WO2012075773A1 - Procédé et dispositif de commande d'étalonnage de puissance - Google Patents

Procédé et dispositif de commande d'étalonnage de puissance Download PDF

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Publication number
WO2012075773A1
WO2012075773A1 PCT/CN2011/073874 CN2011073874W WO2012075773A1 WO 2012075773 A1 WO2012075773 A1 WO 2012075773A1 CN 2011073874 W CN2011073874 W CN 2011073874W WO 2012075773 A1 WO2012075773 A1 WO 2012075773A1
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WO
WIPO (PCT)
Prior art keywords
power
domain gain
gain
antenna port
digital domain
Prior art date
Application number
PCT/CN2011/073874
Other languages
English (en)
Chinese (zh)
Inventor
赵东亮
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012075773A1 publication Critical patent/WO2012075773A1/fr

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3036—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers
    • H03G3/3042—Automatic control in amplifiers having semiconductor devices in high-frequency amplifiers or in frequency-changers in modulators, frequency-changers, transmitters or power amplifiers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/11—Monitoring; Testing of transmitters for calibration
    • H04B17/13—Monitoring; Testing of transmitters for calibration of power amplifiers, e.g. gain or non-linearity

Definitions

  • the present invention relates to the field of communications technologies, and in particular, to a power calibration control method and apparatus.
  • the mathematical derivation proves that the intermodulation products of the equal-interval communication system increase rapidly with the increase of the number of channels, and the intermodulation products falling into the intermediate channel are the most serious.
  • the call drop, crosstalk and signal discontinuity in CDMA communication are actually intermittent. Both are closely related to ACPR.
  • the present invention provides a power calibration control method and apparatus to ensure that the system has no interference for a full period of time from start-up to stop operation.
  • the invention provides a power calibration control method, the method comprising:
  • the digital domain gain is gradually increased until the total power of the antenna port reaches the predetermined value.
  • the power calibration control method has the following characteristics:
  • the stepwise increasing the digital domain gain until the total power of the antenna port reaches the predetermined value comprises: turning on a digital pre-distortion (DPD) function, and after the DPD enters the pre-distortion state, step by step with a set frequency and stepping The digital domain gain is increased until the total power of the antenna port reaches the predetermined value.
  • DPD digital pre-distortion
  • the power calibration control method further has the following features:
  • the amount of change required to be adjusted by the analog domain gain includes:
  • the power calibration control method further has the following features:
  • the DPD function When the DPD function is turned on, and when the DPD enters the pre-distortion state, the digital domain gain is gradually increased at a set frequency and step until the total power of the antenna port reaches the predetermined value, and is turned on and running.
  • the DPD function establishes a predistortion table adapted to a nonlinear characteristic of a high power amplifier (PA);
  • PA high power amplifier
  • the frequency and the step are set according to the update speed of the pre-disappearance table.
  • the power calibration control method may have the following features: the total power of the antenna port is a predetermined power of the multiplexed signal at the antenna port after the multiplexed signal is amplified by the downlink digital domain gain and the analog domain gain of the wireless transceiver. value.
  • the invention also provides a power calibration control device, the device comprising:
  • the adjustment module is set to adjust the digital domain gain to achieve power balance between the baseband carrier in the digital domain and to achieve the baseband combining power to a specified value;
  • the calculation module is configured to calculate the amount of change of the analog domain gain when the total power of the antenna port reaches a predetermined value
  • Controlling a fallback module configured to control the digital domain gain to collectively roll back the amount of change; controlling an increase module, configured to control the analog domain gain to increase the amount of change; and increasing the module, setting to gradually increase The large digital domain gains until the total power of the antenna port reaches the predetermined value.
  • the power calibration control device can have the following characteristics:
  • the increasing module is configured to enable a digital pre-distortion (DPD) function, and after the DPD enters a pre-distortion state, gradually increase the digital domain gain at a set frequency and step until the total power of the antenna port reaches The predetermined value.
  • DPD digital pre-distortion
  • the power calibration control device can also have the following characteristics:
  • the calculation module is configured to calculate a variation amount of the analog domain gain to be adjusted in a range in which the total power of the antenna port reaches a predetermined value and the gain dynamic adjustment is satisfied.
  • the power calibration control device may further have the following characteristics: the total power of the antenna port is the power that the carrier signal reaches at the antenna port after being amplified by the downlink digital domain gain and the analog domain gain of the wireless transceiver. Predetermined value.
  • FIG. 2 is a schematic diagram of a link structure of a downlink module of a transmitter with closed-loop digital pre-distortion technology according to an embodiment of the present invention
  • FIG. 3 is a flow chart of an embodiment of a power calibration control method of the present invention.
  • FIG. 4 is a schematic structural view of an embodiment of a power calibration control device according to the present invention.
  • _y a 0 + 1 ⁇ + ⁇ 2 ⁇ 2 + ⁇ 3 ⁇ 3 ( 1 )
  • x is the input signal
  • y is the output signal
  • i Q , ⁇ , . « 2 and 3 are coefficients; assuming the input signal is a two-tone signal ( ⁇ 1 ⁇ ⁇ 2):
  • the intermodulation component IM3 is:
  • the size of the intermodulation component IM3 is determined by the coefficient " 3 " and the signal amplitude.
