WO2012075773A1 - Power calibration control method and device - Google Patents
Power calibration control method and device Download PDFInfo
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- 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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- power
- domain gain
- gain
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Classifications
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- 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
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- 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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- Signal Processing (AREA)
- Amplifiers (AREA)
- Transmitters (AREA)
Abstract
The invention provides a power calibration control method and device, wherein the method includes the following steps: adjusting a digital domain gain to realize power balance among digital domain baseband carriers and enable the power of the baseband combined wave to achieve a designated value; calculating the variation, by which the analog domain gain needs to be adjusted, when the total power of an antenna port achieves a preset value; controlling the digital domain gain to be wholly lowered by the variation; controlling the analog domain gain to be increased by the variation; and gradually increasing the digital domain gain until the total power of the antenna port achieves the preset value. Since the digital domain is not in a Digital Predistortion (DPD) loop, the adjustment of the digital domain gain would neither influence the DPD loop gain, nor have any negative effects on the operation of the DPD; and thus, by using the power calibration control method and device, it can be realized that there is no interference in a system during the whole period from starting to shutting down.
Description
功率校准控制方法及装置 Power calibration control method and device
技术领域 Technical field
本发明涉及通信技术领域， 尤其涉及一种功率校准控制方法及装置。 The present invention relates to the field of communications technologies, and in particular, to a power calibration control method and apparatus.
背景技术 Background technique
在现代无线通信***中， 由于频谱资源非常有限， 如何抑制基站发射机 非线性失真引起的发射信号对相邻信道的功率泄漏， 进而避免邻道干扰， 提 高频谱利用率，是当前基站通信***中的关键技术之一。在码分多址（ CDMA ) 通信***中， CDMA是一种宽带调制信号， 不仅具有非常紧密的频谱分量， 还具有很高的尖峰信号 （称作波峰因子） ， 这些由于非线性失真， 来自于信 号自身频谱分量的互调产物往往会落在 CDMA频谱周围，从而落入相邻信道 的信号带内， 对其造成干扰。 同理， 其他制式的宽语信号也同样存在该问题。 中国 CDMA网络发射链路的频带一般为 870-880MHz,现已使用了 201、 242、 283 三个连续载频。 理想状态下， 三个载频之间应互不影响， 而实际情况是 随着每载频信道之间的邻道功率比 （ Adjacent Channel Power Ratio, ACPR ) 的不同， 相邻信道之间的影响程度也不同。 在三载频情况下， 尤其在 201、 242、 283 连续载频情况下， 若基站发射机的 ACPR性能较差， 242 载频 ( 877.36MHz ) 不仅受两侧相邻载频的邻道干扰， 还受互调干扰。 数学推导 证明， 等间隔通信***的互调产物随频道数的增加而迅速增加， 且落入中间 频道的互调产物最为严重， CDMA通信中的掉话、 串音、 信号时断时续实际 上都与 ACPR密切相关。 In modern wireless communication systems, due to the limited spectrum resources, how to suppress the power leakage of the transmitted signal to the adjacent channel caused by the nonlinear distortion of the base station transmitter, thereby avoiding adjacent channel interference and improving spectrum utilization, is currently in the base station communication system. One of the key technologies. In a code division multiple access (CDMA) communication system, CDMA is a wideband modulated signal that not only has very tight spectral components, but also has a very high peak signal (called a crest factor), which comes from nonlinear distortion. The intermodulation products of the spectral components of the signal tend to fall around the CDMA spectrum, thus falling within the signal band of the adjacent channel, causing interference. For the same reason, the same problem exists in other standard wide-talk signals. The frequency band of China's CDMA network transmission link is generally 870-880MHz, and three consecutive carrier frequencies of 201, 242, and 283 have been used. Ideally, the three carrier frequencies should not affect each other, and the actual situation is that the influence between adjacent channels varies with the Adjacent Channel Power Ratio (ACPR) between each carrier channel. The degree is also different. In the case of three carrier frequencies, especially in the case of continuous carrier frequencies of 201, 242, and 283, if the ACPR performance of the base station transmitter is poor, the 242 carrier frequency (877.36 MHz) is not only interfered by adjacent channels of adjacent carrier frequencies on both sides. Also interfered by intermodulation. 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.
为了提高基站发射机的 ACPR性能， 降低邻道干扰，数字预失真（Digital predistortion , DPD )技术被广泛应用于无线通信***中。 它是一种针对发射 机非线性特征（主要是指发射机中功率放大器的非线性特征） ， 对发射信号 进行反特征失真， 从而在基站天线口得到线性特征信号 （无互调产物） 的线 性化技术。 目前的通信***中都有功率校准的过程， 目的是通过校准， 在某 一时刻将天线口的功率推到***指定值。 然而， 由于功率校准过程中发射链 路增益调整对闭环预失真***的影响， 现有***的功率校准过程往往是放在
预失真功能开启之前， 那么在功率校准过程结束且预失真功能完全运行起来 之前， 基站发射机的发射信号在没有进行预失真或预失真功能正在启动的过 程中会产生非常严重的互调产物， 从而对邻道信号造成严重干扰。 虽然这种 干扰会在预失真功能开启之后被消除掉， 但是对于军用、 民航等涉及国家安 全的通信频段， 或者无线电管制较为严格的情况下， 这种短时突发的严重干 扰是不被允许的。 因此， 必须建立一种机制来保证***从开机到停止运行全 时段无干扰的安全通信。 In order to improve the ACPR performance of the base station transmitter and reduce adjacent channel interference, Digital Predistortion (DPD) technology is widely used in wireless communication systems. It is a linear characteristic of the transmitter (mainly the nonlinear characteristic of the power amplifier in the transmitter), and inversely distort the transmitted signal to obtain linearity of the linear characteristic signal (without intermodulation products) at the base station antenna port. Technology. In the current communication system, there is a process of power calibration, which aims to push the power of the antenna port to the system specified value at a certain time by calibration. However, due to the effect of transmit link gain adjustment on the closed-loop predistortion system during power calibration, the power calibration process of existing systems is often placed Before the pre-distortion function is turned on, the base station transmitter's transmit signal will produce very serious intermodulation products during the process of no pre-distortion or pre-distortion function being started before the power calibration process is completed and the pre-distortion function is fully operational. This causes severe interference to adjacent channel signals. Although this kind of interference will be eliminated after the pre-distortion function is turned on, for military, civil aviation and other communication bands involving national security, or where radio control is strict, such short-term bursts of serious interference are not allowed. of. Therefore, a mechanism must be established to ensure that the system does not interfere with secure communication for a full period of time from start-up to stop.
发明内容 Summary of the invention
为了解决上述技术问题， 本发明提供了一种功率校准控制方法及装置， 以保证***从开机到停止运行全时段无干扰。 本发明提供了一种功率校准控制方法， 该方法包括： In order to solve the above technical problem, 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:
调整数字域增益， 实现数字域基带载波间功率平衡并使基带合波功率达 到指定值； Adjusting the digital domain gain to achieve power balance between the baseband carrier in the digital domain and the baseband combining power reaches a specified value;
计算天线口总功率达到预定值时， 模拟域增益需要调整的变化量； 控制所述数字域增益整体回退所述变化量； Calculating the amount of change in the analog domain gain when the total power of the antenna port reaches a predetermined value; controlling the digital domain gain to roll back the change amount as a whole;
控制所述模拟域增益增大所述变化量； 以及 Controlling the analog domain gain to increase the amount of change;
逐步增大数字域增益， 直至天线口总功率达到所述预定值。 The digital domain gain is gradually increased until the total power of the antenna port reaches the predetermined value.
优选地， 该功率校准控制方法可具有如下特点： Preferably, the power calibration control method has the following characteristics:
所述逐步增大数字域增益， 直至天线口总功率达到所述预定值包括： 开启数字预失真（DPD )功能， 并在所述 DPD进入预失真状态后， 以设 定的频率和步进逐步增大数字域增益， 直至天线口总功率达到所述预定值。 优选地， 该功率校准控制方法还可具有如下特点： 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. Preferably, the power calibration control method further has the following features:
所述计算天线口总功率达到预定值时， 模拟域增益需要调整的变化量包 括： When the total power of the antenna port reaches a predetermined value, the amount of change required to be adjusted by the analog domain gain includes:
在天线口总功率达到预定值， 且在满足增益动态调整的范围内， 计算模 拟域增益需要调整的变化量。
优选地， 该功率校准控制方法还可具有如下特点： The total power of the antenna port reaches a predetermined value, and within the range that satisfies the dynamic adjustment of the gain, the amount of change in the analog domain gain that needs to be adjusted is calculated. Preferably, the power calibration control method further has the following features:
在所述开启 DPD功能， 并在所述 DPD进入预失真状态时， 以设定的频 率和步进逐步增大数字域增益，直至天线口总功率达到所述预定值的处理中 , 开启并运行所述 DPD功能， 建立适应大功率放大器（PA )非线性特征 的预失真表； 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);
在满足无线通信***邻道功率比（ ACPR )指标的情况下， 根据所述预失 真表的更新速度， 设置所述频率和步进。 In the case where the adjacent channel power ratio (ACPR) indicator of the wireless communication system is satisfied, the frequency and the step are set according to the update speed of the pre-disappearance table.
优选地， 该功率校准控制方法可具有如下特点： 所述天线口总功率为合 波信号经过无线收发信机下行链路数字域增益和模拟域增益两部分放大后在 天线口所达到的功率预定值。 Preferably, 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.
本发明还提供了一种功率校准控制装置， 所述装置包括： The invention also provides a power calibration control device, the device comprising:
调整模块， 设置为调整数字域增益， 实现数字域基带载波间功率平衡并 使基带合波功率达到指定值； 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;
计算模块， 设置为计算天线口总功率达到预定值时， 模拟域增益需要调 整的变化量； 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;
控制回退模块， 设置为控制所述数字域增益整体回退所述变化量； 控制增大模块， 设置为控制所述模拟域增益增大所述变化量； 以及 增大模块， 设置为逐步增大数字域增益， 直至天线口总功率达到所述预 定值。 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.
优选地， 该功率校准控制装置可具有如下特点： Preferably, the power calibration control device can have the following characteristics:
所述增大模块， 是设置为开启数字预失真（DPD )功能， 并在所述 DPD 进入预失真状态后， 以设定的频率和步进逐步增大数字域增益， 直至天线口 总功率达到所述预定值。 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.
优选地， 该功率校准控制装置还可具有如下特点： Preferably, the power calibration control device can also have the following characteristics:
所述计算模块， 是设置为在天线口总功率达到预定值， 且在满足增益动 态调整的范围内， 计算模拟域增益需要调整的变化量。 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.
优选地， 该功率校准控制装置还可具有如下特点：
所述增大模块， 是设置为开启并运行所述 DPD功能， 建立适应大功率放 大器（ PA )非线性特征的预失真表；在满足无线通信***邻道功率比（ ACPR ) 指标的情况下， 根据所述预失真表的更新速度， 设置所述频率和步进。 Preferably, the power calibration control device can also have the following characteristics: The increasing module is configured to turn on and run the DPD function to establish a predistortion table adapted to a nonlinear characteristic of a high power amplifier (PA); and to satisfy an adjacent channel power ratio (ACPR) indicator of the wireless communication system, The frequency and step are set according to the update speed of the predistortion table.
优选地， 该功率校准控制装置还可具有如下特点： 所述天线口总功率为 合载波信号经过无线收发信机下行链路数字域增益和模拟域增益两部分放大 后在天线口所达到的功率预定值。 Preferably, 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.
上述功率校准控制方法及装置， 由于数字域不在 DPD环路内， 调整数字 域增益对 DPD环路增益没有影响， 不会对 DPD的运行造成不良后果， 因而 可实现***从开机到停止运行全时段无干扰。 The above power calibration control method and device, 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 cause adverse consequences on the operation of the DPD, thereby enabling the system to be operated from start to stop for a full period of time. No interference.
附图概述 BRIEF abstract
图 2为本发明实施方式所提供的具有闭环数字预失真技术的发射机下行 模块链路架构示意图； 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;
图 3为本发明功率校准控制方法实施例的流程图； 3 is a flow chart of an embodiment of a power calibration control method of the present invention;
图 4为本发明功率校准控制装置实施例的结构示意图。 4 is a schematic structural view of an embodiment of a power calibration control device according to the present invention.
本发明的较佳实施方式 Preferred embodiment of the invention
下面结合附图和具体实施方式对本发明作进一步详细的说明。 本发明功率校准控制方法， 在调整总功率的整个过程中， 使互调失真始 终被抑制在对邻道无干扰的程度， 从而保证***从开机到停止运行全时段无 干扰。 基站发射机的非线性失***要体现在发射机中的功率放大器的非线性特 征， 其非线性可以用下列多项式描述， 此处只列举到 3次项： The present invention will be further described in detail below in conjunction with the drawings and specific embodiments. In the power calibration control method of the present invention, in the whole process of adjusting the total power, the intermodulation distortion is always suppressed to the extent that there is no interference to the adjacent channel, thereby ensuring that the system has no interference for all time from the start to the stop operation. The nonlinear distortion of the base station transmitter is mainly reflected in the nonlinear characteristics of the power amplifier in the transmitter. The nonlinearity can be described by the following polynomial, only three items are listed here:
_y = a0 + 1χ +α2χ2 +α3χ3 ( 1 )
其中， x为输入信号， y为输出信号， iQ、 α, . «2和《3为系数； 假设输入信号双音信号 （ω1<ω2)为： _y = a 0 + 1 χ +α 2 χ 2 +α 3 χ 3 ( 1 ) Where x is the input signal, y is the output signal, i Q , α, . « 2 and 3 are coefficients; assuming the input signal is a two-tone signal (ω1 < ω2):
x = A cos( t) + A cos(<2¾t) (2) 其中， A为信号幅度， t为时间 ， ω1、 ω2为双音信号的角频率, 则输出信号为 （按频率划分） ： x = A cos( t) + A cos(<23⁄4t) (2) where A is the signal amplitude, t is the time, and ω1 and ω2 are the angular frequencies of the two-tone signal, then the output signal is (divided by frequency):
DC: (α0 + 2A2) + a2A2 cos( - ω2 )t DC: (α 0 + 2 A 2 ) + a 2 A 2 cos( - ω 2 )t
3 . 9 , 3 . 9 ,
( ωΐ , ω2 ) ： — α3^ cos(2col- 2)t + ( 1A+— A )cos<¾t ( ω ΐ , ω2 ) : — α 3 ^ cos(2co l - 2 )t + ( 1 A+— A )cos<3⁄4t
9 . 3 , 9 . 3 ,
+{αλΑ+—α^Α )co 2t+— A cos(2<2¾ -<¾)t +{α λ Α+—α^Α )co 2 t+— A cos(2<23⁄4 -<3⁄4)t
( 2ω1 , 2ω2 ) ~α2^2 cos2at + a2A2 cos( 2 + a )t+-^a2A2 cos2<2¾t (3ω1, 3ω2 ) ■^a3A3 cos 3 at+^a3 A3 cos(2a + ω2)ί a3A3 cos(2 2 + a)t +-^a3 A3 cos3<2¾t 其对应的频谱如图 1所示， 其中虚线部分代表互调失真。 ( 2ω1 , 2ω2 ) ~ α 2^ 2 cos2at + a 2 A 2 cos( 2 + a )t+-^a 2 A 2 cos2<23⁄4t (3ω1, 3ω2 ) ■^a 3 A 3 cos 3 at+^a 3 A 3 cos(2a + ω 2 ) ί a 3 A 3 cos(2 2 + a)t +-^a 3 A 3 cos3<23⁄4t The corresponding spectrum is shown in Fig. 1, wherein the dotted line portion represents the intermodulation distortion.
在过滤掉无用的谐波频率分量后 （这些频率分量因为远离基频， 很容易 被滤波器滤掉） ， 就剩下基频和互调分量（互调分量与基频相隔很近， 很难 滤除， 再者需要考虑***的中心频点需要在不同信道来回切换， 因此无法通 过滤波器滤波的方法来消除） ， 其中， 基频分量为 F1: After filtering out unwanted harmonic frequency components (these frequency components are easily filtered out by the filter because they are far away from the fundamental frequency), the fundamental and intermodulation components are left (the intermodulation components are very close to the fundamental frequency, which is difficult Filtering, in addition, it is necessary to consider that the center frequency of the system needs to be switched back and forth on different channels, so it cannot be eliminated by the filter filtering method, wherein the fundamental frequency component is F1:
9 , 9 ,
F\ = alA+— A (3) 互调分量 IM3为:
F\ = a l A+— A (3) The intermodulation component IM3 is:
由式（4)可知， 互调分量 IM3的大小是由系数《3和信号幅度 决定的。 其中， 系数《3为该功率放大器的非线性特征表征系数， 为常数。 因此， 对于
同一个***而言， 互调分量 IM3的幅度大小取决于信号幅度 的大小， 信号 幅度小， 则互调分量幅度小， 反之亦然。 It can be seen from equation (4) that the size of the intermodulation component IM3 is determined by the coefficient " 3 " and the signal amplitude. Wherein, 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.
然而， 通过降低信号功率降低互调分量， 避免邻道干扰的做法是不可取 的。 因为基站的发射功率直接决定覆盖的小区半径。 为了提高***容量和减 少通信中出现的盲区， 基站往往需要保持大功率发射。 大功率发射情况下会 产生严重的互调失真， 虽然***有预失真技术来消除这些失真干扰， 但由此 也会引入在功率校准过程结束到预失真完全运行之前所出现的短时突发的严 重干扰问题。 However, it is not advisable to reduce the intermodulation component by reducing the signal power and avoid adjacent channel interference. Because the transmit power of the base station directly determines the radius of the covered cell. In order to increase system capacity and reduce blind spots in communications, base stations often need to maintain high power emissions. In the case of high-power transmission, severe intermodulation distortion will occur. Although the system has pre-distortion technology to eliminate these distortion interferences, it will also introduce short-term bursts that occur before the end of the power calibration process until the pre-distortion is fully operational. Serious interference problems.
如图 2所示， 为本发明具有闭环数字预失真技术的发射机下行模块链路 架构示意图， （^― 。,为下行链路中数字增益调节部分（每个载波通道增益可 调）， ^―。∞1。g为下行链路中模拟增益调节部分（合波增益调整）， GC 反馈链路模拟增益调节部分（合波增益调整） 。 其中， —。∞1。g和^ ^。8组 成了 DPD 环路增益调节的两个部分。 As shown in 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). Where – — ∞1 . g and ^ ^. 8 The two parts of the DPD loop gain adjustment are formed.
在传统的功率校准过程中， 通常先调整数字域增益 Χ £½ω , 目的是补偿 各个载波在发生链路上的增益差值， 以实现基带载波间功率平衡并使基带合 波功率达到指定值， 而后再调整模拟域增益 X fl∞1。g , 使天线口总功率达到系 统指定功率。 在调整 (^―。∞ 增大总功率时， 随着信号功率的增大， PA输出 的互调失真也随着增大。 In the conventional power calibration process, the digital domain gain Χ £1⁄2ω 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. When adjusting (^―. ∞ to increase the total power, as the signal power increases, the intermodulation distortion of the PA output also increases.
本发明提出了一种功率校准控制方法， 所述方法包括： The invention provides a power calibration control method, the method comprising:
步骤一、 调整数字域增益， 实现数字域基带载波间功率平衡并使基带合 波功率达到指定值； 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;
步骤二、 计算天线口总功率达到预定值时， 模拟域增益需要调整的变化 量； Step 2: When calculating the total power of the antenna port to reach a predetermined value, the analog domain gain needs to be adjusted.
其中， 天线口总功率为合载波信号经过无线收发信机下行链路数字域增
益和模拟域增益两部分放大后在天线口所达到的功率预定值； Wherein, 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;
步骤三、 控制所述数字域增益整体回退所述变化量； Step 3: Control the digital domain gain to roll back the change amount as a whole;
步骤四、 控制所述模拟域增益增大所述变化量； 以及 Step four, controlling the analog domain gain to increase the amount of change;
步骤五、 逐步增大数字域增益， 直至天线口总功率达到所述预定值。 该步骤可通过开启数字预失真（DPD )功能， 并在所述 DPD进入预失真 状态时， 以设定的频率和步进逐步增大数字域增益来实现。 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.
如图 3所示， 为本发明功率校准控制方法实施例的流程图， 该功率校准 控制方法包括： As shown in FIG. 3, it is a flowchart of an embodiment of a power calibration control method according to the present invention. The power calibration control method includes:
步骤 301、当***功率校准开始后，先调整数字域增益 x 即 χ d.g ), 实现基带载波间功率平衡并使基带合波功率达到指定值； Step 301: After the system power calibration starts, first adjust the digital domain gain x , that is, χ d . g ), to achieve power balance between the baseband carriers and to achieve a baseband combining power to a specified value;
该步骤只调整数字域增益， 模拟域增益暂时不调， 以保证***使用小信 号补偿各个载波发生在链路上的增益差值，天线口不会产生过大的互调失真； 步骤 302、 计算天线口总功率达到指定值时， GTX (即 ^―。„。）需要 增大的变化量； In this step, only the digital domain gain is adjusted, and the analog domain gain is temporarily not adjusted, so as to ensure that the system uses small signals to compensate the gain difference of each carrier on the link, and the antenna port does not generate excessive intermodulation distortion; Step 302, calculation When the total power of the antenna port reaches the specified value, G TX (ie ^..) requires an increased amount of change;
通过计算得出模拟域增益进行总功率校准时 (^― fl∞1。g需要调整的变化量Calculate the analog domain gain for total power calibration (^- fl∞1 . g need to adjust the amount of change
△k; △k;
该 值必须在增益动态调整范围内以及满足功率检测的动态范围； 步骤 303、 根据该 Ak值， 将数字域增益 。,整体回退 Ak; The value must be within the gain dynamic adjustment range and the dynamic range of the power detection is satisfied; Step 303, according to the Ak value, the digital domain gain. , the overall retreat Ak;
即合波增益回退 Ak; That is, the combined gain gain is back Ak;
步骤 304、 将模拟域增益 ( 。∞1。g按照 Ak的变化量进行调整即将 ( 。∞1。g 增大 Ak; Step 304, the gain in the analog domain (∞1 g Ak adjusted according to the amount of change is about (∞1 g increases Ak....;
上述做法实质是在总功率校准之前，将数字域的增益 Ak转移到模拟域的 增益上来， 下行链路总增益并没有提高， 这时天线口的总功率还保持在基带 载波间功率平衡调整结束总功率校准之前的低功率水平，互调失真影响较小；
步骤 305、 开启 DPD; The above practice essentially transfers the gain of the digital domain to the gain of the analog domain before the total power calibration, and the total downlink gain does not increase. At this time, the total power of the antenna port remains at the end of the power balance adjustment between the baseband carriers. Low power level before total power calibration, the effect of intermodulation distortion is small; Step 305: Turn on the DPD.
在低功率情况下运行 DPD, 建立适应大功率放大器（PA )非线性特征的 预失真表， 将互调失真抑制到最小程度； Run DPD at low power to establish a predistortion table that adapts to the nonlinear characteristics of high power amplifiers (PA) to minimize intermodulation distortion;
步骤 306、 判断 DPD是否进入预失真状态， 若是执行步骤 307, 否则， 等待， 并转向步骤 306; 步骤 307、 以一定的频率和步进逐步恢复数字域增益 ； 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;
步骤 308、天线口总功率是否达到指定值，若是结束，否则转向步骤 307。 根据 DPD算法预失真表的更新速度及互调失真的抑制程度，以满足无线 通信*** ACPR指标为前提， 来设定具体调整的频率和步进， 最终使天线口 功率达到指定值。 Step 308: Whether the total power of the antenna port reaches a specified value, and if yes, otherwise proceeds to step 307. According to the update speed of the DPD algorithm predistortion table and the degree of suppression of intermodulation distortion, the frequency and step of the specific adjustment are set on the premise of satisfying the ACPR indicator of the wireless communication system, and finally the antenna port power reaches a specified value.
上述功率校准控制方法， 固定模拟域增益， 在 DPD开启的情况下调整数 字域增益进行功率校准， 以达到校准功率的同时抑制互调失真的目的。 但如 果先固定数字域增益， 在 DPD开启的情况下调整模拟域增益进行功率校准， 使用该方法的前提是***的预失真功能对预失真环路增益的变化没有要求或 要求较宽， 即不会因为调整 Gn。"fll。g使环路增益突变导致 DPD功能失效。 然 而， 目前业界流行的数字预失真技术几乎都是基于查找表的闭环预失真***， 闭环***需要环路增益稳定在一定范围内为前提才能正常工作， 因此， 固定 数字域增益调整模拟域增益的方法并不具有普遍性和可实现性。 本发明所描 述的功率校准控制方法，因为， ^ϋ^'不在 DPD环路内，调整 ^ϋ^'对 DPD 环路增益没有影响， 不会对 DPD的运行造成不良后果， 因此该方法具有普遍 性和可实现性。 如图 4所示， 为本发明功率校准控制装置实施例的结构示意图， 该装置 包括： 调整模块 41、 计算模块 42、 控制回退模块 43、 控制增大模块 44和增 大模块 45; 其中， 调整模块设置为调整数字域增益， 实现数字域基带载波间 功率平衡并使基带合波功率达到指定值； 计算模块设置为计算天线口总功率
达到预定值时， 模拟域增益需要调整的变化量； 控制回退模块设置为控制所 述数字域增益整体回退所述变化量； 控制增大模块设置为控制所述模拟域增 益增大所述变化量； 增大模块设置为逐步增大数字域增益， 直至天线口总功 率达到所述预定值。 The above power calibration control method has a fixed analog domain gain, and adjusts the digital domain gain for power calibration when the DPD is turned on, so as to achieve the purpose of calibrating power while suppressing intermodulation distortion. However, if the digital domain gain is fixed first, and the analog domain gain is adjusted for power calibration when the DPD is turned on, the premise of using the method is that the predistortion function of the system does not require or require a wide change in the predistortion loop gain, that is, Will be because of the adjustment of G n. " fll .g causes the loop gain to be abrupt and causes the DPD function to fail. However, the current digital predistortion technology is almost always a closed-loop pre-distortion system based on a look-up table. 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 ^ϋ^' 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. As shown in FIG. 4, it is a schematic structural diagram of an embodiment of the power calibration control device of the present invention. The device includes: an adjustment module 41, a calculation module 42, a control fallback module 43, a control increase module 44, and an increase module 45; wherein the adjustment module is configured to adjust the digital domain gain to achieve power balance between the digital domain baseband carriers and The baseband combining power reaches the specified value; the calculation module is set to calculate the total power of the antenna port When the predetermined value is reached, the analog domain gain needs to be adjusted by the amount of change; the control fallback module is configured to control the digital domain gain to collectively roll back the amount of change; and the control increase module is configured to control the analog domain gain to increase The amount of change; the increase module is set to gradually increase the digital domain gain until the total power of the antenna port reaches the predetermined value.
优选地， 所述增大模块可以是设置为开启数字预失真（DPD )功能， 并 在所述 DPD进入预失真状态后， 以设定的频率和步进逐步增大数字域增益， 直至天线口总功率达到所述预定值。 具体地， 所述增大模块还可以是设置为 开启并运行所述 DPD功能， 建立适应大功率放大器（PA )非线性特征的预 失真表； 在满足无线通信***邻道功率比（ACPR )指标的情况下， 根据所述 预失真表的更新速度， 设置所述频率和步进。 Preferably, 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. Specifically, 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. In the case, the frequency and the step are set according to the update speed of the predistortion table.
其中， 所述计算模块可以是设置为在天线口总功率达到预定值时， 且在 满足功率检测的动态范围内以及增益动态调整的范围内， 计算模拟域增益需 要调整的变化量。 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.
另外， 所述天线口总功率为合载波信号经过无线收发信机下行链路数字 域增益和模拟域增益两部分放大后在天线口所达到的功率预定值。 In addition, 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.
该功率校准控制装置可实现***从开机到停止运行全时段无干扰， 具体 实现方法与上述功率校准控制方法实施例相同， 在此不赘述。 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.
该功率校准控制装置通过调整模块、 计算模块、 控制回退模块、 控制增 大模块和增大模块之间的交互，实现了***从开机到停止运行全时段无干扰。 The power calibration control device realizes the system without interference from the startup to the stop operation through the adjustment module, the calculation module, the control back-off module, the control amplification module, and the interaction between the modules.
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成， 上述程序可以存储于计算机可读存储介质中， 如只读 存储器、 磁盘或光盘等。 可选地， 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现。 相应地， 上述实施例中的各模块 /单元可以釆用 硬件的形式实现， 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。 One of ordinary skill in the art will appreciate that all or a portion of the above steps may be accomplished by a program that instructs the associated hardware to be stored in a computer readable storage medium, such as a read only memory, a magnetic disk, or an optical disk. Alternatively, all or part of the steps of the above embodiments may also be implemented using one or more integrated circuits. Correspondingly, each module/unit in the above embodiment may be implemented in the form of hardware or in the form of a software function module. The invention is not limited to any specific form of combination of hardware and software.
以上实施例仅用以说明本发明的技术方案而非限制， 仅仅参照较佳实施 例对本发明进行了详细说明。 本领域的普通技术人员应当理解， 可以对本发 明的技术方案进行修改或者等同替换， 而不脱离本发明技术方案的精神和范
围， 均应涵盖在本发明的权利要求范围当中。 The above embodiments are only intended to illustrate the technical solutions of the present invention and are not to be construed as limiting the invention. It should be understood by those skilled in the art that modifications or equivalents may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention. It is intended to be included within the scope of the appended claims.
工业实用性 提供了一种功率校准控制方法及装置， 通过调整数字域增益， 实现数字 域基带载波间功率平衡并使基带合波功率达到指定值； 计算天线口总功率达 到预定值时， 模拟域增益需要调整的变化量； 控制所述数字域增益整体回退 所述变化量； 控制所述模拟域增益增大所述变化量； 以及逐步增大数字域增 益， 直至天线口总功率达到所述预定值， 来保证***从开机到停止运行全时 段无干扰。 本发明所提供的功率校准控制方法及装置， 由于数字域不在 DPD 环路内， 调整数字域增益对 DPD环路增益没有影响， 不会对 DPD的运行造 成不良后果， 因而可实现***从开机到停止运行全时段无干扰。
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 provided by the present invention, 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.
Claims
1、 一种功率校准控制方法， 包括： 1. A power calibration control method, comprising:
调整数字域增益， 实现数字域基带载波间功率平衡并使基带合波功率达 到指定值； Adjusting the digital domain gain to achieve power balance between the baseband carrier in the digital domain and the baseband combining power reaches a specified value;
计算天线口总功率达到预定值时， 模拟域增益需要调整的变化量； 控制所述数字域增益整体回退所述变化量； Calculating the amount of change in the analog domain gain when the total power of the antenna port reaches a predetermined value; controlling the digital domain gain to roll back the change amount as a whole;
控制所述模拟域增益增大所述变化量； 以及 Controlling the analog domain gain to increase the amount of change;
逐步增大所述数字域增益， 直至所述天线口总功率达到所述预定值。 The digital domain gain is gradually increased until the total power of the antenna port reaches the predetermined value.
2、 根据权利要求 1所述的功率校准控制方法， 其中， 所述逐步增大所述 数字域增益， 直至所述天线口总功率达到所述预定值的步骤包括： 2. The power calibration control method according to claim 1, wherein the step of gradually increasing the digital domain gain until the total power of the antenna port reaches the predetermined value comprises:
开启数字预失真（DPD )功能， 并在所述 DPD进入预失真状态后， 以设 定的频率和步进逐步增大所述数字域增益， 直至所述天线口总功率达到所述 预定值。 The digital predistortion (DPD) function is turned on, and after the DPD enters the predistortion 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.
3、 根据权利要求 1所述的功率校准控制方法， 其中， 所述计算天线口总 功率达到预定值时， 模拟域增益需要调整的变化量的步骤包括： 3. The power calibration control method according to claim 1, wherein, when the calculating the total power of the antenna port reaches a predetermined value, the step of the analog domain gain requiring the adjusted amount of change comprises:
在所述天线口总功率达到预定值， 且在满足增益动态调整的范围内时， 计算所述模拟域增益需要调整的变化量。 When the total power of the antenna port reaches a predetermined value, and within a range in which the gain dynamic adjustment is satisfied, the amount of change in the analog domain gain that needs to be adjusted is calculated.
4、 根据权利要求 2所述的功率校准控制方法， 其中， 所述开启 DPD功 能， 并在所述 DPD进入预失真状态时， 以设定的频率和步进逐步增大所述数 字域增益， 直至所述天线口总功率达到所述预定值的步骤包括： 4. The power calibration control method according to claim 2, wherein the DPD function is turned on, and when the DPD enters a predistortion state, the digital domain gain is gradually increased at a set frequency and step. The step until the total power of the antenna port reaches the predetermined value includes:
开启并运行所述 DPD功能， 建立适应大功率放大器（PA )非线性特征 的预失真表； Turning on and running the DPD function to establish a predistortion table that adapts to the nonlinear characteristics of the high power amplifier (PA);
在满足无线通信***邻道功率比（ ACPR )指标的情况下， 根据所述预失 真表的更新速度， 设置所述频率和步进。 In the case where the adjacent channel power ratio (ACPR) indicator of the wireless communication system is satisfied, the frequency and the step are set according to the update speed of the pre-disappearance table.
