RU2386212C1 - Method for radio communication with multiple access - Google Patents

Abstract

FIELD: electric engineering.

SUBSTANCE: in method at transmitting side non-linear first and second pseudorandom sequences (PRS) are modulated by according bipolar binary first and second information sequences (IS), in binary third IS bipolar pulses are transformed into unipolar ones, multiplied by elements of the first Walsh code, and inverted pulses of the third IS - by elements of the second Walsh code, results of multiplications are combined and multiplied by modulated second PRS; result of this multiplication is used to modulate bearing oscillation, producing wideband vector phase-manipulated signal, elements of which are transmitted into communication channel at orthogonal polarisations under control of the first modulated PRS; at receiving side copy of the first PRS and its inversion is used to match polarisation conditions (PC) of elements in vector reference signals with PC of elements in vector useful signal, which bears symbols of three IS, result of multiplication of the second PRS copy to copies of the first and second Walsh codes is used to modulate copy of bearing oscillation, producing scalar reference signals for correlation processing of useful signal to extract information units and zeros in the first, second and third IS in four signal channels in compliance with recovery table, erroneous symbols are erased, result of multiplication of scalar reference signals with pulses of meander type are used to compensate signal-like noise.

EFFECT: improved throughput capacity and number of subscribers in systems with multiple access, and compensation of signal-like noise and erasure of erroneous symbols in case of high polarisation distortions of signals.

3 cl, 2 dwg, 1 tbl

Description

The present invention relates to the field of radio communications and can be used in the construction of multiple access systems using noise-like signals.

It is known that communication systems with multiple access have a limit on the number of simultaneously served subscribers [Sklyar B. “Digital communication. Theoretical foundations and practical application. " - M.: Williams Publishing House, 2003, p.676], which does not satisfy the rapidly growing needs for capacity of these systems. In addition, increasing the bandwidth of the communication channels of such systems is usually associated either with the expansion of the spectrum of the used signals, or with an increase in the power of the transmitters.

Currently, for these purposes, in addition to reusing frequency in orthogonal polarizations, more complex methods using the polarization structure of signals are gaining ground in radio communication systems.

The known radio communication method described in US patent 6448941 B1, H01Q 1/36 dated 09/10/2002, in which the carrier polarization is spasmodically tuned synchronously with the pseudorandom carrier frequency tuned, which is achieved by using identical antennas of special design on the transmitting and receiving sides; the polarization state (polarization structure) of the elements of the emitted signal depends on the frequency of the supply voltage and can take several specified states on the signal duration.

This method has several disadvantages:

- tight connection of the polarization state of the signal elements with the frequency of the carrier wave, which limits the number of possible code combinations on the plane "frequency - polarization", therefore, the number of simultaneously served subscribers in the system;

- the need for antennas of a special design, identical on the transmitting and receiving sides;

- despite the presence of polarization redundancy, the throughput of radio communication lines is the same as that of traditional methods with frequency-hopping.

In the application for the invention US 2004/0114548 A1, H04B 7/204 dated 06/17/2004, a multiple access method with polarization coding is proposed, which also implements a hopping polarization of the carrier signal under the control of a pseudorandom sequence (PSP). At the same time, a reference channel is organized on the receiving side under the control of the inverse PSP, in which at the time of reception a part of the interference correlated with the reference signal of the reference channel can be extracted, which is subtracted from the total output effect of the signal channel. This method also has disadvantages:

- the redundancy introduced by the separation of signal elements by orthogonal polarization states is used only for separation of subscribers in communication systems with multiple access, while the throughput of communication lines remains the same as that of systems using code division using conventional direct expansion of the spectrum on one fixed type of polarization;

- the elements of information symbols are unipolar, which means that they can be summed up on the main and orthogonal polarizations without compensation during correlation processing of signals in the receivers of narrow-band information transmission systems operating on fixed polarizations;

- processing of the useful signal at the receiving side in the presence of distortions of the polarization structure of the elements of the information symbol introduces its additional suppression.

The closest in technical essence to the proposed solution is a multiple access radio communication method that also uses polarization coding described in patent RU 2314642, Н04В 7/204 of January 10, 2008, adopted as a prototype.

The prototype method is as follows.

On the transmitting side

A carrier oscillation is generated:

where A ₀ is the amplitude of the sinusoidal signal;

e - symbol of the exponent;

t is the current time;

ω ₀ is the circular frequency, defined as ω ₀ = 2πf ₀ ;

f ₀ - cyclic frequency of the signal.

The first binary information sequence is presented, consisting of a stream of bipolar video pulses a _1n u ₀ (t),

where a _1n = 1; -1 - elements of the first binary information;

u ₀ (t) is a video pulse with a unit amplitude and a duration of T ₀ :

These pulses are multiplied with the elements of the first pseudo-random sequence (PSP), the duration of which:

where N is the signal base.

As a result of multiplication, we obtain the PSP that controls the polarization states of the elements of the information symbol, which have the form:

where b _1m = 1; - 1 - values of elementary pulses of the first SRP;

m = 1, 2, ..., N - serial number of the element of the first SRP;

N is the number of elementary pulses in the first SRP, which determines the signal base;

тогда

then

Here, in the index “m” of the element I _{nm, the} time dependence is reflected.

A second PSP of the same duration is generated with the elements:

Moreover, the code of the second memory bandwidth is always different from the code of the first memory bandwidth.

At the same time, the first and second binary information sequences are submitted, which are streams of bipolar pulses of the same duration T ₀ , but differing in the set of these pulses a _in u ₀ (t), i = 1; 2:

Controlling the polarization states of information symbol elements is represented by a set of complex unit vectors [Kozlov AI, Logvin AI, Sarychev VA “Polarization of radio waves. Polarization structure of radar signals. " - M .: "Radio Engineering", 2005, p.168] polarization (element polarization vectors), which characterize the polarization states of the elements of the information symbol at specified intervals:

where the symbol "·" means a complex vector.

удобнее всего представляется в ортогонально-круговом базисе [С.И.Поздняк, В.В.Кузнецов. «Радиотехника и электроника», 1973 г., т.18, вып.11, стр.2425]:Integrated Element Vector

it is most conveniently represented in an orthogonal-circular basis [S.I. Pozdnyak, V.V. Kuznetsov. "Radio engineering and electronics", 1973, t. 18, issue 11, p. 2425]:

where K _nm and β _nm are, respectively, the ellipticity coefficient and the orientation angle of the polarization ellipse of the mth element of the nth information symbol of the useful or reference (on the receiving side) signals that characterize the polarization structure (polarization state) of the emitted signal element, or the polarization structure of the element reference signal.

So, for linearly polarized useful and reference signals: K _{nm =} 0, β _nm = 0 for the main channel and K _nm = 0, β _nm = π / 2 for the orthogonal channel.

