System for transmission of quad-encoded radio signals

FIELD: communication engineering, possible use for engineering and production of synchronous and asynchronous communication systems as system for transferring discontinuous information, in communication channels with unstable parameters and leaping frequency readjustment under effect from intentional pulse interference.

SUBSTANCE: system consists of transmitter portion, which has clock pulse generator, Different-code generator, generator of double frequency manipulation signals, modulator, frequencies synthesizer, pseudo-random numbers generator, connected via broadcast pipe to receipt portion, which has demodulator, frequencies synthesizer, pseudo-random numbers generator, signals selector, clock pulse generator, block for selecting additional series, first and second two-channeled synchronized filters, first and second subtracter, interference compensator and resolving block.

EFFECT: higher resistance to interference and trustworthiness under effect from intentional pulse interference in communication channels with random parameters of signal for systems with code compression of signals and systems with multiple access.

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The invention relates to communication technology and can be used in synchronous and asynchronous communication systems for the transmission of discrete information and synchronization using the propagation of electromagnetic waves in communication channels with pseudorandom change the operating frequency (frequency hopping) and unstable signal parameters (phase, amplitude and polarization) meter and decameter of wavelengths when exposed to intentional impulse noise in a sequence of discrete pulses.

Transfer system known Quaternary-coded radio signals by the RF patent №2188516, IPC7H 04 L 27/26, Appl. 21.05.01, publ. 27.08.02, bull. No. 24, consists of a transmitting part which contains the clock, driver D-codes, shaper signals of two frequency-shift keying, connected through tract distribution to the receiving portion, which contains a selector signal, the block allocation of additional sequences, two-channel coherent filter, myCitadel and decisive block, similar to the proposed system. In the known system used for transmission of the Quaternary-coded sequences twice the frequency manipulation.

The disadvantages of such a transmission system Quaternary-coded radio signals is low immunity while in the deistvii intentional impulse noise in a sequence of discrete pulses and the relatively low accuracy in the radio channel with random parameters of the signal (phase amplitude and polarization) meter and decameter of wavelengths, which limits the area of application of this system.

Transfer system known Quaternary-coded radio signals, described in the article by Roland Wilson and John Richter "Generation and Performance of Quadraphase Welti Codes for Radar and Synchronization of Coherent and Differentially Coherent PSK" (IEEE Transactions on Communications, vol. COM-27, No. 9, September 1979, p.1296-1301), consists of the transferor, which contains the clock, driver D-codes, a phase modulator, a frequency generator, a switch and a phase shifter connected through the communication channel with the reception side, which contains the phase demodulators, filters lower frequencies, consistent filter Welty, myCitadel, crucial unit, similar to the proposed system. In the known system used for transmission of the Quaternary-coded sequences relative phase manipulation.

The disadvantages of such a transmission system Quaternary-coded radio signals are low immunity when exposed to intentional impulse noise in a sequence of discrete pulses and the relatively low accuracy in the radio channel with random parameters of the signal (phase, amplitude and polarization) meter and decameter of wavelengths, which limits the scope of this systems is.

The closest in technical essence and function to the declared transmission system Quaternary-coded radio signal, analogue (prototype)is the system transfer Quaternary-coded radio signals, see, patent RF №2208915, IPC7H 04 L 3/00, Appl. 24.11.02, publ. 20.07.03, bull. No. 20. Known system, as proposed transmission system, includes transmitting part, consisting of a clock pulse shaper D-codes, shaper signals of two frequency-shift keying, modulator, frequency synthesizer, a random number generator, tract distribution, the receiving part consists of a demodulator, frequency synthesizer, a random number generator, the selector signal generator of clock pulses, the block allocation of additional sequences, the channel matched filter, myCitadel and a casting unit, similar to the proposed system.

In this known transmission system Quaternary-coded radio signals, as proposed transmission system Quaternary-coded radio signal transmitting part comprises a generator of clock pulses, the output of which is connected to the input of the shaper D-codes, to the clock inputs of the driver signals of two frequency-shift keying, frequency synthesizer and the pseudo-random generator h the villages. In this case n control outputs of the pseudo-random number generator, where n≥2 - an integer that is connected to the corresponding n control inputs of the frequency synthesizer, the output of which is connected to the modulation input of the modulator. The output of shaper D-codes connected to the information input of the shaper signals of two frequency-shift keying, the output of which is connected to the information input of the modulator. The output of the modulator is the output of the transmitting part of the system and is connected through tract distribution to the input of the receiving part of the system. Receiving portion of the system includes a demodulator, an information input which is the input receiving part of the system clock generator pulses, the output of which is connected to the clock inputs of the frequency synthesizer and the pseudo-random number generator, n-control output which is connected to the corresponding n control inputs of the frequency synthesizer. The output of the frequency synthesizer is connected to the modulating input of the demodulator. The output of the demodulator is connected to the selector signal, the first, second, third and fourth information, the outputs of which are connected respectively to the first, second, third and fourth information input unit allocation of additional sequences, the first and second information outputs of which are connected respectively to the first utorogu information inputs dual channel matched filter, the first and second information outputs of which are connected respectively to the first and second information inputs myCitadel, the deciding unit whose output is the output of the receiving part of the system.

