CN105471803A - Millimeter wave high speed modulation and demodulation system and method based on antenna array - Google Patents
Millimeter wave high speed modulation and demodulation system and method based on antenna array Download PDFInfo
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Abstract
The invention discloses a millimeter wave high speed modulation and demodulation system and method based on an antenna array. Orbital angular momentum is used as a new information bearing dimension to carry out composite modulation with a traditional modulation dimension, including composite modulation of the orbital angular momentum and a phase, composite modulation of the orbital angular momentum and an amplitude and composite modulation of the orbital angular momentum, the amplitude and the phase. The system structure comprises: a modulator used for modulating a signal which has been mapped into the change of the orbital angular momentum, the amplitude or the phase onto a millimeter wave; a transmitting antenna array used for making millimeter wave radiation form a vortex electromagnetic wave signal; a receiving antenna array used for receiving the vortex electromagnetic wave signal; and a demodulation unit used for demodulating the vortex electromagnetic wave signal into an original digital signal. According to the millimeter wave high speed modulation and demodulation system and method disclosed by the invention, the infinite orthogonality of the vortex wave orbital angular momentum is used for expanding the transmission capacity and improving the spectrum efficiency. Meanwhile, the orbital angular momentum is used for bearing information, which is expected to break through the limitation of narrow improvement space and low spectrum efficiency in the development of the traditional modulation dimension.
Description
Technical field
The present invention relates to wireless communication technology field, in particular a kind of millimeter wave high-speed modulate and demodulate system and method based on antenna array.
Background technology
Millimeter wave refers to the electromagnetic wave of wavelength at 1-10mm, and its wavelength is between microwave and infrared ray, and frequency range is 30 ~ 300GHz, has extremely wide bandwidth, and its wave beam wants much narrow compared with microwave, and identifiable design ability is stronger.It should be noted that the impact of millimeter wave suffered weather when free-space propagation is less, be conducive to signal propagation in free space.The very significant development trend of modern communication technology is towards broadband development, and this contributes to improving traffic rate, and realize high-speed communication, the millimeter wave with pole wide bandwidth is undoubtedly its good cutting point.And millimeter wave loss is also very little in a fiber, contribute to realizing long haul communication and improve communication quality.
Traditional communication modulation/demodulation techniques mainly concentrate on amplitude modulation, frequency modulation, phase modulation and the QPSK (QuadraturePhaseShiftKeyin developed by it, i.e. Quadrature Phase Shift Keying), QAM(QuadratureAmplitudeModulation, i.e. quadrature amplitude modulation), OFDM(OrthogonalFrequencyDivisionMultiplexing, i.e. OFDM) etc. on more modulation/demodulation mode.In essence, its modulation/demodulation methods is all realize based on frequency, phase place, amplitude and polarization state four dimensions, and its implementation is ripe, structure is simple, but its development space is limited.On overall, traditional modulation/demodulation methods cannot break away from the restriction of traditional communication dimension, its modulating/demodulating mode remains for amplitude, frequency, phase place and polarization state carry out designing, cannot realize the high-speed transfer of the communication information and the multiplication of message capacity, its communication quality also cannot well be improved.
Orbital angular momentum communication, as a kind of novel communication technology, now extensively receives the concern of researchers, but a lot of problem all could not be well solved up to now.Orbital angular momentum mainly contains two kinds in the application of communication aspects, and one is the modulation of vortex state, and another kind is that vortex state is multiplexing.Because the transmission in monomode fiber of orbital angular momentum pattern can sustain damage, on domestic and international most of orbital angular momentum Communication Studies is that vortex state is multiplexing, the application of vortex state modulation is made slow progress.
Therefore, prior art has yet to be improved and developed.
Summary of the invention
In view of above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of millimeter wave high-speed modulate and demodulate system and method based on antenna array, being intended to solve modulating/demodulating mode in prior art remains for amplitude, frequency, phase place and polarization state carry out designing, cannot realize the high-speed transfer of the communication information and the multiplication of message capacity, its communication quality also cannot obtain the defect well improved.
