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WO2012000345A1 - Procédé et dispositif permettant de calculer le gain de plusieurs liaisons de réception/liaisons d'émission - Google Patents

Procédé et dispositif permettant de calculer le gain de plusieurs liaisons de réception/liaisons d'émission Download PDF

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Publication number
WO2012000345A1
WO2012000345A1 PCT/CN2011/073626 CN2011073626W WO2012000345A1 WO 2012000345 A1 WO2012000345 A1 WO 2012000345A1 CN 2011073626 W CN2011073626 W CN 2011073626W WO 2012000345 A1 WO2012000345 A1 WO 2012000345A1
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WIPO (PCT)
Prior art keywords
link
calibration
signal
links
transmit
Prior art date
Application number
PCT/CN2011/073626
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English (en)
Chinese (zh)
Inventor
李少明
Original Assignee
深圳市华为安捷信电气有限公司
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Publication of WO2012000345A1 publication Critical patent/WO2012000345A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements

Definitions

  • the present invention relates to the field of wireless communications technologies, and in particular, to a method and an apparatus for calculating multiple receive link/transmit link gains.
  • BACKGROUND In a multi-antenna beamforming system, there are multiple transmission links and multiple receiving links. When the system is running, it is required to obtain the link gain value of each receiving link, and according to the link of each receiving link. The gain value is calculated by the Received Total Wideband Power (RTWP). The obtained RTWP can be used to judge the interference of the entire network, so that the network side can make an admission judgment according to the interference situation. Gain, closed loop power control based on the transmit link.
  • the frequency compensation and temperature compensation data of each receiving link and each transmitting link are measured by a manual measuring instrument, and the system operates.
  • the receiving link and/or the transmit link gain corresponding to the frequency compensation and temperature compensation data are queried according to the system operating frequency and temperature.
  • Embodiments of the present invention provide a method and apparatus for calculating a plurality of receive link/transmit link gains, which are used to solve the problem of manually measuring a receive link when the number of receive links/transmit links is large in the prior art. / Transmit link gain has a large workload and long time-consuming defects.
  • Embodiments of the present invention provide a method for calculating a plurality of receive link gains, including: dividing a calibration signal into multiple calibration signals, and coupling the multiple calibration signals to each of a plurality of reception links Receiving link
  • An embodiment of the present invention provides a method for calculating a plurality of transmit link gains, where the method includes: amplifying signals on each of the plurality of transmit links, and transmitting the amplified signals from each of the multiple transmit links A part of the signal is coupled to the signal of the link as a power control feedback signal to obtain a multi-channel power control feedback signal;
  • An embodiment of the present invention provides an apparatus for calculating a plurality of receiving link gains, where the apparatus includes: a signal processing module, a splitter, a plurality of directional couplers, and a measurement module, wherein the signal processing module comprises: a calibration unit and a calculation unit;
  • the signal processing module is configured to calibrate each of the plurality of receiving links by using the calibration signal, and calculate the gain of each of the receiving links;
  • the splitter is configured to divide a calibration signal into multiple calibration signals, and send the multiple calibration signals to the plurality of directional couplers respectively;
  • the directional coupler configured to couple each of the plurality of calibration signals divided by the splitter to each of the plurality of receive links, and pass through each of the receive chains The road is sent to the calibration unit;
  • the measuring module is configured to measure frequency compensation and temperature compensation data of a link of the one calibration signal before being sent to the splitter;
  • the calibration unit is configured to calibrate the corresponding receiving link by using the received calibration signal on each of the receiving links to obtain a correlation peak amplitude value of each of the receiving links;
  • the calculating unit is configured to obtain a calibration link gain according to the frequency compensation and temperature compensation data measured by the measurement module, and according to the calibration link gain, a correlation peak amplitude of each receiving link obtained by the calibration unit The value and the preset calibration signal data field power are calculated for each of the receive link gains.
