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A dpd device and method suitable for 5g broadband mimo system

A broadband and 5G technology, applied in the field of DPD devices, can solve problems such as untimely response and long polling cycle time, and achieve the effects of improving reliability, speeding up system response speed, and simple method

Active Publication Date: 2022-03-15
NANJING HOWKING COMM TECH
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  • Claims
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AI Technical Summary

Problems solved by technology

The multi-channel switching method requires a polling method to feedback each signal. When the number of channels is large, the polling cycle takes a long time and takes up less hardware resources, but the response is not timely.

Method used

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  • A dpd device and method suitable for 5g broadband mimo system
  • A dpd device and method suitable for 5g broadband mimo system
  • A dpd device and method suitable for 5g broadband mimo system

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Embodiment Construction

[0039] Such as figure 1 , The present invention discloses an apparatus suitable for DPD 5G wideband MIMO system, comprising a data processing module, digital to analog conversion module 2, a signal output module 3, module 4, and the feedback signal analog-digital conversion module 5,

[0040] A data processing module baseband input signal and the feedback signal to an iterative process, obtaining pre-distortion coefficients, the model by the DPD DPD signal processing with the base, and then connected to the converter module 2;

[0041] DAC predistortion signal processing module 2 of the data processing module is a digital to analog conversion, quadrature modulated IQ filtering module connected to the signal output 3;

[0042] 3 signal converter module of the second input signal output module performs power amplification, filtering, and then transmitted via the antenna outputs;

[0043] 4 is to ensure that the feedback signal a feedback signal module has at least two feedback paths...

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Abstract

The present invention relates to the field of wireless communication technology, and in particular to a DPD device suitable for 5G broadband MIMO systems, including a data processing module, a digital-to-analog conversion module, a signal output module, a signal feedback module and an analog-to-digital conversion module. The signal feedback module is guaranteed The DPD feedback signal has at least two feedback paths, the first feedback path is the main feedback loop, and the second feedback path is the auxiliary feedback loop. The invention has the advantages of occupying less hardware resources, and being able to monitor the DPD feedback loop signal in real time and respond in a timely manner.

Description

Technical field [0001] The present invention relates to the field of wireless communication technology, particularly to a method and apparatus suitable for DPD 5G wideband MIMO system. Background technique [0002] With the development of wireless communication technology, the data transmission rate requirements continue to increase, in order to meet the large capacity data transmission on scarce spectrum resources, communication systems now have high-bandwidth, high order modulation and multiple input multiple output (MIMO) technology. Such non-constant envelope modulation, multi-carrier modulation technique will result in a peak average ratio signal, coupled with high-bandwidth applications, the linearity of the RF power amplifier for a higher requirement. To improve the efficiency of RF power amplifiers, to reduce power consumption, the most effective way is a digital signal pre-distortion (DPD) process. [0003] When using DPD apparatus, the RF power amplifier output signal n...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H03F1/32H03F3/213
CPCH03F1/32H03F3/213H03F2200/451H03F3/24H03F1/3247H03F3/189H03F3/68H04B1/0475H04B2001/0425
Inventor 陈平王从瑞彭金民秦玉峰
Owner NANJING HOWKING COMM TECH
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