Technical scheme of the present invention is as follows:
Based on a millimeter wave high-speed modulate and demodulate system for antenna array, wherein, comprising:
Modulator, for the signal madulation of the change by being mapped as orbital angular momentum, amplitude or phase place to millimeter wave;
Launching antenna array, for forming vortex electromagnetic wave signal by millimeter-wave radiation;
Receiving antenna array, for receiving vortex electromagnetic wave signal;
Demodulating unit, for being demodulated into raw digital signal by vortex electromagnetic wave signal.
The described millimeter wave high-speed modulate and demodulate system based on antenna array, wherein, also comprises:
The described millimeter wave high-speed modulate and demodulate system based on antenna array, wherein, described modulator is be modulated to integrated modulator on optics millimeter wave or the electric modulator be modulated on millimeter wave for carrying out electrical domain modulation to the signal of the change being mapped as orbital angular momentum, amplitude or phase place for carrying out area of light modulation to the signal of the change being mapped as orbital angular momentum, amplitude or phase place.
The described millimeter wave high-speed modulate and demodulate system based on antenna array, wherein, described modulator will be mapped as the signal madulation of the change of orbital angular momentum, amplitude or phase place on millimeter wave by millimeter wave orbital angular momentum phase place complex modulated, millimeter wave orbital angular momentum amplitude complex modulated or millimeter wave orbital angular momentum amplitude-phase complex modulated.
Based on a millimeter wave high-speed modulate and demodulate method for antenna array, wherein, comprise the following steps:
A, modulator will be mapped as the signal madulation of the change of orbital angular momentum, amplitude or phase place on millimeter wave, and millimeter wave is transferred to launching antenna array;
Millimeter-wave radiation is formed vortex electromagnetic wave signal by B, launching antenna array;
C, receiving antenna array receive vortex electromagnetic wave signal, and vortex electromagnetic wave signal is transferred to demodulating unit;
D, demodulating unit receive vortex electromagnetic wave signal, and vortex electromagnetic wave signal is demodulated into raw digital signal.
The described millimeter wave high-speed modulate and demodulate method based on antenna array, wherein, described steps A specifically comprises:
A11, by the data bit flow of digital signal map be mapped as complex signal according to 16 rank orbital angular momentum-phase signal planispheres;
A12, complex signal is transferred to launching antenna array.
The described millimeter wave high-speed modulate and demodulate method based on antenna array, wherein, described steps A specifically comprises:
A21, by the data bit flow of digital signal map be mapped as complex signal according to 16 rank orbital angular momentum-range signal planispheres;
A22, complex signal is transferred to launching antenna array.
The described millimeter wave high-speed modulate and demodulate method based on antenna array, wherein, described steps A specifically comprises:
A31, be three dimensional signal by the data bit flow of digital signal according to 64 rank orbital angular momentums-Amplitude-Phase signal constellation (in digital modulation) simplifying plan;
A32, three dimensional signal is transferred to launching antenna array.
The described millimeter wave high-speed modulate and demodulate method based on antenna array, wherein, described step D specifically comprises:
D1, demodulating unit receive vortex electromagnetic wave signal, and stress release treatment also carries out Fourier transform and obtains phase information, or phase information and amplitude information;
D2, according to the average phase-difference of antenna each in receiving antenna array determine topology close number;
D3, close number determination complex signal according to described phase information, amplitude information, topology;
D4, according to signal constellation (in digital modulation) figure by complex signal reduction obtain raw digital signal.
The described millimeter wave high-speed modulate and demodulate method based on antenna array, wherein, described signal constellation (in digital modulation) figure is 16 rank orbital angular momentum-phase signal planispheres, 16 rank orbital angular momentum-range signal planispheres or 64 rank orbital angular momentum-Amplitude-Phase signal constellation (in digital modulation) figure.
Beneficial effect: the millimeter wave high-speed modulate and demodulate system and method based on antenna array of the present invention, make full use of the unlimited orthogonality of vortex wave trajectory angular momentum, expanding communication capacity and the raising availability of frequency spectrum, its demodulation mode also can realize simplifying simultaneously.Utilize this new degree of freedom of orbital angular momentum to carry out beared information simultaneously, breach the restriction that the upper room for promotion of conventional modulated dimension development is narrow and the availability of frequency spectrum is low.