  • An embodiment of the present invention provides an apparatus for calculating a plurality of transmit link gains, where the apparatus includes: a signal processing module, a plurality of power amplifiers, a plurality of first directional couplers, a radio frequency switch, and a plurality of signal processors, a plurality of second directional couplers, a combiner and a measurement module, wherein the signal processing module comprises: a calibration unit and a calculation unit;
  • the signal processing module is configured to calibrate each of the plurality of transmit links, and calculate a gain of each of the transmit links;
  • the power amplifier is configured to respectively amplify each signal on each of the transmitting links
  • the first directional coupler is configured to separately extract from each signal of the power amplifier Coupling a part of the signal as a power control feedback signal;
  • the RF switch is configured to select a power control feedback signal from the multiple power control feedback signals coupled by the plurality of first directional couplers, and feed back to the computing unit;
  • the signal processor is configured to perform isolation and filtering on the amplified signal of the power amplifier
  • the second directional coupler is configured to respectively couple a part of the signal as a calibration signal from each signal processed by the signal processor;
  • the combiner is configured to combine the multiple calibration signals coupled by the plurality of second directional couplers, and send the combined calibration signals to the calibration unit;
  • the measuring module is configured to measure frequency compensation and temperature compensation data of a link where the combined calibration signal of the combiner is located;
  • the calibration unit is configured to distinguish, according to the signal characteristics on each of the transmit links, a calibration signal from each of the transmit links in the combined calibration signal of the combiner, and use each of the differentiated calibrations
  • the signal is calibrated to the corresponding transmit link to obtain a correlation peak amplitude value of each of the transmit links;
  • the calculating unit is configured to obtain a calibration link gain according to the frequency compensation and temperature compensation data measured by the measurement module, and according to The calibration link gain, the correlation peak amplitude value of each transmission link obtained by the calibration unit, the preset calibration signal data domain power, and the power control feedback signal corresponding to each transmission link selected by the radio frequency switch
  • the power calculates each of the transmit link gains.
  • An embodiment of the present invention provides a multi-antenna wireless transceiver system, where the system includes the foregoing apparatus for calculating a plurality of receiving link gains and a device for calculating a transmit link gain, and a duplexer for transmitting a chain The signal is isolated from the signal on the receive link.
  • FIG. 1 is a schematic flow chart of an embodiment of a method for calculating a receive link gain according to the present invention
  • FIG. 2 is a schematic flow chart of an embodiment of a method for calculating a transmit link gain according to the present invention
  • FIG. 3 is a schematic structural diagram of an apparatus for calculating a gain of a receiving link according to the present invention
  • FIG. 4 is a schematic structural diagram of an apparatus for calculating a transmit link gain according to the present invention.
  • FIG. 5 is a schematic structural diagram of an embodiment of a multi-antenna wireless transceiver system according to the present invention.
  • the technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention.
  • the embodiments are a part of the embodiments of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.
  • FIG. 1 is a schematic flowchart of a method for calculating a plurality of receiving link gains according to the present invention. As shown in FIG. 1, the method includes:
  • Step 101 Divide a calibration signal into multiple calibration signals, and couple the multiple calibration signals to each of the plurality of receiving links;
  • the transmitted one calibration signal can be divided into multiple calibration signals by the splitter, and the multiple calibration signals are coupled to each of the plurality of receive links through the directional coupler.
  • Step 102 Measure frequency compensation data and temperature compensation data of a link of a calibration signal before being divided into multiple calibration signals, that is, measure frequency compensation data and temperature compensation data of a link where the calibration signal before being sent to the splitter is located. ;
  • the prior art is to manually measure the frequency compensation and temperature compensation data of each receiving link, and then obtain the corresponding receiving link gain according to the frequency compensation and temperature compensation data of each receiving link, when the receiving link
  • the measured workload is significantly increased; however, the embodiment of the present invention only measures the frequency compensation and temperature compensation data of the link where the calibration signal is sent before the splitter, since the calibration signal before being sent to the splitter is all the way Therefore, the workload of the measurement is greatly reduced.
