A Spread Spectrum Synchronization Method and Device Based on Adaptive Threshold

An adaptive threshold and adaptive gate technology, applied in the field of spread spectrum communication, can solve the problems of low synchronization accuracy and many false alarms, and achieve the effect of eliminating false alarms and precise system synchronization

Active Publication Date: 2017-11-28
SICHUAN JIUZHOU ELECTRIC GROUP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] One of the objectives of the present invention is to provide a spread spectrum synchronization method and device based on an adaptive threshold to solve the technical problems of many false alarms and low synchronization accuracy in the existing spread spectrum synchronization method

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  • A Spread Spectrum Synchronization Method and Device Based on Adaptive Threshold
  • A Spread Spectrum Synchronization Method and Device Based on Adaptive Threshold

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Embodiment Construction

[0053] The implementation of the present invention will be described in detail below in conjunction with the accompanying drawings and examples, so as to fully understand and implement the process of how to apply technical means to solve technical problems and achieve technical effects in the present invention. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0054] Embodiments of the present invention provide a spread spectrum synchronization method based on an adaptive threshold, such as figure 1 As shown, the method includes: in step 101, performing statistics on a section of received signals within a clock cycle according to a local spread spectrum sequence to form a comparison decision value, and at the same time forming an adaptive threshold value based on a...

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Abstract

The invention discloses a spread spectrum synchronization method and device based on an adaptive threshold, and belongs to the technical field of spread spectrum communication. The existing spread spectrum synchronization method has the technical problems of many false alarms and low synchronization accuracy. The spread spectrum synchronization method based on the adaptive threshold includes: within the clock cycle, according to the local spread spectrum sequence, a segment of the received signal is counted to form a comparison decision value, and at the same time, an adaptive threshold value is formed based on the segment of the received signal; In the cycle, if the comparison judgment value formed by the middle clock cycle is greater than the comparison judgment value formed by other clock cycles, and the comparison judgment values ​​formed by the middle clock cycle and its two adjacent clock cycles are respectively greater than The self-adaptive threshold value formed by the clock cycle determines that the received signal in the middle clock cycle is synchronous with the local spread spectrum sequence.

Description

technical field [0001] The invention relates to the technical field of spread spectrum communication, in particular to a spread spectrum synchronization method and device based on an adaptive threshold. Background technique [0002] During data communication, the receiver must have precise synchronization in order to accurately recover the transmitted data. For burst data communication, the information transmission is discontinuous, so it is difficult to achieve synchronization through the feedback loop. The usual solution is to use spread spectrum technology to insert a set of spread spectrum sequences before the transmitted data frame as a system Synchronize. The receiving end forms a judgment quantity by performing correlation statistics calculation on the spread spectrum sequence, and judges a position exceeding a threshold in the judgment quantity as a synchronous position. [0003] In a wireless communication system, the received signal will be affected by the wirele...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/7073
Inventor 何韬
Owner SICHUAN JIUZHOU ELECTRIC GROUP
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