CN101119150A - Method for implementing intelligent automatic level control and intelligent gain control - Google Patents
Method for implementing intelligent automatic level control and intelligent gain control Download PDFInfo
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- CN101119150A CN101119150A CNA2007101519379A CN200710151937A CN101119150A CN 101119150 A CN101119150 A CN 101119150A CN A2007101519379 A CNA2007101519379 A CN A2007101519379A CN 200710151937 A CN200710151937 A CN 200710151937A CN 101119150 A CN101119150 A CN 101119150A
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Abstract
The invention relates to a method which can realize the intelligent ALC control and intelligent gain adjustment with the low noise amplifier module based on the repeater; the method comprising: the repeater is separated into a plurality of sections corresponding to the output power with the ALC control range of low noise amplifier module; and the voltage required by voltage-controlled attenuator is searched when every section is in control, and then the voltage value is charted and saved; the repeater applies the low noise amplifier module to invoke the corresponding voltage value which is then user for controlling the voltage-controlled attenuator; the repeater is separated into a plurality of sections with the ATT attenuation range of low noise amplifier module; and then the real attenuation value and the theory value of the numerically controlled attenuator are compared when the ATT attenuation of every section are attenuating, after that,the error is calculated to acquire the compensation value which is charted and saved; the repeater applies the low noise amplifier module to invoke the corresponding error compensation value, then the ATT value and the compensation value are used for controlling the numerically controlled attenuator; thus, the ATT attenuation is precise.
Description
Technical field
The present invention relates to wireless communication technology field, relate in particular to intelligent ALC (automatic electric-level control) and intelligent ATT (automatic gain adjusting) are realized in a kind of repeater with the LNA module method.
Background technology
In today that mobile communication develops rapidly, the overlay area of which kind of radio communication all can produce weak signal area and blind area, and to some remote districts and the few blind area of number of users, it is too high to set up the base station cost, infrastructure is also complicated, provide for this reason a kind of cost low, set up simply, have but that small base station function, cost-effective equipment---the repeater is necessary.Therefore, important role is being played the part of with the LNA module in the repeater in cordless communication network.
The repeater belongs to the frequency multiplying arrangement, is meant a kind of radio transmission transferring equipment that plays the signal humidification in the wireless communication transmissions process.The basic function of repeater strengthens radiofrequency signal power exactly.The repeater by donor antenna pickoff signals in existing overlay area,, is transmitted into filtering signal once more after power amplifier amplifies and treats the overlay area carrying out fabulous isolation with leading to outer signal by band pass filter in down link.In the uplink path, the signal of the travelling carriage mobile phone in the overlay area is transmitted into corresponding base station with same working method after by up amplification link processing, thereby reaches the signal transmission of base station and mobile phone.
Use in the LNA modular system in the repeater, main effect is that the fainter radio frequency signal that comes from base station or mobile phone from aerial reception is carried out small-signal amplification and processing, and the signal after the processing and amplifying outputs to power amplifier module and carries out power amplification; Because power amplifier module is operated under the powerful state, so some corresponding protection measures must be arranged, just can make whole repeater normal and stable operation.
The repeater with the ALC in the LNA modular system and ATT just in order to protect the repeater to design by normal steady operation.
The effect of ALC control is when reaching the ALC controlling value of Set For Current when output signal value, even input signal increases again, output signal also remains at and the corresponding output of current ALC controlling value, so just guarantee can not produce excessive output signal to power amplifier module, damage equipment in order to avoid power is excessive; The effect of ATT control is according to the current power demand or because power is excessive the gain of repeater with the LNA module to be decayed, and can rationally use resource can play a protective role again like this.
ALC control is realized that by voltage-controlled attenuator spare processing method is the attenuation characteristic of a collection of voltage-controlled attenuator of test at present, finds out its attenuation corresponding voltage value, then these group data is used as empirical value.There is following problem in this method: 1, owing to voltage-controlled attenuator property difference reason, the ALC control accuracy is not high; 2, owing to the not high error that causes of accuracy needs frequent maintenance.
ATT control is realized that by numerical-control attenuator spare processing method is that the repeater directly removes to control numerical-control attenuator with the LNA module according to current ATT controlling value at present.There is following problem in this method: owing to numerical-control attenuator property difference reason, there is error in the ATT control accuracy.
Summary of the invention
Purpose of the present invention is in order to overcome defective or the problem that above-mentioned prior art exists, and a kind of high reliability, high efficiency, simple the method for repeater with ALC control of LNA module intelligence and intelligent ATT control that realize are provided.
