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A ks-css modulation method

A technology of KS-CSS and modulation method is applied in the field of spread spectrum communication, which can solve the problems of low spectrum utilization rate and limited transmission rate, and achieve the effect of improving data transmission rate and frequency band utilization rate.

Active Publication Date: 2020-02-07
SHENYANG LIGONG UNIV
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Problems solved by technology

At present, the modulation methods commonly used in direct sequence spread spectrum communication mainly include BPSK, QPSK, BOC, etc. Although this series of modulation methods have obvious advantages in confidentiality and anti-interference ability, considering the limited transmission rate of the existing modulation mechanism, Therefore, the modulation mechanism capable of two-dimensional data information transmission has become a future development trend and new direction without introducing additional power and occupying additional frequency bands.

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  • A ks-css modulation method

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Embodiment Construction

[0025] A kind of KS-CSS modulation method is characterized in that, comprises the steps:

[0026] Step 1: First set the parameters, set R 1 is the one-dimensional information rate, R 2 is the basic rate of two-dimensional information, and the information cycle of one-dimensional and two-dimensional information is 1s; one-dimensional information D 1 (n) and two-dimensional information D 2 (n) to be transmitted.

[0027] Step 2: Do M 1 , M 2 Mode configuration, the configuration rule is: define M as the mode control coefficient group, by M[M 1 m 2 ] means, define M 1 is the selection parameter for adaptive or active mode, M 2 Selection parameter for Eco or Efficient mode in Active mode. e is the additional coefficient, which is the user-defined increment of the number of pseudo-code groups controlled by the user in the active high-efficiency mode. When M 1 = 0, it is adaptive mode, at this time M 2 and e have no effect; when M 2 = 1 is the active mode, at this time...

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Abstract

The invention discloses a KS-CSS modulation method, and belongs to the technical field of the spread spectrum communication. In consideration of the problem that a transmission rate of the existing modulation mechanism is limited and the spectrum utilization rate is low, the two-dimensional data information is imported in the premise of unchanging the one-dimension data spread-spectrum mechanism and the transmitting power from the composite dimension angle, the spread-spectrum pseudo code is selected through a data mapping mechanism, and the two-dimension data information transmission is realized at the same time; the modulation order k is flexibly configured by using the transmission relation of the one-dimension and the two-dimension, thereby establishing the K-order composite spread-spectrum modulation mechanism. Through the method disclosed by the invention, the spread-spectrum pseudo code is dynamically updated through a two-dimension data mapping mechanism, the confidentiality ofthe one-dimension data is improved, and the two-dimension data information transmission is performed without importing additional power and occupying the extra frequency band condition. Through the method disclosed by the invention, the data transmission rate and the frequency band use ratio are improved, the aim of hiding the communication can be achieved, and the method can be applied to all spread-spectrum communication systems.

Description

technical field [0001] The invention relates to the technical field of spread spectrum communication, in particular to a KS-CSS spread spectrum modulation method. Background technique [0002] With its advantages in confidentiality, anti-noise, anti-jamming, and high-precision measurement, direct sequence spread spectrum has gradually become an important support in the fields of mobile communication and satellite navigation. At present, the modulation methods commonly used in direct sequence spread spectrum communication mainly include BPSK, QPSK, BOC, etc. Although this series of modulation methods have obvious advantages in confidentiality and anti-interference ability, considering the limited transmission rate of the existing modulation mechanism, Therefore, without introducing additional power or occupying additional frequency bands, the modulation mechanism that can transmit two-dimensional data information has become a future development trend and new direction. Cont...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04B1/707H04L27/12
CPCH04B1/707H04L27/12
Inventor 冯永新刘芳周帆钱博
Owner SHENYANG LIGONG UNIV