  • Step 103 Calibrate a corresponding receiving link by using a calibration signal coupled to each of the receiving links to obtain a correlation peak amplitude value of each receiving link in the multiple receiving chains.
  • each receiving link is assigned the same working frequency point, and after the multi-antenna system is operated, the corresponding receiving link is calibrated by using the calibration signal coupled to each receiving link to obtain multiple receiving links.
  • the relative peak amplitude value of each receive link is assigned the same working frequency point, and after the multi-antenna system is operated, the corresponding receiving link is calibrated by using the calibration signal coupled to each receiving link to obtain multiple receiving links. The relative peak amplitude value of each receive link.
  • the frequency point is the number given to the fixed frequency, and the frequency interval is 200KHz, so it can be separated from 890MHz, 890.2MHz, 890.4MHz, 890.6MHz, 890.8MHz according to the frequency interval of 200KHz.
  • the 891MHz 915MHz is divided into 125 radio frequency segments, and each frequency band is numbered, from 1,
  • the working frequency is assigned to the receiving link, that is, the operating frequency is assigned to the receiving link, that is, the receiving link only receives the signal of the specified frequency.
  • the corresponding receiving link can be periodically calibrated using a calibration signal coupled to each receiving link according to a preset time;
  • the corresponding receive link can be calibrated with a calibration signal coupled to each receive link when the temperature changes; or a calibration signal coupled to each receive link can be utilized when any of the receive link gains change Calibrate the corresponding receive link.
  • Step 104 Acquire a calibration link according to the measured frequency compensation data and the temperature compensation data. Benefit, and calculate each receive link gain based on the calibration link gain, the associated peak amplitude value for each receive link, and the preset calibration signal data field power. Specifically, let peakl be the correlation peak amplitude value of each receiving link obtained after calibration.
  • Ppn, RX, dBFs is the preset calibration signal digital domain power
  • G ⁇ 'd ⁇ is the calibration link gain obtained from the measured frequency compensation and temperature compensation data
  • G RX link is the gain of each receiving link
  • Factory BX Link (1) For example, when calculating the gain of the first receiving link, A pecM is the correlation peak amplitude value of the first receiving link; when calculating the gain of the second receiving link, A peak ⁇ is the second The correlation peak amplitude value of the receiving link, and so on, can obtain the gain of each receiving link in multiple receiving links.
  • the correlation peak amplitude value of each receiving link is obtained. Therefore, by changing the correlation peak amplitude value of each receiving link in formula (1), the gain of the corresponding receiving link can be obtained. . Since the calibration of each receiving link can be dynamically performed according to a preset condition, the gain of each receiving link obtained by the formula (1) is also dynamically updated, and therefore, according to the dynamically updated receiving link gain.
  • the RTWP is also relatively accurate, according to the more accurate RTWP can better reflect the interference of the entire network.
  • step 104 "acquiring the calibration link gain based on the measured frequency compensation data and temperature compensation data" may also be performed in step 102. Additionally, the step 102 can be performed concurrently with the step 101.
  • the calibration signal is only one way before the one calibration signal is divided into multiple calibrations.
  • the measurement is divided into the frequency compensation and temperature compensation data of the link where the calibration signal of one channel before the multi-path is separated, which not only greatly reduces the workload of the measurement but also saves the prior art. Measuring time, when producing multi-antenna equipment, it also greatly improves the production efficiency; and calibrates the corresponding receiving link by using the calibration signal on each receiving link, and the correlation peak amplitude value of multiple receiving links can be obtained by one calibration. Therefore, the gain of multiple receiving links can be obtained.
