CN202634428U - Multichannel correction system and multichannel base station system - Google Patents
Multichannel correction system and multichannel base station system Download PDFInfo
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- CN202634428U CN202634428U CN2012201715120U CN201220171512U CN202634428U CN 202634428 U CN202634428 U CN 202634428U CN 2012201715120 U CN2012201715120 U CN 2012201715120U CN 201220171512 U CN201220171512 U CN 201220171512U CN 202634428 U CN202634428 U CN 202634428U
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Abstract
The utility model provides a multichannel correction system, and a multichannel base station system comprising the above multichannel correction system. The multichannel correction system and the multichannel base station system realize channel correction. For a down link, a data insertion and acquisition device respectively inserts correction sequences in various down channels, and then receives correction data in corresponding correction channels. For an up link, the data insertion and acquisition device inserts correction sequences into in the correction channels, and then respectively receives correction data in various up channels. The data insertion and acquisition device transmits the correction data to a time delay and correction factor computing device, the time delay and correction factor computing device computes corresponding time delay, and gain and phase correction factors, the correction factors of a time delay correction device and a gain and phase correction device are adjusted, the time delays, and the gains and phases of the multiple channels are corrected, the multiple channels of a communication system keep good consistency, and the multichannel correction system is suitable for both a broadband multichannel system and a narrowband multichannel system.
Description
Technical field
The utility model relates to communication multipath correction technical field, relates in particular to a kind of multipath correction system, and a kind of multichannel base station system with above-mentioned multipath correction system.
Background technology
Widely-used each interchannel consistency to multi-channel system of digital beam-forming technology has proposed requirement; But prior art is difficult to guarantee each channel hardware keeping consistency fully under different service time and different working temperatures, so the multipath correction technology is arisen at the historic moment.
Broadband such as 3G, LTE system occurs, and the complex multiplication of constant-gain and phase place is proofreaied and correct and can't be satisfied system index in traditional band; Complex coefficient filter correction amplitude and phase place in the technical use of satellite antenna are reasonable multipath correction technology, but in wide-band communication system, still do not have relevant utilization.
The utility model content
For solving the time delay and the mutually inconsistent technical problem of the width of cloth of each passage of broadband multi-channel communication systems in the prior art, the utility model provides a kind of can carry out the multipath correction system that consistency is proofreaied and correct to each passage of broadband multi-channel communication systems.
A kind of multipath correction system; Comprise: data insertion and harvester, time delay adjustment device, amplitude and phase correction device and time delay and correction factor calculation device; Said data are inserted and are connected said time delay and correction factor calculation device with harvester, and said time delay is connected said time delay adjustment device and said amplitude and phase correction device respectively with the correction factor calculation device.Said data are inserted and harvester inserts correction sequence in passage or correction channel; And, export said correction data to said time delay and correction factor calculation device from correction channel corresponding or the passage reception correction data corresponding with said correction channel with said passage; Said time delay and correction factor calculation device receive said correction data, calculate the time delay and the amplitude and phase correction coefficient of each passage, export the time delay of each passage to said time delay adjustment device, and export said amplitude and phase correction coefficient to said amplitude and phase correction device; Said time delay adjustment device receives the time delay of each passage, and each passage is carried out delay correction; Said amplitude and phase correction device receives said amplitude and phase correction coefficient, and each passage is carried out amplitude and phase correction.
The utility model also provides a kind of multichannel base station system with above-mentioned multipath correction system.
Compared with prior art, multipath correction system of the utility model and multichannel base station system are realizing channel correcting.For down link, said data are inserted and harvester inserts correction sequence respectively in each down going channel, and the calibrated channel in correspondence receives correction data then; For up link, said data are inserted and harvester inserts correction sequence in correction channel, in each data feedback channel, receive correction data respectively then.Said data are inserted and harvester exports correction data to time delay and amplitude and phase correction coefficient that said time delay and correction factor calculation device are fallen into a trap and got it right and answer; Adjust the correction coefficient of said time delay adjustment device and said amplitude and phase correction device; Multichannel time delay and amplitude-phase are proofreaied and correct, make a plurality of passages of communication system keep good consistency.
