A pseudo code synchronization method and a pseudo code synchronization device for non-uniform spread spectrum

A pseudo-code synchronization and non-uniform technology, applied in the field of communication, can solve the problems of the pseudo-code tracking loop not working normally, the number of BITs being uncertain, etc., to achieve the effect of resource saving and stable processing

Inactive Publication Date: 2019-05-10
BEIJING RINFON TECH CO LTD
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Problems solved by technology

For non-uniform spread spectrum, for example, one symbol corresponds to multiple BITs, and the number of BITs is uncertain, for example, one spreading code corresponds to 3.345 BITs, at this time, the traditional pseudo-code tracking loop cannot work normally

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[0040] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0041] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which this invention belongs. It should also be understood that terms, such as those defined in commonly used dictionaries, should be understood to have meanings consistent with the meanings in the co...

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Abstract

The invention relates to the technical field of communication, in particular to a pseudo code synchronization method and a pseudo code synchronization device for non-uniform spread spectrum. The method comprises the following steps: searching and capturing signals according to the length of a half bit; Comparing the current spread spectrum code half-bit amplitude with a capture threshold, and entering a tracking state if the current spread spectrum code half-bit amplitude is greater than the capture threshold; carrying out Coherent accumulation in a half bit, and carrying out incoherent accumulation in a preset bit period, so that an optimal sampling point is obtained to adjust a code phase, and a signal received by a receiving end and a signal sent by a sending end are synchronized. According to the method, the half-bit search code loop is adopted, large interference can be resisted, stable code loop tracking can be carried out under the condition of low noise, and the method has theadvantages of saving resources and being stable in processing.

Description

technical field [0001] The invention relates to the field of communication technology, in particular to a non-uniform spread spectrum pseudo-code synchronization method and a pseudo-code synchronization device. Background technique [0002] The mechanism of direct spread communication is that the sender modulates the data information to the required frequency band for transmission through corresponding processing, and the receiver extracts the original data information through corresponding inverse processing. However, for the receiver, the key to extracting or recovering valid data information is to solve the uncertainty caused by the man-made environment, and the process of solving this uncertainty is called "synchronization". The key point of synchronization is to require the signals at both ends of the system to be consistent in frequency and phase, so that information can be correctly demodulated. Its role is to keep the frequency and phase of the locally generated sig...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7073H04B1/7075H04B1/69
Inventor 熊军严峰斌童长海黄龙王冠
Owner BEIJING RINFON TECH CO LTD
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