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Signal equalization method and device, optical receiver

A signal equalization and signal equalization technology, which is applied in the communication field, can solve the problem of large resource consumption and achieve the effect of reducing resources and reducing the number of path branches

Active Publication Date: 2022-01-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The embodiment of the present application provides a signal equalization method and device, and an optical receiver, which can solve the problem of large resource consumption in the signal equalization process in the related art

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  • Signal equalization method and device, optical receiver
  • Signal equalization method and device, optical receiver
  • Signal equalization method and device, optical receiver

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Embodiment Construction

[0080] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0081] figure 1 shows a schematic structural diagram of a current signal transmission system, see figure 1 , the signal transmission system includes a laser, a driver, a modulator, a transmission link, a photoelectric conversion device, an ADC and a DSP unit. Wherein, the laser, the driver and the modulator are located at the transmitting end, and the photoelectric conversion device, ADC and DSP unit are located at the receiving end (that is, in the optical receiver), and the modulator and the photoelectric conversion device are connected by a transmission link, which can be be wireless link, cable or fiber optic. After the optical signal sent by the laser is driven by the driver and modulated by the modulator, it is sent to th...

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Abstract

The present application discloses a signal equalization method and device, and an optical receiver, which belong to the technical field of communications. Including: coarse decision module, branch selection module, equalization module, filter module and MLSE module, the coarse decision module is connected with the equalization module and the branch selection module, and the branch selection module is connected with the MLSE module; the equalization module is used to equalize the input initial signal processing to obtain an equalized signal; the filtering module is used to filter the equalized signal to obtain a filtered signal; the coarse decision module is used to select the target level from the initial levels corresponding to the equalized signal according to the distribution of the equalized signal, and the target level The number of the levels of , is less than the number of levels of the initial level; the branch selection module is used to determine the target path branch corresponding to the target level; the MLSE module is used to determine the optimal path branch of the filtered signal in the target path branch. The problem of relatively large resource consumption in the signal equalization process in the related art is solved. This application is used to equalize signals.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a signal equalization method and device, and an optical receiver. Background technique [0002] With the rapid development of contemporary communication technology, the requirements for the transmission rate and reliability of signal transmission are getting higher and higher. During the signal transmission process, due to the limitation of the bandwidth of each device in the signal transmission system, the problem of intersymbol interference (Inter Symbol Imerference; ISI) will occur, which greatly affects the quality of the signal. In order to eliminate or weaken the ISI of the signal, it is usually necessary to equalize the signal, and the Maximum Likelihood Sequence Estimation (MLSE) algorithm (also called the Viterbi algorithm) as an equalization algorithm with better performance has become the focus of current research. [0003] The current signal tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7105H04L25/03
CPCH04B1/71057H04B10/60H04B10/6971H04L25/03878
Inventor 尚冬冬
Owner HUAWEI TECH CO LTD
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