CN110855341A - Integrated beam forming and signal modulation method based on digital programmable super surface - Google Patents
Integrated beam forming and signal modulation method based on digital programmable super surface Download PDFInfo
- Publication number
- CN110855341A CN110855341A CN201911069359.3A CN201911069359A CN110855341A CN 110855341 A CN110855341 A CN 110855341A CN 201911069359 A CN201911069359 A CN 201911069359A CN 110855341 A CN110855341 A CN 110855341A
- Authority
- CN
- China
- Prior art keywords
- super surface
- digital programmable
- programmable super
- modulation
- method based
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0617—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal for beam forming
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
- H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Transducers For Ultrasonic Waves (AREA)
Abstract
The invention discloses an integrated beam forming and signal modulation method based on a digital programmable super surface, which completes beam forming by controlling the distribution of the oral surface code of the digital programmable super surface on the space, wherein the oral surface code is formed by combining different states of all super surface units in the digital programmable super surface; and the modulation of the signal is completed by controlling the switching sequence of different face codes on time.
Description
Technical Field
The invention relates to the technical field of signal modulation, in particular to an integrated beamforming and signal modulation technical method based on a digital programmable super surface.
Background
In conventional radio subsystems, the modulation of signals and the beam steering of electromagnetic waves are done by different modules. Generally, the modulation of the signal is done in the baseband part, while the beam steering of the electromagnetic wave is done in the radio frequency part.
Disclosure of Invention
The invention aims to provide an integrated signal modulation and beam control technology based on a digital programmable super surface, which simplifies the traditional communication architecture and greatly improves the flexibility of the system.
The technical scheme is as follows: an integrated beam forming and signal modulation method based on a digital programmable super surface comprises the following steps:
beam forming is completed by controlling the distribution of the oral surface code of the digital programmable super surface on the space, wherein the oral surface code is formed by combining different states of all super surface units in the digital programmable super surface;
and the modulation of the signal is completed by controlling the switching sequence of different face codes on time.
Further, the step of obtaining the orofacial code of the digitally programmable super surface comprises:
defining the far field generated by the digital programmable super surface as a plane wave, and carrying out Fourier transform on the far field
Obtaining a mouth-face field of the digital programmable super surface;
dispersing the obtained oral surface field of the digital programmable super surface to obtain oral surface codes;
in the formula (I), the compound is shown in the specification,
representing the designated far-field,
representing the modulation terms, α representing the amplitude modulation,representing phase modulation.
Further, the step 2 specifically comprises: by adjusting
The value of (c) controls the beam phase.
Further, the far field generated by the digitally programmable super surface is defined as a directional plane wave:the beam phase of which is specifiedAnd the phase modulation of the directional beam and the beam is completed.
Further, the far field generated by the digitally programmable super surface is defined as two plane waves pointing in different directions:
specifyingAnd
the values of (a) and (b) control the phases of the two beams independently, respectively, to accomplish independent modulation of the dual directional beams and the phases of the different beams.
Has the advantages that: compared with the prior art, the invention realizes integrated beam forming and signal modulation by controlling the distribution of the digital programmable super-surface orofacial codes on space and the switching sequence of time, simplifies the traditional communication architecture, greatly improves the flexibility of the system, promotes the multifunctional, integrated and intelligent development of the current information system, and has innovative application prospect.
Drawings
FIG. 1 is a schematic diagram of a digitally programmable super surface;
FIG. 2 is a schematic diagram of the directional beam and the phase modulation of the beam of example 1;
fig. 3 is the dual directional beam and independent modulation of the different beam phases of example 2.
Detailed Description
The invention is further illustrated below with reference to the figures and examples.
The invention provides an integrated signal modulation and beam control technology based on a digital programmable super surface. Specifically, beam control is realized by designing a digital super-surface mouth-face code; meanwhile, different face-to-face codes are switched in the time domain, and the modulation of signals can be realized. Based on the technology disclosed by the invention, the integration of signal modulation and beam control can be realized, so that the traditional communication architecture is simplified, the flexibility of the system is greatly improved, and the method has innovative application prospect.
