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Frequency offset estimation method, system, electronic equipment and storage medium

A frequency offset estimation and frequency offset estimation technology, which is applied in the communication field, can solve the problems of rigid post-processing mechanism and difficulty in setting standard parameters of all scenarios, and achieve the effect of improving confidence

Active Publication Date: 2022-04-12
UNISOC CHONGQING TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art in the frequency offset estimation process, especially in weak signal scenarios, that the post-processing mechanism for estimation results is rigid and it is difficult to set standard parameters common to all scenarios, Provide a frequency offset estimation method, system, electronic equipment and storage medium

Method used

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  • Frequency offset estimation method, system, electronic equipment and storage medium
  • Frequency offset estimation method, system, electronic equipment and storage medium
  • Frequency offset estimation method, system, electronic equipment and storage medium

Examples

Experimental program
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Effect test

Embodiment 1

[0056] figure 1 A frequency offset estimation method is shown. The frequency bias estimation method is suitable for estimating the frequency difference between the receiver and the transmitter in a plurality of communication systems, particularly the frequency difference estimate of the signal quality is poor. The frequency bias estimation method includes the following steps:

[0057] Step 11: Receive the subframe sample of the downlink physical channel.

[0058] Step 12: Signal power information and disturbance power information are calculated based on the subframe sample.

[0059] Step 13: The estimated frequency factor is calculated based on the signal power information and the disturbance power information.

[0060] Traditional frequency preflection estimation methods typically only consider signaling factors without considering the influence of disturbance factors on frequency offset estimation. In the calculation of the frequency bias estimation method of this embodiment, t...

Embodiment 2

[0062] This example is further illustrated in Example 1. The frequency offset estimation method of this embodiment gives a specific process of calculating signal power information and disturbance power information, such as figure 2 As shown, step 12 specifically includes:

[0063] Step 121: Time-frequency conversion of the time domain in the subframe sample is performed to obtain a physical signal corresponding to each OFDM symbol carrying the physical signal in the subframe sample.

[0064] Step 122: Reconstruct the local physical signal corresponding to the OFDM.

[0065] Step 123: A frequency domain channel punching response corresponding to the OFDM is calculated based on the frequency domain receives a physical signal and the local physical signal.

[0066] Step 124: In accordance with the frequency domain channel impulse response to calculate the channel phase difference information and disturbance power information.

[0067] Step 125: Calculate the signal power information ...

Embodiment 3

[0106] Figure 4 A frequency offset estimation system of the present embodiment is shown. The frequency bias estimation system is suitable for estimating the frequency difference between the receiver and the transmitter in a plurality of communication systems, particularly suitable for frequency difference estimation when signal quality is poor. The frequency bias estimation system includes: sample receiving module 21, information calculation module 22, and frequency offset estimation module 23.

[0107] The sample receiving module 21 is configured to receive subframe samples of downlink physical channels;

[0108] The information calculation module 22 is configured to calculate signal power information and disturbance power information based on the subframe sample;

[0109] The frequency bias estimation module 23 is configured to calculate the estimated frequency factor based on the signal power information and the disturbance power information.

[0110] Traditional frequency pre...

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Abstract

The invention discloses a frequency offset estimation method, system, electronic equipment and storage medium. The frequency offset estimation method includes: receiving subframe samples of a downlink physical channel; calculating signal power information and interference power information based on the subframe samples; and calculating an estimated frequency offset value based on the signal power information and the interference power information. The present invention weights the disturbing sound factor into the calculation process of the estimated frequency offset value, and adaptively weights the size of the output estimation result through the weight relationship between the signal and the disturbing sound. While improving the confidence of the output result, there is no need to The estimated values ​​undergo additional post-processing, which can be flexibly adapted to various scenarios.

Description

Technical field [0001] The invention belongs to the field of communication, and more particularly to a frequency offset estimation method, a system, an electronic device, and a storage medium. Background technique [0002] With the increasing variation of consumer application demand, mobile terminal application scenarios is also growing, and it is difficult to have a technical model to perform the optimal compromise between ability and efficiency in various application scenarios. Therefore, for different application scenarios, mobile communication evolutions, three major categories and their application technology: enhance mobile broadband (EMBB), massive machine type communication (MMTC), and ultra-reliable low delay (URLLC). Among them, MMTC, EMTC (Ultra-connected Internet), NBiot (NBIT "is the application scenario of the Internet of Things, and the two most significant features of the application scenario are enhanced coverage and low power consumption. Among them, low power c...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2657
Inventor 杨恩浩谭舒林登彪陈美燕杨柳飞
Owner UNISOC CHONGQING TECH CO LTD
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