Multi-path tracking method and multi-path tracking device

Abstract

The present invention discloses a multi-path tracking method and multi-path tracking device. According to one technical scheme of the invention, a multi-path tracking method in the communicating system receiver is provided. The method includes the following steps: obtaining the channel estimated value of all the activation windows used for the receiver based on the channel estimated value of the present subdistrict and the information of the activation window used for the receiver; calculating channel estimation mean value of each activation window of the receiver; calculating the channel estimation energy value based on the channel estimation mean value; and determining and outputting the first sampling timing adjustment amount by the Early-late Gate adjudication according to the maximum channel estimation energy value. The accuracy and stability of the multi-path tracking can be improved by the inventive technical scheme.

Description

technical field [0001] The present invention relates to the field of wireless communication, in particular to a multipath tracking method and a multipath tracking device in a receiver of a wireless communication system, the wireless communication system including but not limited to Time Division-Synchronous Code Division Multiple Access (Time Division-Synchronous Code Division Multiple Access) , TD-SCDMA) wireless communication system. Background technique [0002] In a receiver of a time-synchronized communication system such as a TD-SCDMA wireless communication system, there is a high requirement for precise alignment between the local sampling point and the received signal. For this reason, a time tracking (time tracking) module, also known as a multipath tracking module, is usually provided in the receiver to determine the optimal sampling timing and provide corresponding sampling timing adjustments. [0003] Generally speaking, the multipath tracking module moves the p...

AI Technical Summary

Problems solved by technology

According to the sampling timing adjustment method of the above-mentioned prior art, to find the best sampling point on 1 / 8 chip, it will be interpolated to 8 times, and the sampling rate of the receiver will greatly increase the processing load of the system

Moreover, the sampling timing adjustment method in the prior art is easily affected by noise and causes the adjusted sampling point to swing back and forth on both sides of the actual optimal sampling point, so there are problems of poor anti-noise performance and low stability

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