The utility model pair can both be suitable for broadband multi-channel system and arrowband multi-channel communication systems, and the requirement of RF index is reduced, and can reach to produce to need not to debug, and has improved efficient.
Description of drawings
Fig. 1 is the structural representation of the utility model multipath correction system;
Fig. 2 is the partial structurtes sketch map of the multichannel base station system of the utility model multipath correction system applies;
Fig. 3 is the flow chart that the multichannel base station system of the utility model is carried out multipath correction;
Fig. 4 is the sketch map that the multichannel base station system of the utility model is carried out the correction data acquiring process of down going channel timing;
Fig. 5 is the sketch map that the multichannel base station system of the utility model is carried out the correction data acquiring process of data feedback channel timing.
Embodiment
Below in conjunction with accompanying drawing the utility model is done description more specifically.
See also Fig. 1, Fig. 1 is the structural representation of the utility model multipath correction system.
Said multipath correction system comprises:
Data are inserted and harvester 11, time delay and correction factor calculation device 12, time delay adjustment device 13 and amplitude and phase correction device 14; Said data are inserted with harvester 11 and are connected said time delay and correction factor calculation device 12, and said time delay is connected said time delay adjustment device 13 and said amplitude and phase correction device 14 respectively with correction factor calculation device 12.
Said data are inserted and harvester 11 inserts correction sequence in passage or correction channel; And, export said correction data to said time delay and correction factor calculation device 12 receiving correction data through correction channel or the passage from correspondence after the chain-circuit time delay;
Said time delay and correction factor calculation device 12 receive said correction data; Calculate the time delay and the amplitude and phase correction coefficient of each passage; Export the time delay of each passage to said time delay adjustment device 13, and export said amplitude and phase correction coefficient to said amplitude and phase correction device 14;
Said time delay adjustment device 13 receives the time delay of each passage, and each passage is carried out delay correction;
Said amplitude and phase correction device 14 receives said amplitude and phase correction coefficient, and each passage is carried out amplitude and phase correction.
Said data are inserted and harvester 11 is responsible for correction sequence timing, location are inserted in the normal link, (be generally chain-circuit time delay) subsequently at a fixed time from calibrated channel said time delay and correction factor calculation device 12 are taken out, kept offering to correction data.Said time delay obtains corresponding channel time delay to the data of each paths through signal correction on the one hand with correction factor calculation device 12, and it is poor to handle out channel time delay at last, and said time delay adjustment device is given in configuration; Correction data with two paths offers said amplitude and phase correction device 14 execution RLS algorithms (the minimum quadratic power algorithm of recurrence) on the other hand; Reference channel inserts the desired signal input; Passage to be corrected inserts the input signal port of RLS, calculates corresponding amplitude and phase correction coefficient.The key of broadband correction is to select to reflect the correct transmission signal of width of cloth phase change in the passage band.Said time delay adjustment device 13 changes channel time delay according to the configuration time delay value, is used for the time delay difference of clock integral multiple between balance channel.Said amplitude-phase means for correcting preferably is made up of complex coefficient FIR filter.Be used to proofread and correct the difference of interior each interchannel amplitude of passband and phase place.FIR (Finite Impulse Response) filter; Limit for length's unit impulse response filter is promptly arranged; It is the primary element in the digital information processing system; It can have strict linear phase-frequency characteristic when guaranteeing any amplitude-frequency characteristic, its unit sample respo is time-limited simultaneously, thereby filter is stable system.Use complex coefficient FIR filter to constitute the amplitude and phase correction device in the utility model, make the multipath correction system of the utility model be applicable to broadband multi-channel systems such as 3G, LTE more.
Further, said multipath correction system also comprises a controller (figure does not show), and said controller issues control command, triggers said data and inserts with harvester 11 and begin to insert correction sequence, extracts correction data, and the beginning multipath correction is operated.
