Method and device for determining and eliminating frequency deviation based on clustering, and electronic equipment

Abstract

The embodiment of the invention provides a method and device for determining and eliminating frequency deviation based on clustering, and electronic equipment. The method includes the steps: determining a constellation diagram of a received signal; determining N different values in a preset frequency section, and taking the determined N different values as the N frequency deviation estimation values; correcting the constellation diagram according to each frequency deviation estimation value to obtain a corrected constellation diagram, clustering the signal points in the corrected constellationdiagram, and calculating the area of a signal region in the constellation diagram after the clustering; determining a frequency deviation estimation value of the signal region corresponding to the minimum area as a frequency deviation value. According to the embodiment of the invention, the method can improve the stability of the calculation result of the frequency deviation value.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method, device and electronic equipment for determining and eliminating frequency offset based on clustering. Background technique [0002] With the rapid development of wireless communication technology, people have higher and higher requirements on the quality of wireless communication. In the field of wireless communication, the frequency offset between transceivers will seriously reduce the recognition accuracy of the received signal at the receiving end. Specifically, the frequency offset will cause the constellation diagram of the received signal to rotate, and the rotation of the constellation diagram will cause a large degree of distortion to the received signal, thus seriously reducing the recognition accuracy of the received signal at the receiving end. [0003] At present, the commonly used method for determining the frequency offset value includes: f...

AI Technical Summary

Problems solved by technology

[0004] However, when the discrete numerical point n of the received signal takes different values, the calculation result of the auxiliary angle of the complex signal will be very different, and then the calculation result of the frequency offset value calculated by using the auxiliary angle will also be very different. different

It can be seen that in the existing method for calculating the frequency offset value, the accuracy of the calculation result of the frequency offset value is unstable

Images