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Method and device for generating aperiodic long-code spreading code, equipment and storage medium

A spreading code and non-periodic technology, applied in the fields of devices, methods for generating non-periodic long-code spreading codes, equipment and storage media, can solve the problem of high algorithm complexity, inability to take into account m-sequence and Gold sequence, non-periodic long Problems such as phase ambiguity of code spread spectrum code

Active Publication Date: 2021-05-07
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0005] The present invention provides a method, device, device and storage medium for generating an aperiodic long code spread spectrum code, which are used to solve the phase ambiguity and high algorithm complexity in the application process of the aperiodic long code spread spectrum code in the prior art , It is impossible to take into account the defects of m-sequence and Gold sequence, realize the generation of aperiodic long-code spreading code with variable initial phase, and effectively avoid the interference of illegal users

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[0031]In order to make the objects, technical solutions, and advantages of the present invention, the technical solutions in the present invention will be described in connection with the drawings of the present invention, and it will be described, and , Not all of the embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art will belong to the scope of the present invention without all other embodiments obtained without creative labor.

[0032]It will be understood that "Examples" or "One Example" mentioned in the specification means that specific features, structures, or characteristics related to the embodiments are included in at least one embodiment of the invention. Therefore, the "embodiment" or "in one embodiment" in each of the specification is not necessarily referred to as the same embodiment. In addition, these specific features, structures, or characteristics can be incorporated in one or more embodiments any suitable manner.

[0033]I...

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Abstract

The invention provides a method and device for generating an aperiodic long-code spreading code, equipment and storage medium, and a storage medium. The method comprises the following steps: determining a primitive polynomial and an initial phase of a local short-period spreading code according to a PRN number, a weekly count and an intra-weekly day count of a satellite; generating a period short code according to the primitive polynomial and the initial phase; capturing a burst frame according to the periodic short code, and performing frame synchronization; generating a first m sequence according to the primitive polynomial and the initial phase; processing the m1 sequence to obtain a decoding result of the user address; obtaining a second m sequence according to the primitive polynomial and the decoding result of the user address; and generating a spreading code of the data segment according to the m1 sequence and the m2 sequence. According to the invention, the aperiodic long-code spreading code with the variable initial phase can be generated, and the interference of illegal users is effectively avoided.

Description

Technical field[0001]The present invention relates to the field of communication technologies, and more particularly to a method, apparatus, device, and storage medium of a non-cyclical long code spreading code.Background technique[0002]In the "Beidou No. 3" global short message system, a new signal system is used, and the signal may receive an illegal user's interference in the process of transmission, so anti-interference is the problem that is not negligible in the short message system.[0003]The direct sequence spread spectrum signal has the advantages of strong anti-interference ability, good confidentiality, high communication rate, so spread spectrum is widely used as an important modulation technology.[0004]There is a phase blur in the application process for non-cyclical long code spreading codes, and the algorithm has a high complexity, and it is impossible to take care of the M-sequence and Gold sequence.Inventive content[0005]The present invention provides a method, appar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/707H04B1/7073H04B1/7097H04B7/185
CPCH04B1/707H04B1/7073H04B1/7097H04B7/18513
Inventor 安建平王帅蒙艳松张中英卜祥元邢成文
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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