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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 improving slow feedback response

Active Publication Date: 2021-06-11
NANJING HOWKING COMM TECH
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  • Summary
  • Abstract
  • Description
  • 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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  • DPD device and method suitable for 5G broadband MIMO system
  • DPD device and method suitable for 5G broadband MIMO system
  • DPD device and method suitable for 5G broadband MIMO system

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Embodiment Construction

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

[0040] The data processing module 1 performs iterative processing on the baseband input signal and the feedback signal, obtains the predistortion coefficient, performs DPD processing on the baseband signal through the established DPD model, and then connects to the digital-to-analog conversion module 2;

[0041] The digital-to-analog conversion module 2 performs digital-to-analog conversion on the predistortion signal processed by the data processing module 1, performs quadrature IQ modulation after filtering, and is connected to the signal output module 3;

[0042] The signal output module 3 performs power amplification and filtering processing on the signal input by the digital-to-a...

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Abstract

The invention relates to the technical field of wireless communication, in particular to a DPD device suitable for a 5G broadband MIMO system, which comprises 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, and is characterized in that the signal feedback module is used for ensuring that a DPD feedback signal has at least two feedback paths, the first feedback path is a main feedback loop, and the second feedback path is an auxiliary feedback loop. The method has the advantages that the occupied hardware resources are few, the DPD feedback loop signal can be monitored in real time, and the response is timely.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a DPD device and method suitable for 5G wideband MIMO systems. Background technique [0002] With the development of wireless communication technology, the requirements for data transmission rate continue to increase. In order to meet the needs of large-capacity data transmission on scarce spectrum resources, communication systems now use technologies such as high bandwidth, high-order modulation, and multiple-input multiple-output (MIMO). This non-constant envelope modulation and multi-carrier technology will lead to a peak-to-average ratio of the modulated signal. In addition to high-bandwidth applications, higher requirements are placed on the linearity of the RF power amplifier. In order to improve the efficiency of RF power amplifiers and reduce system power consumption, the most effective way at present is to perform pre-distortion (DPD) processing on...

Claims

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Application Information

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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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