Fig. 1 is a schematic diagram of a programmable super-surface, in which each small square represents a super-surface unit, different colors represent different states of the units, different states of all the super-surface units are combined to form a face-to-face code of the super-surface unit, and integrated signal modulation and beam control can be realized by designing spatial distribution of the codes and a time switching sequence.
Far field of an oral surface according to the Huygens-Fresnel diffraction theoremCan be controlled by the near field of mouth surface
Is obtained by inverse fourier transform. Since the oral surface field of the digitally programmable super surface is digitally discrete, the oral surface field can be denoted as U (m Δ x, n Δ y, k Δ t), where m Δ x and n Δ y represent the coordinates of the unit on the oral surface and k Δ t represents the time at which the oral surface is encoded. For simplicity, the orofacial field is further denoted as U (m, n, k) and its corresponding far field is denoted as U (m, n, k)
If the far field is specified in advance, the oral surface field can be transformed by Fourier transform of the far field
Is obtained in which
Representing a fourier transform. And dispersing the orofacial field to obtain the orofacial code corresponding to the far place. On the other hand, adding a modulation term to the expression for specifying the far field
Where α represents the amplitude modulation,representing phase modulation, the far field at that time corresponds to the face code
Thus obtaining the product. The far-field patterns corresponding to the two kinds of face-to-face codes are the same, but the amplitudes and phases of the far-field patterns are different, and if the two kinds of codes are switched according to a certain time sequence in time, the basis of signal modulation is formed. In summary, by designing the spatial distribution and the time switching sequence of the interface coding, the integrated beamforming and signal modulation can be realized.
Example 1:
single beam and signal modulation
The present embodiment utilizes a digitally programmable super-surface to simultaneously achieve directional beam and phase modulation of the beam. Defining the far field function of the super-surface as a directional plane wave:
the beam phase of which can be specified
Is controlled by the value of (c).
Let the beam be pointed at (θ -45 °,
) (ii) a At the same time order
Increasing from 0 to 3 pi/2 in steps of pi/2. According to the introduction of the theoretical part, the corresponding oral-facial codes of four cases can be calculated, and the calculation coding result is shown in fig. 2 a. When in use
In the process, the far field calculated by using the orofacial code is shown in fig. 2d, and the bright spots represent the far field main beam generated by the super-surface, so that the coding effectiveness is verified. FIG. 2g is a drawing of
The far field test results in four cases, increasing from 0 to 3 pi/2 in steps of pi/2, are seen from the test results, although
The values of (a) are different, but the far field pattern remains substantially uniform. FIG. 2j shows the phase of the main beam measured in four cases, and it can be seen from the figure that the phase of the main beam is equal to that of the main beam
Linear, consistent with the expected results.
Let the beam be pointed at (θ is 0 °,
) And order
Increasing from 0 to 3 pi/2 in steps of pi/2. The orofacial code of the super-surface is shown in fig. 2 b; when in use
In the process, the far field calculated by using the orofacial code is shown in fig. 2e, and the bright spots represent far field main beams generated by the super-surface, so that the coding effectiveness is verified. FIG. 2h is a graph of
The far field test results in four cases, increasing from 0 to 3 pi/2 in steps of pi/2, are seen from the test results, although
The values of (a) are different, but the far field pattern remains substantially uniform. FIG. 2k shows the main beam phase measured in four cases, and it can be seen from the figure that the main beam phase is compared with
Linear, consistent with the expected results.
Let the beam point to (theta ═-45°,
) And order
Increasing from 0 to 3 pi/2 in steps of pi/2. The orofacial code of the super-surface is shown in fig. 2 c; when in useWhen the encoding is carried out, the far field calculated by using the mouth-to-face encoding is shown in fig. 2f, the bright points represent far field main beams generated by the super-surface, and the encoding effectiveness is verified. FIG. 2i is a graph of
The far field test results in four cases, increasing from 0 to 3 pi/2 in steps of pi/2, are seen from the test results, although
The values of (a) are different, but the far field pattern remains substantially uniform. FIG. 2l shows the phase of the main beam measured in four cases, from which it can be seen that the phase of the main beam is compared with
Linear, consistent with the expected results.