For the useful and reference signals with circular polarization: K _nm = 1 - for signals with the right-handed direction of rotation of the field vectors, K _{nm =} -1 - for signals with the left-handed direction of rotation of the field vectors, and β _{nm is} determined.

принимает два возможных значения:

или ортогональный первому комплексный элементный вектор

.Moreover, for linearly polarized signals, the complex element vector

takes two possible values:

or orthogonal to the first complex element vector

.

принимает соответственно два других возможных значения:

или

.For circularly polarized signals, the complex element vector

takes respectively two other possible values:

or

.

Elements of the first SRP "1" and "-1" correspond to elements of an information symbol with orthogonal polarizations. Moreover, its type of polarization for an arbitrary element of the first SRP is basic.

The second SRP is multiplied with the symbols of the second binary information sequence, as a result of which the SRP is obtained, which modulates the carrier oscillation (1), resulting in the correspondence:

Where

φ _2nm is the phase of high-frequency filling of signal elements.

The complex vector element of the information symbol transmitted to the communication channel is written as follows:

Where

A signal is received in the communication channel:

.Thus, a vector signal carries two information symbols. The symbol of the first information sequence is encoded by a set of element vectors characterizing the polarization states of signal elements. The symbol of the second information sequence is encoded by its set of phases (0, π) of radio pulses, which are characterized by the corresponding element vectors

.

On the receiving side, a copy of the control first SRP determines a set of element vectors characterizing the polarization states of the elements of the reference signal for the first (main) signal channel corresponding to the transmitted symbol of the first binary information sequence a _1n = 1, and determines the correspondence:

An inverted copy of the first (control) SRP determines a set of element vectors characterizing the polarization states of the elements of the reference signal for the second (inverse) signal channel corresponding to a _1n = -1, and is described by the correspondence:

A copy of the second SRP and a copy of the carrier wave are generated

The standard, but taking into account the vector representation of the signal elements, correlation processing [Varakin L.E. "Communication systems with noise-like signals." - M .: “Radio and communications”, 1985, pp. 25-32] of the incoming useful signal (10) in the first and second signal channels. At the same time, conversions

and the corresponding effects are formed:

Here, the symbol “T” means a transpose operation;

the symbol "*" - complex pairing;

the symbol "| · |" is the module of a complex quantity.

Wherein

как модуль скалярного произведения двух единичных коллинеарных комплексных векторов, которые характеризуют поляризационную структуру соответствующих элементов полезного и опорного сигналов [Канарейкин Д.Б., Павлов Н.Ф., Потехин В.А. «Поляризация радиолокационных сигналов». - М.: «Сов. радио», 1966 г., стр.23-28], то получают:Since the ratio

as a module of the scalar product of two unit collinear complex vectors that characterize the polarization structure of the corresponding elements of the useful and reference signals [Kanareikin DB, Pavlov NF, Potekhin VA "Polarization of radar signals." - M .: “Owls. radio ”, 1966, pp. 23-28], then receive:

when transmitting pulses a _2n = 1 and a _1n = 1 at the output of the first and second signal channels, respectively, we have: E _1s = A ² ₀ N; E _2s = 0;

when transmitting pulses a _2n = 1 and a _1n = -1 at the output of the first and second signal channels, respectively, we have: E _1s = 0; E _2s = -A ² ₀ N;

when transmitting pulses a _2n = -1 and a _1n = 1 at the output of the first and second signal channels, respectively, we have: E _1s = -A ² ₀ N; E _2s = 0;

when transmitting pulses a _2n = -1 and a _1n = -1 at the output of the first and second signal channels, respectively, we have: E _1s = 0; E _2s = A ² ₀ N.

That is, the signal will always be received alternately by one of the two signal channels. A sign of receiving an information unit of the first information sequence is the fact of receiving a signal on the first (main) signal channel. A sign of receiving informational zero of the first informational sequence is the fact of signal reception in the second (inverse) signal channel. Signs of receiving information units and zeros of the second information sequence are signs of signals received in any of the signal channels. The “+” sign corresponds to the information unit of the second information sequence, and the “-” sign corresponds to the information zero of the second information sequence. Thus, on any of the signal channels, two information symbols from two independent sources of information can be simultaneously received. In this case, the signal channel in which reception is performed is the main signal channel, and the other signal channel is the inverse signal channel.

At the same time, pulses of the meander type with a unit amplitude:

multiplied by a copy of the second PSP:

The result (15) modulates a copy of the carrier wave (1), which determines the correspondence:

and serves as a scalar reference signal in the formation of two reference channels. The first reference channel corresponds to the first signal channel and is determined by multiplying the useful signal coming into the first signal channel with the modulation result taking into account (16) and the subsequent summation of the resulting elements. At the time of reference in the first reference channel:

At

At

Thus, the output effect of the first signal channel, which takes place in the prototype method at the time of taking the reference, is the ratio:

.For N >> 1 1 / N≈0 and

.

At the same time, the second reference channel corresponding to the second signal channel is determined by multiplying the carrier modulated by the SRP (15) and the useful signal supplied to the second signal channel, and then summing the resulting elements:

At

At

The output effect of the second signal channel is:

Upon receipt of a signal-like interference along with a useful signal, the duration of which is T ₀ , and a set of element vectors characterizing the polarization states of its elements and a set of phases of high-frequency filling of elementary pulses, which are interference elements, are random, due to these accidents some of the interference elements may fall into the first signal channel, and part into the second signal channel.

In this case, when a _1n = 1 is transmitted in the first signal channel at the time of taking the sample, the sum of the values of the correlation functions of the useful signal and the interference (the sum of the energies of the useful signal and the part of the interference correlated with the reference signal of the first signal channel) is formed:

In the reference channel corresponding to the first signal channel, at the time of counting, the effect is formed:

At the output of the first signal channel at the time of taking the sample, the effect is formed:

At the same time, in the second signal channel, at the moment of taking the reference, the value of the interference correlation function is formed (the energy of the interference part correlated with the reference signal of the second signal channel):

In the reference channel corresponding to the second signal channel, at the moment of taking the reference, the value of the interference correlation function (energy of the interference part correlated with the reference signal of the reference channel corresponding to the second signal channel) is also formed:

At the output of the second signal channel at the time of taking the sample, the effect is formed:

Accordingly, when a _1n = -1 is transmitted, an effect similar to (23) is formed at the output of the second signal channel at the time of taking the reference:

At the same time, an effect similar to (26) is formed at the output of the first signal channel:

The analysis of relations (23) - (28) shows that they include the expressions:

