Channel estimation method and related equipment

Abstract

The embodiment of the invention discloses a channel estimation method and related equipment, and is used for suppressing interference of other multiplexing ports and enhancing the performance of channel estimation. The method comprises the steps that pilot signals in the received signals are extracted; the pilot signals and corresponding pilot sequences are multiplied in a complex conjugated way so that the pilot signals used for filtering interpolation are obtained; the corresponding filtering interpolation coefficient used for filtering interpolation of each antenna port is determined; and the channel response estimation value of each antenna port is calculated according to the vectors of the pilot signals used for filtering interpolation and the corresponding filtering interpolation coefficient of each antenna port. The embodiment of the invention also discloses a channel estimation device and user equipment, and is used for suppressing the interference of other multiplexing ports and enhancing the performance of channel estimation.

Description

technical field [0001] The present invention relates to the communication field, in particular to a channel estimation method and related equipment. Background technique [0002] Human society's increasing demand for mobile data services is driving the continuous development of wireless communication systems towards the goal of larger capacity, higher quality user experience, and wider application scenarios. The channel experienced by the wireless communication system usually changes in time and frequency, so the wireless communication system needs channel estimation to detect data, usually through the pilot signal to achieve high reliability channel estimation. Since the pilot signal needs to occupy a certain time-frequency resource, in order to save system overhead as much as possible, when there are many pilot signals required, usually the same type of pilot signals corresponding to different antenna ports are combined by code division multiplexing (code division multiple...

AI Technical Summary

Problems solved by technology

However, due to the variability of wireless communication channels, this method may also cause some problems

For example, the transmission signal arrives at the receiver through refraction and reflection to form multipath; or, when the mobile station moves fast, the channel characteristics show fast fading, and different pilot points on time and frequency experience different channel fading, and the distance between multiple antenna ports The orthogonality of the signal is destroyed, and there will be interference between the multiplexed pilot signals, which will affect the channel estimation performance

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