Example 2:
dual beam and independent signal modulation
The present embodiment utilizes a digitally programmable super-surface to simultaneously achieve dual directional beams and independent modulation of different beam phases. Defining the far field generated by the super surface as two plane waves pointing in different directions:
from the far field expression, it can be seen that the phases of the two beams can be specifiedAnd
is controlled independently.
Let the beam pointing be: (theta)1＝10°,
),(θ2＝-30°,
) And make an order
And
all are zero and fig. 3a gives the far field pattern calculated from the orofacial code. And calculating and displaying that the two main lobes point to a given direction, and verifying the validity of the super-surface coding.
Let the beam pointing be: (theta)1＝33°,
),(θ2＝29°,
) And make an order
And
all are zero and fig. 3b gives the far field pattern calculated from the orofacial code. And calculating and displaying that the two main lobes point to a given direction, and verifying the validity of the super-surface coding.
Let the beam pointing be: (theta)1＝25°,
),(θ2＝28°,
) And make an orderAnd
all are zero and fig. 3c gives the far field pattern calculated from the orofacial code. And calculating and displaying that the two main lobes point to a given direction, and verifying the validity of the super-surface coding.
Let the beam pointing be: (theta)1＝43°,
),(θ2＝30°,
) And make an order
And
all are zero and fig. 3d gives the far field pattern calculated from the orofacial code. And calculating and displaying that the two main lobes point to a given direction, and verifying the validity of the super-surface coding.
On the other hand, in order to verify the independent regulation capability of the digitized super-surface on the phases of different beams, different phase values are respectively assigned to the two beams in fig. 3a, and the far-field patterns and phases thereof are tested.
First, let
Increasing from 0 to 3 pi/2 in steps of pi/2. Fig. 3e shows the far field test results for four cases, from which it can be seen that the patterns remain substantially identical despite the different phases of the beams. FIG. 3i is correspondingFar field phase test results, from which it can be seen that the phase of the first beam remains fixed, while the phase of the second beam is stepped by π/2, consistent with the expected results.
Order to
Increasing from 0 to 3 pi/2 in steps of pi/2. Fig. 3f shows the far field test results for four cases, from which it can be seen that the patterns remain substantially identical despite the different phases of the beams. Fig. 3j is the corresponding far field phase test result, from which it can be seen that the phase of the first beam is increased by pi/2 and remains fixed, while the phase of the second beam is stepped by pi/2, consistent with the expected result.
Order to
Increasing from 0 to 3 pi/2 in steps of pi/2. Figure 3g shows the far field test results for four cases, from which it can be seen that the patterns remain substantially uniform despite the different phases of the beams. Fig. 3k is the corresponding far field phase test result, from which it can be seen that the phase of the first beam is increased by pi/2 and remains fixed, while the phase of the second beam is stepped by pi/2, consistent with the expected results.
Order to
Increasing from 0 to 3 pi/2 in steps of pi/2. Fig. 3h shows the far field test results for four cases, from which it can be seen that the patterns remain substantially uniform despite the different phases of the beams. Figure 3l is the corresponding far field phase test result,from the test results it can be seen that the phase of the first beam is increased by pi/2 and remains fixed, while the phase of the second beam is stepped by pi/2, consistent with the expected results.
Claims (5)
1. An integrated beam forming and signal modulation method based on a digital programmable super surface is characterized in that: the method comprises the following steps:
beam forming is completed by controlling the distribution of the oral surface code of the digital programmable super surface on the space, wherein the oral surface code is formed by combining different states of all super surface units in the digital programmable super surface;
and the modulation of the signal is completed by controlling the switching sequence of different face codes on time.
