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Tamed spread spectrum communication system based on fast Fourier transformation

A technology of Fourier transform and inverse Fourier transform, which is applied in the field of soft spread spectrum communication, can solve problems such as limiting anti-interference and confidentiality capabilities, increase confidentiality and reusability, break through the bottleneck of code length, and improve system performance. Effect

Active Publication Date: 2012-06-20
BEIJING INST OF CONTROL ENG
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Problems solved by technology

[0004] However, the code length of the spreading code used by the soft spreading technology is limited by hardware resources due to the number of correlators, thus limiting its anti-interference and confidentiality capabilities

Method used

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  • Tamed spread spectrum communication system based on fast Fourier transformation
  • Tamed spread spectrum communication system based on fast Fourier transformation

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Embodiment Construction

[0019] The present invention will be further introduced below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the present invention provides a kind of soft spread spectrum communication system based on fast Fourier transform, and it is made up of training sequence module, code phase mapping module, framing transmission module, acquisition module, tracking module, data interception module, fast inverse Fourier transform module, dot product module, fast Fourier transform module, data pseudocode transformation result extraction module and data demodulation module.

[0021] The transmitting end

[0022] The code phase mapping module maps the data code phase and the data to be transmitted according to the data transmission rate to generate a data sequence. The mapping method can be: mapping of a set of data to a single code phase and mapping to multiple code phases, and the length of the code is a power of 2 and greater than 256.

[0023] The t...

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Abstract

The invention discloses a tamed spread spectrum communication system based on fast Fourier transformation. The tamed spread spectrum communication system comprises a training sequence module, a code phase mapping module, a framing transmitting module, a capturing module, a tracking module, a data interception module, a fast inverse Fourier transformation module, a point multiplication module, a fast Fourier transformation module, a data pseudo code transformation result extraction module and a data demodulation module. By adoption of the tamed spread spectrum communication system, the code length of a spread spectrum code is not limited by the number of correlators, and anti-interference capacity and confidentiality are improved.

Description

technical field [0001] The invention relates to a soft spread spectrum communication method based on fast Fourier transform, which is mainly used in wireless communication occasions with high dynamics, anti-interference, high speed and high security. Background technique [0002] Soft spread spectrum technology (Tamed Spread Spectrum), also known as slow spread spectrum, is a new type of baseband spread spectrum technology developed from the combination of direct sequence spread spectrum technology and coding technology in recent years, and it is also a widely used technology in recent years. A spread spectrum technique. [0003] The soft spread spectrum system maps from the information space to the pseudo-random code space, so that not only the coding gain of the information can be obtained, but also the spreading gain can be obtained by spreading the information sequence; if a suitable mapping method is used, it can also be obtained Better system performance. Soft spread...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B1/7075H04B1/7085H04L25/02H04L27/26
Inventor 孙宇明段永顥赵鹏郭向英张金巍王青朱倩刘鹭航赵欢
Owner BEIJING INST OF CONTROL ENG
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