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Calculation method and decoding device of system signal-to-noise ratio

A calculation method and a technology of a decoding device, which are applied to the calculation of system signal-to-noise ratio and its decoding device, can solve problems such as inaccurate calculation results of signal-to-noise ratio, achieve the effects of avoiding difficult calculations, accurate calculation results, and improving estimation performance

Active Publication Date: 2019-08-16
ALI (CHENGDU) CORP
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Problems solved by technology

In view of this, when the channel environment changes and the total number of pilot signals is greatly reduced, the calculation result of the existing signal-to-noise ratio will be more inaccurate

Method used

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  • Calculation method and decoding device of system signal-to-noise ratio
  • Calculation method and decoding device of system signal-to-noise ratio
  • Calculation method and decoding device of system signal-to-noise ratio

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Embodiment Construction

[0015] Hereinafter, the present invention will be described in detail by illustrating various embodiments of the invention by way of drawings. However, inventive concepts may be embodied in many different forms and should not be construed as limited to the illustrative embodiments set forth herein. Furthermore, the same reference numbers may be used to denote similar elements in the drawings.

[0016] Specifically, the method for calculating the system signal-to-noise ratio provided by the embodiment of the present invention can be applied to a decoding device of any transmission system. For example, the transmission system may be a second generation terrestrial digital video broadcasting (Digital Video Broadcasting—Second Generation Terrestrial, DVB-T2) system, but the present invention is not limited thereto.

[0017] see figure 1 , figure 1 It is a schematic flowchart of the method for calculating the system signal-to-noise ratio provided by the embodiment of the present...

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Abstract

The embodiment of the invention provides a system signal-to-noise ratio calculation method and a decoding device thereof. The calculation method is applied to the decoding device of a transmission system and comprises the following steps: receiving a frame sequence, and based on a plurality of pilot signals of at least one current symbol code in the frame sequence, estimating a pilot signal-to-noise ratio result corresponding to the current symbol code; obtaining an amplitude gain coefficient associated with the pilot signals, as well as the number of the pilot signals and the number of data signals which are associated with the frame sequence; and based on the pilot signal-to-noise ratio result, the number of the pilot signals and the number of the data signals, calculating out a system signal-to-noise ratio result corresponding to the transmission system.

Description

technical field [0001] The present invention relates to a system signal-to-noise ratio (Signal-to-noise Ratio, SNR or S / N) calculation method and its decoding device, and in particular to a signal-to-noise ratio result, guide The method and the device thereof are used to effectively calculate the system signal-to-noise ratio result based on the number of frequency signals and the number of data signals. Background technique [0002] The signal-to-noise ratio refers to a measurement value at the decoding end of a communication system, which is defined as the ratio of the known signal power strength (Power of Signal) to the noise power strength (Power of Noise), and is usually expressed in decibels (dB). Therefore, the decoding end often uses the signal-to-noise ratio as the basis for judging the quality of the transmission channel. Among the existing technologies, most of them use the signal-to-noise ratio estimated by the known pilot signal as the basis. Signal-to-noise rat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02
Inventor 徐玉婷
Owner ALI (CHENGDU) CORP
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