Make a concrete analysis of the workflow of the multipath correction system of the utility model below:
1), controller issues corrective command, said data insert with harvester 11 in the fixed position of the Frame of down going channel insertion correction sequence, and with other down going channel correspondence position zero clearings; After fixed delay (being generally chain-circuit time delay), this module begins to gather from calibrated channel and receives the data of returning and storage;
2), to descending other passages, said data are inserted with harvester 11 and are repeated above-mentioned steps 1) operation up to accomplishing all down going channels insertion correction sequence and having gathered correction data;
3), said time delay and correction factor calculation device 12 read the said correction data of all down going channels from said data insertion and harvester 11; The correction data of choosing a down going channel is as standard channel; Through the relevant delay inequality that obtains out other passages and this passage, offer said time delay adjustment device 13 on the one hand; On the other hand the time delay processing of each circuit-switched data is fallen, calculated the coefficient of the complex coefficient filter of said amplitude and phase correction device 14 cores;
4), with the correction data of the standard channel chosen in the step 3) as expected data; Select a paths to be input through the correction data of time delay processing; Use the RLS algorithm computation at certain thresholding once, finally obtain this passage in the corresponding complex coefficient of said amplitude and phase correction device 14 up to the energy of error vector.
5), repeating step 4), accomplish up to all down going channels and to proofread and correct.
6), said controller diverter switch, said data are inserted with harvester 11 and are begun in calibrated channel, to insert correction sequence, in all data feedback channels, receive correction data then simultaneously.
7), according to the correction data repeating step 3 of each said data feedback channel), 4), 5), accomplish the correction of all data feedback channels.
See also Fig. 2, Fig. 2 is the partial structurtes sketch map of the multichannel base station system of the utility model multipath correction system applies.
Said multichannel base station system comprises the said multipath correction system of the utility model, and said multichannel base station system comprises a plurality of data feedback channels and a plurality of down going channel.
As a kind of preferred implementation, when carrying out multipath correction in said multipath correction system, the correction channel that said data feedback channel is corresponding is one of them down going channel; The correction channel that said down going channel is corresponding is one of them data feedback channel.
As shown in Figure 2; The down going channel of said multichannel base station system comprises baseband processing unit 21 and digital up converter 22; Said baseband processing unit 21, said data are inserted and are connected successively with harvester 11, said amplitude and phase correction device 14, said digital up converter 22 and said time delay adjustment device 13, from the downlink data of said baseband processing unit 21 outputs successively through said data insertion and harvester 11, said amplitude and phase correction device 14, said digital up converter 22 and said time delay adjustment device 13.Outputing to CFR, DPD, DA, RF, PA etc. at last redispatches away.
Said data feedback channel comprises baseband processing unit 21 and digital down converter 23, and said time delay adjustment device 13, said digital down converter 23, said amplitude and phase correction device 14, said data are inserted and are connected successively with said baseband processing unit 21 with harvester 11; Upstream data is through LNA, RF, the AD of up link; Insert through said time delay adjustment device 13, said digital down converter 23, said amplitude and phase correction device 14 and said data successively then and harvester 11 after, be input to said baseband processing unit 21.
Insert the correction sequence of inserting with harvester 11 for said data, be preferably the PN sequence, it has superperformances such as generating simple, pseudorandom, is desirable selection.
In this execution mode, the baseband processing unit of said data feedback channel and said down going channel is integrated into same baseband processing unit.
See also Fig. 3, Fig. 3 is the flow chart that the multichannel base station system of the utility model is carried out multipath correction.
The multipath correction that said multichannel base station system is carried out is divided into up correction and descending correction two parts, respectively shown in Fig. 3 (a) and 3 (b).
When carrying out descending timing, as shown in Figure 4:
A1, said data are inserted and harvester 11 elder generations insert correction sequence, other passage zero clearings in the fixed position of the base band data frame of down going channel 1;
A2, a certain data feedback channel of selection depart from the correction data of the local receive path 1 of said fixing position as calibrated channel with the general time delay of link at Frame;
A3, at the same position of next Frame; Said data are inserted and harvester 11 inserts same correction sequence at down going channel 2; Other passage zero clearings, with same data feedback channel as calibrated channel, the correction data of the same position receive path 2 in the data of calibrated channel.Other down going channels are done same processing, instruct the correction data of obtaining all down going channels;
A4, read the correction data of all down going channels.Because of adopting same data feedback channel to receive correction data, therefore in the said correction data that same data feedback channel receives, comprised delay inequality, the amplitude-phase difference information between each down going channel then through above-mentioned each down going channel as calibrated channel.
