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Synchronization and channel estimation method and device as well as television signal receiving method and device

A channel estimation and in-phase signal technology, applied in the field of television, can solve the problems of increasing the workload of the receiver, increasing the power consumption of the receiver, etc., and achieve the effect of reducing the number of times, reducing power consumption, and reducing the workload

Active Publication Date: 2015-05-13
SOI MICRO CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Frequent synchronization and channel estimation greatly increase the workload of the receiver and also increase the power consumption of the receiver

Method used

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  • Synchronization and channel estimation method and device as well as television signal receiving method and device
  • Synchronization and channel estimation method and device as well as television signal receiving method and device
  • Synchronization and channel estimation method and device as well as television signal receiving method and device

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Embodiment Construction

[0052] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described The 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 shall fall within the protection scope of the present invention.

[0053] Such as figure 1 As shown, a synchronization and channel estimation method provided by an embodiment of the present invention includes:

[0054] S101. Measure the modulation error ratio of the demodulated signal in the subframe;

[0055] Among them, the modulation error ratio (MER) refers to a single "quality factor" of the rec...

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Abstract

The invention provides a synchronization and channel estimation method and device as well as a television signal receiving method and device. The modulation error ratio of signals after demodulation treatment can be measured and is compared with the threshold value; if the modulation error ratio of signals after demodulation treatment is less than the threshold value, the next subframe is controlled for synchronization and channel estimation, or the result of the synchronization and channel estimation of the subframe acts as the result of the synchronization and channel estimation of the next subframe, thus the synchronization and channel estimation is not required to be carried out. Therefore, according to the invention, the times of the synchronization and channel estimation of the subframe can be reduced, the operation amount of a receiving machine is reduced, and the power consumption of the receiving machine is also lowered.

Description

technical field [0001] The invention relates to the technical field of television, in particular to a synchronization and channel estimation method and device, and a television signal receiving method and device. Background technique [0002] Digital TV technology has been vigorously promoted due to its small signal loss and good reception effect. Many countries have announced their own digital TV standards, such as the EU's DVB-T (Digital Video Broadcasting-Terrestrial, terrestrial wireless digital video broadcasting) standard and Japan's ISDB-T (Integrated Services Digital Broadcasting-Terrestrial, terrestrial wireless digital broadcasting integration Service standards. China has also announced its own digital TV standard: DTMB (Digital Television Terrestrial Multimedia Broadcasting, terrestrial wireless digital TV media broadcasting), which adopts a single-carrier and multi-carrier transmission scheme, of which the single-carrier scheme comes from the ADTB- The T system...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/455
Inventor 管武梁利平李婧
Owner SOI MICRO CO LTD
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