Communication method of fast frequency hopping multi-transmitting and multi-receiving system based on high-speed bus and GPU (Graphic Processing Unit)

A high-speed bus and system communication technology, applied in the field of communication, can solve the problems of inability to achieve space diversity and low spectrum utilization, and achieve the effects of improving frequency band utilization, reducing frequency band interference, and reducing costs

Inactive Publication Date: 2011-06-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to improve the existing frequency hopping technology can not achieve space diversity, low frequency spectrum utilization, to provide a fast jump based on high-speed bus and GPU Multiple Frequency Multiple Receive (MIMO) system communication method to achieve higher diversity and higher spectrum utilization, which can increase the order of diversity, overcome channel fading and improve system reliability

Method used

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  • Communication method of fast frequency hopping multi-transmitting and multi-receiving system based on high-speed bus and GPU (Graphic Processing Unit)
  • Communication method of fast frequency hopping multi-transmitting and multi-receiving system based on high-speed bus and GPU (Graphic Processing Unit)
  • Communication method of fast frequency hopping multi-transmitting and multi-receiving system based on high-speed bus and GPU (Graphic Processing Unit)

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Embodiment Construction

[0028] In order to make the system structure, technology used and innovative features of the present invention easier to understand, the present invention will be further described below in conjunction with the accompanying drawings and embodiments. In this embodiment, a fast frequency hopping system with 4 hops per symbol is taken as an example by adopting PSK modulation, dual transmitting antennas and dual receiving antennas.

[0029] Modulation method parameter setting:

[0030] In this embodiment, 4FSK is used as the modulation mode, and the data bit period is set to 0.001 second, then the corresponding MFSK code symbol period is 0.002. The center frequency of the MFSK signal carrier frequency is set to 50000 Hz, and the frequency interval of a single carrier frequency is set to fs=1 / Ts=500 Hz.

[0031] Fast frequency hopping parameter settings:

[0032] Frequency hopping is performed four times in each symbol period, and the number of frequency hopping frequencies is se...

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Abstract

The invention relates to a communication method of a fast frequency hopping multi-transmitting and multi-receiving system based on a high-speed bus and a GPU (Graphic Processing Unit), which belongs to the technical field of communication. The invention integrates a multi-transmitting and multi-receiving transmission and receiving diversity technology with a fast frequency hopping technology. A parallel processing technology is adopted at a receiving end, and the time needed for synchronizing frequency-hopping signals at the receiving end is greatly shortened by introducing an efficient synchronous algorithm and a pseudo code technology and by adopting the high speed bus and the GPU. Under the adopted design rule of frequency-hopping patterns, signals of a plurality of frequency-hopping patterns can be simultaneously tracked by using a mixer, thereby reducing the cost of the receiving end. A transmitting end launches a plurality of signals using different frequency-hopping patterns simultaneously, and transmitted information can be correctly obtained by synchronizing the multi-path signals simultaneously, therefore, the capturing difficulty and the confidentiality of the signals are improved.

Description

technical field [0001] The invention relates to a communication method for a fast frequency-hopping multi-transmit and multi-receive system based on a high-speed bus and a GPU, and belongs to the technical field of communication. Background technique [0002] Frequency hopping technology is a commonly used spread spectrum technology today. In frequency hopping communication, both the transceiver and the transmitter discretely change the carrier of the transmitted signal according to a predetermined rule. Frequency hopping technology has excellent anti-jamming performance, and has become one of the cores of military anti-jamming communication technology. According to the relationship between frequency hopping rate and symbol rate, frequency hopping technology can be further divided into slow frequency hopping technology and fast frequency hopping technology. Slow frequency hopping (SFH) means that the frequency hopping rate is lower than the symbol rate, that is, multiple s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/04H04B1/713
Inventor 卢继华周荣花李祥明樊芳芳黎悟渊
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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