Transmission system the Quaternary-coded radio signals prototype uses to transmit the Quaternary-coded sequence twice the frequency manipulation with frequency hopping, where the odd-numbered elements of the Quaternary-coded sequence is transmitted at frequencies f3+fPoftor f4+fPoftand even elements in the Quaternary-coded sequence is transmitted at frequencies f1+fPoftor f2+fPofti.e. the nominal frequency determines the number of additional sequences in the Quaternary-coded radio signal.

The disadvantage of this transmission system Quaternary-coded radio signals is low immunity when exposed to intentional impulse noise in a sequence of discrete pulses in the radio channel with random parameters of the signal (phase, amplitude and polarization) meter and decameter of wavelengths, which limits the area of application of this system. This is due to the fact that the system is in the process of convolution sums Quaternary-coded signal and the impulse noise in the form of the placenta the successive discrete pulses are not fully decorrelated interference, resulting in increased probability of erroneous reception of the folded Quaternary-coded sequence.

The objective of the invention is to develop a transmission system Quaternary-coded radio signals, ensuring the achievement of the technical result consists in expanding the field of application due to the selection and compensation of intentional impulse noise with the use of orthogonal code on the Quaternary structure-encoded sequences with frequency hopping, increase noise immunity and reliability in communication channels with random parameters of the signal (phase, amplitude and polarization) meter and decameter of wavelengths without expanding the frequency resource and bandwidth reduction system, and allows for synchronous and asynchronous communication systems in the transmission of discrete data and synchronization.

Transmission system the Quaternary-coded radio signal contains the transmit side clock generator pulses, the output of which is connected to the input of the shaper D-codes, to the clock inputs of the driver signals of two frequency-shift keying, frequency synthesizer and a random number generator. In this case n control outputs of the pseudo-random number generator, where n≥2 - an integer that is connected to the corresponding n-opravlyaushi the inputs of the frequency synthesizer, the output of which is connected to the modulation input of the modulator. The output of shaper D-codes connected to the information input of the shaper signals of two frequency-shift keying, the output of which is connected to the information input of the modulator. The output of the modulator is the output of the transmitting part of the system and is connected through tract distribution to the input of the receiving part of the system. Receiving portion of the system includes a demodulator, an information input which is the input receiving part of the system clock generator pulses, the output of which is connected to the clock inputs of the frequency synthesizer and the pseudo-random number generator, n-control output which is connected to the corresponding n control inputs of the frequency synthesizer. The output of the frequency synthesizer is connected to the modulating input of the demodulator. The output of the demodulator is connected to the selector signal, the first, second, third and fourth information, the outputs of which are connected respectively to the first, second, third and fourth information input unit allocation of additional sequences, the first and second information outputs of which are connected respectively to the first and second information inputs of the first channel matched filter, the first and second information outputs of which are connected respectively to pen the WMD and second information inputs of the first myCitadel, crucial unit whose output is the output of the receiving part of the system.

The technical result in the implementation of the invention is improving the noise immunity and reliability when exposed to intentional impulse noise in a sequence of discrete pulses is achieved by introducing into the receiving part of the system of the second dual channel matched filter, the second vicites and interference canceller. While the first and second information outputs of the block allocation of additional sequences are also connected respectively to the first and second information input of the second dual channel matched filter, the first and second information outputs of which are connected respectively to the first and second information inputs of the second myCitadel, and the outputs of the first and second vicites connected respectively to the first and second information inputs of the interference canceller, the output of which is connected to the input of the decision making unit.

The interference canceller comprises first and second critical block, the first and second modulator and myCitadel, the data input of the first modulator and the input of the first casting of the block are connected together and are the first information input of the interference canceller, and an information input of the second modulator and the input of the second casting biocardkey together and are the second information input of the interference canceller, the output of the first final unit connected to the control input of the first modulator and the output of the second deciding unit connected to the control input of the second modulator, the outputs of the first and second modulators are connected respectively to the first and second information inputs vicites whose output is the output of the interference canceller.

With the introduction of the second dual channel matched filter, the second vicites and interference canceller is implemented, the condition of orthogonality in the code the Quaternary structure-encoded sequences (E-codes, codes Welty) and the operation of convolution of the Quaternary-coded information sequences as the implementation of intercorrelation functions (MCFs). This MCFs without regard to impulse noise is equal to zero (UFF=000000000000000 N=8). The condition of orthogonality in the code the Quaternary structure-encoded sequences allows the second channel matched filter and the second vicites to allocate (implementation MCFs), and then the interference compensator to compensate for pulse interference (implementation summation ACF and MCFs).