  • the calibration operation may be automatically started according to a preset condition, which may be: a preset time, a temperature change, or any change of a receiving link gain, and the like. Therefore, it can be greatly affected by cables, measuring instruments and manual manual operations, and the accuracy and consistency between the gains of each receiving link are greatly improved. Moreover, the frequency compensation and temperature compensation of the receiving link are measured in the prior art. The data needs to interrupt the multi-antenna system, which is not only inconvenient to use, but also has low accuracy of the received link gain according to the measurement result, and the present invention can realize the frequency compensation of the link where the online calibration signal is located without interrupting the multi-antenna system.
  • a preset condition which may be: a preset time, a temperature change, or any change of a receiving link gain, and the like. Therefore, it can be greatly affected by cables, measuring instruments and manual manual operations, and the accuracy and consistency between the gains of each receiving link are greatly improved.
  • the frequency compensation and temperature compensation of the receiving link are measured in the
  • Example 2 The temperature compensates the data, so the accuracy of the received link gain obtained according to the measurement result is further improved; therefore, the RTWP obtained according to the more accurate receiving link gain is also more accurate, and the more accurate RTWP can be better. Reflects the interference of the entire network.
  • Example 2 The temperature compensates the data, so the accuracy of the received link gain obtained according to the measurement result is further improved; therefore, the RTWP obtained according to the more accurate receiving link gain is also more accurate, and the more accurate RTWP can be better. Reflects the interference of the entire network. Example 2
  • FIG. 2 is a schematic flowchart of a method for calculating a plurality of transmit link gains according to the present invention. As shown in FIG. 2, the method includes:
  • Step 201 Amplify a signal on each of the plurality of transmit links, and couple a part of the signal from the amplified signal of each transmit link as a power control feedback signal to obtain a multi-channel power control feedback signal.
  • the present invention can be applied to a multi-antenna system, and thus, a plurality of transmission links can refer to a plurality of transmission links of the multi-antenna system.
  • Step 202 Isolating and filtering the amplified signals of each transmitting link to obtain a multi-path processed signal, and coupling out from the processed signals of each of the multiple transmitting links. A part of the signal is used as a calibration signal to obtain a multi-channel calibration signal;
  • the amplified signal is isolated by a circulator, and then the isolated signal is passed.
  • the filter is filtered, and each of the filtered signals is coupled to a part of the signal through the directional coupler as a calibration signal.
  • Step 203 Combine the coupled multi-path calibration signals, and measure frequency compensation and temperature compensation data of the link where the combined calibration signals are located;
  • the multi-channel calibration signals can be combined by a combiner and the frequency compensation and temperature compensation data of the link of the combined calibration signal can be measured.
  • the prior art is to manually measure the frequency compensation and temperature compensation data of the power control feedback receiving link of each transmitting link, and obtain the transmission link gain according to the frequency compensation and temperature compensation data, when the transmitting link is compared. For a long time, the workload of the measurement is significantly increased. However, in the embodiment of the present invention, only the frequency compensation and temperature compensation data of the link where the calibration signal is combined after the combiner is measured, since only one calibration signal is combined after the combination of the combiner, The workload of the measurement is greatly reduced.
  • Step 204 According to the signal characteristics on each of the transmitting links, distinguish the calibration signals from each of the transmitted links in the combined calibration signal, and calibrate the corresponding transmitting links by using each of the differentiated calibration signals to obtain multiple pieces.
  • all the transmitting links are assigned the same working frequency point, and after the multi-antenna system is operated, the combined calibration signals are distinguished according to the signal characteristics on each transmitting link, that is, the separated from each transmitting
  • the calibration signal on the link calibrates the corresponding transmission link by using each of the differentiated calibration signals to obtain a correlation peak amplitude value of each of the plurality of transmission links.
  • a working frequency point is assigned to the transmitting link, that is, an operating frequency is assigned to the transmitting link, that is, the transmitting link only transmits a signal of a specified frequency.
  • the frequency interval is 200KHz
  • the frequency point can be divided into multiple small frequency points, that is, 200KHz can be divided into intervals of 2KHz or other frequencies, so according to these Small frequency points to distinguish the calibration signals obtained from each transmit link.
