A base station and its method for updating predistortion parameters
A pre-distortion and parameter technology, applied in the field of communication, can solve the problems of large layout area and poor effect, and achieve the effect of small occupied area, simple structure and wide application range
Active Publication Date: 2021-02-02
ZTE CORP
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Problems solved by technology
However, the layout area occupied by the dedicated RF channel and digital signal processor required by the closed-loop pre-distortion in the existing technology is too large, and the traditional open-loop pre-distortion is not effective in improving the efficiency of the power amplifier.
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[0046] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the following will clearly and completely describe the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention. Apparently, the described embodiments are some, not all, embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the described embodiments of the present invention belong to the protection scope of the present invention.
[0047] Unless otherwise defined, the technical terms or scientific terms used herein shall have the usual meanings understood by those skilled in the art to which the present invention belongs. "First", "second" and similar words used in the patent application specification and claims of the present invention do not indicate any order, quantity or importance, but are only used to distinguis...
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The present invention provides a base station and its pre-distortion parameter update method, by setting a switch switching module in the base station for realizing the connection between the diversity receiving module and the at least one transmission channel based on control instructions to construct a pre-distortion data acquisition channel , the switch switching module is respectively connected to the diversity receiving module and the at least one transmission channel; used to send the control instruction to the switch switching module when the acquisition condition is met, and collect the predistortion data based on the The channel collects pre-distortion data, and generates a pre-distortion processing module for pre-distortion parameters based on the pre-distortion data, the pre-distortion data is a signal transmitted in the at least one transmission channel, so that the base station can implement closed-loop pre-distortion processing, It has the characteristics of simple structure, small occupation area, wide application range and easy realization.
Description
technical field [0001] The invention relates to the technical field of communication, in particular to a base station and a method for updating predistortion parameters thereof. Background technique [0002] In mobile communication base stations, the combination of peak clipping technology and digital predistortion linearization technology is generally used to improve the efficiency and linearity index of the power amplifier. The peak clipping technology only needs to be implemented by algorithms in the digital logic part, while the digital pre-distortion technology requires a dedicated power amplifier distortion signal detection channel and a pre-distortion processing chip on the hardware. The power amplifier distortion signal detection channel is mainly composed of a coupler, a mixer, a filter, an amplifier and an analog-to-digital conversion (AD) chip; the pre-distortion processing chip is generally in the form of a digital signal processing chip (DSP) or an application-s...
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IPC IPC(8): H04W24/02H04W88/08
CPCH04W24/02H04W88/08H04L25/49
Inventor 陈豪王国强林洁赵大千
Owner ZTE CORP