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An information processing method and electronic device

An information processing method and technology of electronic equipment, applied in the field of communication, can solve the problems of estimated SNR, no effective solution, inability, etc.

Active Publication Date: 2019-06-25
LENOVO (BEIJING) LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since LTE-A PUSCH supports multi-stream transmission, the demodulation reference signal (DMRS) signals of multiple streams with different cyclic shifts are superimposed together and received by each antenna at the receiving end. The effective channel is the superposition of channels of multiple streams, therefore, it no longer has the above-mentioned approximation of adjacent subcarriers, resulting in the inability to estimate the SNR from the frequency domain
However, if the existing time-domain estimation scheme is used, that is, the equivalent channel is changed to the time domain, and the paths with the highest energy are selected as signal energy, and the others are treated as noise, the estimated SNR is relatively different from the real SNR. Big
In related technologies, there is no effective solution to this problem

Method used

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Experimental program
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Embodiment 1

[0048] An embodiment of the present invention provides an information processing method, and the method is applied to an electronic device, such as figure 1 As shown, the method includes:

[0049] Step 101, triggering a first operation, the first operation is used to represent the estimation of the signal-to-noise ratio in channel transmission;

[0050] Step 102. In response to the first operation, generate first information, and the first information is used to perform frequency domain windowing in the frequency domain;

[0051] Step 103, using the first information to intercept the first sampling object with energy concentration in the frequency domain by performing frequency domain windowing;

[0052] Step 104, use the first sampling object to estimate the signal-to-noise ratio.

[0053] Using the embodiment of the present invention, through steps 101-102, the first information is generated through the interoperation of trigger and response, such as the "window function" ...

Embodiment 2

[0056] An embodiment of the present invention provides an information processing method, and the method is applied to an electronic device, such as figure 2 As shown, the method includes:

[0057] Step 201, triggering a first operation, the first operation is used to represent the estimation of the signal-to-noise ratio in channel transmission;

[0058] Step 202, generating a first equivalent channel in the frequency domain in response to the first operation;

[0059] Step 203. Generate first information, and the first information is used to perform frequency domain windowing in the frequency domain;

[0060]Step 204, after generating the first information, obtain a second equivalent channel according to the first equivalent channel and the first information;

[0061] Here, step 204 can actually be understood as using the first information to intercept the first sampling object with concentrated energy in the frequency domain by performing frequency domain windowing, and th...

Embodiment 3

[0065] Based on the second embodiment of the above method, after the second equivalent channel is obtained according to the first equivalent channel and the first information, as image 3 As shown, the method also includes:

[0066] Step 301, transforming the second equivalent channel from the frequency domain to the time domain, and adopting a fixed mode of time domain windowing to transform the first sampling object to obtain a second sampling object;

[0067] Step 302, detecting whether there are L multipath signals with power greater than or equal to the first threshold among the M multipath signals of the second sampling object, and obtaining a detection result, wherein the M and the L are natural numbers greater than 1;

[0068] Step 303, when the detection result is yes, the L multipath signals whose power is greater than or equal to the first threshold among the M multipath signals are taken as the L multipath signals with the highest power, and determined as valid sig...

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Abstract

The invention discloses an information processing method and an electronic device. The method comprises steps: a first operation is triggered, wherein the first operation is used for representing estimation on a signal-to-noise ratio in channel transmission; in response to the first operation, first information is generated, wherein the first information is used for carrying out frequency domain windowing on the frequency domain; the first information is used for intercepting and acquiring a first sampling object with concentrated energy in the frequency domain through frequency domain windowing; and the first sampling object is used for estimation on the signal-to-noise ratio.

Description

technical field [0001] The invention relates to communication technology, in particular to an information processing method and electronic equipment. Background technique [0002] In the process of implementing the technical solutions of the embodiments of the present application, the inventors of the present application at least found the following technical problems in the related art: [0003] In the scenario of LTE uplink channel transmission, the commonly used channel equalization algorithm needs to estimate the signal-to-noise ratio (SNR) in advance, and it is very important whether the SNR can be accurately estimated. In LTE uplink transmission, the SNR can be estimated by using the similar characteristics of adjacent subcarrier channels in the frequency domain. Because of the similarity of adjacent subcarriers, the energy in the frequency domain is relatively concentrated, so the estimated SNR is different from the real SNR. Small enough to ensure the accuracy of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L25/02H04L27/26
Inventor 凌为
Owner LENOVO (BEIJING) LTD