  • the characteristics of time slots or code sequences of signals on each transmission link are different, Features such as time slots or code sequences are used to distinguish each signal.
  • the corresponding transmission links are calibrated by using each of the differentiated calibration signals to obtain correlation peak amplitude values of each of the plurality of transmission links.
  • the corresponding transmitting link may be calibrated periodically by using each of the differentiated calibration signals according to a preset time; or, when the temperature changes, each of the differentiated calibration signals may be used to calibrate the corresponding transmitting link; or any one of the transmitting links may be used.
  • the link gain changes the corresponding transmit link is calibrated using each of the differentiated calibration signals.
  • Step 205 Acquire a calibration link gain according to the measured frequency compensation and temperature compensation data, and according to the calibration link gain, the calibrated correlation peak amplitude value of each transmission link, the preset calibration signal data domain power, and each The power of the power control feedback signal corresponding to the transmit link calculates the gain of each transmit link in the plurality of transmit links.
  • a peak 2 be the correlation peak amplitude value of each transmitting link, ⁇ ⁇ ' ⁇ ⁇
  • G TX alibraticn is the calibration chain obtained according to the measured frequency compensation and temperature compensation data.
  • Road gain, P PC — feedba is the power of the power control feedback signal corresponding to each transmit link, G PC — /e ⁇ . ⁇
  • a peak 2 is the correlation peak amplitude value of the first transmit link
  • P PC — is the power control coupled from the first transmit link
  • ⁇ 2* is the correlation peak amplitude value of the second transmit link
  • c- is the power control coupled from the second transmit link
  • the power of the feedback signal, and so on, can be derived from the gain of each of the multiple transmit links.
  • each transmit link gain can be adjusted according to a preset threshold to achieve a desired gain. For example, each transmit link gain is
  • the performance of the multi-antenna system is optimal, and the gain of the first transmit link is 21 DB, and the gain of the second transmit link is 19 DB, ..., then the gain of the first transmit link can be 21
  • the DB is reduced to 20DB, and the second transmit link gain is increased from 19DB to 20DB, etc., until all transmit link gains are adjusted to preset thresholds, so that the performance of the multi-antenna system is optimal.
  • the correlation peak amplitude value of each transmission link is obtained. By changing the correlation peak amplitude value of each transmission link in formula (2), the corresponding transmission link gain can be obtained.
  • each transmit link can be automatically initiated and dynamically performed, so each transmit link gain obtained by equation (2) is also dynamically updated, so each transmit link gain is adjusted to The preset threshold may also be dynamically updated, and the dynamically adjusted transmit link gain is used for closed-loop power control to achieve accurate control of the closed-loop power.
  • step 203 "and measuring the frequency compensation and temperature compensation data of the link of the combined calibration signal" in step 203 may be performed simultaneously with step 204 or before or after step 204.
  • the calibration signal is coupled out from the signal on the transmission link before being outputted to the antenna. Because it is closer to the antenna, the actual power output from the signal on the transmission link to the antenna can be more accurately reflected.
  • the transmission link is amplified.
  • a part of the signal is coupled as a calibration signal, and the obtained multi-channel calibration signals are combined into one calibration signal, and the frequency compensation and temperature compensation data of the link where the combined calibration signal is located are measured, and then according to each The characteristics of the signals on the transmission link distinguish the combined calibration signals, and the corresponding transmission links are calibrated by using each of the calibration signals to obtain the correlation peak amplitude values of each of the plurality of transmission links, and finally according to The correlation peak amplitude value of each transmitting link and the power control feedback signal corresponding to each transmitting link obtain the gain of each transmitting link.
  • only the frequency compensation and temperature compensation data of the link where the combined calibration signal is located are measured, which greatly reduces the workload of the measurement compared with the prior art, saves time, and improves the production efficiency of the device.