Conducted by the applicant's analysis of the prior art, including searching by the patent and scientific and technical information sources, and identify sources that contain information about the equivalents of the claimed invention, has allowed to establish that the applicant had not discovered similar, characterized by signs, identical with all the essential features of the claimed invention. Select from a list of identified unique prototype as the most similar essential features of the analog revealed the essential towards perceived by the applicant to the technical result of the distinctive features in the claimed device, set forth in the claims. Therefore, the claimed invention meets the criterion of "novelty".

To check compliance with the claimed invention, the criterion of "inventive step", the applicant conducted an additional search of the known solutions to identify signs that match the distinctive features of the prototype of the characteristics of the claimed device. The search results showed that the claimed invention not apparent to the expert in the obvious way from the prior art, as defined by the applicant. Not identified the impact of changes under the essential features of the claimed invention, to achieve a technical result. In particular, the claimed invention does not provide the following transformations: addition of known means of any known part attached to it according to certain rules, for Costigan what I technical result in respect of which it is the effect of such additions, the replacement of any part of the other known means known part to achieve a technical result, in respect of which it is the effect of such a change; the exclusion of any part of the funds while the exclusion of its functions and the achievement of a result of such exclusion; an increase of similar elements to enhance the technical result due to the presence in the vehicle is of such elements; the execution of a known drug or part of a known material to achieve a technical result due to the known properties of the material; the creation of tools, consisting of well-known parts, the choice and the relationship between them is carried out on the basis of known rules, recommendations and achievable technical result is due only to the known properties of the parts of this object and the relationships between them; change quantitative attributes or relations of signs, if known fact of the influence of each on the technical result and the new values of the signs or their relationship could be obtained from the known dependencies. Therefore, the claimed invention meets the criterion of "inventive step".

Subramaniapuram graphics, showing: 1 - structural diagram of the transmission system the Quaternary-coded radio signals; figure 2 - block diagram of the interference canceller; figure 3 is a plot illustrating the principle of the formation of the Quaternary-coded radio signals; figure 4 is a plot illustrating the principle of generating additional sequences; 5 is a plot illustrating the principle of convolution additional sequences (without the impact of impulse noise in a sequence of discrete pulses); 6 is a plot illustrating the principle of the formation of additional sequences (when exposed to impulse noise in a sequence of discrete pulses); 7 - diagrams explaining the principle of convolution additional sequences (when exposed to impulse noise in a sequence of discrete pulses); Fig - diagrams explaining the principle of compensation impulse noise.

Information confirming the ability of the invention to provide the above technical result are as follows.

Transmission system the Quaternary-coded radio signals presented in figure 1, consists of a transmitting part and the receiving part. The transmitting part comprises a generator of clock pulses 1, the output of which is connected to the input of the shaper D-codes 2, to the clock inputs of the driver signal is Alov double frequency manipulation 3, frequency synthesizer 5 and pseudo-random number generator 6. In this case n-control output to the pseudo-random number generator 6, where n≥2 - an integer that is connected to the corresponding n control inputs of the frequency synthesizer 5, the output of which is connected to the modulation input of the modulator 4. The output of shaper D codes 2 connected to the information input of the shaper signal of twice the frequency manipulation 3, the output of which is connected to the information input of the modulator 4. The output of the modulator 4 is the output of the transmitting part of the system and is connected through tract distribution 7 to the input of the receiving part of the system. Receiving portion of the system includes a demodulator 8, the information input which is the input receiving part of the system. Clock 11, the output of which is connected to the clock inputs of the frequency synthesizer 9 and pseudo-random number generator 10, the n-control output which is connected to the corresponding n control inputs of the frequency synthesizer 9. The output of the frequency synthesizer 9 is connected to the modulating input of the demodulator 8. The output of the demodulator 8 is connected to the input of the selector signals 12, the first, second, third and fourth information, the outputs of which are respectively connected to the first, second, third and fourth information input unit allocation of additional sequences 13 First information output unit allocation of additional sequences 13 jointly connected to the first information input of the first 14.1 and 14.2 second channel matched filter. The second information output unit allocation of additional sequences 13 jointly connected to the second information input of the first 14.1 and 14.2 second channel matched filter. The first and second information outputs of the first channel matched filter 14.1 connected respectively to the first and second information inputs of the first vicites 15.1. The first and second information outputs of the second channel matched filter 14.2 connected respectively to the first and second information inputs of the second vicites 15.2. The outputs of the first 15.1 and 15.2 second of vicites connected respectively to the first and second information inputs of the interference compensator 16, the output of which is connected to the input of the decision making unit 17, the output of the decision making unit 17 is the output of the receiving part of the system.

Clocks 1 in the transmitting part and 11 receiving parts are identical and are designed to generate pulses of a certain duration with the required frequency fTG=B, where a is the speed of transmission of a sequence of elements of D code (cruising speed). They can be implemented, as described in the book Limportance, Utils, Scholae "Digital devices on integrated circuits in communication technology" (M.: Communication, 1979, p.72-76, RIS).

