Base station and predistortion parameter updating method thereof
A pre-distortion and base station technology, applied in the field of communication, can solve problems such as poor effect and large layout area, and achieve the effect of simple structure, small occupied area, and easy realization
Active Publication Date: 2017-05-10
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 invention provides a base station and a predistortion parameter updating method thereof. A switch switching module used for realizing communication between a diversity receiving module and at least one emission channel so as to construct a predistortion data acquisition channel on the basis of a control instruction is arranged in the base station, and the switch switching module is connected with the diversity receiving module and the at least one emission channel; and a predistoration processing module used for sending the control instruction to the switch switching module when acquisition conditions are satisfied, acquiring predistortion data based on the predistortion data acquisition channel and generating predistortion parameters based on the predistortion data is arranged, the predistortion data is signals transmitted in the at least one emission channel, and in such a way, the base station can realize closed-loop predistortion processing and has the advantages of simple structure, small occupied area, wide application scope 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