Digital-predistortion-based sampled signal processing system

A sampling signal processing and digital predistortion technology, which is applied to digital variable/waveform display, parts of electrical measuring instruments, measuring devices, etc. Signal errors, compensation for performance degradation, effect of increasing input bandwidth
CN102565481AInactive Publication Date: 2012-07-11JIANGSU LVYANG ELECTRONICS INSTR GROUP
5 Cites 1 Cited by

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
JIANGSU LVYANG ELECTRONICS INSTR GROUP
Publication Date
2012-07-11
Estimated Expiration
Not applicable · inactive patent

Smart Images

  • Figure 1
    Figure 1
  • Figure 2
    Figure 2
  • Figure 3
    Figure 3
Patent Text Reader

Abstract

The invention discloses a digital-predistortion-based sampled signal processing system. The system comprises a reference signal source, an analog front end, digital-to-analog converters, time-domain equalizers, filters and a signal chain compensation controller which are connected through circuits to form a closed-loop circuit. A digital-predistortion-based signal chain compensation technology is applied to a digital signal processing system, so that the signal error can be remarkably reduced, the input bandwidth can be improved, and the problem about performance degradation caused by the inconsistency of circuits of a high-speed signal sampling system can be solved; and the problem that the signal chain compensation technology affects the real-time performance of an oscilloscope is solved due to the application of a high-speed signal processing technology.
Need to check novelty before this filing date? Find Prior Art

Description

technical field

[0001] The invention relates to a sampling signal processing system, in particular to a sampling signal processing system based on digital predistortion, and belongs to the technical field of signal testing and measurement. Background technique

[0002] Signal chain compensation technology is a technical processing method in the field of electronic measuring instruments, but because of the real-time problems in the application of this technology in the field of oscilloscope high-frequency signals, it has not been used in domestic and foreign medium and high-end oscilloscope products. In order to minimize the inconsistency of the alternate sampling system, it is necessary to select an ADC (analog-to-digital converter) with good consistency and design a clock distributor so that it has as small a phase error and phase noise as possible. However, due to the large discreteness of the device, the effect of the above method is limited, so a new sampling signal proc...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More