Reference signal transmitting method, phase noise determining method and related devices

Abstract

The invention relates to the field of wireless communications, and particularly relates to a reference signal transmitting method, a phase noise determining method and related devices, aiming to solvethe problem that different phase noises of different antenna units or antenna ports at a transmitting end cannot be accurately estimated and compensated in the prior art. The method includes the following steps that: the transmitting end respectively transmits each precoded DMRS and PTRS to a receiving end through the own corresponding antenna groups with the same phase noise, wherein the antennaunits or the antenna ports of the same antenna group have the same phase noise; and when receiving the PTRS, the receiving end performs channel estimation based on each received PTRS to determine thephase change caused by the phase noises corresponding to different antenna groups. Thereby, even if the phase noises of different antennae at the transmitting end are different, the phase changes caused by different phase noises can be accurately determined, and thus all data transmitted by the different antenna groups can be accurately demodulated according to different phase changes.

Description

Technical field [0001] The present invention relates to the field of wireless communication, and in particular to a reference signal transmission method, a phase noise determination method and related devices. Background technique [0002] Phase noise is a major noise that causes interference to the communication system in wireless communication. It comes from the oscillators in the transmitter and receiver of the communication system and can have a serious impact on the transmission of multi-carrier signals. Therefore, in order to reduce The effect of phase noise on the transmission of multi-carrier signals can be compensated for the phase noise of the received signal at the receiving end to ensure the accuracy of transmission. [0003] In the prior art, by introducing a phase tracking reference signal at the transmitting end, the phase tracking reference signal tracks the phase change caused by the phase noise, and then the receiving end performs phase noise compensation on the r...

AI Technical Summary

Problems solved by technology

[0010] Embodiments of the present invention provide a reference signal transmission method, a phase noise determination method and related devices, which are used to solve the problem in the prior art that it is impossible to accurately estimate and compensate different phase noises of different antenna units or antenna ports at the transmitting end

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