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A satellite communication burst timing synchronization method

A timing synchronization and satellite communication technology, applied in the field of satellite wireless communication, can solve problems such as large timing errors, and achieve the effect of overcoming large synchronization errors

Active Publication Date: 2019-07-02
CHENGDU GUOHENG SPACE TECH ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the timing synchronization method using a voltage-controlled oscillator to control the sampling moment is not suitable for burst timing synchronization; the timing synchronization method based on autocorrelation processing has the disadvantage of large timing errors when there are few known unique codes

Method used

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  • A satellite communication burst timing synchronization method
  • A satellite communication burst timing synchronization method
  • A satellite communication burst timing synchronization method

Examples

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Embodiment 1

[0028] Such as figure 1 Shown, a kind of satellite communication burst timing synchronization method, comprising:

[0029] Step 1. Extract a complete burst signal according to the received signal sequence, and the burst signal is a multiple sampling signal.

[0030] Extracting a complete burst signal according to the received signal sequence, including: performing first-level timing synchronization processing on the received signal sequence to obtain the position of the burst signal in the received signal sequence; buffering the received signal sequence; The position in the received signal sequence extracts the complete burst signal from the buffered received signal sequence.

[0031] Preferably, performing the first-level timing synchronization processing on the received signal sequence and buffering the received signal sequence are performed simultaneously.

[0032] Preferably, performing the first-level timing synchronization processing on the received signal sequence is ...

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Abstract

The invention discloses a burst timing synchronization method for satellite communication. The method comprises the steps of 1, extracting a complete burst signal from a received signal sequence, specifically including performing first-stage timing synchronization treatment on the received signal sequence, acquiring the location of the burst signal in the received signal sequence, caching the received signal sequence, and extracting the complete burst signal from the cached received signal sequence according to the location of the burst signal in the received signal sequence; and 2, extracting the best sampling sequence of the burst signal according to the burst signal, specifically including performing second-stage timing synchronization treatment on the burst signal, acquiring the best sampling point of the burst signal, caching the burst signal, and extracting the best sampling sequence of the burst signal from the burst signal according to the best sampling point of the burst signal. According to the method, the best sampling position with less unique word burst can be accurately located.

Description

technical field [0001] The invention relates to the technical field of satellite wireless communication, in particular to a satellite communication burst timing synchronization method. Background technique [0002] Time Division Multiple Access (TDMA) satellite communication system uses burst mode communication. A known unique code field is included in the burst for synchronization at the receiving end. It is known that the more unique code fields, the better the synchronization performance of the receiving end, but the lower the data transmission efficiency. Due to the extremely precious satellite bandwidth resources used in satellite communications, in time-division multiple access satellite communication systems, bursts containing more unique codes are usually used for network-wide synchronization, and bursts containing fewer unique codes are used for transmission services data or system information. [0003] The burst timing synchronization technology is a technology ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B7/212
CPCH04B7/2125
Inventor 朱南吴东海赵深林邹刚姜彬丁伟
Owner CHENGDU GUOHENG SPACE TECH ENG CO LTD
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