Broadband multi-band power amplification method and device
A power amplification and multi-band technology, applied in the field of communication, can solve the problems of complex implementation and low efficiency, and achieve the effects of accurate power, simple power amplification process, and accurate digital pre-distortion processing
Active Publication Date: 2017-07-07
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 present invention provides a broadband multi-band power amplification method and device. After receiving the input signal, the working frequency band information and the baseband signal of the input signal are obtained, and then the rate of the baseband data in the baseband signal of the input signal is analyzed to amplify the output of the power amplifier. The signal is fed back to obtain a signal with the same rate as the baseband data rate, and the signal with the same rate as the baseband data rate is used as a reference signal for digital predistortion processing, and the baseband signal is amplified and output after digital predistortion processing. The entire power amplification process is simple, and can automatically obtain the working frequency band information of the input signal, allowing the power amplification of multiple frequency bands to be realized through one link, that is, it will not choose expensive high-sampling rate ADC / DAC devices due to the increase in frequency bands , no need to add corresponding hardware links, no need to manually change the working frequency band of the power amplifier system, the system can adaptively switch the working frequency band according to the frequency of the input signal.
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