  • the calibration operation may be automatically started according to a preset condition, and the preset condition may be: meeting a preset time, when the temperature changes, or when any receiving link gain changes, etc. . Therefore the calibration results are not affected by cables, measuring instruments and artificial hands. The impact of the operation, thereby greatly improving the accuracy and consistency of the gain of each transmission link; Moreover, in the prior art, it is necessary to interrupt the multi-antenna system when measuring the frequency compensation and temperature compensation data of the transmission link, which is not only inconvenient to use.
  • the accuracy of the transmission link gain obtained according to the measurement result is low, and the present invention can realize the frequency compensation and temperature compensation data of the link where the calibration signal is located on the line without interrupting the multi-antenna system, and thus the transmission obtained according to the measurement result
  • the accuracy of the link gain is further improved; since one transmission link generally has two frequency points, that is, two frequencies, in the prior art, one transmission link is calibrated, that is, one carrier is performed at a time. Calibration, can not accurately measure the small difference of the transmit link for each carrier gain, and the present invention calibrates each transmit link after specifying the operating frequency, so that calibration and power control can be performed for each carrier, which can be accurately measured.
  • Outgoing transmit link for small differences in gain per carrier, improving power control Can improve the emission band gain flatness.
  • the apparatus includes: a signal processing module 30, a splitter 31, a plurality of directional couplers 32, and a measuring module 33, where
  • the signal processing module 30 includes a calibration unit 301 and a calculation unit 302;
  • a signal processing module 30 configured to calibrate each receiving link by using a calibration signal, and calculate a gain of each receiving link
  • the splitter 31 is configured to divide a calibration signal into multiple calibration signals, and send the multiple calibration signals to the plurality of directional couplers 32;
  • the directional coupler 32 is configured to couple each of the plurality of calibration signals divided by the splitter 31 to each of the plurality of receiving links, and send the calibration signal to the calibration unit 301 through each of the receiving links. ;
  • a measuring module 33 configured to measure frequency compensation and temperature compensation data of a link where the calibration signal sent before the splitter 31 is located;
  • the calibration unit 301 is configured to calibrate the corresponding connection by using the calibration signal received on each receiving link Receiving a link, obtaining correlation peak amplitude values of each of the plurality of receiving chains;
  • the calculating unit 302 is configured to obtain a calibration link gain according to the frequency compensation and temperature compensation data measured by the measurement module 33, and according to the calibration link gain, the correlation peak amplitude value of each receiving link obtained by the calibration unit 301, and a preset
  • the calibration signal data field power calculates the gain of each receive link in the plurality of receive links.
  • the signal processing module 30 may further include: a signal sending unit 300, configured to send a calibration signal;
  • the splitter 31 is configured to split the calibration signal sent by the signal sending unit 300 into multiple calibration signals, and send the multiple calibration signals to the plurality of directional couplers 32, respectively.
  • the calibration signal is only one way before dividing one calibration signal into multiple calibrations.
  • the measurement is divided into the frequency compensation and temperature compensation data of the link where the calibration signal of one channel before the multi-path is separated, which not only greatly reduces the workload of the measurement, saves time, improves the production efficiency of the device, and utilizes the prior art.
  • the calibration signal on each receiving link calibrates the corresponding receiving link, and one calibration can obtain the correlation peak amplitude value of multiple receiving links and the gain of multiple receiving links.
  • the calibration operation may be automatically started according to the preset condition, where the preset condition may be: when the preset time is met, when the temperature changes, or when any of the receiving link gains changes. and many more. Therefore, it is not affected by cables, measuring instruments and manual manual operations, which greatly improves the accuracy and consistency between the gain of each receiving link.
  • the frequency compensation and temperature compensation data of the receiving link are measured in the prior art. It is necessary to interrupt the multi-antenna system, which is not only inconvenient to use, but also has low accuracy of the received link gain according to the measurement result, and the present invention can realize the frequency compensation and temperature compensation data of the on-line measurement receiving link without interrupting the multi-antenna system. Therefore, the accuracy of the received link gain obtained according to the measurement result is further improved; the RTWP obtained according to the relatively accurate receiving link gain is also relatively accurate, and the more accurate RTWP can better reflect the interference of the entire network. happening.