Driver D-codes 2 intended the Yong for forming a code sequence (D-code) with period N=2 kwhere k≥2 is an integer. It can be implemented as described in the ed. mon. No. 1177910 the USSR, IPC6H 03 M 5/00, Appl. 18.04.84, publ. 07.09.85, ed. mon. No. 1805550 the USSR, IPC6H 04 L 14/00, Appl. 07.02.91, publ. 30.03.93 or article Roland Wilson and John Richter "Generation and Performance of Quadraphase Welti Codes for Radar and Synchronization of Coherent and Differentially Coherent PSK" (IEEE Transactions on Communications, vol. COM-27, No. 9, September 1979, p.1296-1301, figure 1).

Shaper signals of two frequency-shift keying 3 is designed to form the Quaternary-coded signal. It can be implemented as described in the book Nelepov, Engelen, Opink "non-linear electronic device. Part 1" (M: Voenizdat, 1982, s-344, RIS).

The modulator 4 is designed for pseudo-random adjustment of the operating frequency within the allocated frequency resource Δf=fmax-fmin- fmaxwhere fmax- the maximum value of the selected frequency range; fmin- the minimum value of the selected frequency range. It can be implemented as described in the book Nelepov, Engelen, Opink "non-linear electronic device. Part 1" (M: Voenizdat, 1982, s-137, RIS).

Frequency synthesizers 5 in the transmitting part and 9 receiving parts are identical and are used to form the pseudo-random harmonic oscillations with a nominal frequency ΔfPoft=4lfTG, where l=1, 2,...,L, L=2n-1 is the maximum value of the pseudo-random number in decimal, n≥2 - number of managed inputs of the frequency synthesizer. They can be implemented, as described in the patent of Russian Federation №2208915, IPC7N 04 To 3/00, Appl. 04.11.02, publ. 20.07.03, bull. No. 20.

The pseudo-random number generator 6 in the transmitting part and 10 receiving parts are identical and are used to form the pseudo-random numbers l=1, 2, ..., L in binary, where the maximum pseudo-random number L depends on the allocated frequency resource Δf and is defined in decimal form by the following expressionwhere ΔFc=4B - effective width of the spectrum of the Quaternary-coded signal;- smaller integer. They can be implemented, as described in the book Utica, Klenk "Semiconductor circuit" (M.: Mir, 1982, s-359, RIS).

Tract distribution 7 is designed to distribute the Quaternary-coded signal. The basis of tract distribution is one or the other environment in which the signal propagates, for example, electrical connection is cable or waveguide, in communications systems - an area of space in which propagated electromagnetic wave.

The demodulator 8 is designed to eliminate pseudo-random re the three working frequencies within the allocated frequency resource. It can be implemented as described in the book Nelepov, Engelen, Opink "non-linear electronic device. Part 1" (M: Voenizdat, 1982, s-137, RIS).

The selector signal 12 is intended for breeding Quaternary-coded signal. It can be implemented as described in the patent of Russian Federation №2188516, IPC7H 04 L 27/26, Appl. 21.05.01, publ. 27.08.02, bull. No. 24.

Block allocation of additional sequences 13 is designed to highlight the first additional sequence of the odd elements of the quadruple-encoded sequence (highlighting elements α, βand allocating the second additional sequence of even-numbered elements of the quadruple-encoded sequence (highlighting elements γ, δ). It can be implemented as described in the patent of Russian Federation №2188516, IPC7H 04 L 27/26, Appl. 21.05.01, publ. 27.08.02, bull. No. 24.

Dual agreed filters 14.1-14.2 designed for convolution additional sequences to the duration of one element of the Quaternary-coded sequence. They can be implemented, as described in the ed. mon. The USSR №1721837, IPC6H 04 L 27/26, Appl. 08.01.90, publ. 23.03.92.

MyCitadel 15.1-15.2 and 16.5 designed for subtracting negative pulse voltage applied to its second input of the positive pulse voltage is tion, arriving at his first entrance. They can be implemented, as described in the book Utica, Klenk "Semiconductor circuit" (M.: Mir, 1982, p.137-138, RIS).

The interference canceller 16, scheme is presented in figure 2, is designed to compensate for intentional impulse noise in a sequence of discrete pulses. It consists of the first and second deciding unit 16.1-16.2, first and second modulator 16.3-16.4 and myCitadel 16.5. The information input of the first modulator 16.3 and the input of the first deciding unit 16.1 connected together and are the first information input of the interference canceller 16. The information input of the second modulator 16.4 and the input of the second deciding unit 16.2 connected together and are the second information input of the interference canceller 16. The output of the first final unit 16.1 connected to the control input of the first modulator 16.3, and the output of the second deciding unit 16.2 connected to the control input of the second modulator 16.4. The outputs of the first and 16.3 of the second 16.4 modulators connected respectively to the first and second information inputs vicites 16.5 whose output is the output of the interference canceller 16.

