A kind of scrambling signal generation method

A technology of signal generation and signal transmission, which is applied in the field of communication, can solve the problems of interference diversity in the unfavorable time domain, the inability to distinguish interference, and the inability to effectively suppress interference, so as to achieve randomization and improve anti-interference performance.

Active Publication Date: 2021-10-29
SOUTHEAST UNIV
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Problems solved by technology

[0003] Technical problem: The purpose of the present invention is to solve the problem that the scrambling signal used by the existing VDES is fixed, so that the receiver cannot distinguish the useful signal from the interference between cells and channels, and thus cannot effectively suppress the interference ; At the same time, the scrambling signal does not change with time, which is not conducive to interference diversity in the time domain and affects the anti-jamming performance of the receiver

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  • A kind of scrambling signal generation method
  • A kind of scrambling signal generation method
  • A kind of scrambling signal generation method

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings.

[0024] First of all, some terms used in this application are explained to facilitate the understanding of those skilled in the art.

[0025] 1) A communication station, also called a communication device, may be a mobile station (Mobile Station) or a control station (Control Station). A mobile station, also known as a mobile terminal (Mobile Terminal, MT), user equipment (User Equipment, UE), etc., is a device that can communicate with the network through a control station to provide users with data connectivity, such as a wireless sensor (Sensor ), ships at sea, buoys (Buoy), search and rescue (SAR, Search and Rescue) transponders, etc. The control station is also called a base station (Base Station), network equipment, including shore station (ShoreStation), satellite (Satellite), space station (Space Station), etc., and is a wireless access poin...

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Abstract

A method for generating a scrambling signal. The communication station first determines the initial value of the M-bit PN sequence generator and the M-bit mask, and then performs a modulo-2 inner product operation on the M-bit mask and the M state vectors of the PN sequence generator. The first sequence is generated, and finally the first sequence is subjected to BPSK modulation to obtain a scrambled signal, and the transmitted signal is scrambled. Among them, the M-bit mask is determined by the cell control station identifier and the carrier frequency parameters used for signal transmission; the initial value of the M-bit PN sequence generator is determined by the frame unit number used for signal transmission and the frame unit number used for signal transmission. The slot unit number is determined. Through the technical solution of the present invention, different communication stations and communication spectrum channels can use different time-varying scrambling signals to scramble transmission signals, thereby realizing randomization and diversity of inter-signal interference, improving system anti-interference performance, and It can be applied to various wireless communication systems, such as the very high frequency data exchange system VDES.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, to a method for generating a scrambled signal. Background technique [0002] In order to ensure the reliability of communication, it is an important link to perform signal scrambling on the signal transmitted during the communication process. In some wireless communication systems, such as the VHF (Very High Frequency) data exchange system VDES (VHF Data Exchange System), there are currently public technical characteristic documents ITU-R M.2092-0 and IALA as the representative In the technical discussion document IALA G1139 of relevant organizations, the scrambling signal used is fixed, that is, the signal transmitted by the communication station is not proprietary, so that the receiver cannot combine the useful signal with the interference from inter-cell and inter-channel Therefore, the interference cannot be effectively suppressed; at the same time, the scrambled sign...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/10H04J11/00H04L27/18
CPCH04B1/10H04J11/005H04L27/18
Inventor 尤肖虎汪茂夏婷婷张菁菁
Owner SOUTHEAST UNIV
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