  • the coefficient " 3 " is a nonlinear characteristic characterization coefficient of the power amplifier, which is a constant. Therefore, for For the same system, the magnitude of the intermodulation component IM3 depends on the magnitude of the signal amplitude. If the signal amplitude is small, the amplitude of the intermodulation component is small, and vice versa.
  • FIG. 2 it is a schematic diagram of a downlink module link architecture of a transmitter with closed-loop digital pre-distortion technology, ( ⁇ ., which is a digital gain adjustment part in the downlink (each carrier channel gain is adjustable), ⁇ ⁇ . ⁇ 1 . g is the analog gain adjustment section (combination gain adjustment) in the downlink, and the GC feedback link analog gain adjustment section (combination gain adjustment).
  • ⁇ . which is a digital gain adjustment part in the downlink (each carrier channel gain is adjustable)
  • ⁇ ⁇ . ⁇ 1 . g is the analog gain adjustment section (combination gain adjustment) in the downlink
  • the GC feedback link analog gain adjustment section (combination gain adjustment).
  • the digital domain gain ⁇ £ ⁇ 2 ⁇ is usually adjusted first, in order to compensate the gain difference of each carrier on the generated link, so as to achieve power balance between the baseband carriers and the baseband combining power reaches a specified value. Then adjust the analog domain gain X fl ⁇ 1 . g , make the total power of the antenna port reach the specified power of the system.
  • the intermodulation distortion of the PA output also increases.
  • the invention provides a power calibration control method, the method comprising:
  • Step 1 Adjust the digital domain gain to achieve power balance between the baseband carrier in the digital domain and achieve the baseband combining power to a specified value
  • Step 2 When calculating the total power of the antenna port to reach a predetermined value, the analog domain gain needs to be adjusted.
  • the total power of the antenna port is increased by the carrier signal through the downlink digital domain of the wireless transceiver
  • the predetermined value of the power reached at the antenna port after the two parts of the gain and the analog domain gain are amplified
  • Step 3 Control the digital domain gain to roll back the change amount as a whole
  • Step four controlling the analog domain gain to increase the amount of change
  • Step 5 Gradually increase the digital domain gain until the total power of the antenna port reaches the predetermined value. This step can be achieved by turning on the digital predistortion (DPD) function and gradually increasing the digital domain gain at a set frequency and step when the DPD enters the predistortion state.
  • DPD digital predistortion
  • Step 302 calculation When the total power of the antenna port reaches the specified value, G TX (ie ⁇ ..) requires an increased amount of change;
  • Step 304 the gain in the analog domain ( ⁇ 1 g Ak adjusted according to the amount of change is about ( ⁇ 1 g increases Ak....;
  • Step 305 Turn on the DPD.
  • Step 306 Determine whether the DPD enters the pre-distortion state, if yes, go to step 307, otherwise, wait, and go to step 306; Step 307, gradually recover the digital domain gain with a certain frequency and step;
  • the closed-loop system requires the loop gain to be stable within a certain range. Normal operation, therefore, the method of fixed digital domain gain adjustment analog domain gain is not universal and achievable.
  • the power calibration control method described in the present invention because ⁇ ' is not in the DPD loop, adjust ⁇ ' has no effect on the DPD loop gain, and does not cause adverse consequences for the operation of the DPD, so the method is universal and achievable.
  • FIG. 4 it is a schematic structural diagram of an embodiment of the power calibration control device of the present invention.
  • the increasing module may be configured to enable a digital pre-distortion (DPD) function, and gradually increase the digital domain gain at a set frequency and step after the DPD enters a pre-distortion state, until the antenna port The total power reaches the predetermined value.
  • the increasing module may further be configured to enable and run the DPD function, and establish a predistortion table adapted to a nonlinear characteristic of a high power amplifier (PA); satisfy an adjacent channel power ratio (ACPR) indicator of the wireless communication system.
  • PA high power amplifier
  • ACPR adjacent channel power ratio
  • the calculation module may be configured to calculate a change amount of the analog domain gain that needs to be adjusted when the total power of the antenna port reaches a predetermined value and within a dynamic range that satisfies the power detection and the dynamic adjustment of the gain.
  • the total power of the antenna port is a predetermined value of the power that is obtained at the antenna port after the combined carrier signal is amplified by the downlink digital domain gain and the analog domain gain of the wireless transceiver.
  • the power calibration control device can implement the system from the start-up to the stop operation for a full period of time without interference.
  • the specific implementation method is the same as the foregoing power calibration control method embodiment, and details are not described herein.
  • Industrial Applicability provides a power calibration control method and apparatus for adjusting the digital domain gain to achieve power balance between the baseband carrier and the baseband multiplexed power to a specified value; and calculating the total power of the antenna port to a predetermined value, the analog domain
  • the gain needs to be adjusted by the amount of change; controlling the digital domain gain to roll back the amount of change as a whole; controlling the analog domain gain to increase the amount of change; and gradually increasing the digital domain gain until the total antenna port power reaches the
  • the predetermined value is to ensure that the system has no interference for all time from power on to stop.
  • the power calibration control method and apparatus since the digital domain is not in the DPD loop, adjusting the digital domain gain has no effect on the DPD loop gain, and does not have adverse consequences on the operation of the DPD, thereby enabling the system to boot from the boot Stop running for no time at all times.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)