Crucial blocks 16.1-16.2 and 17 are intended for the decision of the transmitted Quaternary-coded sequence. They can be implemented on the basis of the comparator, as described in the books is Utica, Klenk "Semiconductor circuit" (M.: Mir, 1982, p.76-77, RIS).

Modulators 16.3-16.4 designed to invert the negative minimized pulse amount of the Quaternary-coded sequence and decorrelating interference. Their scheme is known and described in the patent of the Russian Federation No. 2014738, IPC 5 H 04 J 11/00, 10/00, Appl. 18.02.1991, publ. 15.06.1994, 3 or ed. mon. The USSR №1721837, IPC 5 H 04 L 27/26, Appl. 08.01.90, publ. 23.03.92, 1.

Transmission system the Quaternary-coded radio signals presented in figure 1, works as follows.

When the system is switched on in the transmit side clock 1 frequency fTGgenerates a sequence of clock pulses with a duty cycle equal to two, presented on the plots figa. Each element of this sequence with a high level of "1" will be considered odd, and with a low level "0" is even. The sequence of clock pulses (figa) with clock pulses 1 are simultaneously fed to the clock inputs of the driver signal of twice the frequency manipulation 3, the frequency synthesizer 6 and the pseudo-random number generator 7 and to the input of the shaper D-codes 2.

The former D-codes 2 to clock pulses (figa) is formed and driven by the implementation of the underlying Quaternary-coded sequence with period N=2k/sup> (where N is the number of elements in the Quaternary-coded sequence; k≥2 is an integer). Thus the autocorrelation function (ACF) of the Quaternary-coded sequence has a pulse character without lateral emission (UACF=000000080000000 N=8).

For example, when N=K=8 (where K is the number of Quaternary-coded sequences (D-codes)) of the total number of Quaternary-coded sequences (D-codes) are presented in the form of a matrix

As an example, on plots figb shown driven by implementation of the following Quaternary-coded sequence αγαδαγβγformed in the shaper D-code 2 when the number of elements N=8. Formed in the Quaternary-coded sequences have the following elements: α, β, γ, δwhere α, β transmit odd elements D-code, and γ, δ - even the elements of the D-code.

From the output of the shaper D codes 2 formed (figb) Quaternary-encoded sequence is supplied to the information input of the shaper signals of two frequency-shift keying 3. To the clock input of the shaper signals of two frequency-shift keying 3 receives a sequence of clock pulses (figa) with frequency fTGfrom the output of the clock 1.

Form is routine signals of two frequency-shift keying 3 quadruple-encoded sequence (figb) is converted into the Quaternary-coded signal. The change of high-frequency oscillations of the Quaternary-coded radio signals generated in the imaging unit signals twice, manipulation 3, can be described as presented in the table:

Table
The elements of the Quaternary-coded sequenceClock input block 3 (block 1)The information input unit 3 (unit 2)The frequency of the Quaternary-coded signal
δ00f1
γ01f2
β10f3
α11f4

where f1<f2<f3<f4or f1>f2>f3>f4; Δf1=|f1-f2| - the frequency dependence of the frequency channels Quaternary-coded signal; Δf2=|f2-f3|, Δf3=|f3-f4| - the frequency shift between the frequency channels Quaternary-coded signal; λf1=XB, Δf1=mB Δf1=zB; x=1, 2, ... is an integer, m=1, 2, ... is an integer, z=1, 2, ... - a is the number the factors that control the change of the frequency shift between the frequency channels Quaternary-coded signal.

Plot formed the quadruple-encoded signal presented on figv.

The Quaternary-coded signal generated in the imaging unit double frequency manipulation 3 (pigv), is supplied to the information input of the modulator 4.

To the clock input of the pseudo-random number generator 6 receives a sequence of clock pulses (figa) with frequency fTGwith the clock 1. In the pseudo-random number generator 6, the sequence of clock pulses (figa) is converted to a pseudo-random sequence, which is supplied to the n-control outputs pseudo-random number generator 6 with a time shift of one clock cycle at each output of the pseudo-random number generator 6 in binary form. The pseudo-random number generator 6 has a width L=2n-1 depending on the allocated frequency resource Δf.

A pseudo-random sequence in binary form with n control outputs, where n≥2 - number of outputs of the pseudorandom number generator 6, is supplied respectively to the n control inputs of the frequency synthesizer 5, where n≥2 - the number of inputs of the frequency synthesizer 5. To the clock input of frequency synthesizer 5 receives the follower is ity of clock pulses (figa) with frequency f TGfrom the output of the clock 1.

The generated pseudo-random harmonic oscillation with a par ΔfPoftis supplied to the modulating input of the modulator 4, which is the output of the transmitting part of the system. At the output of the modulator 4 when x=m=z=1 and Δf1=Δf2=Δf3formed Quaternary-coded signal with frequency hopping within the allocated frequency resource Δf according to the following rule:

where fn=fmin- frequency carrier wave signal; Ucthe amplitude of the signal.

The Quaternary-coded signal generated on the transmit side, come in tract distribution 7, the elements α, β, γ, δ Quaternary-coded signal fulfil the orthogonality condition on the frequency.

Through tract distribution 7, the Quaternary-coded signal is supplied to the information input of the demodulator 8, which is the input receiving part of the system.

Clock 11, the pseudo-random number generator 10 and the frequency synthesizer 9 of the receiving part of the system work and form a pseudo-random harmonic oscillation with a par ΔfPoftsimilarly, the transmission part of the system. Consequently, at the output when Nestor frequency 9 is formed pseudo-random harmonic oscillation with a par Δ fPoftthe second is fed to the modulating input of the demodulator 8.

In the demodulator 8 due to the frequency synthesizer 9, controlled by a pseudo-random number generator 10, races of the operating frequency ΔfPofteliminated, as a result of information symbols quadruple-encoded signal carried on the selected initial frequency.

Adopted in the receiving part of the system the Quaternary-coded signal to the input of the selector signal 12, which performs frequency selection strictly defined high-frequency elements of the quadruple-encoded signal. On the first, second, third and fourth information outputs of the selector signals 12, respectively, are formed first, second, third and fourth high-frequency radio signals

=Uwithcos(2π(fi+(Δf3+0.5Δf2))t)

=Uccos(2π(fi+0.5Δf2)t)

=Uccos(2π(fi-0.5Δf2)t)

=Uccos(2π(fi-(Δf1+0.5Δf2))t).

Plot formed of the first, second, third and fourth high-frequency radio signals presented on figa, b, C, d respectively. The first, second, third and fourth high-frequency radio is igaly (figa, b, C, d) with appropriate information outputs of the selector signals 12 respectively receive the first, second, third and fourth information unit allocation of additional sequences 13.

In the block allocation of additional sequences 13 is the separation of the envelope from the first, second, third and fourth high frequency signals (figa, b, C, d) and the elimination of load-bearing high-frequency oscillations. On the first and second information output unit allocation of additional sequences 13 respectively are formed first and second additional sequence. Plot formed by the first and second complementary sequences presented on Figg, W respectively. The first additional sequence (pigd) is formed from the odd-numbered elements of the quadruple-encoded sequence (highlighting elements α, β), and the second additional sequence (figs) is formed from the even-numbered elements of the quadruple-encoded sequence (highlighting elements γ, δ).

The first additional sequence (pigd) is supplied to the first information input of the first and second dual agreed filters 14.1-14.2, and the second additional sequence (figs) comes in second in formazione inputs of the first and second dual agreed filters 14.1-14.2. The first two-channel coherent filter 14.1 configured on αγαδαγβγ Quaternary-coded sequence, and the second two-channel coherent filter 14.2 configured on αγαδβδαδ Quaternary-coded sequence.

The Quaternary-coded sequence, which is configured of the first and second dual agreed filters 14.1-14.2, are orthogonal in the code structure. This orthogonal code on the Quaternary structure-encoded sequence does not have side emissions intercorrelation functions (MCFs)

where- time analysis MCFs; i - number of the Quaternary-coded sequence, which is configured of the first two-channel coherent filter 14.1, i=1, 2, ..., K; j is the number of Quaternary-coded sequence, which is configured of the second two-channel coherent filter 14.2, j=1, 2,...,K.

The room i Quaternary-coded sequence, which is configured of the first two-channel coherent filter 14.1, associated with the number j Quaternary-coded sequence, which is configured of the second two-channel coherent filter 14.2 the following relationship:

The first is dual consistent filter 14.1 first and second additional sequence (figd, g) collapses to the duration of one element of the Quaternary-coded sequence, and the voltage becomes larger in the 2k-1once the amplitude element of the Quaternary-coded sequence. The plot collapsed first and second complementary sequences presented on figa, b, respectively. Folded first and second additional sequence (figa, b) with appropriate information outputs of the first channel matched filter 14.1 respectively receive the first and second information inputs of the first vicites 15.1.

In the first myCitadel 15.1 provides the subtraction of a negative pulse (figb) voltage 2k-1from the second information input of the positive pulse (figa), a voltage of 2k-1arriving at his first entrance. Therefore, the output of the first vicites 15.1 will develop momentum collapsed Quaternary-coded sequence voltage in the 2ktimes the amplitude element of the Quaternary-coded sequence, which corresponds to the ACF Quaternary-coded sequence. The plot collapsed Quaternary-coded sequence presented on figv.

In the second dual a consistent filter 14.2 and second myCitadel 15.2 inspired by the ka of the first and second complementary sequences (figd, W) is similar, with MCFs second matched filter 14.2 by definition equal to zero, therefore, the output of the second vicites 15.2 will be zero (high), which corresponds to the MCFs Quaternary-coded sequence.

Rolled pulses Quaternary-coded sequences (FIGU, g) with outputs of the first and second vicites 15.1-15.2 arrive at the corresponding first and second information inputs of the interference canceller 16.

Block diagram of the interference compensator 16 is presented in figure 2. The first information input of the interference compensator 16 is simultaneously an information input of the first modulator 16.3 and the input of the first deciding unit 16.1, the second information input of the interference compensator 16 is simultaneously an information input of the second modulator 16.4 and the input of the second deciding unit 16.2. Rolled pulses Quaternary-coded sequences (FIGU, g), successively passing without structural changes corresponding to the first and second computing units 16.1-16.2, the first and second modulators 16.3-16.4 and myCitadel 16.5 arrive at the output of the interference canceller 16. Consequently, at the output of vicites 16.5 will be generated pulses Quaternary-coded sequence voltage in the 2ktimes the amplitude element of the Quaternary-coded the placenta is successive. The plot collapsed Quaternary-coded sequence presented on Figg. The generated pulses Quaternary-coded sequence (figd) from the output of vicites 16.5, which is the output of the interference canceller 16, is fed to the input of the decision making unit 17.

In the final unit 17 decides on the transfer of the Quaternary-coded sequence.

Let the input of the receiving part of the system transfer Quaternary-coded radio signals operates pulsed interference (hereinafter interference) as a sequence of discrete pulses with amplitude Up=2Uc.

The total value of the Quaternary-coded signal and interference to the input of the selector signal 12, which performs frequency selection strictly certain elements of the quadruple-encoded signal in the form of the sum of the useful signal and interference Uc+Up. On the first, second, third and fourth information outputs of the selector signals 12, respectively, are formed first, second, third and fourth high-frequency radio signals in the form of the sum of the useful signal and interference Uc+Up. Plot formed of the first, second, third and fourth high-frequency radio signals in the form of the sum of the useful signal and interference Uc+Uppresented at Figo, b, C, d with is therefore, its, where the disturbance is represented as dark squares with amplitude Up=2Uc. The first, second, third and fourth high-frequency radio signals in the form of the sum of the useful signal and interference Uc+Up(figa, b, C, d) with appropriate information outputs of the selector signals 12 respectively receive the first, second, third and fourth information unit allocation of additional sequences 13.

In the block allocation of additional sequences 13 is the separation of the envelope from the first, second, third and fourth high-frequency radio signals in the form of the sum of the useful signal and interference Uwith+Up(figa, b, C, d) and the elimination of load-bearing high-frequency oscillations. On the first and second information output unit allocation of additional sequences 13 respectively are formed first and second additional sequence, where the disturbance is represented as dark squares. Plot formed by the first and second complementary sequences presented on Figg, W respectively. Formed first and second additional sequence (figd, W) with appropriate information output unit allocation of additional sequences 13 act on the first and second information inputs of the first and second dukana inogo matched filter 14.1-14.2, respectively. The first additional sequence (pigd) is supplied to the first information input of the first and second dual agreed filters 14.1-14.2, second additional sequence (figs) is supplied to the second information inputs of the first and second dual agreed filters 14.1-14.2.

In the first dual consistent filter 14.1 first and second additional sequence (figd, W) is minimized. The plot collapsed first and second complementary sequences presented on figa, b, respectively, where the numbers indicate the values of the amplitudes of the elements of the additional sequences. Folded first and second additional sequence (figa, b) with appropriate information outputs of the first channel matched filter 14.1 act respectively on the first and second information inputs of the first vicites 15.1.

In the first myCitadel 15.1 provides the subtraction pulses (figb)from the second information input pulse (figa)received at its first input. Therefore, the output of the first vicites 15.1 will be generated pulses collapsed Quaternary-coded sequence and decorrelating interference. The plot collapsed Quaternary-coded sequence and Dec is regirovannyy interference presented on figv.

In the second dual a consistent filter 14.2 and second myCitadel 15.2 convolution of the first and second complementary sequences (Figg, d) is similar, with MCFs second matched filter 14.2 by definition equal to zero, therefore, the output of the second vicites 15.2 will be formed only pulses collapsed (decorrelating) interference. The plot collapsed (decorrelating) interference presented on file.

Rolled pulses Quaternary-coded sequence and decorrelating interference (FIGU, e) with the respective outputs of the first and second vicites 15.1-15.2, respectively, are received at the inputs of the first and second computing units 16.1-16.2. In the first and second computing units 16.1-16.2 decides which character collapsed Quaternary-coded sequence and decorrelating interference was passed. The decision is made depending on the sign according to the following rule:

The outputs of the first and second computing units 16.1-16.2 generated control pulses Upanel(t). Plot control pulses presented at Figo, respectively.

Rolled pulses cetirizine-encoded sequence and decorrelating interference (FIGU, e) with the respective outputs of the first and second vychitala 15.1-15.2 matched with the public receives information on the inputs of the first and second modulators 16.3-16.4. Control pulses (figa, with outputs of the first and second deciding unit 16.1-16.2, respectively, are received at control inputs of the first and second modulators 16.3-16.4. This takes into account that the first and second modulators 16.3-16.4 operate according to the following rule:

Uo=Uinfoif Upanel=1,

Uo≥0≥Uinfoif Upanel=0.

Thus, under the action of a logical "1" on the control inputs of the first and second modulators 16.3-16.4 inversion minimized pulse Quaternary-coded sequence and decorrelating interference (FIGU, e) does not occur, and under the influence of logical "0" on the control inputs of the first and second modulators 16.3-16.4 inversion occurs only negative minimized pulse Quaternary-coded sequence and decorrelating interference (FIGU, e). Plot inverted folded Quaternary-coded sequence and decorrelating noise on the outputs of the first and second modulators 16.3-16.4 presents on figb, g, respectively.

Rolled inverted pulses of the Quaternary-coded sequence and decorrelating interference (figb, g) with outputs of the first and second modulators 16.3-16.4 respectively receive the first and second information inputs vicites 16.5. In myCitadel 16.5 provided subtraction is uncoiled (decorrelating) interference (high), from the second information input from the Quaternary-coded sequence, and a collapsed (decorrelating) interference (figb)received at its first input. Consequently, at the output of vicites 16.5 will be generated pulses collapsed Quaternary-coded sequence with compensated pulsed interference in the form of a sequence of discrete pulses. The plot collapsed Quaternary-coded sequence presented on Figg.

In the final unit 17 decides on the transfer of the Quaternary-coded sequence with compensated narrow-band pulsed interference in the form of a sequence of discrete pulses.

Thus, the proposed transmission system Quaternary-coded radio signals provides a wider scope in that it increases the noise immunity and reliability when exposed to intentional impulse noise in a sequence of discrete pulses in communication channels with random parameters of the signal (phase, amplitude and polarization) meter and decameter range of waves with frequency hopping for allocating and compensation intentional impulse noise with the use of orthogonal code on the Quaternary structure-encoded sequences without extension chaston the first resource and bandwidth reduction system and allows for synchronous and asynchronous communication systems in the transmission of discrete data and synchronization.

The above data confirm that the implementation of the use of the claimed device the following cumulative conditions:

the tool embodying the claimed device in its implementation, is intended for use in synchronous and asynchronous communication systems as a system of discrete information transmission;

for the claimed device, as it is characterized in the claims, confirmed the possibility of its implementation using the steps described in the application or known before the priority date tools and methods;

the tool embodying the claimed invention in its implementation, is able to achieve perceived by the applicant of the technical result.

Thus, the claimed invention meets the criterion of "industrial applicability".

1. Transmission system the Quaternary-coded radio signal containing the transmission of the clock pulses, the output of which is connected to the input of the shaper D-codes, to the clock inputs of the driver signals of two frequency-shift keying, frequency synthesizer and a random number generator, n-control output of which, where n≥2 - an integer that is connected to the corresponding n control inputs of the frequency synthesizer, the output of which is connected to the modulation input of the modulator is, the output of shaper D-codes connected to the information input of the shaper signals of two frequency-shift keying, the output of which is connected to the information input of the modulator, the modulator output is the output of the transmitting part of the system and is connected through tract distribution to the input of the receiving part of the system, the receiving portion of the system includes a demodulator, an information input which is the input receiving part of the system clock generator pulses, the output of which is connected to the clock inputs of the frequency synthesizer and the pseudo-random number generator, n-control output which is connected to the corresponding n control inputs of the frequency synthesizer, the output of which is connected to the modulating input of the demodulator, the output of which is connected to input selector signals, first, second, third and fourth information, the outputs of which are connected respectively to the first, second, third and fourth information input unit allocation of additional sequences, the first and second information outputs of which are connected respectively to the first and second information inputs of the first channel matched filter, the first and second information outputs of which are connected respectively to the first and second information inputs of the first myCitadel, decisive b is OK, the output which is the output of the receiving part of the system, characterized in that the receiving part of the system added a second two-channel coherent filter, the second myCitadel and the interference canceller, with the first and second information outputs of the block allocation of additional sequences are also connected respectively to the first and second information input of the second dual channel matched filter, the first and second information outputs of which are connected respectively to the first and second information inputs of the second myCitadel, and the outputs of the first and second vicites connected respectively to the first and second information inputs of the interference canceller, the output of which is connected to the input of the decision making unit.

2. Transmission system according to claim 1, wherein the interference canceller comprises first and second critical block, the first and second modulator and myCitadel, the data input of the first modulator and the input of the first casting of the block are connected together and are the first information input of the interference canceller, and an information input of the second modulator and the input of the second deciding unit are connected together and are the second information input of the interference canceller, the output of the first final unit connected to the control input of the first mod is the system, and the output of the second deciding unit connected to the control input of the second modulator, the outputs of the first and second modulators are connected respectively to the first and second information inputs vicites whose output is the output of the interference canceller.



 

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