Accompanying drawing explanation
Fig. 1 is the structural representation of millimeter wave high-speed modulate and demodulate system first preferred embodiment based on antenna array of the present invention.
Fig. 2 is the structural representation of millimeter wave high-speed modulate and demodulate system second preferred embodiment based on antenna array of the present invention.
Fig. 3 is the flow chart of the millimeter wave high-speed modulate and demodulate method preferred embodiment based on antenna array of the present invention.
Fig. 4 is 16 rank orbital angular momentum-phase signal planispheres in the present invention.
Fig. 5 is 16 rank orbital angular momentum-range signal planispheres in the present invention.
Fig. 6 is 64 rank orbital angular momentum-amplitude-phase signal planispheres in the present invention.
Embodiment
The invention provides a kind of millimeter wave high-speed modulate and demodulate system and method based on antenna array, for making object of the present invention, technical scheme and effect clearly, clearly, the present invention is described in more detail below.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
Refer to Fig. 1, for being the structural representation of millimeter wave high-speed modulate and demodulate system first preferred embodiment based on antenna array of the present invention.As shown in Figure 1, the described millimeter wave high-speed modulate and demodulate system based on antenna array comprises modulator 100, for the signal madulation of the change by being mapped as orbital angular momentum, amplitude or phase place to millimeter wave; Launching antenna array 200, for forming vortex electromagnetic wave signal by millimeter-wave radiation; Receiving antenna array 300, for receiving vortex electromagnetic wave signal; Demodulating unit 400, for being demodulated into raw digital signal by vortex electromagnetic wave signal.
In embodiments of the invention, the integrated modulator of described modulator 100 for being modulated on optics millimeter wave for carrying out area of light modulation to the signal of the change being mapped as orbital angular momentum, amplitude or phase place, or the electric modulator be modulated on millimeter wave for carrying out electrical domain modulation to the signal of the change being mapped as orbital angular momentum, amplitude or phase place.
When described modulator 100 is integrated modulator, as shown in Figure 1, then the described millimeter wave high-speed modulate and demodulate system based on antenna array also comprises optical detection unit 500, obtains phase place and the intensity of optics millimeter wave for beat frequency.When described modulator 100 is electric modulator, as shown in Figure 2, then without the need to described based on the millimeter wave high-speed modulate and demodulate system of antenna array in optical detection unit 500 is set.
The CDAA circularly disposed antenna array that described launching antenna array 200 and receiving antenna array 300 are all made up of n antenna, the equidistant circular arrangement of antenna in CDAA circularly disposed antenna array, (n/2+1) that adopt the CDAA circularly disposed antenna array of n antenna most multipotency generation topological charge number to be respectively (0 ~ n/2) plants vortex ripple, and wherein n is greater than 2.
When being millimeter wave by digital signal modulated in modulator 100, following three kinds of modes can be adopted:
First kind of way is millimeter wave orbital angular momentum phase place complex modulated, namely first the data bit flow of digital signal is mapped as complex signal, again complex signal is modulated in orbital angular momentum entrained by vortex millimeter wave and phase place two degrees of freedom by certain mode, both realizations complex modulated.
The second way is millimeter wave orbital angular momentum amplitude complex modulated, namely the data bit flow of digital signal is mapped as complex signal, again complex signal is modulated in orbital angular momentum entrained by vortex millimeter wave and amplitude two degrees of freedom by certain mode, both realizations combined modulation.
The third mode is millimeter wave orbital angular momentum amplitude-phase complex modulated, namely the data bit flow of digital signal is mapped as three dimensional signal, again three dimensional signal is modulated on orbital angular momentum, phase place and the amplitude three degree of freedom entrained by vortex millimeter wave by certain mode, realizes three's complex modulated.