  • the apparatus includes: a signal processing module 40, a plurality of power amplifiers 41, a plurality of first directional couplers 42, and a radio frequency switch. 43.
  • the signal processing module 40 is configured to calibrate each of the plurality of transmit chains and calculate a gain of each of the transmit links.
  • the power amplifier 41 is configured to respectively amplify each signal on each of the transmitting links; the first directional coupler 42 is configured to respectively couple a part of the signals from each of the signals amplified by the power amplifier 41 as power control. Feedback signal;
  • the RF switch 43 is configured to select a power control feedback signal from the plurality of power control feedback signals coupled by the plurality of first directional couplers 42 and feed back to the calculation unit 402;
  • the signal processor 44 is configured to perform isolation and filtering processing on the amplified signal of the power amplifier 41.
  • Each of the signal processors 44 includes a circulator and a filter for amplifying the signal amplified by the power amplifier 41. Isolation is performed to ensure that the signal flows in one direction; a filter is used to filter the signal isolated by the circulator so that a part of the allowed frequency signal passes smoothly, and the signal of another part of the frequency is not greatly inhibited. by.
  • a second directional coupler 45 for respectively coupling a part of the signal from each signal processed by the signal processor 44 as a calibration signal
  • the combiner 46 is configured to combine the plurality of calibration signals coupled by the plurality of second directional couplers 45, and send the combined calibration signals to the calibration unit 401;
  • the measuring module 47 is configured to measure frequency compensation and temperature compensation data of the link where the combined calibration signal of the combiner 46 is located;
  • the calibration unit 401 is configured to distinguish the calibration signal from each of the transmission links in the combined calibration signal of the combiner 46 according to the signal characteristics on each of the transmission links, and use each of the differentiated calibrations.
  • the signal calibrates the corresponding transmit link to obtain a correlation peak amplitude value of each of the plurality of transmit links;
  • the calculating unit 402 is configured to obtain a calibration link gain according to the frequency compensation and temperature compensation data measured by the measurement module 47, and according to the calibration link gain, the correlation peak amplitude value of each transmission link obtained by the calibration unit 401, preset
  • the power of each of the plurality of transmit links is calculated by the power of the calibration signal data field and the power control feedback signal corresponding to each of the transmit links selected by the RF switch 43.
  • the signal processing module 40 may further include: a signal sending unit 400, configured to transmit a signal through each of the plurality of transmitting links;
  • the power amplifier 41 is configured to respectively amplify each signal sent by the signal transmitting unit 400.
  • the signal processing module 40 may further include: an adjusting unit, configured to adjust, according to a preset threshold, each transmit link gain calculated by the calculating unit, so that each transmit link gain reaches a preset width value.
  • the second directional coupler is located behind the filter. Before the antenna, since the second directional coupler is close to the antenna, the actual power of the signal output on the transmission link to the antenna can be more accurately reflected.
  • the transmission link is amplified.
  • the signal After the signal is isolated and filtered, a part of the signal is coupled as a calibration signal, and the obtained multi-channel calibration signals are combined into one calibration signal, and the frequency compensation and temperature compensation data of the link where the combined calibration signal is located are measured, and then transmitted according to each
  • the characteristics of the signals on the link distinguish the combined calibration signals, and the corresponding transmission links are calibrated by using each of the separated calibration signals to obtain correlation peak amplitude values of each of the plurality of transmission chains, and finally according to The correlation peak amplitude value of each transmitting link and the power control feedback signal corresponding to each transmitting link obtain the gain of each transmitting link.
  • only the frequency compensation of the link where the combined calibration signal is located is measured.
  • the temperature compensation data greatly reduces the workload of the measurement compared with the prior art, saves time, and improves the production efficiency of the device.
