A device and method for eliminating harmonics of ultra-wideband power amplifier based on fpga
A harmonic elimination and ultra-broadband technology, applied in the field of ultra-broadband communication, can solve the problems of high system power consumption and waste of hardware resources, and achieve the effects of improving computing speed, eliminating delay, and eliminating harmonic interference signals.
Active Publication Date: 2022-03-08
INST OF MICROELECTRONICS CHINESE ACAD OF SCI
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[0004] In view of the above analysis, the embodiment of the present invention aims to provide an FPGA-based ultra-wideband power amplifier harmonic elimination device and method to solve the waste of hardware resources and system performance caused by the existing harmonic elimination method only using FPGA to collect data. high consumption etc.
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[0057] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings, wherein the accompanying drawings constitute a part of the application and together with the embodiments of the present invention are used to explain the principle of the present invention and are not intended to limit the scope of the present invention.
[0058] The existing digital harmonic elimination device only relies on the FPGA to collect the data of the analog-to-digital conversion module and the digital-to-analog conversion module to complete the floating-point simulation of the algorithm. Secondly, it generates anti-harmonic signals by adding other modules to eliminate the carrier signal passing through the power amplifier. The harmonic interference signal generated after the module, this method causes a waste of hardware resources, increases the power consumption of the system, and the efficiency of harmonic elimination is low. For th...
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The invention relates to an FPGA-based ultra-wideband power amplifier harmonic elimination device and method, belonging to the technical field of ultra-wideband communication, and solves the problems of waste of hardware resources and large system power consumption caused by the existing method of only using FPGA to collect data. The harmonic elimination device is implemented by the FPGA module, including a training signal unit for generating an initial harmonic signal; a power amplifier harmonic modeling unit for building a nonlinear channel of the radio frequency power amplifier harmonic frequency according to the harmonic signal and the baseband signal mode, to obtain channel parameters, wherein the harmonic signal includes the initial harmonic signal and the harmonic interference signal obtained from the power amplifier module; the anti-harmonic coefficient calculation unit is used to calculate and obtain according to the harmonic signal, baseband signal and channel parameters The anti-harmonic coefficient; the anti-harmonic generating unit, configured to generate an anti-harmonic signal according to the anti-harmonic coefficient, so as to eliminate the harmonic interference signal generated by the radio frequency power amplifier. The hardware resources are saved, and the power consumption of the harmonic elimination device is reduced.
Description
technical field [0001] The invention relates to the technical field of ultra-wideband communication, in particular to an FPGA-based ultra-wideband power amplifier harmonic elimination device and method. Background technique [0002] The radio frequency power amplifier is an important part of the transmitting end of the wireless communication system, and it is the device that consumes the most power in the transmitting link. In order to improve the efficiency of the RF power amplifier and the signal-to-noise ratio of the receiver, the RF power amplifier is usually driven to the nonlinear region, but this will bring in-band intermodulation interference and out-of-band harmonic interference, resulting in spectrum pollution and signal distortion. Communication system performance deteriorates. [0003] For the signal distortion caused by in-band intermodulation, digital predistortion technology is usually used to compensate. This technology has been researched and applied on a l...
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IPC IPC(8): H04B17/345H04B17/391H04B1/04
CPCH04B17/345H04B17/391H04B1/0475
Inventor 杨晶晶柴旭荣荆有波蒯冲
Owner INST OF MICROELECTRONICS CHINESE ACAD OF SCI