Broadband multi-frequency power amplification method and device
A power amplification, multi-band technology, applied in the field of communications, can solve problems such as low efficiency and complex implementation, and achieve the effects of simple power amplification process, accurate power, and accurate digital predistortion processing.
Active Publication Date: 2014-12-03
COMBA TELECOM SYST CHINA LTD
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[0005] Based on this, it is necessary to provide a simple, high-efficiency and low-cost broadband multi-band power amplification method and device for the existing broadband multi-band power amplification methods that are complex and inefficient.
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[0020] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below according to the drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0021] For the convenience of explanation, in the following description of the scheme of the broadband multi-band power amplification method of the present invention, a specific embodiment will be used for illustration. It should be noted that this specific embodiment is only one of the broadband multi-band power amplification methods of the present invention. The specific embodiments are only limited to explaining the technical principle of the whole solution and the effects brought about by it, and are not intended as limitations.
[0022] It is assumed that the input signal is a broadband multi-band LTE signal, and...
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The invention provides a broadband multi-frequency power amplification method and device. The method includes after receiving input signals, acquiring working frequency information and baseband signals of the input signals, analyzing the speed of the baseband data of the baseband signals of the input signals, feeding back signals amplified and output by a power amplifier, acquiring signals as same as the baseband data in speed, adopting the signals as same as the baseband data in speed as reference signals for digital predistortion processing, and amplifying and outputting the baseband signals after the digital predistortion processing. The entire power amplifying process is simple, the working frequency information of the input signals can be acquired automatically, power amplification of multiple frequencies can be implemented through one link, an expensive ADC / DAC device, selected due to the frequency increase, with high sampling rate is omitted, and a system is capable of switching working frequency in an adaptive manner according to the frequency of the input signals.
Description
technical field [0001] The invention relates to the field of communication technology, in particular to a broadband multi-band power amplification method and device. Background technique [0002] In communication systems, radio frequency power amplifiers are used to amplify complex modulation signals. In order to improve spectrum utilization efficiency, broadband multi-band and high-order modulation methods are applied. Such signals need to be amplified by linear amplifiers. In order to improve the efficiency of linear amplifiers, Usually, high-efficiency power amplifier technology is used, and DPD (Digital Predistortion, digital pre-distortion) technology is used for distortion correction. [0003] At present, the RF power amplifiers in the mobile communication industry generally only meet the needs of single-frequency communication. For signals with multiple broadband bands and different modulation methods, multiple power amplifiers are used to realize the long-distance co...
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IPC IPC(8): H03F3/20H03F1/42
Inventor 刘江涛张占胜谢路平林锡贵刘志兵凌兴锋徐辉蒋伯川谷俊锋
Owner COMBA TELECOM SYST CHINA LTD