и

and

будет близка к нулю. При этом полная режекция помехи в первом или втором сигнальных каналах и, соответственно, одновременные нулевые эффекты на выходах опорных каналов, соответствующих первому и второму сигнальным каналам, осуществляется, либо в случае ортогональности элементных векторов элементов помехи и элементных векторов элементов опорных сигналов, либо при равенстве указанных выше корреляционных функций, либо при одновременном выполнении этих условий, что увеличивает вероятность режекции помехи. При этом элементы информационных символов второй информационной последовательности биполярны, а значит, в узкополосных системах передачи информации на любой фиксированной поляризации при корреляционной обработке они будут суммироваться с взаимной компенсацией. То есть способ-прототип эффективен в части электромагнитной совместимости с узкополосными средствами передачи информации.the value of which due to the randomness of the elements b _{2m, n} and the polarization states of these elements

will be close to zero. In this case, a complete rejection of the interference in the first or second signal channels and, accordingly, simultaneous zero effects at the outputs of the reference channels corresponding to the first and second signal channels, is carried out either in the case of the orthogonality of the element vectors of the interference elements and the element vectors of the elements of the reference signals, or if the above correlation functions, or while fulfilling these conditions, which increases the likelihood of rejection interference. At the same time, the elements of information symbols of the second information sequence are bipolar, which means that in narrow-band information transmission systems at any fixed polarization during correlation processing, they will be summed up with mutual compensation. That is, the prototype method is effective in terms of electromagnetic compatibility with narrowband information transfer means.

принимаемого из канала связи, будет отличаться от своего исходного значения

. При этом для элементов информационного символа в сигнальном канале

а в инверсном сигнальном канале

. Тогда при поступлении на приемную сторону сигнала, несущего символ a_1n=1 в первом (основном) сигнальном канале, в момент взятия отсчета формируется эффектIn the case where there is no interference, but the propagation medium introduces distortions in the polarization structure of the elements of information symbols in such a way that a polarization-orthogonal channel appears in the polarization elemental vector characterizing the polarization state of the information symbol element, i.e., cross-polarized (interchannel) appear interference and any elementary polarization vector from a set of such vectors characterizing the polarization state of information symbol elements

received from the communication channel will be different from its original value

. Moreover, for the elements of the information symbol in the signal channel

and in the inverse signal channel

. Then, when a signal bearing the symbol a _1n = 1 in the first (main) signal channel arrives at the receiving side, the effect is formed

where N ^/ <N is the conditional (equivalent) value of the signal base corresponding to the reduced energy of the received information symbol.

At the same time, in the reference channel corresponding to the first signal channel, at the time of taking the sample, the effect is formed:

At

At

Thus, the output effect of the first signal channel, which takes place in the prototype method at the time of taking the reference, is a ratio similar to (18):

At N ^/ >> 1 1 / N ^/ ≈0 and E ^/ _1s ≈ ± A ² ₀ N ^/ .

When a signal is received on the receiving side that carries the symbol a _1n = -1 in the second (main) signal channel, an effect is formed at the moment of taking the reference

At the same time, in the reference channel corresponding to the second signal channel, an effect is formed at the moment of taking the reference

At

At

The output effect of the second signal channel, which takes place in the prototype method at the time of taking the reference, is a ratio similar to (20):

For example, let for a linearly polarized signal element the communication channel distort the polarization structure of the signal elements equally (quasistationary symmetric polarization-orthogonal channels without dispersion), that is, for the elements of the useful signal:

and for the elements of the reference signal:

Then

или

, а для опорного сигнала линейной поляризации

или

, тогда для элемента сигнала на основной поляризации:Let for a useful signal

or

, and for the linear polarization reference signal

or

, then for the signal element on the main polarization:

and on the orthogonal polarization of the same signal element

The numerical values of the scalar product modules of the corresponding elementary polarization vectors for the main and orthogonal components of the signal elements will have the following values:

When transmitting the symbol a _1n = 1, the energy of the polarization-orthogonal components of the signal:

- в первом (основном) сигнальном канале,

- in the first (main) signal channel,

- во втором (инверсном) сигнальном канале. Следовательно, на выходе первого (основного) сигнального канала получают эффект:

при этом N^/=0,731N. На выходе второго (инверсного) сигнального канала получают эффект:

- in the second (inverse) signal channel. Therefore, at the output of the first (main) signal channel, the effect is obtained:

wherein N ^/ = 0.731N. At the output of the second (inverse) signal channel, the effect is:

When transmitting the character a _1n = -1 we get:

at the output of the first (inverse) signal channel

at the output of the second (main) signal channel

That is, in the main signal channels due to the "transfer" of the energy of the signal elements from the main polarization to its orthogonal polarization, about 27% is lost, but there are no additional losses associated with signal processing at the receiving side. The signal energy will be reduced only due to the fact that for each element of the information symbol only the component corresponding to the main channel of this element will be accepted.

Thus, the prototype method provides efficient use of the radio frequency spectrum due to the full use of the redundancy introduced by spacing the signal elements in orthogonal polarization states, provides improved electromagnetic compatibility with narrow-band information transmission systems and is insensitive to the influence of cross-polarized interference in the main signal channels introduced by the propagation medium.

Analysis of the prototype method shows that it has two drawbacks. The first is that the opportunities to increase the bandwidth due to the properties of pseudo-random codes are not fully used, the second is that with a strong distortion of the polarization structure of the useful signal, its cross-polarization component in the inverse signal channel E _⊥ can lead to reception errors.

To eliminate these shortcomings in the method of radio communication with multiple access, including on the transmitting side generating carrier waves for transmitting a useful signal, generating the first and second pseudorandom sequences (PSP) of the same length, but with a different set of elements, obtaining binary first and second information sequences (IP ), consisting of bipolar pulses of the same duration, but with a different set of elements, multiplying the second SRP with the symbols of the second IP, resulting in a semi a second PSP modulated by the symbols of the second IP, multiplication of the first PSP with the symbols of the first IP, resulting in the first PSP, modulated by the symbols of the first IP to control the polarization states of the elements of information symbols of the second IP; on the receiving side, generating a copy of the carrier wave, a copy of the first SRP and its inversion, a copy of the second SRP, video pulses of the meander type with a period equal to the duration of the information pulses, according to the invention, the first and second SRP are nonlinear on the transmitting side, at the same time they receive binary the third PI, consisting of bipolar pulses of the same duration as the first and second PI, but with a different set of elements, then in the third PI negative pulses are converted to the zero level, as a result what do they get the third IP in the form of a stream of unipolar pulses, generate two Walsh codes from one ensemble of the same duration as the first and second PSP, multiply the first Walsh code with the symbols of the third IP, and the second Walsh code with the symbols of the inverted third IP, then the results the above multiplications are combined, resulting in a third PI modulated by two Walsh codes, which is further multiplied with the previously obtained result of multiplying the second PSP with the symbols of the second PI, resulting in a derivative SP with the correlation properties of the second (producing) SRP, which modulates the carrier wave, resulting in a useful signal, which is a broadband phase-manipulated vector signal carrying a channel symbol with eight possible states (information symbols of the second and third PI), the elements of which are then transmitted to the channel communication on orthogonal polarizations according to the pseudo-random law in accordance with the first SRP; on the receiving side, a copy of the first SRP and its inversion are used to coordinate the polarization states of the elements of the vector reference signal with the polarization states of the elements of the incoming vector useful signal, at the same time, a copy of the second SRP is multiplied with copies of the first and second Walsh codes, a copy of the carrier wave is modulated by the multiplication results, modulation results are used as scalar reference signals in the correlation processing of the useful signal to extract information units and zeros in the first, second, and third PIs in four signal channels in accordance with the reconstruction table, simultaneously, meander-type video pulses modulate the scalar reference signals of the signal channels, resulting in scalar reference signals for correlation processing of the useful signal in the four reference channels corresponding to the four signal channels, at the same time, in four reference channels, parts of signal-like interference are distinguished, correlated with the useful signal in the corresponding signal channels, and subtracted from the input effects of these signal channels, subtract the output effects of the first and third, second and fourth signal channels from each other in pairs, if they are equal, the output effects nullify, which is equivalent to erasing the channel symbols, if they are not equal, then the smaller of them nullifies, and the larger one is left unchanged with the sign, then the operation of taking the sign of the output effects of the signal channels is carried out and a channel symbol is obtained in the form of a column, it is multiplied with a 4 × 4 unit matrix, the number is determined nth column of the identity matrix, in which the result of the multiplication is nonzero, find the same column number in the aforementioned recovery table, in this column of the recovery table find a value equal to the result of multiplying the accepted column and the identity matrix column, and in accordance with this, the characters of the first , second and third IP, corresponding to the transmitted.

The proposed method of radio communication with multiple access is as follows.

On the transmitting side

A carrier oscillation similar to (1) is generated to transmit a useful signal.

Nonlinear first and second PSP are generated [L.E. Varakin. "Communication systems with noise-like signals." - M.: "Radio and Communications", 1985, pp. 73-78].

Two Walsh codes are generated from one ensemble of the same duration as the first and second PSP with elements w _1k = 1; -1, w _2k = 1; -1, where k = 1, 2, ..., K.

At the same time, binary first, second and third information sequences (IP) are supplied in the form of streams of bipolar pulses of the same duration T ₀ , but differing in a set of these pulses with elements a _in u ₀ (t), i = 1, 2, 3.

Moreover, in the third PI, negative pulses are converted to the zero level, i.e. the values of the elements of the corresponding binary IEs will be:

The first PSP is multiplied with the first PI, resulting in a PSP that controls the polarization states of the elements of information symbols.

The control of the polarization states of information symbol elements is determined by a correspondence similar to (6):

Moreover, the elements of the first SRP "1" and "-1" correspond to orthogonal polarizations.

The second PSP is multiplied with the symbols of the second PI:

и получают ее инвертированную копию

At the same time, the logical negation operation is performed on the symbols of the third IP

and get its inverted copy

In this case, units of units become blocks of zeros, and blocks of zeros become blocks of units.

Next, the symbols of the third IP are multiplied by the first Walsh code, resulting in the first Walsh code modulated by the units of the third IP (hereinafter in formula (38) c _1k ), and the symbols of the inverted copy of the third IP are multiplied by the second Walsh code, resulting in the second Walsh code modulated by the zeros of the third PI (hereinafter in formula (38) with _2k ):

Then the obtained modulation results with _1k and _2k are combined:

где

Where

where "∪" is the symbol of association.

The result (37) is multiplied with the result (39), which determines the elements of the derivative of the SRP with the correlation properties of the second (generating) SRP [Varakin L.E. "Communication systems with noise-like signals." - M .: "Radio and communications", 1985, pp. 110-114]. The result is a third PI modulated by two Walsh codes:

- элементы i-й производной ПСП длительностью τ₀ (i=1, 2; l=1, 2), которой модулируется несущее колебание (1);Where

- elements of the ith derivative of the SRP with duration τ ₀ (i = 1, 2; l = 1, 2), which modulates the carrier oscillation (1);

w _lm - part of the element of the i-th Walsh code also of duration τ ₀ .

The set of bipolar pulses of the ith derivative of the SRP is different from their set in the second SRP.

The result is a match:

where is the phase of the high-frequency filling of the signal elements

The complex vector element (channel symbol) of the information symbol transmitted to the communication channel is written as follows:

Where

A signal is received in the communication channel:

. Символ второй ИП закодирован своим набором фаз (0, π) радиоимпульсов, которые определяются второй (производящей) ПСП. Символ третьей ИП в зависимости от его значения закодирован одним из двух кодов Уолша (исходных), которые модулируют вторую (производящую) ПСП, изменяя соответствующим образом расстановку начальных фаз 0 и π в радиоимпульсах.Thus, a vector signal is characterized by eight states and carries three information symbols. The symbol of the first IP is encoded by a set of element vectors characterizing the polarization states of the elements of the radio signal

. The symbol of the second IP is encoded by its set of phases (0, π) of radio pulses, which are determined by the second (generating) SRP. The symbol of the third IP, depending on its value, is encoded by one of two Walsh codes (initial), which modulate the second (generating) SRP, changing accordingly the arrangement of the initial phases 0 and π in the radio pulses.

On the receiving side

A copy of the carrier wave is generated.

A copy of the control first PSP is generated, which determines the set of element vectors characterizing the polarization states of the elements of the reference signals corresponding to the transmitted symbol of the first IP and _1n = 1:

An inverted copy of the first (control) SRP is generated, which defines a set of element vectors characterizing the polarization states of the elements of the reference signals corresponding to the transmission a _1n = -1

A copy of the second PSP and copies of the first and second Walsh codes are generated.

Four vector reference signals are formed for four signal channels:

In four signal channels, the standard, but taking into account the vector nature of the useful signal (44), its correlation processing is carried out. At the same time, the following transformations are carried out in the signal channels:

and the corresponding output effects are formed:

In this case, the following relations hold:

In each signal channel at the output, an operation is performed:

sign (E _h ), where

Then, when transmitting the symbols a _1n = l, and _2n = 1 and a _3n = 1, at the output of four signal channels, after the operation sign (E _h ), the received channel symbol is obtained in the form of a column characterizing the possible states of the channel symbol:

Channel Number h: 1 2 3 4

sign (E _h ): [1 0 0 0] ^T.

When transmitting the characters a _1n = 1, a _2n = -1 and a _3n = 1 at the output of the four signal channels after the operation sign (E _h ) receive the column:

Channel Number h: 1 2 3 4

sign (E _h ): [-1 0 0 0] ^T.

When transmitting the characters a _1n = l, a _2n = 1 and a _3n = -1, at the output of four signal channels after the operation sign (Е _h ), a column is obtained:

Channel Number h: 1 2 3 4

sign (E _h ): [0 1 0 0] ^T.

When transmitting the characters a _1n = l, a _2n = -1 and a _3n = -1, at the output of four signal channels after the operation sign (E _h ), a column is obtained:

Channel Number h: 1 2 3 4

sign (E _h ): [0 -1 0 0] ^T.

When transmitting the characters a _1n = -1, a _2n = 1 and a _3n = 1 at the output of four signal channels after the operation sign (E _h ), a column is obtained:

Channel Number h: 1 2 3 4

sign (E _h ): [0 0 1 0] ^T.

When transmitting the characters a _1n = -1, and _2n = -1 and a _3n = 1 at the output of the four signal channels after the operation sign (E _h ) receive the column:

Channel Number h: 1 2 3 4

sign (E _h ): [0 0 -1 0] ^T.

When transmitting the characters a _1n = -1, and _2n = 1 and a _3n = -1 at the output of the four signal channels after the operation sign (E _h ) receive the column:

Channel Number h: 1 2 3 4

sign (E _h ): [0 0 0 1] ^T.

When transmitting the characters a _1n = -1, and _2n = -1 and a _3n = -1, the output column of the four signal channels after the operation sign (E _h ) receive the column:

Channel Number h: 1 2 3 4

sign (E _h ): [0 0 0 -1] ^T.

Thus, the possible output effects of the signal channels after the operation sign (E _h ) are described by a 4 × 8 matrix:

Form a recovery table of transmitted information symbols a _1n , a _2n , a _3n :

h _t one 2 3 four (q _h ) _t +1 -one +1 -one +1 -one +1 -one (a _1n , a _2n , a _3n ) _t 1, 1, 1 1, 0, 1 1, 1, 0 one hundred, 0, 1, 1 0, 0, 1 0, 1, 0 0, 0, 0

Here, the index t of the values of h and q _h means that these are tabular values.

To recover the transmitted information symbols a _1n , a _2n , and _3n use a 4 × 4 identity matrix:

, осуществляют операцию его перемножения с матрицей

:When transmitting information symbols a _1n , a _2n , a _3n from the output of four signal channels on the receiving side, a column vector is received

carry out the operation of its multiplication with the matrix

:

Determine the value of h (channel number) at which q _h ≠ 0.

Next, a comparison is made of the value of h at which q _h ≠ 0, and the value of q _h ≠ 0 itself, obtained upon receipt of the useful signal, with the same table values, and if they match, the corresponding values of the transmitted information symbols are selected from the table:

where the symbol "⇔" means a comparison of values.

That is, the signal will always be received alternately by one of the four signal channels. A sign of receiving an information unit of the first IP is the fact of receiving a signal on the first or second signal channels. A sign of receiving informational zero of the first IP is the fact of signal reception in the third or fourth signal channels. Signs of the reception of information units and zeros of the second SP are signs of signals received in any of the signal channels. The “+” sign corresponds to the information unit of the second SP, and the “-” sign corresponds to the information zero of the second SP. A sign of receiving the information unit of the third IP is the fact of receiving a signal on the first or third signal channels. A sign of receiving informational zero of the third IP is the fact of receiving a signal on the second or fourth signal channels. Thus, on any of the signal channels, three information symbols from three independent sources of information can be simultaneously received.

Moreover, the signal channel in which the reception is carried out and the signal channel paired with it are the main signal channels, and the other two signal channels are inverse signal channels. For example, when receiving a _1n = l and any a _2n and a _{3n, the} main channels are the first and second signal channels, and the third and fourth are inverse signal channels. When receiving a _1n = -1 and any a _2n and a _{3n, the} main channels are the third and fourth signal channels, and the first and second are inverse signal channels.

At the same time, pulses of the meander type with a unit amplitude:

multiplied by the result of multiplying copies of the second PSP with copies of the first and second Walsh codes:

The result (58) modulate a copy of the carrier wave (1) and form two scalar reference signals for four reference channels corresponding to four signal channels:

The first and third reference channels correspond to the first and third signal channels and are determined by multiplying the useful signal supplied to the first or third signal channels with the reference signal (59) and the subsequent summation of the resulting elements.

The second and fourth reference channels correspond to the second and fourth signal channels and are determined by multiplying the useful signal supplied to the second or fourth signal channels with the reference signal (60) and the subsequent summation of the resulting elements.

At the time of reference, output effects are formed in the reference channels:

Then, taking into account relations (50) - (52), when transmitting any combination of information symbols, a _1n , a _2n and a _3n

and the output effect of any of the signal channels is the value:

, будут случайными, вследствие этих случайностей часть элементов помехи может попасть в первый и второй сигнальные каналы, а часть - в третий и четвертый сигнальные каналы.Upon receipt of a signal-like interference along with a useful signal, the duration of which is equal to T ₀ , and a set of element vectors characterizing the polarization states of its elements and a set of phases of high-frequency filling of elementary pulses, which are interference elements

will be random, due to these accidents, some of the interference elements may fall into the first and second signal channels, and some into the third and fourth signal channels.

In this case, when transmitting information symbols a _1n = l, a _2n = 1, a _3n = 1 in the first signal channel at the time of taking the sample, the sum of the values of the correlation function of the useful signal and the interference (the sum of the energies of the useful signal and the part of the interference correlated with the reference signal of this signal channel):

In the remaining signal channels, the energies of those parts of the interference that are correlated with the reference signals of the corresponding signal channels are released:

In the reference channels, the energies of those parts of the interference that are correlated with the reference signals of the respective reference channels will also be released:

Then the output effects of the corresponding signal channels are described by the relations:

The analysis of relations (72) - (75) shows that they include the expressions:

and

будет близка к нулю. При этом полная режекция помехи в сигнальных каналах и, соответственно, одновременные нулевые эффекты на выходах опорных каналов осуществляются, либо в случае ортогональности элементных векторов элементов помехи и элементных векторов элементов опорных сигналов, либо при равенстве указанных выше корреляционных функций, либо при одновременном выполнении этих условий. Модуляция производящих ПСП кодами Уолша увеличивает вероятность режекции помехи по сравнению со способом-прототипом. Элементы информационных символов второй ИП биполярны, а значит, в узкополосных системах передачи информации на любой фиксированной поляризации при корреляционной обработке они будут суммироваться с взаимной компенсацией. То есть предлагаемый способ эффективен и в части электромагнитной совместимости с узкополосными средствами передачи информации.the value of which due to the randomness of the elements b _{2m, n} and the polarization states of these elements

will be close to zero. In this case, a complete rejection of the interference in the signal channels and, accordingly, simultaneous zero effects at the outputs of the reference channels are carried out either in the case of the orthogonality of the element vectors of the interference elements and the element vectors of the elements of the reference signals, or when the above correlation functions are equal, or if these conditions are satisfied . The modulation of the generating SRP by Walsh codes increases the likelihood of rejection of interference in comparison with the prototype method. Elements of information symbols of the second IP are bipolar, which means that in narrow-band information transmission systems at any fixed polarization during correlation processing, they will be summed up with mutual compensation. That is, the proposed method is effective in terms of electromagnetic compatibility with narrow-band information transmission media.

In the case where there is no interference, but the propagation medium introduces distortions into the polarization structure of the elements of information symbols, when a signal carrying the symbols a _1n = 1, a _2n = 1, a _3n = 1 in the first (main) signal channel arrives at the receiving side , at the moment of taking the count, an effect is formed

where N ^/ <N is the conditional (equivalent) value of the signal base corresponding to the reduced energy of the received information symbol. In the remaining signal channels, output effects are formed:

,

или

,

.Therefore, in the case of strong distortions of the polarization structure of the useful signal when transmitting any group of information symbols a _1n , a _2n , a _3n, non-zero values of the output effect are possible in pairs of mutually inverse signal channels

,

or

,

.

At the same time, in the corresponding reference channels at the time of taking the sample, output effects are formed with values close to zero:

(72)-(75) в парах взаимно инверсных сигнальных каналов

или

осуществляют стандартную операцию вычитания величин

и

: если

или

, то значение

принимается в качестве истинного, а значение

заменяется нулем, то есть

В противном случае - истинным значением принятого сигнала будет

, а значение

заменяется нулем. В случае равенства выходных эффектов в этих парах сигнальных каналов их выходные эффекты заменяются нулевыми значениями:After subtraction operation

(72) - (75) in pairs of mutually inverse signal channels

or

perform the standard operation of subtracting values

and

: if

or

then the value

taken as true, and the value

is replaced by zero, i.e.

Otherwise, the true value of the received signal will be

, and the value

replaced by zero. If the output effects are equal in these pairs of signal channels, their output effects are replaced by zero values:

либо

то произойдет его стирание, что может служить признаком ошибки приема сигнала.If at the same time a distorted useful signal was present in a situation where

or

then it will be erased, which may be a sign of a signal reception error.

Then, with the same values of the polarization states of the elements of the useful and reference signals, as in the example for the prototype, when receiving a _1n = 1 and any a _2n and a _3n , in the main signal channel we get

and in the inverse signal channel, respectively,

, на выходе третьего (инверсного) сигнального канала будет нулевое значение, то есть

.Given that

, at the output of the third (inverse) signal channel there will be a zero value, i.e.

.

This means that in the first (main) signal channel, due to the "transfer" of the energy of the signal elements from the main polarization to its orthogonal polarization, about 27% is lost, but there are no additional losses associated with signal processing at the receiving side. At the same time, the outputs of the four signal channels will always be either a single column or zero (corresponding to the erased channel symbol). Similar results are obtained when taking any combination of information symbols of the first, second and third PI.

Thus, the proposed method provides a more efficient use of the properties of pseudo-random codes, which consists in increasing the speed of information transfer and allows you to increase the number of subscribers in K / 2 times in comparison with the prototype method. In addition, with large polarization distortions, the erasure of erroneous channel symbols is realized, which makes it possible to detect erroneous symbols in the IP.

A functional diagram of a device for implementing the proposed method is presented in the drawings: FIG. 1 — transmitting part, FIG. 2 — receiving part, where the following notation is introduced:

1 and 48 - the first and second generators of the carrier oscillation (GNK1 and GNK2);

5 and 49 - the first and second generators of the second PSP (G2PSP1 and G2PSP2);

2-4, 7, 9, 13, 23, 26, 28, 31, 33, 36, 38, 41, 43-46, 51, 53-55 - the first, ..., twenty-second multiplication blocks (BP1 - BP3, BP4 , BP5, BP6, BP7, BP8, BP9, BP10, BP11, BP12, BP13, BP14, BP15-BP18, BP19, BP20-BP22);

6 - block Association (BO);

10 and 47 - the first and second generators of the first Walsh code (G1KU1 and G1KU2);

11 and 52 - the first and second generators of the second Walsh code (G2KU1 and G2KU2);

8 - logical negation operation block (NOT);

12 - antenna switch with orthogonal polarizations of the transmitting side (PAPer);

15 and 16 - the first and second transmitting antennas with orthogonal polarizations (APer1 and APer2);

19 and 22 - the first and second antenna switches with orthogonal polarizations of the receiving side (PAPr1 and PAPr2);

17 and 18 - the first and second receiving antennas with orthogonal polarizations (APr1 and APr2);

14 and 20 - the first and second generators of the first PSP (G1PSP1 and G1PSP2);

21 - inverter;

24, 27, 29, 32, 34, 37, 39, 42 - the first, ..., eighth summation blocks (correlators) (BS1, BS2, BS3, BS4, BS5, BS6, BS7, BS8);

25, 30, 35, 40 - the first, ..., fourth blocks of subtraction (BV1, BV2, BV3, BV4);

50 - meander pulse generator (GIM);

56 - calculator;

57 - converter of pulses of negative polarity to the zero level (PR);

58 - multiplexer;

59 - demultiplexer.

The device with which the proposed method is implemented is a radio communication line, which contains:

On the transmitting side - sequentially connected GNK1 1, BP1 2 and PAPer 12; serially connected G2PSP1 5, BP3 4 and BP2 3, the output of which is connected to the second input of BP2 1; serially connected G1PSP1 14 and BP6 13, the output of which is connected to the second, control input PAPer 12, the first and second outputs of which are connected to the inputs of the corresponding antennas APer1 and APer2; serially connected G1KU1 10 and BP4 7, the output of which is connected to the first input of BO 6; serially connected G2KU1 11 and BP5 9, the output of which is connected to the second input of BO 6, the output of which is connected to the second input of BP2 3; the output of PR 57 is connected to the first input of BP5 9, and through the block NOT 8 to the first input of BP4 7. To implement the method according to claims 1, 2, the first inputs of BP6 13, BPZ 4 and the input of PR 57 are, respectively, inputs for the characters of the first , second and third PIs from three different sources. To implement the method according to claims 1, 3, the inputs for the symbols of the first, second, and third UI are, respectively, the first, second, and third outputs of the multiplexer 58, the input of which is an input for the symbols of the original UI from a single source.

On the receiving side, there are serially connected G1PSP2 20 and an inverter 21, the output of which is connected to the third control input PAPr2 22; connected in series BP7 23, BS1 24 and BV1 25, the output of which is connected to the second input of the calculator 56; connected in series BP8 26 and BS2 27, the output of which is connected to the second input BV1 25; connected in series BP9 28, BS3 29 and BV2 30, the output of which is connected to the first input of the calculator 56; connected in series BP10 31 and BS4 32, the output of which is connected to the second input BV2 30; serially connected BP11 33, BS5 34 and BV3 35, the output of which is connected to the fourth input of the calculator 56; connected in series BP12 36 and BS6 37, the output of which is connected to the second input BV3 35; series-connected BP13 38, BS7 39 and BV4 40, the output of which is connected to the third input of the calculator; connected in series BP14 41 and BS8 42, the output of which is connected to the second input BV4 40; the first output G1PS2 20 is connected to the third control input PAPr1 19, the output of which is connected to the first inputs BP7 23, BP8 26, BP9 28 and BP10 31, the first signal input PAPr1 19 is connected to the output of the antenna APr1 17 and to the first signal input PAPr2 22, the second signal input PAPr1 19 is connected to the output of the antenna APr2 18 and the second signal input PAPr2 22, the output of which is connected to the first inputs BP11 33, BP12 36, BP13 38 and BP14 41, the second input of which is connected to the second output BP21 54, the first output of which is connected with the second input BP10 31, the second input with the second output of the GIM 50 and the first input with the second input of BP13 38 and the output of BP20 53, the first output of the GIM 50 is connected to the second input of BP15 43, the first output of which is connected to the second input of BP8 26, the second output with the second input of BP12 36, and the first input with the second input of BP7 23 and the output of BP16 44; the first output of GNK2 48 is connected to the first inputs of BP16 44 and BP17 45, the first output of which is connected to the second input of BP9 28, and the second input is connected to the first output of BP19 51, the second output of which is connected to the second input of BP20 53, the second input is connected to the output of G2KU2 52, and the first input - with the second output Г2ПСП2 49, the first output of which is connected to the first input БП18 46, the second input of which is connected to the output Г1КУ2 47, the first output - with the second input БП16 44, and the second output - with the second input БП22 55, the output of which is connected to the second input of BP11 33, and the first input to the second output of GNK2 48 and the first output BP20 53.

To implement the method according to claims 1, 2, the first, second and third outputs of the calculator 56 are the corresponding outputs of the receiving part of the device.

To implement the method according to claims 1, 3, the first, second and third outputs of the calculator 56 are connected to the corresponding inputs of the demultiplexer 59, the output of which is the output of the receiving part of the device.

As an example, we describe the operation of the radio link with which the proposed method is implemented for the case of signal transmission without interference and polarization distortion.

On the transmitting side, from the output G2PSP1 5, the second PSP with the element duration τ ₀ = T ₀ / N is fed to the second input of BP3 4. At the same time, bipolar pulses of a binary second PI of duration T ₀ are supplied to the first input of BP3 4. At the same time, bipolar pulses of a binary third IP with a duration of T ₀ are fed to the input of the PR 57 block, where the pulses of negative polarity are converted to the zero level, as a result of which, from the output of PR 57, the input of the HE 8 block and the first input of BP5 9 receive unipolar pulses third PI. At the same time, the second input of BP5 9 from the output of G2KU1 11 receives the elements of the second Walsh code, the duration of which is also equal to T ₀ . The first input of BP4 7 from the output of block NOT 8 receives pulses of the third IP, in which the blocks of units became blocks of zeros and the blocks of zeros became blocks of units, the elements of the first Walsh code are received at the second input of BP4 7 from the output of G1KU1 10. From the outputs of BP4 7 and BP5 9 to the corresponding first and second inputs of BO 6, the results of multiplying the units of the third IP with the first Walsh code and the results of multiplying the zeros of the third IP with the second Walsh code are received; the result of combining from the output of BO 6 is fed to the second input of BP2 3, the first input of which from the output of BP3 4 receives the result of multiplying the pulse of the second SP with the elements of the second PSP. From the output of BP2 3, the derivative of the SRP arrives at the second input of the unit BP1 2, a carrier oscillation arrives at its first input from the output of the STP 1, then a broadband phase-shifted signal comes from the output of BP1 2 to the first signal input of PAPer 12. At the same time, the first input of BP6 13 receives bipolar pulses of a binary first IP of duration T ₀ , the second input of BP6 13 receives the elements of the first PSP from the output G1PSP1 14; as a result of their multiplication from the output of BP6 13 to the second, the control input PAPer 12 receives the passband, which controls the switching of the inputs of the orthogonally polarized transmitting antennas Aper1 15 and Aper2 16 depending on the sign of the element of the first ASC. As a result, a vector broadband phase-shifted signal is emitted into the communication channel, carrying a channel symbol with eight possible states (three information symbols of three IPs), the elements of which are transmitted on orthogonal polarizations.

On the receiving side, the radio signal elements transmitted to the main polarization from the output of the APr1 17 antenna (main polarization) are fed to the first signal inputs of the PAPr1 19 and PAPr2 22 blocks, and the radio signal elements transmitted to orthogonal polarizations from the output of the APr2 18 antenna (orthogonal polarization) are supplied to the second signal inputs PAPr1 19 and PAPr2 22. Simultaneously, from the first output G1PSP2 20 to the third, control input PAPr1 19, the elements of the first PSP governing the switching of the outputs of the orthogonally polarized antennas APr1 17 and APr2 18 in the PAPr1 19 block. From the second output G1PSP2 20 through the inverter 21 to the third control input of the PAPr2 22, the elements of the inverted first SRP control the switching of the outputs of the orthogonally polarized receiving antennas APr1 17 and APr2 18 in the PAPr2 22 block. The signal at the output of PAPr2 19 will be only when a unit from the first IP is transferred, while the output of PAPr2 22 will be locked. When transmitting zero to the first SP, the signal appears at the output of PAPr2 22, and the output of the PAPr1 19 block is locked. At the same time, from the first and second outputs of G2PSP2 49, the elements of the second PSP are received at the first inputs of BP18 46 and BP19 51, the elements of the first Walsh code are sent to the second input of BP18 46 from the output of G1KU2 47, the elements of the second code are received to the second input of BP19 51 from the output of G2KU2 52 Walsh; from the first outputs of BP18 46 and BP19 51, the results of multiplication are supplied respectively to the second inputs of BP16 44 and BP17 45, and from the second outputs of BP18 46 and BP19 51, the same results are transmitted to the second inputs of BP22 55 and BP20 53, respectively. From the first and second outputs of GNK2 48, the carrier oscillation arrives at the first inputs of BP16 44, BP17 45 and BP20 53, BP22 55, respectively. From the outputs of BP16 44, BP17 45 and BP22 55, BP20 53 to the second inputs of BP7 23, BP9 28 and BP11 33, BP13 38, respectively scalar reference signals are received respectively of the first, second and third, fourth signal channels All of them, which together with the results of controlling the first SRP and its inversion by switching the outputs of the antennas APr1 17 and APr2 18 to PAPr1 19, PAPr2 22 form the vector reference signal of the receiving antenna system. At the same time, from the first and second outputs of the GIM 50, the second inputs of the BP15 43 and BP21 54 blocks respectively receive a meander-type pulse with a period of T ₀ , the first inputs BP15 43 and BP21 54 from the outputs BP16 44 and BP20 53 respectively receive scalar reference signals the first and fourth signal channels. Then, from the first and second outputs of BP15 43, the second inputs of BP8 26 and BP12 36 respectively receive a scalar reference signal for the first and third reference channels corresponding to the first and third signal channels. From the first and second outputs of BP21 54, the second inputs of BP10 31 and BP14 41 respectively receive a scalar reference signal for the second and fourth reference channels corresponding to the second and fourth signal channels. From the outputs of BS1 24 and BS2 27, respectively, the first and second inputs of BV1 25 will receive the results of correlation processing of the useful signal in the first signal and first reference channels, the result of subtracting from the output of BV1 25 is fed to the second input of the calculator 56. Similarly, the results of subtracting the output effects of the signal and corresponding they support channels from the outputs of blocks BV2 30, BV3 35 and BV4 40 respectively received at the first, fourth and third inputs of the calculator 56, in which operations (82), operations of taking a sign for the output effect each signal channel and operation (55), (56). As a result, at the first, second and third outputs of the calculator 56, the transmitted symbols of the corresponding first, second and third IP are obtained, and in the case of implementing the method according to claims 1, 2, they are transmitted to the recipient of information. In the case of implementing the method according to claims 1, 3, the signals from the outputs of the calculator 56 are fed to the corresponding inputs of the demultiplexer 59, the output of which is the transmitted source IP, which is fed to the recipient of information.

The operation of the device with which the proposed method is implemented, in the case of signal-like interference or in case of distortion of the polarization structure of the elements of the broadband signal, is described similarly.

The calculator 56 can be implemented on a specialized microcontroller, the implementation of the remaining blocks is not difficult, because they are widely described in the technical literature.

Thus, the device for implementing the proposed method allows to fulfill all the requirements of the proposed method and provides, in comparison with the prototype method, an increase in the number of subscribers by K / 2 times, the transmission of three information symbols from three different information sequences with one vector signal, and erasing erroneous channel symbols at large polarization distortion signals.

Claims (3)

1. A method of radio communication with multiple access, including on the transmitting side - generating a carrier wave for transmitting a useful signal, generating the first and second pseudorandom sequences (SRP) of the same length, but with a different set of elements, obtaining binary first and second information sequences (IP), consisting of bipolar pulses of the same duration, but with a different set of elements, multiplying the second PSP with the symbols of the second PI, resulting in a second PSP modulated by sim olami second SP, the first multiplication with the first CAP SP symbols, resulting in a first memory bandwidth modulated symbols for the first SP control polarization states of the second elements of information symbols SP; on the receiving side — generating a copy of the carrier wave, a copy of the first SRP and its inversion, a copy of the second SRP, video pulses of the meander type with a period equal to the duration of the information pulses, characterized in that on the transmitting side the first and second SRP are non-linear, simultaneously with the first and second PIs receive a binary third PI, consisting of bipolar pulses of the same duration as the first and second PI, but with a different set of elements, then in the third PI negative pulses are converted to the zero level, as a result what the third IP is received in the form of a stream of unipolar pulses, generate two Walsh codes from one ensemble of the same duration as the first and second PSP, multiply the first Walsh code with the symbols of the third IP, and the second Walsh code with the symbols of the inverted third IP, then the results of the above multiplications are combined, resulting in a third PI modulated by two Walsh codes, which is then multiplied with the previously obtained multiplication result of the second PSP with the symbols of the second PI, resulting in the derivative SRP with correlation properties of the second SRP, which is the generating one, which modulate the carrier wave, as a result of which a useful signal is obtained, which is a broadband phase-shifted vector signal carrying a channel symbol with eight possible states, corresponding to information symbols of the second and third PI, the elements of which are then transmitted to the channel communication on orthogonal polarizations according to the pseudo-random law in accordance with the first SRP; on the receiving side, a copy of the first SRP and its inversion are used to coordinate the polarization states of the elements of the vector reference signal with the polarization states of the elements of the incoming vector useful signal, at the same time, a copy of the second SRP is multiplied with copies of the first and second Walsh codes, a copy of the carrier wave is modulated by the multiplication results, modulation results are used as scalar reference signals in the correlation processing of the useful signal to extract information units and zeros in the first, second, and third PIs in four signal channels in accordance with the reconstruction table, simultaneously, meander-type video pulses modulate the scalar reference signals of the signal channels, resulting in scalar reference signals for correlation processing of the useful signal in the four reference channels corresponding to the four signal channels, at the same time, in four reference channels, parts of signal-like interference are distinguished, correlated with the useful signal in the corresponding signal channels, and subtracted from the input effects of these signal channels, subtract the output effects of the first and third, second and fourth signal channels from each other in pairs, if they are equal, the output effects nullify, which is equivalent to erasing the channel symbols, if they are not equal, then the smaller of them nullifies, and the larger one is left unchanged with the sign, then the operation of taking the sign of the output effects of the signal channels is carried out and a channel symbol is obtained in the form of a column, it is multiplied with a 4 × 4 unit matrix, the number is determined nth column of the identity matrix, in which the result of the multiplication is nonzero, find the same column number in the aforementioned recovery table, in this column of the recovery table find a value equal to the result of multiplying the accepted column and the identity matrix column, and in accordance with this, the characters of the first , second and third IP, corresponding to the transmitted. 2. The method according to claim 1, characterized in that on the transmitting side, the binary first, second, and third PIs are received from three different sources of bipolar pulses, while on the receiving side, the symbols of the first, second, and third PIs found in the recovery table are supplied to the information recipient. 3. The method according to claim 1, characterized in that on the transmitting side, the binary first, second and third IP are obtained by multiplexing the binary source IP in the form of bipolar pulses from one source; at the same time, on the receiving side, from the characters of the first, second, and third IP found in the symbol recovery table, the initial IP is received by the demultiplexing operation, which is supplied to the information recipient.

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