Except the method for above-described three kinds of complex modulated, orbital angular momentum combined modulation method can combine with the method for conventional modulating/demodulating and derive more at a high speed effectively modulation/demodulation methods, as 16QAM-OFDM, QPSK merges modulation, its detailed process comprises two parts: Part I first carries out QAM mapping baseband signal, then is converted to ofdm signal; Part II is then by one section of new signal, is mapped as QPSK signal; Finally two parts of signals is synthesized, be modulated on vortex millimeter wave and carry out, at receiving terminal, corresponding demodulation is carried out to it.
Orbital angular momentum is as a new dimension, it is the dimension independent of electromagnetic wave phase place, amplitude, frequency and polarization state, orbital angular momentum and other dimension is adopted to carry out complex modulated, the electromagnetic advantage of vortex can be made full use of, greatly improve frequency range utilance, increase wireless communication transmissions capacity and transmission rate.
The experiment proved that, utilize electromagnetic orbital angular momentum significantly can promote the capacity of radio communication.By encoding to electromagnetic different orbital angular momentum, even if in actual environment, also can realize same frequency transmission multiline message, this just likely significantly promotes existing wireless communication capacity.
Based on said system embodiment, present invention also offers a kind of millimeter wave high-speed modulate and demodulate method based on antenna array, as shown in Figure 3, comprise the following steps:
Step S100, modulator will be mapped as the signal madulation of the change of orbital angular momentum, amplitude or phase place on millimeter wave, and millimeter wave is transferred to launching antenna array;
Millimeter-wave radiation is formed vortex electromagnetic wave signal by step S200, launching antenna array;
Step S300, receiving antenna array receive vortex electromagnetic wave signal, and vortex electromagnetic wave signal is transferred to demodulating unit;
Step S400, demodulating unit receive vortex electromagnetic wave signal, and vortex electromagnetic wave signal is demodulated into raw digital signal.
In described step S100, the signal madulation being mapped as the change of orbital angular momentum, amplitude or phase place is at least comprised three kinds of embodiments to millimeter wave.
The first embodiment comprises the following steps:
Step S111, by the data bit flow of digital signal map be mapped as complex signal according to 16 rank orbital angular momentum-phase signal planispheres;
Step S112, complex signal is transferred to launching antenna array.
The second embodiment comprises the following steps:
Step S121, by the data bit flow of digital signal map be mapped as complex signal according to 16 rank orbital angular momentum-range signal planispheres;
Step S122, complex signal is transferred to launching antenna array.
The third embodiment comprises the following steps:
Step S131, to be mapped by the data bit flow of digital signal be three dimensional signal according to 64 rank orbital angular momentums-Amplitude-Phase signal constellation (in digital modulation) simplifying plan;
Step S132, three dimensional signal is transferred to launching antenna array.
Visible, the first embodiment corresponding millimeter wave orbital angular momentum phase place complex modulated method, the second embodiment corresponding millimeter wave orbital angular momentum amplitude complex modulated method, the third embodiment corresponding millimeter wave orbital angular momentum amplitude-phase complex modulated method.
Technical scheme for a more clear understanding of the present invention, illustrates below by specific embodiment.
Embodiment one:
As shown in Figure 4, it is 16 rank orbital angular momentum-phase signal planispheres in the present invention.Carry the distinctive orbital angular momentum information of vortex millimeter wave and corresponding phase information by the vortex electromagnetic wave signal of launching antenna array 200 gusts of radiation, be equivalent to digital signal modulated in the room and time dimension of vortex millimeter wave phase place.The 16 rank orbital angular momentum-phase signal planispheres of the data bit flow of digital signal according to Fig. 4 are mapped as complex signal, complex signal imaginary part and value of real part size desirable ± 1 in theory by orbital angular momentum phase place complex modulated part, ±
deng n value, complex signal imaginary values is mapped as 0 respectively,
,
,
phase difference, value of real part is mapped as the constant phase difference of n road millimeter-wave signal
(l is topological charge number), different topology lotus number vortex ripple is formed for driving the launching antenna array 200 of annular, and use integrated modulator to be modulated on optics millimeter wave, optical detection unit 500 beat frequency obtains phase information, produces vortex electromagnetic wave carry out information transmission by launching antenna array 200 radiation.
