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Method for simultaneous channel estimation of multiplied sampling rate data flow

A time-domain channel estimation and channel estimation technology, which is applied in the direction of digital transmission system, multiple use of transmission paths, electrical components, etc., can solve the problems of long processing time, high complexity, and limited delay-sensitive services, and achieve processing The effect of fast, simplified operation

Active Publication Date: 2014-01-22
RUN TECH CO LTD BEIJING
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Problems solved by technology

Relatively high complexity and relatively long processing time
This kind of processing is not optimal in terms of power saving, and it is relatively limited for delay-sensitive services.

Method used

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  • Method for simultaneous channel estimation of multiplied sampling rate data flow
  • Method for simultaneous channel estimation of multiplied sampling rate data flow
  • Method for simultaneous channel estimation of multiplied sampling rate data flow

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Embodiment Construction

[0040] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present invention. It should be understood that the described embodiments are only some of the embodiments of the present invention, not all of them. example. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0041] figure 1 It is a schematic diagram of the multi-rate data channel estimation processing flow in an embodiment of the method for simultaneous channel estimation of multiple sampling rate data streams in the present invention.

[0042] The method for simultaneous channel estimation of multiple sampling rate data streams provided by the present invention is applicable to the situation of multiple sampling rate data streams at th...

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Abstract

The invention relates to a method for the simultaneous channel estimation of a multiplied sampling rate data flow. The method comprises the steps of (1) extracting pilot frequency time domain data, for channel estimation, at the pilot frequency position from the data flow and converting the pilot frequency time domain data to the frequency domain to obtain the receiving multiplied sampling rate frequency domain pilot frequency; (2), padding N zeros after each number of the locally stored time domain pilot frequency signal and converting the zero-padded local pilot frequency into the frequency domain pilot frequency to obtain the locally zero-padded frequency domain pilot frequency; (3), performing point-division on the locally zero-padded frequency domain pilot frequency according to the receiving multiplied rate frequency domain pilot frequency and obtaining the channel estimation result on the frequency domain; (4), converting the channel estimation result on the frequency domain to the time domain, extracting the time domain channel estimation result of each path of data at corresponding positions, and obtaining multiple paths of time domain channel estimation results; (5) obtaining the optimal path of channel estimation according to the comparing result of the multiple paths of time domain channel estimation results. According to the method for the simultaneous channel estimation of the multiplied sampling rate data flow, the operation can be simplified, the complexity can be reduced, power can be saved and the performance of the method is same as that obtained by performing single channel estimation of each path.

Description

technical field [0001] The invention relates to a channel estimation method, in particular to a method for simultaneous channel estimation of multiple sampling rate data streams, which belongs to the field of wireless communication. Background technique [0002] The wireless communication receiving end generally needs to perform down-sampling to obtain baseband data. Due to the limitations of the time synchronization algorithm and the autocorrelation characteristics of the synchronization sequence, it is often impossible to select the most suitable path of data after time synchronization. The usual processing is to obtain signal power by performing channel estimation on each channel of data, and select a channel of data with larger signal power to participate in detection and estimation. [0003] To perform channel estimation for each channel of data, the channel estimation module will be called multiple times. The complexity is relatively high and the processing time is r...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L25/02H04L5/00
Inventor 周维裴亚丽
Owner RUN TECH CO LTD BEIJING
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