Abstract

L'invention concerne un procédé et un dispositif de commande d'étalonnage de puissance, ledit procédé comprenant les étapes qui consistent : à ajuster un gain de domaine numérique pour établir un équilibre de puissance entre des porteuses en bande de base de domaine numérique et permettre à la puissance d'ondes de bande de base combinées d'atteindre une valeur prédéfinie; à calculer une variation pour laquelle le gain de domaine analogique doit être ajusté, lorsque la puissance totale de la borne d'antenne atteint une valeur prédéfinie; à commander le gain de domaine numérique de manière à le réduire complètement de la variation; à commander le gain de domaine analogique de manière qu'il soit augmenté de la variation; et à augmenter graduellement le gain de domaine numérique jusqu'à ce que la puissance totale de la borne d'antenne atteigne une valeur prédéfinie. Puisque le domaine numérique ne se situe pas dans une boucle de distorsion préalable numérique (DPD), l'ajustement du gain de domaine numérique n'influera pas sur le gain en boucle DPD, ni n'aura d'effets négatifs sur la fonctionnement de la DPD. Ainsi, le procédé et le dispositif de commande d'étalonnage de puissance permettent de garantir l'absence de brouillage dans un système entre le démarrage et l'arrêt.
PCT/CN2011/073874 2010-12-09 2011-05-10 Procédé et dispositif de commande d'étalonnage de puissance WO2012075773A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201010581527.X 2010-12-09
CN201010581527.XA CN102014473B (zh) 2010-12-09 2010-12-09 功率校准控制方法及装置

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WO (1) WO2012075773A1 (fr)

Families Citing this family (8)

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Publication number Priority date Publication date Assignee Title
CN102014473B (zh) * 2010-12-09 2014-07-02 中兴通讯股份有限公司 功率校准控制方法及装置
WO2011157168A2 (fr) * 2011-06-03 2011-12-22 华为技术有限公司 Procédé pour transmettre un signal de fréquence radio et dispositif de station de base
CN103376403B (zh) * 2012-04-26 2016-01-27 京信通信系统（中国）有限公司 数字预失真功率放大器的可靠性测试系统
CN103906215B (zh) * 2012-12-28 2017-08-04 联芯科技有限公司 Lte终端下行链路增益的校准方法
CN106464280B (zh) * 2014-05-27 2019-02-12 瑞典爱立信有限公司 用于控制无线电传输的方法和无线电节点
CN107529215B (zh) * 2016-06-21 2021-01-08 中兴通讯股份有限公司 射频发送模块的功率控制方法及射频发送模块
CN107889204A (zh) * 2016-09-29 2018-04-06 中兴通讯股份有限公司 一种上行功率动态调整方法及装置
CN107329125B (zh) * 2017-06-01 2020-09-22 西南电子技术研究所（中国电子科技集团公司第十研究所） 消除短时突发干扰信号的自闭环校准方法

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CN101057437A (zh) * 2004-11-10 2007-10-17 电力波技术公司 在数字预失真线性化发射机中用于正向路径增益控制的系统和方法
CN101262262A (zh) * 2007-03-06 2008-09-10 日本电气株式会社 功率放大器电路及其控制方法和控制程序
CN101588196A (zh) * 2008-05-22 2009-11-25 中兴通讯股份有限公司 增益控制装置和方法
CN102014473A (zh) * 2010-12-09 2011-04-13 中兴通讯股份有限公司 功率校准控制方法及装置

Patent Citations (4)

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CN101057437A (zh) * 2004-11-10 2007-10-17 电力波技术公司 在数字预失真线性化发射机中用于正向路径增益控制的系统和方法
CN101262262A (zh) * 2007-03-06 2008-09-10 日本电气株式会社 功率放大器电路及其控制方法和控制程序
CN101588196A (zh) * 2008-05-22 2009-11-25 中兴通讯股份有限公司 增益控制装置和方法
CN102014473A (zh) * 2010-12-09 2011-04-13 中兴通讯股份有限公司 功率校准控制方法及装置

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CN102014473B (zh) 2014-07-02

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