A5, calculation delay and amplitude and phase correction coefficient.For the correction data that receives, with wherein one the tunnel, be without loss of generality and select down going channel 1 as a reference, thereby other down going channel data are done the relevant delay inequality of seeking definite other down going channels of relevant peaks and down going channel 1 with it.
cor
i＝∑x1
kxi
j
max(cor
i)
Equally, still select down going channel 1 to be reference, the data that other each road down going channels are got rid of delay inequality are sought one group of coefficient through the RLS algorithm of said time delay and correction factor calculation device 12 makes amplitude-phase between each road in certain difference.
A6, the above-mentioned processing of process have finally obtained time delay adjustment parameter and amplitude and phase correction coefficient, write synchronously respectively in the time delay adjustment device 13 and amplitude and phase correction device 14 of each passage.
When carrying out up timing, as shown in Figure 5.
B1, said data are inserted and harvester 11 selects certain down going channel as calibrated channel, insert correction sequence, other passage zero clearings in the fixed position of its base band data frame;
B2, receive correction data with the place that the general time delay of link departs from the said fixing position at all data feedback channels;
B3, read correction data; Because of adopting same down going channel to launch data, through having comprised delay inequality, the amplitude-phase difference information between data feedback channel in the correction data that receives behind above-mentioned same down going channel and each data feedback channel as calibrated channel.
B4, calculation delay and amplitude and phase correction coefficient.Follow-up process is handled with the same relevant delay inequality of downlink data, RLS amplitude-phase difference is handled, and has finally obtained time delay adjustment parameter and amplitude and phase correction coefficient;
B5, write each passage synchronously respectively time delay adjustment device 13 and amplitude and phase correction device 14 in.
Above-described the utility model execution mode does not constitute the qualification to the utility model protection range.The modification of being done within any spirit and principle at the utility model, be equal to replacement and improvement etc., all should be included within the claim protection range of the utility model.
Claims (6)
1. a multipath correction system is characterized in that, comprising:
Data insertion and harvester, time delay adjustment device, amplitude and phase correction device and time delay and correction factor calculation device; Said data are inserted and are connected said time delay and correction factor calculation device with harvester, and said time delay is connected said time delay adjustment device and said amplitude and phase correction device respectively with the correction factor calculation device;
Said data are inserted and harvester inserts correction sequence in passage or correction channel; And, export said correction data to said time delay and correction factor calculation device from correction channel corresponding or the passage reception correction data corresponding with said correction channel with said passage;
Said time delay and correction factor calculation device receive said correction data, calculate the time delay and the amplitude and phase correction coefficient of each passage, export the time delay of each passage to said time delay adjustment device, and export said amplitude and phase correction coefficient to said amplitude and phase correction device;
Said time delay adjustment device receives the time delay of each passage, and each passage is carried out delay correction;
Said amplitude and phase correction device receives said amplitude and phase correction coefficient, and each passage is carried out amplitude and phase correction.
2. multipath correction as claimed in claim 1 system is characterized in that said amplitude and phase correction device is made up of complex coefficient FIR filter.
3. a multichannel base station system is characterized in that, comprises like claim 1 or 2 described multipath correction systems.
4. multichannel base station system as claimed in claim 3 is characterized in that, said multichannel base station system comprises a plurality of data feedback channels and a plurality of down going channel, and the correction channel that said data feedback channel is corresponding is one of them down going channel; The correction channel that said down going channel is corresponding is one of them data feedback channel.
5. multichannel base station system as claimed in claim 4; It is characterized in that; Said down going channel comprises baseband processing unit and digital up converter; Said baseband processing unit, said data insertion and harvester, said amplitude and phase correction device, said digital up converter and said time delay adjustment device are connected successively, and the downlink data of exporting from said baseband processing unit passes through said data insertion and harvester, said amplitude and phase correction device, said digital up converter and said time delay adjustment device successively.