  • the calibration operation may be automatically started according to the preset condition, where the preset condition may be: when the preset time is met, when the temperature changes, or when any of the receiving link gains changes. and many more. Since it is automatically calibrated according to preset conditions, the calibration results are not affected by cables, measuring instruments and manual manual operations, which greatly improves the accuracy and consistency of each transmit link gain. Moreover, measurement in the prior art When the frequency compensation and temperature compensation data of the transmission link are used, the multi-antenna system needs to be interrupted, which is not only inconvenient to use, but also has low accuracy of the transmission link gain obtained according to the measurement result, and the present invention can realize on-line measurement without interrupting the multi-antenna system.
  • FIG. 5 is a schematic structural diagram of an embodiment of a multi-antenna wireless transceiver system according to the present invention.
  • FIG. 5 is a combination of FIG. 3 and FIG. 4, that is, a device for calculating a receive link gain and calculating a transmit link gain.
  • the devices are combined into one system.
  • the signal processing module in Embodiment 3 and the signal processing module in Embodiment 4 can be combined into one processing module, the splitter in Embodiment 3, and the combination in Embodiment 4.
  • the router can be a device, that is to say, the combiner can function to combine and split the signal, and the splitter can also function to split and combine the signals.
  • a duplexer is set up, after the combiner is combined, that is, a duplexer is placed on the link before the splitter is split.
  • the duplexer functions to isolate the signals on the transmit link and the receive link to ensure that both the receive link and the transmit link can work simultaneously.
  • the essence of the duplexer is two filters, one for the filter of the receiving link and the other for the filter of the transmitting link, so the signal on the transmitting link and the receiving link can be phased by the duplexer. Isolation ensures that both the receiving link and the transmitting link can work simultaneously. Since the duplexer is added to the system shown in Fig. 5, the filter in the signal processor of the embodiment 4 can be removed. Except for this, the functions of the other modules or devices in Embodiment 3 and Embodiment 4 are the same as those in the system shown in Embodiment 5, and will not be described herein.
  • the multi-antenna wireless transceiver system of the embodiment of the present invention may be a base station or the like.
  • Embodiment 3 and Embodiment 4 can achieve all the effects and purposes of Embodiment 3 and Embodiment 4. Further, after combining the devices shown in Embodiment 3 and Embodiment 4, the device is saved, and the devices are saved. Space is more convenient to use.

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  • Engineering & Computer Science (AREA)
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  • Arrangements For Transmission Of Measured Signals (AREA)

Abstract

La présente invention concerne un procédé et un dispositif permettant de calculer les gains de plusieurs liaisons de réception/liaisons d'émission, et elle se rapporte au domaine des technologies de la communication sans fil. Selon ledit procédé : un signal d'étalonnage est divisé en plusieurs signaux d'étalonnage, et chacun de ces signaux d'étalonnage est couplé à l'une des liaisons de réception ; les données de la compensation de fréquence et de la compensation de température de la liaison à laquelle appartient le signal d'étalonnage avant la division sont mesurées ; la liaison de réception est étalonnée et la valeur de l'amplitude maximale corrélative de chaque liaison de réception est obtenue ; puis un gain de liaison d'étalonnage est obtenu et chaque gain de liaison de réception est calculé. Ledit dispositif comprend un module de traitement de signaux, un diviseur, plusieurs coupleurs directifs et un module de mesure. Le module de traitement de signaux est doté d'une unité d'émission de signaux, d'une unité d'étalonnage et d'une unité de calcul. Cette invention permet de réduire la charge de travail nécessaire à la mesure du gain de plusieurs liaisons de réception et du gain de plusieurs liaisons d'émission dans un système à antennes multiples, de gagner du temps lors de la mesure et d'améliorer la précision et l'homogénéité du gain des liaisons de réception/d'émission.
PCT/CN2011/073626 2010-06-28 2011-05-04 Procédé et dispositif permettant de calculer le gain de plusieurs liaisons de réception/liaisons d'émission WO2012000345A1 (fr)

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