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A symbol timing synchronization method and device thereof

A symbol timing synchronization and symbol synchronization technology, applied in the field of communication, can solve the problems of low synchronization success rate, high probability of device false alarm, excessive data calculation, etc., to ensure stability, improve user experience, and reduce computing power consumption Effect

Active Publication Date: 2022-05-27
AUCTUS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a symbol timing synchronization method and its device, which solves the technical problems of high false alarm probability and low synchronization success rate of equipment during symbol synchronization due to excessive data calculation in the existing symbol synchronization process

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  • A symbol timing synchronization method and device thereof
  • A symbol timing synchronization method and device thereof
  • A symbol timing synchronization method and device thereof

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no. 1 example

[0058] figure 2 A flowchart of a method for synchronizing symbol timing provided by the first embodiment of the present invention, the method specifically includes the following processing steps:

[0059] S201, the receiving end samples the signal according to the signal sent by the transmitting end, and samples the signal multiple times to obtain at least one first oversampling signal, each of which includes N signal sampling points , N is a positive integer greater than 2;

[0060] S202, according to a preset sampling point extraction rule, extract one signal sampling point from each of the first oversampling signals.

[0061] S203: Perform the first correlation calculation on all the extracted signal sampling points and the locally known synchronization sequence respectively.

[0062] S204, it is judged whether the result obtained by the first correlation calculation satisfies the symbol synchronization condition.

[0063] S205, if satisfied, determine the synchronizati...

no. 2 example

[0098] See Figure 4 , Figure 4 The symbol timing synchronization device provided in this embodiment includes a sampling module 41, a correlation calculation module 42, a judgment module 43 and a synchronization module 44, wherein,

[0099] The sampling module 41 is configured to sample the signal according to the signal sent by the transmitter, and to sample the signal multiple times to obtain at least one first oversampling signal, each of which includes N signals sampling point, N is a positive integer greater than 2, and according to the preset sampling point extraction rule, extracts a signal sampling point from each of the first oversampling signals;

[0100] The correlation calculation module 42 is used to perform the first correlation calculation with all the extracted signal sampling points and the local known synchronization sequence respectively;

[0101] Judging module 43, for judging whether the result obtained by the first correlation calculation satisfies the...

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Abstract

The present invention provides a symbol timing synchronization method and a device thereof. The method includes sampling a signal at a receiving end according to a signal sent from a transmitting end, and performing multiple samplings on the signal to obtain at least one first oversampled signal, According to the preset sampling point extraction rule, a signal sampling point is extracted from each of the first oversampled signals, and all the extracted signal sampling points are respectively correlated with the local known synchronization sequence for the first time to determine the first Whether the result obtained by sub-correlation calculation satisfies the symbol synchronization condition, if so, then determine the synchronization point position according to all the signal sampling points extracted, and perform symbol synchronization processing, by extracting a sampling point from the oversampled signal. Correlation calculations are performed to reduce the amount of data calculation at the receiving end when performing correlation calculations on oversampled signals, that is, each correlation calculation only needs to be calculated for one sampling point, thereby reducing the calculation power consumption at the receiving end.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to a symbol timing synchronization method and device thereof. Background technique [0002] In a digital communication system, symbol timing synchronization is the basic condition to ensure that the receiving end can correctly restore the transmitted signal. In the prior art, the symbol timing synchronization of a digital communication system is usually realized by a sliding correlation algorithm based on a known synchronization sequence. figure 1 As shown, first, the receiving end compares the received oversampling signal (assuming the oversampling multiple is 6, each symbol is 6 sampling points) with the local known synchronization sequence (the local known synchronization sequence also needs to be oversampled) Multiply, and then accumulate the multiplied results to obtain the corresponding accumulated and summed results. Finally, compare the accumulated and...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/26
CPCH04L27/2662H04L27/2663H04L27/2668
Inventor 郑大海
Owner AUCTUS TECH CO LTD