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Multi-dimension hybrid spread spectrum system and method based on high speed bus and graphic processing unit (GPU)

A high-speed bus and hybrid spread spectrum technology, applied in the field of communication, can solve the problems of weak anti-multipath ability, increase the spread spectrum sequence, and interfere with other users, and achieve low delay, high dynamic range, and high frequency hopping rate. Effect

Inactive Publication Date: 2013-10-30
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Abstract
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AI Technical Summary

Problems solved by technology

The frequency hopping system has a strong ability to resist multiple types of interference such as pulses, but the anti-multipath ability is weaker than that of the direct spread system
At the same time, since the frequency hopping signal is essentially a narrowband modulated signal with a high power spectrum, it is easy to interfere with other users when the hopping speed is low, but it is also easy to be detected and intercepted
In order to achieve strong anti-interference ability in direct spread system, the length of spread spectrum sequence must be increased, which greatly reduces the transmission rate of modulated data, which is contradictory

Method used

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  • Multi-dimension hybrid spread spectrum system and method based on high speed bus and graphic processing unit (GPU)
  • Multi-dimension hybrid spread spectrum system and method based on high speed bus and graphic processing unit (GPU)
  • Multi-dimension hybrid spread spectrum system and method based on high speed bus and graphic processing unit (GPU)

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Embodiment 1

[0053] see figure 1 , The present invention provides a multi-dimensional hybrid spread spectrum system based on a high-speed bus and GPU, the system includes a sending unit, a GPU unit, a receiving unit and a data master control unit. Among them, the sending unit includes "transmitting antenna", "transmitting radio frequency module" and "low intermediate frequency / baseband transmitting module"; the receiving unit includes "receiving antenna", "receiving radio frequency module" and "low intermediate frequency / baseband receiving module"; the data master The control and cache unit includes "main control / buffer and display" and "high-speed bus".

[0054] "Transmitting antenna" completes the transmission of multi-channel multi-dimensional mixed radio frequency analog signals;

[0055] The "transmitting radio frequency module" up-converts the multiple analog low intermediate frequency / baseband signals output by the "low intermediate frequency / baseband transmitting module" to multip...

Embodiment 2

[0067] The multi-dimensional hybrid spread spectrum method based on high-speed bus and GPU in this embodiment, the specific implementation process is:

[0068] Step 1: The sending unit, the GPU unit, and the data master control unit complete baseband processing such as source coding / interleaving / channel coding / space-time coding for the transmitted data symbols, and generate a multi-channel multi-dimensional hybrid spread spectrum tuned, spread, and skipped baseband data signal;

[0069] Step 2: The source symbol is generated in the "master control / buffer and display module" in the "data master control unit"; then the source symbol is serial-to-parallel converted to generate multiple parallel unprocessed baseband data symbols; each channel of mixed data After baseband transmission signal processing such as interleaving, channel coding, space-time coding, shaping, and framing, direct sequence spread spectrum and baseband frequency hopping modulation are performed respectively to...

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Abstract

The invention relates to a multi-dimension hybrid spread spectrum system and method based on a high speed bus and a graphic processing unit (GPU), belonging to the technical field of communication. The multi-dimension hybrid spread spectrum system comprises a transmitting unit, a GPU, a receiving unit and a data main control unit, wherein the transmitting unit comprises a transmitting antenna, a transmission radio-frequency module and a low and medium frequency / baseband transmitting module; the receiving unit comprises a receiving antenna, a reception radio-frequency module and a low and medium frequency / baseband receiving module; and the data main control unit comprises a high speed bus and a main control / buffer and display module. The invention adopts the technologies of multi-input and multi-output, space-time coding, parallel processing and high-speed transmission reception diversity, and combines a direct spread / frequency hopping hybrid technology, so that the overall system integrates the advantages of three dimensions of space, time and frequency, and the confidentiality and anti-jamming ability of the realized hybrid spread spectrum system are further greatly expanded; and very quick data transmission and quick code synchronization and code acquisition performance of the multi-dimension hybrid system are realized by the advantages of the high speed bus and GPU architecture.

Description

technical field [0001] The invention relates to a multi-dimensional hybrid spread spectrum system and method based on a high-speed bus and a GPU, belonging to the technical field of communication. Background technique [0002] Today, with the rapid development of communication, the electromagnetic environment is becoming more and more complex, and the requirements for the anti-interference ability of communication systems are also getting higher and higher. The complex communication environment requires a new architecture system, so the design and implementation of a communication system with strong survivability and minimum communication guarantee has become the top priority of today's research. [0003] The direct spread system is conducive to the concealment of the signal, and has strong anti-jamming, confidentiality and anti-multipath capabilities. The frequency hopping system has a strong ability to resist multiple types of interference such as pulses, but the anti-mul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/692
Inventor 卢继华安建平周荣花李祥明
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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