This method comprises the steps:
A, the repeater is divided into a plurality of segments that corresponding power output is unit with 1dBm with the LNA module with the ALC control range;
B and each segment (being every 1dBm) that ALC is controlled are built table and preservation to required voltage search when starting to control;
C, repeater are called corresponding voltage value with the LNA module according to the ALC value of current needs control, go to control the purpose that voltage-controlled attenuator reaches ALC control with this voltage again;
D, the repeater is divided into respective modules every 1dB that gains with LNA modules A TT attenuation range is a lot of segments of unit;
E and each segment (being every 1dB) that ATT is decayed, the actual attenuation value and the theoretical pad value of numerical-control attenuator compare when decay, calculate its error value of being compensated and build this offset of table preservation;
F, repeater are called corresponding error compensation value with the LNA module according to the ATT value of current needs decay, go to control the purpose that numerical-control attenuator reaches ATT decay accuracy with current ATT value+offset again.
By the application of foregoing invention technical scheme, can make the repeater control the remarkable technique effect that following several aspects are arranged with the ALC of LNA module intelligence control and intelligent ATT:
Application module of the present invention is controlled automatically according to current ALC value in real time, and sets up corresponding control voltmeter at the voltage-controlled attenuator of each module.So avoid artificial in-situ processing, control precision is guaranteed, improve the operating efficiency that safeguard the repeater, quality is protected.
It is to set up corresponding ATT control compensation table at the numerical-control attenuator of each module that the present invention uses, and module is called corresponding offset according to current ATT value, and currency is added that offset removes to control numerical-control attenuator, has guaranteed the ATT control accuracy.
Description of drawings
Fig. 1 is repeater LNA modules A TT departure schematic diagram;
Fig. 2 is foundation and ALC and the ATT Based Intelligent Control flow chart of repeater of the present invention with LNA modules A LC voltmeter and ATT compensation meter.
Embodiment
In order to make the solution of the present invention clear more detailed, the specific embodiment of the invention is described in further detail below in conjunction with accompanying drawing.
Fig. 2 is foundation and ALC and the ATT Based Intelligent Control flow chart of repeater of the present invention with LNA modules A LC voltmeter and ATT compensation meter;
The flow process that realizes the present invention program in conjunction with example is as follows:
Step a, the repeater is divided into a plurality of segments that corresponding power output is unit with 1dBm with LNA modules A LC control range;
Step b and every segment (being every 1dBm) that ALC is controlled, the voltage-controlled attenuator required voltage is searched for and is built table and preservation when starting to control;
Step c, suppose that current to need the ALC value of control be 2dBm (power output that is the LNA module is no more than 2dBm) with the LNA module in the repeater, this moment, the repeater was called corresponding voltage value with the LNA module according to the ALC value of current needs control, go to control the purpose that voltage-controlled attenuator reaches ALC control, as shown in Figure 2;
Steps d, the repeater is divided into respective modules every 1dB that gains with LNA modules A TT control range is a lot of segments of unit;
Step e, calculate numerical-control attenuator, and preserve this error compensation value in the actual attenuation value of each segment (1dB) and the error of theoretical pad value;
Step f, suppose that the repeater is 4dB (be ATT control number be 4) with the current gain-adjusted of LNA module, between actual attenuation and the theoretical decay error is arranged as shown in Figure 1, so need call the error compensation value that is calculated by attenuated error this moment, add that with current ATT value the error compensation value goes to control the purpose that numerical-control attenuator reaches the gain-adjusted accuracy again;
The preparation method of step g, error compensation value is: each value in the ATT scope (being every 1dB) is removed to control numerical-control attenuator, the actual attenuation value that obtains and the difference of theoretical pad value, need the value that compensates exactly, be called the error compensation value, the error compensation value is with integer calculations (comprising positive negative) and build the table preservation, as shown in Figure 2.
The above is specific embodiments of the invention only, is not limited to the present invention, and to those skilled in the art, technical solution of the present invention can have various changes or variation.All within spirit of the present invention and principle, any modification of being made, be equal to replacement, improvement etc. and all should be included within the claim scope of the present invention.
Claims (6)
1. realize the method for intelligent ALC control and intelligent gain-adjusted it is characterized in that this method comprises the steps: with the LNA module based on the repeater for one kind
A, the repeater is divided into a plurality of segments that corresponding power output is unit with 1dBm with LNA modules A LC control range;
B and each segment that ALC is controlled, promptly every 1dBm, the voltage-controlled attenuator required voltage is searched for and is built table and preservation when starting to control;
C, repeater are called corresponding voltage value with the LNA module according to the ALC value of current needs control, go to control the purpose that voltage-controlled attenuator reaches ALC control with this voltage again;
D, the repeater is divided into respective modules every 1dB that gains with LNA modules A TT attenuation range is a lot of segments of unit;
E and each segment that ATT is decayed, promptly every 1dB, the actual attenuation value and the theoretical pad value of numerical-control attenuator compare when decay, calculate its error value of being compensated and build this offset of table preservation;
F, repeater are called corresponding error compensation value with the LNA module according to the ATT value of current needs decay, go to control the purpose that numerical-control attenuator reaches ATT decay accuracy with current ATT value+offset.
2. method according to claim 1, it is characterized in that: adopting the scope of dividing ALC control and ATT decay is a plurality of segments, each segment step-length is 1, and the method for each segment employing being built table is preserved the magnitude of voltage of ALC control and the error compensation value of ATT decay, make the repeater time reach the function of intelligent ALC control and intelligent gain-adjusted in work, increase work efficiency and the stability and the reliability of system with the LNA module.
