise jump to one
Step c；
E, judge whether the difference of m and adjacent index value is less than or equal to 1(205), it is then entrance next step f, otherwise redirect
To step c；
F, array a is extracted manipulative indexing value and its energy value it is stored in array c(206)；
G, judge whether n value is last (207) in array b, be then entrance next step h, no jump to step c；
H, one array d of initialization, deposit the index value of 20-40, and the number of its index value are all set to 0(208 in array d)；
All index values in i, retrieval array c, often occur once, then the number corresponding to the index value in array d adds 1(209)；
The number sum (210) of continuous 4 index values in j, successively calculating array d；
K, record number sum one group of corresponding 4 index value (211) of maximum；
The corresponding energy value of above 4 index values in l, retrieval array c, and it is stored in array e(212)；
All energy values in m, array e are effective energy (213).
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737703A (en) * | 2020-12-21 | 2021-04-30 | 武汉虹旭信息技术有限责任公司 | Mobile communication signal source detection method and device, electronic equipment and storage medium |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060154691A1 (en) * | 2005-01-13 | 2006-07-13 | Oki Techno Centre (Singapore) Pte Ltd | Architecture and protocol for software defined radio system |
| CN101524271A (en) * | 2009-04-01 | 2009-09-09 | 成都途筏达科技有限公司 | Electrocardio cellphone monitoring method without base station or satellite signal |
| CN101730122A (en) * | 2009-12-11 | 2010-06-09 | 北京北方烽火科技有限公司 | User detection device suitable for CDMA2000 network and method |
| CN102932814A (en) * | 2012-08-24 | 2013-02-13 | 李月莲 | Signal detection method, device and system for mobile terminal |
| CN104244282A (en) * | 2014-10-11 | 2014-12-24 | 武汉虹旭信息技术有限责任公司 | Method for detecting WCDMA (wideband code division multiple access) signal source with aid of wireless data transmission module on basis of SDR (system definition record) platform |
| CN104410482A (en) * | 2014-12-08 | 2015-03-11 | 武汉虹旭信息技术有限责任公司 | Synchronization system for realizing WCDMA (wideband code division multiple access) by using TDM (timing-division multiplexing) based on FPGA (field programmable gate array) platform |
-
2016
- 2016-08-29 CN CN201610752713.2A patent/CN106357277B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060154691A1 (en) * | 2005-01-13 | 2006-07-13 | Oki Techno Centre (Singapore) Pte Ltd | Architecture and protocol for software defined radio system |
| CN101524271A (en) * | 2009-04-01 | 2009-09-09 | 成都途筏达科技有限公司 | Electrocardio cellphone monitoring method without base station or satellite signal |
| CN101730122A (en) * | 2009-12-11 | 2010-06-09 | 北京北方烽火科技有限公司 | User detection device suitable for CDMA2000 network and method |
| CN102932814A (en) * | 2012-08-24 | 2013-02-13 | 李月莲 | Signal detection method, device and system for mobile terminal |
| CN104244282A (en) * | 2014-10-11 | 2014-12-24 | 武汉虹旭信息技术有限责任公司 | Method for detecting WCDMA (wideband code division multiple access) signal source with aid of wireless data transmission module on basis of SDR (system definition record) platform |
| CN104410482A (en) * | 2014-12-08 | 2015-03-11 | 武汉虹旭信息技术有限责任公司 | Synchronization system for realizing WCDMA (wideband code division multiple access) by using TDM (timing-division multiplexing) based on FPGA (field programmable gate array) platform |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112737703A (en) * | 2020-12-21 | 2021-04-30 | 武汉虹旭信息技术有限责任公司 | Mobile communication signal source detection method and device, electronic equipment and storage medium |
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