SNR estimation method and SNR estimation system

A technology of estimation value and estimation module, which is applied in the field of signal-to-noise ratio estimation to achieve the effects of improving estimation accuracy, high estimation accuracy and wide estimation range

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A technology of estimation value and estimation module, which is applied in the field of signal-to-noise ratio estimation to achieve the effects of improving estimation accuracy, high estimation accuracy and wide estimation range

CN111147166AInactive Publication Date: 2020-05-12中科南京移动通信与计算创新研究院

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[0036] Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0037] In the description of the present invention, several means one or more, and multiple means two or more. Greater than, less than, exceeding, etc. are understood as not including the original number, and above, below, within, etc. are understood as including the original number. If the description of the first and second is only for the purpose of distinguishing the technical features, it cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or i...

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Abstract

The invention discloses an SNR estimation method. The SNR estimation method comprises the following steps: converting an input signal into a to-be-estimated noise-added signal; determining the switching threshold of the to-be-estimated noise-added signal through software simulation; calculating the signal-to-noise ratio estimated value of the to-be-estimated noise-added signal through an ECF algorithm; comparing the estimated value with a threshold: if the estimated value is less than the threshold, retaining the estimated value; and if the estimated value is not less than the threshold value,calculating the signal-to-noise ratio estimated value of the to-be-estimated noise-added signal through an SVR algorithm. The invention further discloses an SNR estimation system. The SNR estimationsystem and the SNR estimation method can be suitable for a high signal-to-noise ratio range and a low signal-to-noise ratio range and are wide in estimation range and high in precision.

Description

technical field [0001] The invention relates to the field of signal-to-noise ratio estimation, in particular to an SNR estimation method, a MATLAB software simulation method and an SNR estimation system. Background technique [0002] SNR is an important factor affecting channel quality in wireless communication systems. The signal-to-noise ratio estimation is mainly in the receiving module. In many occasions, such as power control, decoding cut-off condition setting, adaptive handover, adaptive coding and modulation, etc., accurate signal-to-noise ratio estimation is required to obtain the best performance. , the signal-to-noise ratio estimate (SNR) can be used as prior information for the efficient operation of signal processing algorithms in communication systems. [0003] Most of the existing algorithms at this stage use the estimation method of auxiliary information, and most of them have better estimation results in the range of low SNR or high SNR, while in the range ...

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Application Information

Patent Timeline

12 May 2020

Publication

CN111147166A

IPC: H04B17/336; H04L25/02

CPC: H04L25/024; H04B17/336

Inventors: 曹泽玲; 赵峰