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Error correction method and error correction device

An error correction method and retrospective error correction technology, applied in the field of communication, can solve the problems of equalizer signal misjudgment, high equalizer bit error rate, error code transmission, etc., so as to improve the equalization performance and reduce the bit error rate.

Active Publication Date: 2019-10-29
HUAWEI TECH CO LTD
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Problems solved by technology

[0004] Just like most electronic devices, the equalizer will also have some signal misjudgment. When a bit error occurs, due to the existence of the decision feedback structure, not only the bit error will affect the misjudgment of the next signal, but also cause error transmission. , resulting in misjudgment of a large number of signals, resulting in a higher bit error rate of the equalizer

Method used

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  • Error correction method and error correction device

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Embodiment Construction

[0037] The embodiment of the present application provides an error correction method and an error correction device, which are used to reduce the bit error rate of the FFE and improve equalization performance.

[0038] The following will clearly and completely describe the technical solutions in this application with reference to the accompanying drawings in this application. Obviously, the described embodiments are some of the embodiments of this application, but not all of them.

[0039] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of this application and the above drawings are used to distinguish similar objects and not necessarily Describe a particular order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments described herein can be practiced in sequences other than those illustrated or described herein. Furthermore, the terms "comprising" an...

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Abstract

The embodiment of the invention discloses an error correction method and an error correction device, which are used for reducing the bit error rate of an FFE and improving the equalization performance. The method comprises the steps of obtaining an output signal and an amplitude value of a forward equalizer FFE, wherein the amplitude value is a channel response amplitude value corresponding to anequivalent channel of the FFE; carrying out level judgment on the output signal according to the amplitude value to obtain a first judgment signal, wherein the first judgment signal comprises (2M-1) judgment symbols, and M is an integer not smaller than 2; carrying out (1 / (1+D)) decoding on the first decision signal to obtain a first decoded signal, determining the first decoded signal as a seconddecision signal, wherein the second decision signal comprises (M-1) decision symbols; if the absolute value of the second decision signal is greater than (M-1), determining that a burst error occursin the second decision signal; and performing error correction on a burst error in the second decision signal.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to an error correction method and an error correction device. Background technique [0002] The high-speed link technology is the basic technology between the chip and the interface. The high-speed link includes: a high-speed electrical link and a high-speed optical link. No matter in the high-speed electrical link or in the high-speed optical link, there is an inter symbol interference (inter symbol interference, ISI) phenomenon, and the ISI phenomenon will adversely affect signal transmission. In order to overcome the adverse effects of the ISI phenomenon, the ISI is generally filtered through an equalizer. [0003] Previously, the equalizer had a decision feedback structure. In other words, the equalizer used the decision result of the previous input signal to equalize the current input signal to obtain the decision result of the current input signal, and ...

Claims

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Application Information

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IPC IPC(8): H04L1/00
CPCH04L1/0057H04L1/0058H04L1/004H04L1/0054H04L25/061H04L25/03057H04L25/03178H04L7/0062H04L25/03343H04L2025/0349
Inventor 陆玉春
Owner HUAWEI TECH CO LTD
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