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Method for estimating a signal-to-noise ratio

A technology of signal-to-noise ratio and synchronous signal, applied in the field of signal-to-noise ratio estimation, which can solve problems such as complex calculations, difficulties, and limitations on the accuracy of signal-to-noise ratio estimation

Active Publication Date: 2021-10-26
CONTINENTAL AUTOMOTIVE TECH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, known SNR estimation methods involve difficult and complex computational
Some of these methods rely on length-limited cyclic prefixes, which limit the accuracy of SNR estimates of received radio signals
Some other methods may be susceptible to external environmental parameters or frequency parameters or to delays due to frequency selective fading

Method used

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  • Method for estimating a signal-to-noise ratio
  • Method for estimating a signal-to-noise ratio
  • Method for estimating a signal-to-noise ratio

Examples

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Embodiment Construction

[0025] figure 1 A processing method 100 performed by a radio receiver in order to demodulate a radio signal received by the radio receiver is shown. A received radio signal including a received digital radio signal corresponds to a radio signal modulated in an OFDM manner and transmitted in a frequency band.

[0026] The processing method 100 comprises a method 200 of estimating the signal-to-noise ratio of said received digital radio signal. Said estimation method 200 is the subject of the present invention and will be described in the next paragraphs. In addition, in order to facilitate the understanding of the present invention, some steps performed before and after performing the estimation method 200 will also be described in the following paragraphs.

[0027] The radio receiver includes modules or devices such as an antenna, one or more tuners and one or more mixers. The invention is independent of the modules or devices used.

[0028] Preferably, the radio signal is...

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Abstract

The invention concerns a method (200) for estimating a signal-to-noise ratio (SNR) of a received digital radio signal. The estimation method (200) comprises a detection step (1211) consisting in recovering a received synchronisation symbol contained in the received digital radio signal, and an estimation step (1222) configured to determine the signal-to-noise ratio of the received digital radio signal, depending on the difference between a first received synchronisation signal (S^a(t)) and a second received synchronisation signal (S^b(t)). The first and second received synchronisation signals (S^a(t), S^b(t)) are included in the received synchronisation symbol.

Description

technical field [0001] The present invention generally relates to a method for estimating the Signal-to-Noise Ratio (“Signal-to-Noise Ratio” in English, abbreviated “SNR”) of a radio signal. [0002] In particular, the invention relates to a method for estimating the signal-to-noise ratio of a modulated radio signal comprising synchronization symbols. Background technique [0003] The signal-to-noise ratio is generally considered to be an important parameter for evaluating the reliability of demodulated data of a radio signal received by a radio receiver and for estimating the quality of a channel used for radio signal transmission. Therefore, the signal-to-noise ratio is used to determine radio signal processing strategies such as sound attenuation (also called "soft mute" in English), search functions, and signal mixing (in English also called "blend"), and transparent (also called "seamless" in English) transformation, concealment (also called "concealment" in English) f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/10H04L1/20H04B17/309
CPCH04L1/20H04B1/1027H04B17/336H04H2201/183H04W56/0055
Inventor 林超
Owner CONTINENTAL AUTOMOTIVE TECH GMBH