Receiving antenna array 300 adopts the CDAA circularly disposed antenna array of n antenna composition to receive vortex electromagnetic wave signal.Signal receiving is carried out by demodulating unit 400 after receiving antenna array 300 Received signal strength, demodulating unit 400 stress release treatment interference to received signal is also carried out Fourier conversion (i.e. Fourier transform) to it and is extracted phase information, by calculating the average phase-difference between each receiving terminal
, determine that topology closes number thus
(l is topological charge number, and n is antenna number).The phase information of obtained identical topological charge values is compared, calculates the imaginary values of complex signal, finally complex signal is reduced to raw digital signal according to 16 rank orbital angular momentum-phase signal planispheres.
Embodiment two:
As shown in Figure 5, it is 16 rank orbital angular momentum-range signal planispheres in the present invention.Embodiment two is the change data bit flow of digital signal being mapped as orbital angular momentum-amplitude, by digital signal modulated to the orbital angular momentum and amplitude of vortex millimeter wave with the difference of embodiment one.Orbital angular momentum amplitude complex modulated part, is mapped as complex signal by the data bit flow of digital signal, complex signal imaginary part and value of real part size desirable ± 1 in theory, and ± 2 ... ±
deng n value, complex signal imaginary values is mapped as corresponding amplitude size, and value of real part is mapped as the constant phase difference of n road millimeter-wave signal
(l is topological charge number), different topology lotus number vortex ripple is formed for driving the launching antenna array 200 of annular, and use integrated modulator to be modulated on optics millimeter wave, optical detection unit 500 beat frequency obtains phase place and strength information, produces by launching antenna array 200 radiation the transmission that vortex electromagnetic wave carries out information.
Receiving antenna array 300 adopts the CDAA circularly disposed antenna array of n antenna composition to receive vortex electromagnetic wave signal.Signal receiving is carried out by demodulating unit 400 after reception antenna Received signal strength, demodulating unit 400 stress release treatment interference to received signal is also carried out Fourier conversion (i.e. Fourier transform) to it and is extracted phase place and amplitude information, by calculating the average phase-difference between each receiving terminal
, determine that topology closes number thus
(l is topological charge number, and n is antenna number).Amplitude and phase place are combined and obtains complex signal, be reduced to raw digital signal again according to 16 rank orbital angular momentum-range signal planispheres.
Embodiment three:
As shown in Figure 6, it is 64 rank orbital angular momentum-amplitude-phase signal planispheres in the present invention.Embodiment three is with the difference of embodiment one, two change data bit flow of digital signal being mapped as orbital angular momentum-amplitude-phase place, by the space of digital signal modulated to vortex millimeter wave phase place, on time dimension and amplitude thereof.(namely orbital angular momentum-amplitude-phase place complex modulated part, be mapped as three dimensional signal the data bit flow of digital signal
), i, j, k tri-dimension values sizes desirable ± 1 in theory, ± 2 ... ±
deng n value, the value in i dimension is mapped as 0 respectively,
,
,
phase difference, the value in j dimension is mapped as the constant phase difference of n road millimeter-wave signal
(l is topological charge number), different topology lotus number vortex ripple is formed for driving the launching antenna array 200 of annular, value in z dimension is the mapping pair amplitude size of answering respectively, and use integrated modulator by three's complex modulated on optics millimeter wave, optical detection unit 500 beat frequency obtains n road phase place strength information, produces vortex millimeter wave carry out information transmission by launching antenna array 200 radiation.
Receiving antenna array 300 adopts the CDAA circularly disposed antenna array of n antenna composition to receive vortex electromagnetic wave signal.Signal receiving is carried out by demodulating unit 400 after reception antenna Received signal strength, demodulating unit 400 stress release treatment interference to received signal is also carried out Fourier conversion (i.e. Fourier transform) to it and is extracted phase place and amplitude information, by calculating the average phase-difference between each receiving terminal
determine that topology closes number
(l is topological charge number, and n is antenna number).The phase information of obtained identical topological charge values is compared, calculates the i dimension values of three dimensional signal, then 64 rank orbital angular momentums-Amplitude-Phase signal constellation (in digital modulation) figure is reduced to raw digital signal.
