WO2014123451A1 - Procédé de modulation-démodulation intra-impulsions avec étalement de spectre direct - Google Patents

Procédé de modulation-démodulation intra-impulsions avec étalement de spectre direct Download PDF

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Publication number
WO2014123451A1
WO2014123451A1 PCT/RU2013/001049 RU2013001049W WO2014123451A1 WO 2014123451 A1 WO2014123451 A1 WO 2014123451A1 RU 2013001049 W RU2013001049 W RU 2013001049W WO 2014123451 A1 WO2014123451 A1 WO 2014123451A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
signal
pulse
noise
modulated
Prior art date
Application number
PCT/RU2013/001049
Other languages
English (en)
Russian (ru)
Inventor
Виктор Петрович ШИЛОВ
Original Assignee
Shilov Victor Petrovich
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Shilov Victor Petrovich filed Critical Shilov Victor Petrovich
Publication of WO2014123451A1 publication Critical patent/WO2014123451A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques

Definitions

  • the method of intrapulse modulation-demodulation with direct expansion of the spectrum The invention relates to methods of modulation-demodulation of discrete (digital) signals and can be used in electrical radio communications, location, telemetry, telephony and other fields.
  • noise-like envelope of pulsed signals which in this case are broadband signals (SHPS) or signals with a large base
  • the first is due to the impossibility of increasing the signal base to infinity
  • N (NoW) -MonraocTb noise in the channel bandwidth [W];
  • the physical reason for the existence of the Shannon boundary and the maximum minimum value of energy inefficiency is the complete or partial overlap (cross) of the spectra of useful and interfering (noise) signals when they are processed in the receiving part of the information transmission channel.
  • the present invention is to develop a method of modulation-demodulation of signals, allowing demodulation of a mixture of signal with noise, while eliminating the crossing of their spectra, to the extent that
  • the solution of the problem in relation to the stage of modulation sigala (synthesis sigala) is carried out by presenting information pulse signal with a pulse signal with an envelope, described by a function with a limited spectrum, having, at one or several of its intervals, oscillations with a frequency exceeding the cutoff frequency of the spectrum of the synthesized signal (frequency spikes) .
  • the parameters of these oscillations amplitude, frequency, phase , separately or in various combinations put in accordance with the informative sign of the signal a to be transmitted.
  • the solution of the problem at the receiving side when processing the received mixture of useful and interfering signals, is carried out in two stages. At the first stage, the signal mixture with noise is processed necessary for
  • the time-frequency processing of the signal mixture with noise in the frequency band corresponding to the elementary signal is performed, which is a gap containing a frequency surge.
  • This processing includes splitting the received signal mixture with noise into a series of elementary pulses with a duration equal to second duration with the interval frequency of ejection, with
  • the spectral diagram on the axes of the frequency-modulus of the spectral density which is the final result of the calculation, and which shows the pseudovectors of the spectra of all analyzed elementary pulse signals within the duration of the modulated signal a, shown in Fig.
  • rfle positions (8,9,10) denote the pseudovectors of the spectra of elementary pulse signals partially overlapping with the gap containing the frequency spike, and the position (11) marks the pseudovector of the elementary pulse, combined with the frequency ejection gap for sure.
  • the obtained result demonstrates the reliable separation of the gap with the frequency surge and,
  • R is the information transfer rate, [bit / s],
  • the proposed method can find application in all areas of technology related to the use of discrete (digital) signals, while providing unique capabilities for the operation of information transmission channels deep under noise, with relatively high spectral efficiency, compared with known methods, with all the ensuing from this fact.
  • useful, ceteris paribus, properties such as increasing the transmission range of information, the possibility of reusing the frequency resource for in relation to narrowband signals, stealth of information transmission and a number of other useful properties.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Noise Elimination (AREA)

Abstract

L'invention concerne des procédés de réception et de transmission d'informations discrètes (numériques). Dans ce procédé et sur le côté émetteur, on utilise en qualité d'enveloppe de signal pulsé d'informations une fonction ayant un spectre limité et possédant sur un ou plusieurs intervalles dans l'impulsions des oscillations dont la fréquence dépasse la fréquence limite du spectre de l'impulsion modulée dans son ensemble (rejet de fréquence); les valeurs des paramètres de ces oscillations sont établies en fonction d'un indice informatif du signal devant être envoyé; sur le côté récepteur, le mélange reçu de signal et de bruit, après traitement dans la bande de fréquences du signal pulsé modulé jusqu'au démodulateur, est divisé en signaux pulsés élémentaires dont la longueur est égale à la longueur de l'intervalle avec rejet de fréquence qui sont soumis à un traitement de filtrage de fréquence ou spectral dans une plage de fréquences déterminée par l'intervalle avec rejet de fréquence en divisant cet intervalle (ces intervalles) après quoi, en analysant les paramètres d'oscillations avec rejet de fréquence, on apporte une solution concernant la valeur de l'indice informatif dans le signal modulé reçu.
PCT/RU2013/001049 2013-05-23 2013-11-19 Procédé de modulation-démodulation intra-impulsions avec étalement de spectre direct WO2014123451A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
RU2013123683/08A RU2528085C1 (ru) 2013-05-23 2013-05-23 Способ внутриимпульсной модуляции-демодуляции с прямым расширением спектра
RU2013123683 2013-05-23

Publications (1)

Publication Number Publication Date
WO2014123451A1 true WO2014123451A1 (fr) 2014-08-14

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PCT/RU2013/001049 WO2014123451A1 (fr) 2013-05-23 2013-11-19 Procédé de modulation-démodulation intra-impulsions avec étalement de spectre direct

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RU (1) RU2528085C1 (fr)
WO (1) WO2014123451A1 (fr)

Cited By (1)

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CN110263711A (zh) * 2019-06-20 2019-09-20 中国工程物理研究院总体工程研究所 一种基于改进谱峭度的耦合信号冲击特征提取方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2652434C2 (ru) * 2016-10-03 2018-04-26 Виктор Петрович Шилов Способ приемопередачи дискретных информационных сигналов
RU2668712C1 (ru) * 2017-12-05 2018-10-02 Виктор Петрович Шилов Способ демодуляции дискретных сигналов в постшенноновском канале
RU2715289C1 (ru) * 2019-06-28 2020-02-26 Виктор Петрович Шилов Способ обработки сигнально-шумовой смеси в постшенноновских каналах

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RU2007763C1 (ru) * 1991-04-04 1994-02-15 Завод "Калугаприбор" Способ выделения основного тона из речевого сигнала
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DE69623115T2 (de) * 1995-05-08 2003-05-08 Massachusetts Inst Technology System zum kontaktlosen abtasten und signalisierung mit menschlichem körper als signalübertragungsmedium
US6005887A (en) * 1996-11-14 1999-12-21 Ericcsson, Inc. Despreading of direct sequence spread spectrum communications signals
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RU2007763C1 (ru) * 1991-04-04 1994-02-15 Завод "Калугаприбор" Способ выделения основного тона из речевого сигнала
RU2264034C1 (ru) * 2004-04-01 2005-11-10 Государственное Унитарное Предприятие "Водоканал Санкт-Петербурга" Региональная информационная система связи

Non-Patent Citations (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110263711A (zh) * 2019-06-20 2019-09-20 中国工程物理研究院总体工程研究所 一种基于改进谱峭度的耦合信号冲击特征提取方法
CN110263711B (zh) * 2019-06-20 2023-01-17 中国工程物理研究院总体工程研究所 一种基于改进谱峭度的耦合信号冲击特征提取方法

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