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Parallel filter structure, oscilloscope and method for processing signals

A filter structure and signal processing technology, applied in digital variable/waveform display, instrument, digital transmission system, etc., can solve problems such as different equalization characteristics

Pending Publication Date: 2022-07-29
ROHDE & SCHWARZ GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, FFE and DFE have different equalization characteristics, resulting in different equalization functions when processing the same signal, which raises questions about the comparability of the respective output signals of the two equalizer modules

Method used

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  • Parallel filter structure, oscilloscope and method for processing signals
  • Parallel filter structure, oscilloscope and method for processing signals
  • Parallel filter structure, oscilloscope and method for processing signals

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Embodiment Construction

[0042] The detailed description set forth below in connection with the appended drawings, wherein like numerals refer to like elements, is intended as a description of various embodiments of the disclosed subject matter and is not intended to represent the only embodiments. Each embodiment described in this disclosure is provided by way of example or illustration only, and should not be construed as preferred or advantageous over other embodiments. The illustrative examples provided herein are not intended to be exhaustive or to limit the claimed subject matter to the precise forms disclosed.

[0043] For purposes of this disclosure, the phrase "at least one of A, B, and C" means, for example, (A), (B), (C), (A and B), (A and C), (B and C) ) or (A, B and C), including all other possible permutations where more than three elements are listed. In other words, the term "at least one of A and B" generally refers to "A and / or B", ie "A" alone, "B" alone, or "A and B".

[0044] f...

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Abstract

The invention relates to a parallel filter structure (20) for processing a signal. The parallel filter structure (20) includes a signal input (22) configured to receive a time and value discrete input signal. The parallel filter structure (20) includes a feed-forward equalizer module (26) connected to the signal input (22) for receiving an input signal discrete in time and value. The parallel filter structure (20) includes a decision feedback equalizer module (28) connected to the signal input (22) for receiving a time and value discrete input signal. The feed-forward equalizer module (26) and the decision feedback equalizer module (28) together form a parallel circuit (24). Further, an oscilloscope (10) and a method of processing a signal are provided.

Description

technical field [0001] The present invention relates to a parallel filter structure for processing signals. Furthermore, the present invention relates to an oscilloscope. Furthermore, the present invention also relates to a method of processing a signal. Background technique [0002] In test and measurement instruments, such as oscilloscopes, it is known to process input signals to obtain input signals that are discrete in time and value, ie, a digitized signal. The digitized signal can be directly input, or rather, collected by processing the analog input signal, that is, sampling the analog input signal to obtain the samples. [0003] Input signals that are discrete in time and value are internally processed by test and measurement instruments (eg, via eye diagrams) to obtain specific information that is output. Therefore, the input signal that is discrete in time and value is internally processed by a filter structure such as a decision feedback equalizer (DFE) block. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03H17/02
CPCH03H17/02H03H2017/0081H03H2017/009G01R13/0218G01R13/0272H04L25/03057
Inventor 伯恩哈德·尼奇
Owner ROHDE & SCHWARZ GMBH & CO KG