Embodiment four:
Carry the distinctive orbital angular momentum information of vortex millimeter wave and corresponding phase information by the vortex millimeter-wave signal of launching antenna array 200 radiation, be equivalent to digital signal modulated in the room and time dimension of vortex millimeter wave phase place.Modulation/demodulation methods and the embodiment one of embodiment four are similar, difference is that millimeter-wave signal produces in the electrical domain, electric modulator is adopted to be modulated on millimeter wave, transmitting terminal is without the need to adopting photoelectric detection unit 500 beat frequency, and receiving terminal is received by the receiving antenna array 300 of annular and uses demodulating unit 400 to realize demodulation.
Embodiment five:
Embodiment five is the change data bit flow of digital signal being mapped as orbital angular momentum-amplitude, by digital signal modulated to the orbital angular momentum and amplitude of vortex millimeter wave with the difference of embodiment four.Modulation/demodulation methods and the embodiment two of embodiment five are similar, difference is that millimeter-wave signal produces in the electrical domain, electric modulator is adopted to be modulated on millimeter wave, transmitting terminal is without the need to adopting photoelectric detection unit 500 beat frequency, and receiving terminal is received by the receiving antenna array 300 of annular and uses demodulating unit 400 to realize demodulation.
Embodiment six:
Embodiment six is with the difference of embodiment four, five change data bit flow of digital signal being mapped as orbital angular momentum-amplitude-phase place, by the space of digital signal modulated to vortex millimeter wave phase place, on time dimension and amplitude thereof.Modulation/demodulation methods and the embodiment three of embodiment six are similar, difference is that millimeter-wave signal produces in the electrical domain, electric modulator is adopted to be modulated on millimeter wave, transmitting terminal is without the need to adopting photoelectric detection unit 500 beat frequency, and receiving terminal is received by the receiving antenna array 300 of annular and uses demodulating unit 400 to realize demodulation.
In sum, the millimeter wave high-speed modulate and demodulate system and method based on antenna array of the present invention, comprising: modulator, for the signal madulation of the change by being mapped as orbital angular momentum, amplitude or phase place to millimeter wave; Launching antenna array, for forming vortex electromagnetic wave signal by millimeter-wave radiation; Receiving antenna array, for receiving vortex electromagnetic wave signal; Demodulating unit, for being demodulated into raw digital signal by vortex electromagnetic wave signal.The present invention utilizes the unlimited orthogonality of vortex wave trajectory angular momentum, expanding communication capacity and the raising availability of frequency spectrum.Utilize this new degree of freedom of orbital angular momentum to carry out beared information simultaneously, breach the restriction that the upper room for promotion of conventional modulated dimension development is narrow and the availability of frequency spectrum is low.
Should be understood that, application of the present invention is not limited to above-mentioned citing, for those of ordinary skills, can be improved according to the above description or convert, and all these improve and convert the protection range that all should belong to claims of the present invention.
Claims (10)
1., based on a millimeter wave high-speed modulate and demodulate system for antenna array, it is characterized in that, comprising:
Modulator, for the signal madulation of the change by being mapped as orbital angular momentum, amplitude or phase place to millimeter wave;
Launching antenna array, for forming vortex electromagnetic wave signal by millimeter-wave radiation;
Receiving antenna array, for receiving vortex electromagnetic wave signal;
Demodulating unit, for being demodulated into raw digital signal by vortex electromagnetic wave signal.
2., according to claim 1 based on the millimeter wave high-speed modulate and demodulate system of antenna array, it is characterized in that, also comprise:
Optical detection unit, obtains phase place and the intensity of optics millimeter wave for beat frequency.
3. according to claim 1 based on the millimeter wave high-speed modulate and demodulate system of antenna array, it is characterized in that, described modulator is be modulated to integrated modulator on optics millimeter wave or the electric modulator be modulated on millimeter wave for carrying out electrical domain modulation to the signal of the change being mapped as orbital angular momentum, amplitude or phase place for carrying out area of light modulation to the signal of the change being mapped as orbital angular momentum, amplitude or phase place.
