Method for obtaining digital predistortion calibration value and terminal equipment
A technology of digital pre-distortion and terminal equipment, applied in branch office equipment, electrical components, telephone communication, etc., can solve the problems of unable to effectively improve the factory efficiency of qualified mobile phones, slow calibration process, and occupying equipment, so as to reduce occupation and improve calibration Efficiency, the effect of speeding up the process
Active Publication Date: 2019-04-26
LENOVO (BEIJING) LTD
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Problems solved by technology
[0003] Mobile communication products such as mobile phones need digital predistortion (DPD) calibration before leaving the factory, and existing mobile communication products such as mobile phones are applied to Enhanced Data Rate GSM Evolution (EDGE) or Enhanced Power Tracking ( EPT), the calibration process is very slow and takes up a lot of equipment, especially the comprehensive tester, so that the factory efficiency of qualified mobile phones cannot be effectively improved
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[0010] Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. Note that in this specification and the drawings, substantially the same steps and elements are denoted by the same reference numerals, and repeated explanation of these steps and elements will be omitted.
[0011] Below, refer to figure 1 The working state switching method of the embodiment of the present invention is described. figure 1 is a flow chart describing a method 100 for obtaining a calibration value of DPD calibration from calibration according to an embodiment of the present invention. The method 100 for obtaining a calibration value of DPD calibration from calibration can be applied to a terminal device, especially a mobile communication terminal device. In the embodiment according to the present invention, the specific form of the terminal device may include, but not limited to, a mobile phone, a wearable communication dev...
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Embodiments according to the present invention provide a method and terminal equipment for obtaining calibration values of DPD calibration through self-calibration. The method includes inputting an input signal of a first calibration frequency band among a plurality of calibration frequency bands to a terminal device; setting parameters related to the output of a transmit signal power amplifier so that an output signal generated by the transmit signal power amplifier in response to the input signal enters a nonlinear region. ; Receive the first power value measured by the measurement device connected to the terminal device; measure the feedback signal obtained according to the output signal through the feedback radio frequency receiving unit to obtain the second power value; calculate the first power value and the The difference between the second power values is used as the calibration value for DPD calibration in the first calibration frequency band.
Description
technical field [0001] The present invention relates to a method for obtaining a calibration value of digital predistortion (DPD) calibration and a terminal device, more specifically, the present invention relates to a method for obtaining a calibration value of digital predistortion (DPD) calibration through a self-calibration method and Terminal Equipment. Background technique [0002] With the further development of mobile communication technology, mobile communication products such as mobile phones are rapidly popularized and widely used, which makes it more convenient for people to communicate with each other and meets the needs of people to make calls anytime and anywhere. Therefore, the call quality of mobile communication products such as mobile phones is guaranteed appears to be particularly important. [0003] Mobile communication products such as mobile phones need digital predistortion (DPD) calibration before leaving the factory, and existing mobile communicati...
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IPC IPC(8): H04W24/02H04M1/24
Inventor 霍彬
Owner LENOVO (BEIJING) LTD