2. The integrated beamforming and signal modulation method based on the digital programmable super surface according to claim 1, wherein: the acquisition step of the orofacial code of the digital programmable super surface comprises the following steps:
defining the far field generated by the digital programmable super surface as a plane wave, and carrying out Fourier transform on the far field
Obtaining a mouth-face field of the digital programmable super surface;
dispersing the obtained oral surface field of the digital programmable super surface to obtain oral surface codes;
in the formula (I), the compound is shown in the specification,
representing the designated far-field,
representing the modulation terms, α representing the amplitude modulation,
representing phase modulation.
3. The integrated beamforming and signal modulation method based on the digital programmable super surface according to claim 2, wherein: the step 2 specifically comprises the following steps: by adjusting
The value of (c) controls the beam phase.
4. The integrated beamforming and signal modulation method based on the digital programmable super surface according to claim 3, wherein: defining the far field generated by the digital programmable super surface as a directional plane wave:
the beam phase of which is specified
And the phase modulation of the directional beam and the beam is completed.
5. The integrated beamforming and signal modulation method based on the digital programmable super surface according to claim 3, wherein: the far field generated by the digitally programmable super surface is defined as two plane waves pointing in different directions:specifying
And
the values of (a) and (b) control the phases of the two beams independently, respectively, to accomplish independent modulation of the dual directional beams and the phases of the different beams.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911069359.3A CN110855341B (en) | 2019-11-05 | 2019-11-05 | Integrated beam forming and signal modulation method based on digital programmable super surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911069359.3A CN110855341B (en) | 2019-11-05 | 2019-11-05 | Integrated beam forming and signal modulation method based on digital programmable super surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110855341A true CN110855341A (en) | 2020-02-28 |
| CN110855341B CN110855341B (en) | 2023-02-28 |
Family
ID=69598346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911069359.3A Active CN110855341B (en) | 2019-11-05 | 2019-11-05 | Integrated beam forming and signal modulation method based on digital programmable super surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110855341B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478030A (en) * | 2020-04-07 | 2020-07-31 | 东南大学 | Reconfigurable sum-difference beam forming system and method |
| CN111542054A (en) * | 2020-05-08 | 2020-08-14 | 南京大学 | Secure communication method and system based on programmable super surface |
| CN112910531A (en) * | 2021-04-15 | 2021-06-04 | 东南大学 | User tracking and wireless digital transmission method based on programmable super surface |
| CN113109811A (en) * | 2021-04-15 | 2021-07-13 | 东南大学 | Two-phase coding one-dimensional distance imaging method based on programmable super surface |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511915A (en) * | 2018-02-12 | 2018-09-07 | 东南大学 | A kind of arbitrary bit programmable Meta Materials design method based on space-time code |
| CN109905139A (en) * | 2019-01-30 | 2019-06-18 | 东南大学 | A kind of multichannel near-field information Transmission system based on programmable super surface |
| CN110365616A (en) * | 2019-06-27 | 2019-10-22 | 东南大学 | Surpass the multi-user wireless communication system and method on surface based on space-time code |
| CN110380224A (en) * | 2019-07-25 | 2019-10-25 | 东南大学 | A kind of two bit of anisotropic emission formula is difunctional to encode super surface and its design method |
-
2019
- 2019-11-05 CN CN201911069359.3A patent/CN110855341B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108511915A (en) * | 2018-02-12 | 2018-09-07 | 东南大学 | A kind of arbitrary bit programmable Meta Materials design method based on space-time code |
| CN109905139A (en) * | 2019-01-30 | 2019-06-18 | 东南大学 | A kind of multichannel near-field information Transmission system based on programmable super surface |