3. as method as described in the claim 2, it is characterized in that:
Dividing the algorithm that the ALC control range builds table is: it is many segments of 1 that the ALC control range is divided into step-length, and the ALC of each segment is started to control voltage search, finds out the corresponding optimum value of each point and sets up a voltmeter and preserve.
4. as method as described in the claim 2, it is characterized in that:
The algorithm that starts to control the voltage search is: change the voltage-controlled attenuator input voltage repeater is complementary with LNA module power output and the current ALC value of control that needs, till searching an optimum voltage.
5. as method as described in the claim 2, it is characterized in that: dividing the algorithm that the ATT attenuation range builds table is: it is many segments of 1 that the ATT control range is divided into step-length, Error Calculation is carried out in ATT decay to each segment, finds out the corresponding error compensation value of each point and sets up an offset table and preservation.
6. as method as described in the claim 2, it is characterized in that:
The algorithm that Error Calculation obtains offset is: the control numerical-control attenuator, the difference of theory of computation decay and actual attenuation, this difference is an error, as the absolute value of error greater than 1, adjust (comprise and raising and downward modulation) ATT number of decaying, go again to control numerical-control attenuator up to the absolute value of error less than 1, the quantity that this moment, ATT adjusted is offset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101519379A CN101119150B (en) | 2007-09-21 | 2007-09-21 | Method for implementing intelligent automatic level control and intelligent gain control |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007101519379A CN101119150B (en) | 2007-09-21 | 2007-09-21 | Method for implementing intelligent automatic level control and intelligent gain control |
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| CN101119150A true CN101119150A (en) | 2008-02-06 |
| CN101119150B CN101119150B (en) | 2011-11-23 |
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| CN2007101519379A Expired - Fee Related CN101119150B (en) | 2007-09-21 | 2007-09-21 | Method for implementing intelligent automatic level control and intelligent gain control |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710338A (en) * | 2012-05-31 | 2012-10-03 | 福建三元达通讯股份有限公司 | Method for realizing automatic gain compensation of simulative optic-fiber repeater according to light detection |
| CN103222210A (en) * | 2012-12-10 | 2013-07-24 | 华为技术有限公司 | Multipath fading analogue method and multipath fading analogue means |
| CN109743094A (en) * | 2018-12-04 | 2019-05-10 | 京信通信***（中国）有限公司 | Digital high-frequency amplification station gain control method, device, digital high-frequency amplification station and storage medium |
| CN110572224A (en) * | 2019-08-22 | 2019-12-13 | 三维通信股份有限公司 | Method, device, system and readable storage medium for reducing base station receiving background noise |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5722063A (en) * | 1994-12-16 | 1998-02-24 | Qualcomm Incorporated | Method and apparatus for increasing receiver immunity to interference |
| US6107878A (en) * | 1998-08-06 | 2000-08-22 | Qualcomm Incorporated | Automatic gain control circuit for controlling multiple variable gain amplifier stages while estimating received signal power |
| ES2265122T3 (en) * | 2004-02-20 | 2007-02-01 | Research In Motion Limited | METHOD AND APPLIANCE TO IMPROVE THE EFFICIENCY OF POWER AMPLIFICATION IN WIRELESS COMMUNICATION SYSTEMS WITH HIGH RELATIONSHIPS BETWEEN THE VALUES OF PEAK POWER AND AVERAGE POWER. |
-
2007
- 2007-09-21 CN CN2007101519379A patent/CN101119150B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710338A (en) * | 2012-05-31 | 2012-10-03 | 福建三元达通讯股份有限公司 | Method for realizing automatic gain compensation of simulative optic-fiber repeater according to light detection |
| CN103222210A (en) * | 2012-12-10 | 2013-07-24 | 华为技术有限公司 | Multipath fading analogue method and multipath fading analogue means |
| CN103222210B (en) * | 2012-12-10 | 2015-02-25 | 华为技术有限公司 | Multipath fading analogue method and multipath fading analogue means |
| CN109743094A (en) * | 2018-12-04 | 2019-05-10 | 京信通信***（中国）有限公司 | Digital high-frequency amplification station gain control method, device, digital high-frequency amplification station and storage medium |
| CN109743094B (en) * | 2018-12-04 | 2021-05-28 | 京信通信***（中国）有限公司 | Digital repeater gain control method, device, digital repeater and storage medium |
| CN110572224A (en) * | 2019-08-22 | 2019-12-13 | 三维通信股份有限公司 | Method, device, system and readable storage medium for reducing base station receiving background noise |
| CN110572224B (en) * | 2019-08-22 | 2022-03-15 | 三维通信股份有限公司 | Method, device, system and readable storage medium for reducing base station receiving background noise |
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| CN101119150B (en) | 2011-11-23 |
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Granted publication date: 20111123 Termination date: 20170921 |