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Correction table generation method and device for radio frequency emission system

A technology of radio frequency transmission and generation device, applied in the field of communication, can solve problems such as cost reduction

Active Publication Date: 2019-10-22
BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The technical problem solved by the present invention is to reduce the complexity of the pre-distortion used in the radio frequency transmission system, and reduce the cost

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  • Correction table generation method and device for radio frequency emission system
  • Correction table generation method and device for radio frequency emission system
  • Correction table generation method and device for radio frequency emission system

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Embodiment Construction

[0092] At present, the spectrum used in wireless communication is getting wider and wider, and the adoption of technologies such as high-order modulation, multi-carrier technology, and carrier aggregation has significantly increased the peak-to-average ratio of uplink signals; The linear nature of high power transmitters causes stress. Various communication standards will impose strict requirements on the adjacent channel leakage ratio (Adjacent Channel Leakage Ratio, ACLR) and spectrum mask of the transmission. In order to meet these requirements, it is necessary to allow the signal to have a large power back-off (BOF) when designing the power amplifier. ), it is very uneconomical to do so, so it is necessary to introduce pre-distortion technology to ensure the linearity of the radio frequency transmission system.

[0093] As mentioned above, the existing pre-distortion technology has also been widely used in radio frequency transmission systems, but its implementation is rel...

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Abstract

The invention discloses a correction table generation method and device for a radio frequency emission system. The method comprises: obtaining training data according to to-be-transmitted data to be transmitted to an antenna of the radio frequency transmitting system, wherein the to-be-transmitted data are associated with original to-be-transmitted data of the radio frequency transmitting system,and a corresponding relation exists between the training data and the original to-be-transmitted data; aligning the training data and the original to-be-transmitted data so as to enable the aligned training data and original to-be-transmitted data to meet the corresponding relationship within an error range; and generating the correction table according to the aligned training data and the original to-be-transmitted data. According to the method and the device, the complexity can be reduced, and the cost is reduced.

Description

technical field [0001] The invention relates to the communication field, in particular to a method and device for generating a correction table for a radio frequency transmission system. Background technique [0002] Pre-distortion, also known as "pre-distortion" and "pre-distortion" (Digital Pre-Distortion, DPD), is a method of digitally processing the signal in the digital domain before transmitting the signal, which is opposite to the nonlinear characteristics of the nonlinear device. Distortion to achieve the effect of offsetting the nonlinear characteristics of nonlinear devices. [0003] The existing pre-distortion technology has also been widely used in radio frequency transmission systems, but its implementation is relatively complicated and the cost is high. Contents of the invention [0004] The technical problem solved by the invention is to reduce the complexity and cost of the pre-distortion used in the radio frequency transmitting system. [0005] In order ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/49
CPCH04L25/49
Inventor 刘鑫李俊强翁毅
Owner BEIJING SPREADTRUM HI TECH COMM TECH CO LTD
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