5、根据权利要求 1-4中任一项权利要求所述的功率校准控制方法，其中， 所述天线口总功率为合波信号经过无线收发信机下行链路数字域增益和模拟 域增益两部分放大后在天线口所达到的功率预定值。 The power calibration control method according to any one of claims 1 to 4, wherein the total power of the antenna port is a downlink signal digital domain gain and an analog domain gain of the multiplexed signal through the wireless transceiver. The predetermined value of the power reached at the antenna port after partial amplification.
6、 一种功率校准控制装置， 包括： 6. A power calibration control device comprising:
调整模块， 其设置成调整数字域增益， 实现数字域基带载波间功率平衡 并使基带合波功率达到指定值； An adjustment module configured to adjust a digital domain gain to achieve power balance between baseband carriers in the digital domain and to achieve a baseband combining power to a specified value;
计算模块， 其设置成计算天线口总功率达到预定值时， 模拟域增益需要 调整的变化量； a calculation module configured to calculate an amount of change in the analog domain gain that needs to be adjusted when the total power of the antenna port reaches a predetermined value;
控制回退模块， 其设置成控制所述数字域增益整体回退所述变化量； 控制增大模块， 其设置成控制所述模拟域增益增大所述变化量； 以及 增大模块， 其设置成逐步增大所述数字域增益， 直至所述天线口总功率 达到所述预定值。 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 a module, the setting thereof The digital domain gain is gradually increased until the total power of the antenna port reaches the predetermined value.
7、 根据权利要求 6所述的功率校准控制装置， 其中： 7. The power calibration control device according to claim 6, wherein:
所述增大模块是设置成： 开启数字预失真（DPD )功能， 并在所述 DPD 进入预失真状态后， 以设定的频率和步进逐步增大所述数字域增益， 直至所 述天线口总功率达到所述预定值。 The increasing module is configured to: turn on 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 The total port power reaches the predetermined value.
8、 根据权利要求 6所述的功率校准控制装置， 其中： 8. The power calibration control device according to claim 6, wherein:
所述计算模块是设置成： 在所述天线口总功率达到预定值， 且在满足增 益动态调整的范围内时， 计算所述模拟域增益需要调整的变化量。 The calculating module is configured to: when the total power of the antenna port reaches a predetermined value, and within a range that satisfies the gain dynamic adjustment, calculate a variation amount that the analog domain gain needs to be adjusted.
9、 根据权利要求 7所述的功率校准控制装置， 其中： 9. The power calibration control device according to claim 7, wherein:
所述增大模块是设置成： 开启并运行所述 DPD功能， 建立适应大功率放 大器（ PA )非线性特征的预失真表；在满足无线通信***邻道功率比（ ACPR ) 指标的情况下， 根据所述预失真表的更新速度， 设置所述频率和步进。 The increasing module is configured to: turn on and run the DPD function, and establish a predistortion table adapted to a nonlinear characteristic of a high power amplifier (PA); and satisfy an adjacent channel power ratio (ACPR) indicator of the wireless communication system, The frequency and step are set according to the update speed of the predistortion table.
10、 根据权利要求 6-9 中任一项权利要求所述的功率校准控制装置， 其 中， 所述天线口总功率为合载波信号经过无线收发信机下行链路数字域增益 和模拟域增益两部分放大后在天线口所达到的功率预定值。 The power calibration control device according to any one of claims 6-9, wherein the total power of the antenna port is a combined carrier signal and a downlink digital domain gain and an analog domain gain through the wireless transceiver. The predetermined value of the power reached at the antenna port after partial amplification.
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| CN102014473B (en) * | 2010-12-09 | 2014-07-02 | 中兴通讯股份有限公司 | Power calibration control method and device |
| WO2011157168A2 (en) * | 2011-06-03 | 2011-12-22 | 华为技术有限公司 | Method for transmitting radio frequency signal and base station device |
| CN103376403B (en) * | 2012-04-26 | 2016-01-27 | 京信通信***（中国）有限公司 | The reliability test system of digital pre-distorting power amplifier |
| CN103906215B (en) * | 2012-12-28 | 2017-08-04 | 联芯科技有限公司 | The calibration method of LTE terminal downlink gain |
| CN106464280B (en) * | 2014-05-27 | 2019-02-12 | 瑞典爱立信有限公司 | For controlling the method and radio node of wireless radio transmission |
| CN107529215B (en) * | 2016-06-21 | 2021-01-08 | 中兴通讯股份有限公司 | Power control method of radio frequency transmission module and radio frequency transmission module |
| CN107889204A (en) * | 2016-09-29 | 2018-04-06 | 中兴通讯股份有限公司 | A kind of ascending power dynamic adjusting method and device |
| CN107329125B (en) * | 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） | Self-closing loop calibration method for eliminating short-time burst interference signal |
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