6. multichannel base station system as claimed in claim 4; It is characterized in that; Said data feedback channel comprises baseband processing unit and digital down converter, and said time delay adjustment device, said digital down converter, said amplitude and phase correction device, said data insertion and harvester are connected with said baseband processing unit successively; Upstream data through behind said time delay adjustment device, said digital down converter, said amplitude and phase correction device and insertion of said data and the harvester, is input to said baseband processing unit successively.
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| CN2012201715120U CN202634428U (en) | 2012-04-20 | 2012-04-20 | Multichannel correction system and multichannel base station system |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391123A (en) * | 2013-07-25 | 2013-11-13 | 中国科学院上海微系统与信息技术研究所 | Satellite-borne multi-beam receiving antenna correction system and method |
| CN103701537A (en) * | 2013-12-17 | 2014-04-02 | 电子科技大学 | Broadband receiving channel comprehensive checking method |
| CN104158601A (en) * | 2013-12-31 | 2014-11-19 | 南京长峰航天电子科技有限公司 | Amplitude and phase calibration method based on digital channelization |
| CN104954083A (en) * | 2015-06-16 | 2015-09-30 | 上海华为技术有限公司 | Antenna array calibration method, device and system |
| WO2018039926A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Calibration method and communication device |
| CN107911178A (en) * | 2017-11-14 | 2018-04-13 | 京信通信系统（中国）有限公司 | A kind of method and device of passage calibration |
| CN110417487A (en) * | 2019-07-30 | 2019-11-05 | 京信通信系统（中国）有限公司 | A kind of channel calibrating installation and method, computer installation and readable storage medium storing program for executing |
| CN114172592A (en) * | 2021-12-24 | 2022-03-11 | 中国电子科技集团公司第十四研究所 | Calibration system and calibration method of radio frequency digital T/R component comprehensive test system |
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2012
- 2012-04-20 CN CN2012201715120U patent/CN202634428U/en not_active Expired - Lifetime
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103391123A (en) * | 2013-07-25 | 2013-11-13 | 中国科学院上海微系统与信息技术研究所 | Satellite-borne multi-beam receiving antenna correction system and method |
| CN103391123B (en) * | 2013-07-25 | 2016-06-08 | 中国科学院上海微系统与信息技术研究所 | Satellite-borne multi-beam receiving antenna correction system and correction method thereof |
| CN103701537A (en) * | 2013-12-17 | 2014-04-02 | 电子科技大学 | Broadband receiving channel comprehensive checking method |
| CN103701537B (en) * | 2013-12-17 | 2016-03-30 | 电子科技大学 | A kind of broadband reception passage integrated calibration method |
| CN104158601A (en) * | 2013-12-31 | 2014-11-19 | 南京长峰航天电子科技有限公司 | Amplitude and phase calibration method based on digital channelization |
| CN104954083A (en) * | 2015-06-16 | 2015-09-30 | 上海华为技术有限公司 | Antenna array calibration method, device and system |
| WO2018039926A1 (en) * | 2016-08-30 | 2018-03-08 | 华为技术有限公司 | Calibration method and communication device |
| CN107911178A (en) * | 2017-11-14 | 2018-04-13 | 京信通信系统（中国）有限公司 | A kind of method and device of passage calibration |
| WO2019096010A1 (en) * | 2017-11-14 | 2019-05-23 | 京信通信系统（中国）有限公司 | Channel calibration method and device |
| CN107911178B (en) * | 2017-11-14 | 2020-01-14 | 京信通信系统（中国）有限公司 | Channel calibration method and device |
| CN110417487A (en) * | 2019-07-30 | 2019-11-05 | 京信通信系统（中国）有限公司 | A kind of channel calibrating installation and method, computer installation and readable storage medium storing program for executing |
| CN110417487B (en) * | 2019-07-30 | 2023-06-27 | 京信网络系统股份有限公司 | Channel calibration device and method, computer device and readable storage medium |
| CN114172592A (en) * | 2021-12-24 | 2022-03-11 | 中国电子科技集团公司第十四研究所 | Calibration system and calibration method of radio frequency digital T/R component comprehensive test system |
| CN114172592B (en) * | 2021-12-24 | 2023-12-19 | 中国电子科技集团公司第十四研究所 | Calibration system and calibration method of radio frequency digital T/R assembly comprehensive test system |
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