Wideband digital predistortion power amplifier temperature compensation method and system
A technology of digital predistortion and temperature compensation, applied in the field of temperature compensation of broadband digital predistortion power amplifier, can solve problems such as drift, achieve the effect of improving stability, reducing device cost, and overcoming the effect of temperature drift
Active Publication Date: 2010-11-10
WUHAN HONGXIN TELECOMM TECH CO LTD
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Problems solved by technology
The purpose of the present invention is to solve the technical problem of the drift caused by the change of ambient temperature in the wideband digital predistortion power amplifier. The present invention starts from the wideband power amplifier model itself, adopts least squares estimation and orthogonal polynomial fitting method, Establish a temperature model of a wideband power amplifier, and provide a temperature compensation method and system for a wideband digital predistortion power amplifier
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The invention provides a wideband digital predistortion power amplifier temperature compensation method and system based on environmental temperature detection and building up a wideband power amplifiThe invention provides a wideband digital predistortion power amplifier temperature compensation method and system based on environmental temperature detection and building up a wideband power amplifiigital predistortion power amplifier is realized. The wideband digital predistortion power amplifier temperature compensation method based on environmental temperature detection and building up a wi digital predistortion power amplifier is realized. The wideband digital predistortion power amplifier temperature compensation method based on environmental temperature detection and building up a wideband power amplifier temperature compensation model can compensate the wideband digital predistortion power amplifier temperature drift in real time.deband power amplifier temperature compensation model can compensate the wideband digital predistortion power amplifier temperature drift in real time.er temperature compensation model. Base on the wideband power amplifier model, the method includes the steps of designedly changing the working environmental temperature of a wideband power amplifier,er temperature compensation model. Base on the wideband power amplifier model, the method includes the steps of designedly changing the working environmental temperature of a wideband power amplifier, adopting a least-squares estimation and orthogonal polynomial fitting method to identify the temperature model of the wideband power amplifier, then adopting an indirect learning structure to build uadopting a least-squares estimation and orthogonal polynomial fitting method to identify the temperature model of the wideband power amplifier, then adopting an indirect learning structure to build up the temperature model of a digital predistorter, finally detecting the environmental temperature in real time through a digital temperature sensor, calculating the corresponding temperature value anp the temperature model of a digital predistorter, finally detecting the environmental temperature in real time through a digital temperature sensor, calculating the corresponding temperature value and calculating the coefficient value of the temperature model of the digital predistorter in real time according to the temperature value, thereby the real-time temperature compensation of the widebandd calculating the coefficient value of the temperature model of the digital predistorter in real time according to the temperature value, thereby the real-time temperature compensation of the widebandd
Description
A temperature compensation method and system for a wideband digital predistortion power amplifier technical field The invention relates to the technical field of digital predistortion power amplifiers, in particular to a temperature compensation method and system for wideband digital predistortion power amplifiers. Background technique In order to meet the trend of miniaturization and environmental protection of base station equipment in the next generation mobile communication system (4th generation mobile communication, namely 4G), it is necessary to improve the linearity and efficiency of the broadband power amplifier. However, in view of the high peak-to-average power ratio (Peak-to-AveragePowerRatio, PAPR) problem of Orthogonal Frequency Division Multiplexing (OFDM) technology adopted in the next generation mobile communication system, how to improve the linearity of the power amplifier To a certain extent, many power amplifier linearization techniques have been propo...
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IPC IPC(8): G05B17/02H04L25/49H03F1/34G05D23/19
Inventor 王建新陈朝阳余建国
Owner WUHAN HONGXIN TELECOMM TECH CO LTD