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Signal decision method and device

A signal judgment and judgment technology, which is applied in the field of communication, can solve problems such as the inability to obtain judgment results, and achieve the effect of avoiding influence

Inactive Publication Date: 2014-04-16
HUAWEI TECH CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In the process of researching the prior art, the inventor found that since the acquired digital signal that needs to be equalized contains channel noise, the existing signal judgment method performs time-domain equalization on the digital signal that needs to be equalized, which cannot avoid the impact of channel noise on the time-domain equalization. influence, so it is impossible to obtain accurate judgment results

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] The invention provides a signal judgment method and a signal judgment device for realizing the method. In order to better understand the technical solutions of the present invention, the embodiments provided by the present invention will be described in detail below in conjunction with the accompanying drawings.

[0031] see figure 1 , figure 1 It is a flow chart of the signal judgment method provided by Embodiment 1 of the present inven...

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Abstract

The invention discloses a signal decision method and device. The method comprises the following steps of: processing an equalized front assumption code element and a digital signal I[K] to be decided to obtain decision values C[k] after deciding; and then obtaining a decision code element value according to all decision values C[k]. According to the embodiment of the invention, the generated front assumption code element signal, instead of the digital signal to be equalized, is subjected to time domain equilibrium; the influence of channel noise to the time domain equilibrium can be avoided; and a precision decision result can be obtained finally.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a signal judgment method and device. Background technique [0002] In a digital communication system, intersymbol interference (ISI, InterSymbol Interference) occurs during signal transmission, resulting in a high bit error rate of the received signal, which restricts the transmission performance of the communication system. [0003] In order to reduce the impact of intersymbol interference on the performance of the communication system, the received signal can be equalized, that is, the transfer function of the communication system can be corrected to make it meet or approach the characteristics required for no intersymbol interference. Equalization is divided into time-domain equalization and frequency-domain equalization. Time-domain equalization is considered directly from the perspective of time response, so that the impulse response of the entire communicatio...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/03
Inventor 许渤赵婵
Owner HUAWEI TECH CO LTD
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