4. according to claim 1 based on the millimeter wave high-speed modulate and demodulate system of antenna array, it is characterized in that, described modulator will be mapped as the signal madulation of the change of orbital angular momentum, amplitude or phase place on millimeter wave by millimeter wave orbital angular momentum phase place complex modulated, millimeter wave orbital angular momentum amplitude complex modulated or millimeter wave orbital angular momentum amplitude-phase complex modulated.
5., based on a millimeter wave high-speed modulate and demodulate method for antenna array, it is characterized in that, comprise the following steps:
A, modulator will be mapped as the signal madulation of the change of orbital angular momentum, amplitude or phase place on millimeter wave, and millimeter wave is transferred to launching antenna array;
Millimeter-wave radiation is formed vortex electromagnetic wave signal by B, launching antenna array;
C, receiving antenna array receive vortex electromagnetic wave signal, and vortex electromagnetic wave signal is transferred to demodulating unit;
D, demodulating unit receive vortex electromagnetic wave signal, and vortex electromagnetic wave signal is demodulated into raw digital signal.
6., according to claim 5 based on the millimeter wave high-speed modulate and demodulate method of antenna array, it is characterized in that, described steps A specifically comprises:
A11, by the data bit flow of digital signal map be mapped as complex signal according to 16 rank orbital angular momentum-phase signal planispheres;
A12, complex signal is transferred to launching antenna array.
7., according to claim 5 based on the millimeter wave high-speed modulate and demodulate method of antenna array, it is characterized in that, described steps A specifically comprises:
A21, by the data bit flow of digital signal map be mapped as complex signal according to 16 rank orbital angular momentum-range signal planispheres;
A22, complex signal is transferred to launching antenna array.
8., according to claim 5 based on the millimeter wave high-speed modulate and demodulate method of antenna array, it is characterized in that, described steps A specifically comprises:
A31, to be mapped by the data bit flow of digital signal be three dimensional signal according to 64 rank orbital angular momentums-Amplitude-Phase signal constellation (in digital modulation) simplifying plan;
A32, three dimensional signal is transferred to launching antenna array.
9., according to claim 5 based on the millimeter wave high-speed modulate and demodulate method of antenna array, it is characterized in that, described step D specifically comprises:
D1, demodulating unit receive vortex electromagnetic wave signal, and stress release treatment also carries out Fourier transform and obtains phase information, or phase information and amplitude information;
D2, according to the average phase-difference of antenna each in receiving antenna array determine topology close number;
D3, close number determination complex signal according to described phase information, amplitude information, topology;
D4, according to signal constellation (in digital modulation) figure by complex signal reduction obtain raw digital signal.
10. according to claim 9 based on the millimeter wave high-speed modulate and demodulate method of antenna array, it is characterized in that, described signal constellation (in digital modulation) figure is 16 rank orbital angular momentum-phase signal planispheres, 16 rank orbital angular momentum-range signal planispheres or 64 rank orbital angular momentum-Amplitude-Phase signal constellation (in digital modulation) figure.
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| CN109450497A (en) * | 2018-11-28 | 2019-03-08 | 中国运载火箭技术研究院 | A kind of jam-resistant communication system based on vortex electromagnetic wave |
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| CN113271154A (en) * | 2021-04-23 | 2021-08-17 | 南京大学 | Multi-path spatial multiplexing acoustic communication method and system based on composite distorted sound waves |
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| CN114389929A (en) * | 2022-03-23 | 2022-04-22 | 广东省新一代通信与网络创新研究院 | Three-dimensional modulation and demodulation method and system for high-speed transmission of base station |
| CN114389929B (en) * | 2022-03-23 | 2022-06-07 | 广东省新一代通信与网络创新研究院 | Three-dimensional modulation and demodulation method and system for high-speed transmission of base station |
| CN114895239A (en) * | 2022-03-31 | 2022-08-12 | 北京建筑大学 | Fractional order Kalman filtering positioning method, device and system for millimeter vortex beam |
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