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Frame synchronization blind identification method and device

A frame synchronization and blind recognition technology, applied in the field of communication, to achieve the effect of good fault tolerance and easy implementation

Active Publication Date: 2016-08-10
36TH RES INST OF CETC
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Therefore, this method is only suitable for the centralized insertion method, not the spaced insertion method

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  • Frame synchronization blind identification method and device
  • Frame synchronization blind identification method and device
  • Frame synchronization blind identification method and device

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Embodiment Construction

[0047] In order to make the object, technical solution and advantages of the present invention clearer, the implementation manner of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0048] figure 1 It is a flow chart of a frame synchronization blind recognition method provided by an embodiment of the present invention. Such as figure 1 As shown, the frame synchronization blind recognition method provided by the embodiment of the present invention includes:

[0049] Step S110: start from analyzing a certain bit of data in the sequence, determine the number m of frames to be analyzed, and select a sequence of appropriate length as the recognition sequence according to the number m of frames to be analyzed.

[0050] According to the quality of the acquired analysis sequence data, try to select high-quality data segments for analysis. In order to ensure the statistical discrimination of subsequent analysis, the nu...

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Abstract

The invention discloses a frame synchronization blind identification method and device. The method comprises the following steps: selecting a recognition sequence from an analysis sequence according to frame number to be analyzed; determining search range of frame length and carrying out frame length traversing; establishing a first analysis matrix, calculating column mean value thereof and calculating correlation value corresponding to the currently-searched frame length; determining frame length of the recognition sequence according to the correlation value corresponding to each searched frame length; establishing a second analysis matrix, calculating column mean value thereof and determining frame synchronization code position; and then, judging the type of frame synchronization according to the frame synchronization code position. By carrying out frame length traversing, establishing the analysis matrixes and carrying out correlation calculation, the frame synchronization code position is determined through correlation peak on the basis of obtaining the frame length of the recognition sequence, thereby finishing recognition of frame synchronization codes and realizing blind identification of frame synchronization. The method is easy to realize and good in fault tolerance, and can be suitable for centralized and interval type insertion methods and short and long synchronization codes simultaneously.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a frame synchronization blind recognition method and device. Background technique [0002] The symbol sequence of digital signal transmission in wireless communication has a structure, which is called frame synchronization structure. Only by correctly identifying the start and end of a frame from the received symbol sequence and performing synchronization can the recovery of the transmitted data be guaranteed. There are usually two methods for realizing communication symbol synchronization: one is the centralized insertion method, and the other is the spaced insertion method. The centralized insertion method inserts the frame synchronization code group centrally at the beginning of each frame, and the interval insertion method inserts the synchronization code evenly into the information code stream in a dispersed form. image 3 As shown, for a frame structure with a frame ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7073H04L27/26H04W56/00H04L7/04H04L7/10
CPCH04B1/7073H04B1/70735H04L7/041H04L7/10H04L27/2656H04L27/2673H04W56/00H04W56/003
Inventor 张永光翟绪论
Owner 36TH RES INST OF CETC
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