| CN110365616A (en) * | 2019-06-27 | 2019-10-22 | 东南大学 | Surpass the multi-user wireless communication system and method on surface based on space-time code |
| CN110380224A (en) * | 2019-07-25 | 2019-10-25 | 东南大学 | A kind of two bit of anisotropic emission formula is difunctional to encode super surface and its design method |
Non-Patent Citations (1)
| Title |
|---|
| 张磊等: "电磁编码超材料的理论与应用", 《中国光学》, no. 01, 15 February 2017 (2017-02-15) * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111478030A (en) * | 2020-04-07 | 2020-07-31 | 东南大学 | Reconfigurable sum-difference beam forming system and method |
| CN111478030B (en) * | 2020-04-07 | 2023-09-19 | 东南大学 | Reconfigurable sum and difference beam forming system and method |
| CN111542054A (en) * | 2020-05-08 | 2020-08-14 | 南京大学 | Secure communication method and system based on programmable super surface |
| CN112910531A (en) * | 2021-04-15 | 2021-06-04 | 东南大学 | User tracking and wireless digital transmission method based on programmable super surface |
| CN113109811A (en) * | 2021-04-15 | 2021-07-13 | 东南大学 | Two-phase coding one-dimensional distance imaging method based on programmable super surface |
| CN112910531B (en) * | 2021-04-15 | 2022-06-03 | 东南大学 | User tracking and wireless digital transmission method based on programmable super surface |
| CN113109811B (en) * | 2021-04-15 | 2023-11-24 | 东南大学 | Two-phase coding one-dimensional distance imaging method based on programmable super surface |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110855341B (en) | 2023-02-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110855341B (en) | Integrated beam forming and signal modulation method based on digital programmable super surface | |
| US20230292277A1 (en) | Positioning method, device and system for receiving device, storage medium, and electronic device | |
| CN106850016B (en) | Phase-only weighted array antenna beam forming optimization method based on MIFT and CP mixed algorithm | |
| CN107181519B (en) | Null steering expansion 3D-MIMO beam forming method based on moving target DOA | |
| CN107710506A (en) | In phased array antennas to produce have compared with wide beamwidth beam pattern method and apparatus | |
| CN107329134A (en) | A kind of ripple control battle array ULTRA-WIDEBAND RADAR aerial array that waveform control is fed based on array element | |
| CN104753184A (en) | Transmission sending method, device and system | |
| CN110600879B (en) | Method for generating omnidirectional circularly polarized vortex electromagnetic wave | |
| CN107017931B (en) | A kind of method and device that beam side lobe inhibits | |
| CN113364494A (en) | IRS (inter-Range instrumentation System) assisted MISO (multiple input single output) system performance optimization method for hardware distortion | |
| CN111276823B (en) | Low-side lobe scanning method of low-cost four-dimensional transmission array antenna | |
| CN106650097A (en) | Synthesis method of array antenna shaped beam with controllable excitation amplitude dynamic range | |
| CN111859644B (en) | Method for forming receiving wave beam and scanning azimuth of circular phased array antenna | |
| CN106981728A (en) | A kind of bare cloth line array integrated approach of directional diagram reconstructable | |
| CN102104195A (en) | Beam steering system of phased array antenna using frequency | |
| CN105206934A (en) | Phased array receiving antenna system and operation method thereof | |
| CN114679208A (en) | Transmitting beam forming method of millimeter wave communication perception integrated system | |
| CN109495140A (en) | A kind of beam search tracking wireless communication system and beam search tracking | |
| CN107395255A (en) | A kind of sane mixed-beam manufacturing process based on convex optimization | |
| CN112379341A (en) | Digital modeling method of radar receiver | |
| CN104574536A (en) | RSU (Road Side Unit) equipment of ETC (Electronic Toll Collection) system | |
| CN109245802A (en) | The satellite multi beamforming network equipment and beam-forming method of synthesis tracking wave beam | |
| CN108089161A (en) | A kind of aerial array synthesis wave beam spatial domain selection method based on Feedback of Power | |
| CN108170888B (en) | Beam pattern comprehensive design method based on minimum weighting vector dynamic range | |
| CN107359922A (en) | A kind of beam scanning is the same as the DOA neighbours' discoveries being combined and accuracy alignment method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |