WO2018155795A1 - Communication device using uca antenna including dual polarization antenna - Google Patents

Communication device using uca antenna including dual polarization antenna Download PDF

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Publication number
WO2018155795A1
WO2018155795A1 PCT/KR2017/014405 KR2017014405W WO2018155795A1 WO 2018155795 A1 WO2018155795 A1 WO 2018155795A1 KR 2017014405 W KR2017014405 W KR 2017014405W WO 2018155795 A1 WO2018155795 A1 WO 2018155795A1
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Prior art keywords
antenna
uca
signal
pol
pol antenna
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PCT/KR2017/014405
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French (fr)
Korean (ko)
Inventor
길계태
이주용
조동호
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한국과학기술원
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Priority to KR10-2017-0024164 priority Critical
Priority to KR20170024164 priority
Priority to KR1020170166095A priority patent/KR20180097437A/en
Priority to KR10-2017-0166095 priority
Application filed by 한국과학기술원 filed Critical 한국과학기술원
Publication of WO2018155795A1 publication Critical patent/WO2018155795A1/en

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B7/00Radio transmission systems, i.e. using radiation field
    • H04B7/02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/10Polarisation diversity; Directional diversity
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00Modulated-carrier systems

Abstract

Disclosed is a communication device using a UCA antenna including a dual polarization antenna. A transmitter according to one embodiment comprises: a modulator for performing OAM modulation on first signals and second signals; an H-pol UCA antenna including a plurality of horizontal polarization antennas for transmitting the OAM-modulated first signals; and a V-pol UCA antenna including a plurality of vertical polarization antennas for transmitting the OAM-modulated second signals.

Description

Communication devices using the UCA antenna comprising a dual-polarized antenna

The following example embodiments relate to a communication apparatus using the antenna UCA comprising a dual polarized antenna.

Electromagnetic wave may have a momentum (momentum) of the linear momentum (linear momentum), orbital angular momentum (Orbital Angular Momentum (OAM)) is full size and self momentum (Spin Angular Momentum (SAM)).

Before going all-time among momentum wave with angular momentum (OAM) can be passed to hold the momentum conservation law by far, line-of-sight (LOS) environment theoretically reveal the infinite number of modes that can be transmitted without interference in as such a millimeter wave is a study reported in the communication field (millimeter wave) and the light beam (light beam) is increasing interest in the technique.

Study on orbital angular momentum (OAM) technology in wireless communication (radio communication) are the first two modes by researchers at PADOVA universities in Italy in 2012 spiral phase plate (SPP) using an antenna with Yaki antenna at 445m distance It is carried out by the receive attention as the one that reported successful transfer of data. Thereafter, to generate a revolving angular momentum (OAM) signal is that by using the (Uniform Circular Array) UCA antenna can be achieved as evidenced by the wireless simulation and mathematical analysis OAM techniques using UCA antenna also be noticed with It was.

Transmission apparatus according to an embodiment of the first signals and the 2 OAM modulation on the signal (Orbital Angular Momentum modulation) modulator (modulator) and, OAM modulated first plurality of horizontal polarization antenna for transmitting a first signal to perform the ( and a V-pol UCA antenna comprises a horizontal polarized antenna) H-pol UCA antenna (uniform circular array antenna), and a plurality of vertical polarization antennas (vertical polarized antenna) for transmitting OAM modulated second signal including .

The number of the number of the first signal and the second signal may be the same.

The number of said plurality of horizontal polarization antenna may be equal to or greater than the number of the first signal.

The number of the plurality of vertical polarization antenna may be equal to or greater than the number of said second signal.

The radius of the radius of the H-pol antenna UCA UCA and the V-pol antenna may be the same.

The H-pol UCA antenna, line-of-sight path (line-of-sight (LoS) path) and propagated to the (propagation path) the first channel transmits the first signal and the OAM modulated through (channel) is determined based on and the V-pol antenna UCA is capable of transmitting the line-of-sight path and the OAM modulated second signal over a second channel, which is determined on the basis of the above propagation.

The second channel of the first channel, comprising a channel between the H-pol UCA antenna and the receiving H-pol UCA channel and between the antenna, the H-pol UCA antenna and the receiving V-pol UCA antenna, is, the V-pol may include a channel between the antenna and the received H-pol UCA UCA channel between the antennas, the V-pol antenna and the receiving UCA UCA V-pol antenna.

The H-pol UCA antenna, the receiving H-pol UCA antenna and the receive V-pol UCA antenna transmits said OAM modulated first signal to, and the V-pol UCA antenna, the receiving H-pol UCA antenna and it may transmit a second signal to the OAM modulated with the received V-pol antenna UCA.

The device may further comprise a spreading module (spreading module) for performing an inter mode spreading (spreading intermode) to the first signal and the second signal.

The spreading module using Unitarian matrix (unitary matrix) of m * m: performing the inter mode spreading, and the m may be the sum of the number of the number of the first signal and the second signal.

And one embodiment and the receiving apparatus H-pol UCA antenna including a plurality of horizontal polarization antenna for receiving a third signal according to the example, a 4 V-pol UCA antenna comprising a plurality of vertically-polarized antennas for transmitting signals, It includes a demodulator (demodulator) for performing OAM demodulation (demodulation) on the said third signal and said fourth signal.

The apparatus may further comprise a least-squares-signal detector (signal detector) for detecting a transmission signal by using the (Least Square Method (LSM)) to the third signals and OAM demodulated fourth signal OAM demodulation .

It said third signal and said fourth signals may be transmitted from the transmission V-pol antenna UCA comprising a transmitting H-pol antenna UCA and a plurality of vertical polarization antenna including a plurality of horizontal polarization antennas.

The number of the number of the third signal and the fourth signal may be identical.

The radius of the radius of the H-pol antenna UCA UCA and the V-pol antenna may be the same.

1 shows a block diagram of a communication system according to one embodiment.

Figure 2 is a block diagram for explaining the transmission apparatus shown in FIG.

3 is a structural diagram illustrating the H-pol antenna UCA shown in Fig.

4 is a structural diagram illustrating the V-pol antenna UCA shown in Fig.

5 is a structural view for explaining a case in which the diameter of the H-pol antenna UCA UCA and the V-pol antenna the same.

Figure 6 is a block diagram illustrating a receiving apparatus shown in Fig.

7 is a structural diagram illustrating the H-pol antenna UCA shown in Fig.

8 is a structural diagram illustrating the V-pol antenna UCA shown in Fig.

9 is a structural view for explaining a case in which the diameter of the H-pol antenna UCA UCA and the V-pol antenna the same.

10 shows a structural diagram of a communication system according to one embodiment.

11 is a block diagram for illustrating a transmission apparatus according to an embodiment.

Figure 12 shows an example of simulation results.

Figure 13a shows another example of the simulation result.

Figure 13b shows another example of the simulation result.

14 shows another example of the simulation result.

Figure 15a shows another example of the simulation result.

Figure 15b shows another example of the simulation result.

Figure 16a shows another example of the simulation result.

Figure 16b shows another example of the simulation result.

17 shows another example of the simulation result.

Figure 18a shows another example of the simulation result.

Figure 18b shows another example of the simulation result.

19 shows another example of the simulation result.

20 shows another example of the simulation result.

21 shows another example of the simulation result.

As a particular structural or functional description will be given on embodiments according to the concepts of the invention disclosed herein are illustrative for the purpose of describing the embodiment according to only the concept of the invention, embodiments in accordance with the concepts of the invention they can be embodied in various forms and is not limited to the embodiments set forth herein.

Embodiments in accordance with the concepts of the present invention may be added a variety of changes can be to illustrate in the drawings of the embodiments may have various forms, and described in detail herein. This, however, is by no means to restrict the embodiment in accordance with the concept of the invention to the particular form disclosed, and includes the changes included in the spirit and scope of the present invention, equivalents or alternatives.

While the first or can be used in describing various elements the terms of the second and so on, the above elements shall not be restricted to the above terms. These terms are not departing from the scope according to one of the components to the concept of the present invention, for only, for example, to distinguish from the other component while the first component may be named as a second component, Similarly, the second component may be named as a first component.

It understood that when one element is described as being "connected" or "coupled" to another element, but may be directly connected or coupled to the other components, may be other element in between It should be. In contrast, when an element is referred to there being "directly connected" to another element or "directly connected", it should be understood that other components in the middle that does not exist. Configured to be construed a expression in, for example, to describe the relationship between the example and the like, like "between the right -" or "- directly adjacent to" "~ between" element.

The terms used herein are merely used to describe particular embodiments, and are not intended to limit the present invention. Expression in the singular number include a plural forms unless the context clearly indicates otherwise. In this specification, the "inclusive" or "gajida" and the term is that which is a combination of a staking features, numbers, steps, operations, elements, parts or combinations thereof to configured by the presence, of one or more other features, integers, steps, operations, elements, the presence or addition of parts or combinations thereof and are not intended to preclude.

One, including technical and scientific terms, all terms used herein that are not otherwise defined shall have the same meaning as commonly understood by one of ordinary skill in the art. Any term that is defined in a general used dictionary are to be interpreted as having the same meaning in the context of the relevant art, unless otherwise defined explicitly in the present specification, not be interpreted to have an idealistic or excessively formalistic meaning no.

Module (module) in this specification may also mean the hardware to perform the functions and operations in accordance with the respective names described herein, it may mean a computer program code that can perform a specific function and operation , or electronically recording a specific function and can perform the operations the computer program code is loaded in the media, for example, it may refer to a processor or microprocessor.

In other words, the module is may indicate a functional and / or structural bonding of the software for driving the hardware and / or the hardware for carrying out the invention.

Reference to the accompanying drawings, the following Examples will be described in detail. However, it is not the scope of the patent application limited or restricted to these embodiments. Like reference numerals in the drawings denote like elements.

1 shows a block diagram of a communication system according to one embodiment.

1, the communication system includes; (200 receiving device) (communication system;; 10) a transmission device (transmitting device 100) and a receiving device. The transmitting device 100 may transmit a signal to the receiver 200 through a channel (channel).

Transmitter 100 may comprise a dual-polarized antenna UCA (dual polarized uniform circular array (UCA) antenna). For example, the transmitting device 100 comprises a horizontally polarized UCA antenna (horizontal-polarized UCA antenna, hereinafter H-pol UCA antenna) and vertically polarized UCA antenna (vertical-polarized UCA antenna, or less V-pol UCA antenna) can. At this time, H-pol antenna UCA may follow the array (array) including a plurality of horizontal polarization antennas (horizontal-polarized antenna). In addition, V-pol antenna UCA may include a plurality of vertical polarization antennas (vertical-polarized antenna) along the array. The transmitting device 100 may increase the transmission distance of the signal by using a dual-polarized antenna UCA.

Receiver 200 may be the same as the transmission device 100 and the structure. For example, receiver 200 may comprise a dual-polarized antenna UCA, such as transmitter 100. That is, the receiving apparatus 200 may include a V-pol antenna UCA containing the H-pol antenna UCA and a plurality of vertical polarization antenna including a plurality of horizontal polarization antennas.

2 to 10 are views for explaining the communication system shown in Figure 1;

Figure 2 is a V-pol UCA illustrated in the H-pol is a structural view for explaining the UCA antenna, Fig 4 is a diagram showing a a block diagram of a transmitting device, Fig 3 is shown in Figure 1 a structural view for explaining an antenna.

It includes; (110 modulator), H-pol UCA antenna 120, and the V-pol antenna UCA 130 if Figs. 1 to 4, the transmission device 100 includes a modulator.

Modulator 110 may perform OAM modulated (Orbital Angular Momentum modulation) to the signals to be transmitted. The signals comprise a first signal to be transmitted (

Figure PCTKR2017014405-appb-I000001
) And second signal (
Figure PCTKR2017014405-appb-I000002
) Can include. Claim 1 of the signal (
Figure PCTKR2017014405-appb-I000003
) And second signal (
Figure PCTKR2017014405-appb-I000004
) It may include a symbol (symbol). At this time, the first signal (
Figure PCTKR2017014405-appb-I000005
) To be the second signal of the (
Figure PCTKR2017014405-appb-I000006
) Number may be equal to the N. That is, the modulator 110 may perform OAM modulated signals to 2N.

Modulator 110 may perform OAM modulated on the basis of the equation (1).

Figure PCTKR2017014405-appb-I000007

here,

Figure PCTKR2017014405-appb-I000008
Is deulyigo first signal to be transmitted,
Figure PCTKR2017014405-appb-I000009
Is deulyigo second signal to be transmitted,
Figure PCTKR2017014405-appb-I000010
Is deulyigo first OAM modulated signals,
Figure PCTKR2017014405-appb-I000011
Is deulyigo second OAM modulated signals,
Figure PCTKR2017014405-appb-I000012
Is the N * N discrete Fourier transform matrix (Discrete Fourier Transform (DFT) matrix) in the vertical polarization associated with the transmission side,
Figure PCTKR2017014405-appb-I000013
Is the discrete Fourier transform matrix of N * N related to the transmission-side horizontal polarization,
Figure PCTKR2017014405-appb-I000014
It is
Figure PCTKR2017014405-appb-I000015
An index set (index set) of the columns (column) used for signal transmission in,
Figure PCTKR2017014405-appb-I000016
It is
Figure PCTKR2017014405-appb-I000017
In the column index set to be used for signal transmission.

Modulator 110 in the first signal the OAM modulated (

Figure PCTKR2017014405-appb-I000018
) It can be output to the H-pol antenna UCA 120. Further, the modulator 110 is the second signal the OAM modulated (
Figure PCTKR2017014405-appb-I000019
) It can be output to the V-pol antenna UCA 130.

H-pol antenna UCA 120 and a radius of R TX, h, may include a plurality of the H-pol antenna. At this time, the number of a plurality of the H-pol antenna a first signal (

Figure PCTKR2017014405-appb-I000020
) It may be greater than or equal to a. That is, the number of the plurality of H-pol antenna may be greater than or equal to N. For example, a plurality of H-pol antenna of claim 1 H-pol antenna 120-1, the 2 H-pol antenna 120-2, the 3 H-pol antenna (120-3), and the fourth may be H-pol includes an antenna (120-4).

H-pol antenna UCA 120 is the first signal, OAM modulated (

Figure PCTKR2017014405-appb-I000021
) It can be transmitted to the receiver 200 over a channel.

V-pol antenna UCA 130 and a radius of R TX, v, may contain a plurality of V-pol antenna. At this time, the number of a plurality of V-pol antenna a second signal (

Figure PCTKR2017014405-appb-I000022
) It may be greater than or equal to a. That is, the number of a plurality of V-pol antenna may be greater than or equal to N. For example, a plurality of V-pol antenna of claim 1 V-pol antenna 130-1, a 2 V-pol antenna 130-2, a 3 V-pol antenna (130-3), and the fourth It may include a V-pol antenna (130-4).

V-pol antenna UCA 130 is the second signal is modulated OAM (

Figure PCTKR2017014405-appb-I000023
) It can be transmitted to the receiver 200 over a channel.

FIG H-pol UCA antenna 120 for convenience of description in the trivalent Although shown as including four H-pol antenna, must this be limited not, comprise a plurality of H-pol antenna according to an embodiment can.

In addition, Figure 4 the V-pol, but it is shown as a UCA antenna 130 comprises four V-pol antenna, be a plurality of V-pol antenna is according to the embodiment, not limited to for convenience of explanation, It can be included.

5 is a structural view for explaining a case in which the diameter of the H-pol antenna UCA UCA and the V-pol antenna the same.

5, the transmission device 300 according to one embodiment may comprise an H-pol antenna UCA UCA and V-pol antenna on a circular array. At this time, the radius of the circular array may be R TX. That is, H-pol antenna UCA UCA and V-pol antenna may have the same radius R as TX.

H-pol antenna UCA may include a plurality of the H-pol antenna. For example, H-pol antenna UCA is the 1 H-pol antenna 140-1, the 2 H-pol antenna (140-2), the 3 H-pol antenna (140-3), and a 4 H It may include -pol antenna (140-4). The 1 H-pol antenna 140-1, the 2 H-pol antenna (140-2), the 3 H-pol antenna (140-3), and the 4 H-pol antenna (140-4) is OAM It may transmit the modulated first signal.

In addition, V-pol antenna UCA may include a plurality of V-pol antenna. For example, V-pol antenna UCA claim 1 V-pol antenna 150-1, a 2 V-pol antenna 150-2, a 3 V-pol antenna (150-3), and a 4 V It may include -pol antenna (150-4). No. 1 V-pol antenna 150-1, a 2 V-pol antenna 150-2, a 3 V-pol antenna (150-3), and a 4 V-pol antenna (150-4) is OAM It may transmit the modulated second signal.

Although Figure 5 shows the H-pol UCA antenna for convenience of explanation comprises four H-pol antenna, and the V-pol UCA antenna shown as including four V-pol antenna, not necessarily limited to, according to an embodiment the number of the number of V-pol antenna the H-pol antenna may be different. Further, Fig. 5 is that the H-pol antenna and the V-pol antenna, but may be shown as a configuration in which the cross-arranged, freely arranged depending on the number of antennas is configured self-evident.

Figure 6 illustrates the received and block diagram illustrating the apparatus, Fig. 7 is a structural diagram illustrating the H-pol UCA antenna shown in Figure 6, Figure 8 is a 6 shown in Figure 1 V-pol UCA a structural view for explaining an antenna.

Referring to Figure 1, and 6 to 8, the receiving apparatus 200 includes a H-pol antenna UCA (210), V-pol antenna UCA 220, and a demodulator; include (demodulator 230).

H-pol antenna UCA 210 includes a third signal (

Figure PCTKR2017014405-appb-I000024
) It can be received. The third signal (
Figure PCTKR2017014405-appb-I000025
) It may be, the signal to be transmitted from the transmission V-pol antenna UCA comprising a transmitting H-pol antenna UCA and a plurality of vertical polarization antenna including a plurality of horizontal polarization antennas.

H-pol antenna UCA 210 and a radius of R RX, h, may include a plurality of the H-pol antenna. At this time, the number of a plurality of the H-pol antenna a third signal (

Figure PCTKR2017014405-appb-I000026
) It may be greater than or equal to a. That is, the number of the plurality of H-pol antenna may be greater than or equal to N. For example, a plurality of H-pol antenna of claim 1 H-pol antenna 210-1, the 2 H-pol antenna (210-2), the 3 H-pol antenna 210-3, and the fourth may be H-pol includes an antenna (210-4).

H-pol antenna UCA 210 includes a third signal received (

Figure PCTKR2017014405-appb-I000027
) It can be output to a demodulator 230.

V-pol antenna UCA 220 is the fourth signal (

Figure PCTKR2017014405-appb-I000028
) It can be received. The fourth signal (
Figure PCTKR2017014405-appb-I000029
) It may be, the signal to be transmitted from the transmission V-pol antenna UCA comprising a transmitting H-pol antenna UCA and a plurality of vertical polarization antenna including a plurality of horizontal polarization antennas.

V-pol antenna UCA 220 and a radius of R RX, v, may contain a plurality of V-pol antenna. At this time, the number of a plurality of V-pol antenna, the fourth signal (

Figure PCTKR2017014405-appb-I000030
) It may be greater than or equal to a. That is, the number of a plurality of V-pol antenna may be greater than or equal to N. For example, a plurality of V-pol antenna of claim 1 V-pol antenna 220-1, a 2 V-pol antenna 220-2, a 3 V-pol antenna (220-3), and the fourth It may include a V-pol antenna (220-4).

V-pol antenna UCA 220 is the fourth signal is received (

Figure PCTKR2017014405-appb-I000031
) It can be output to a demodulator 230.

A demodulator 230 receives the third signal (

Figure PCTKR2017014405-appb-I000032
) And the fourth signal (
Figure PCTKR2017014405-appb-I000033
) It may be performed on the demodulated OAM (Orbital Angular Momentum demodulation). At this time, the third signal (
Figure PCTKR2017014405-appb-I000034
) To be the fourth signal of the (
Figure PCTKR2017014405-appb-I000035
) Number may be equal to the N. That is, the demodulator 230 may perform demodulation on 2N OAM signals.

The demodulator 230 may perform demodulation on the basis of the equation (2) OAM.

Figure PCTKR2017014405-appb-I000036

here,

Figure PCTKR2017014405-appb-I000037
Is deulyigo third signal is received,
Figure PCTKR2017014405-appb-I000038
Is deulyigo fourth signal is received,
Figure PCTKR2017014405-appb-I000039
Is deulyigo third OAM signal demodulation,
Figure PCTKR2017014405-appb-I000040
Is deulyigo fourth OAM signal demodulation,
Figure PCTKR2017014405-appb-I000041
The discrete Fourier transform matrix of N * N associated with the receiving-side vertical polarization (
Figure PCTKR2017014405-appb-I000042
Hermitian matrix (Hermitian matrix) of a), and
Figure PCTKR2017014405-appb-I000043
The discrete Fourier transform matrix of N * N associated with the receiving-side horizontal polarization (
Figure PCTKR2017014405-appb-I000044
) And Toulon Mitt matrix, S v is the
Figure PCTKR2017014405-appb-I000045
In a column index set to be used for the OAM demodulation, S h is
Figure PCTKR2017014405-appb-I000046
In the index of the column sets to OAM demodulation.

FIG H-pol UCA antenna 210 for convenience of explanation, 7 a, but shown as including four H-pol antenna, must this be limited not, comprise a plurality of H-pol antenna according to an embodiment can.

Further, although FIG. 8, shown as V-pol UCA antenna 220 for convenience of explanation comprises four V-pol antenna, to be a plurality of V-pol antenna is according to the embodiment, it not limited to It can be included.

9 is a structural view for explaining a case in which the diameter of the H-pol antenna UCA UCA and the V-pol antenna the same.

9, the receiving apparatus 400 according to an embodiment may include the H-pol antenna UCA UCA and V-pol antenna on a circular array. At this time, the radius of the circular array may be R RX. That is, H-pol antenna UCA UCA and V-pol antenna may have the same radius R as RX.

H-pol antenna UCA may include a plurality of the H-pol antenna. For example, H-pol antenna UCA is the 1 H-pol antenna (240-1), the 2 H-pol antenna (240-2), the 3 H-pol antenna (240-3), and a 4 H It may include -pol antenna (240-4). The 1 H-pol antenna (240-1), the 2 H-pol antenna (240-2), the 3 H-pol antenna (240-3), and the 4 H-pol antenna (240-4) is the receiving a first signal and may output to the demodulator.

In addition, V-pol antenna UCA may include a plurality of V-pol antenna. For example, V-pol antenna UCA claim 1 V-pol antenna (250-1), the 2 V-pol antenna (250-2), a 3 V-pol antenna (250-3), and a 4 V It may include -pol antenna (250-4). No. 1 V-pol antenna (250-1), the 2 V-pol antenna (250-2), a 3 V-pol antenna (250-3), and a 4 V-pol antenna (250-4) is the receiving a fourth signal to be output to the demodulator.

Although Figure 9 shows the H-pol UCA antenna for convenience of explanation comprises four H-pol antenna, and the V-pol UCA antenna shown as including four V-pol antenna, not necessarily limited to, according to an embodiment the number of the number of V-pol antenna the H-pol antenna may be different. Also, possibly in the H-pol antenna 9 and the V-pol antenna is shown, but a structure that is arranged to be crossed, can be freely placed depending on the number of antennas is configured self-evident.

10 shows a structural diagram of a communication system according to one embodiment.

10, the communication system 20 according to one embodiment includes a transmitting apparatus 500 and receiving apparatus 600. The

The transmission apparatus 500 includes a modulator 510 and a dual polarized antenna UCA. For example, a dual-polarized antenna UCA may include transmitting H-pol antenna UCA 520 and the transmission V-pol antenna UCA 530.

Modulator 510 may perform OAM modulated signals to be transmitted. The signals comprise a first signal to be transmitted (

Figure PCTKR2017014405-appb-I000047
) And second signal (
Figure PCTKR2017014405-appb-I000048
) Can include. At this time, the first signal (
Figure PCTKR2017014405-appb-I000049
) To be the second signal of the (
Figure PCTKR2017014405-appb-I000050
) Number may be equal to the N. That is, the modulator 110 may perform OAM modulated signals to 2N.

Modulator 510 may perform OAM modulated on the basis of the equation (1).

Modulator 510 includes first OAM signal modulation (

Figure PCTKR2017014405-appb-I000051
) It can be output to the transmitting H-pol antenna UCA 520. The modulator 510 is the second signal is modulated OAM (
Figure PCTKR2017014405-appb-I000052
) It can be output to the transmission V-pol antenna UCA 530.

Transmitting H-pol antenna UCA 520 and a radius of R TX, h, may include a plurality of transmitting H-pol antenna. At this time, the number of a plurality of transmitting H-pol antenna a first signal (

Figure PCTKR2017014405-appb-I000053
) It may be greater than or equal to a. That is, the number of a plurality of transmitting H-pol antenna may be greater than or equal to N. For example, a plurality of transmitting H-pol antenna is a first transmitting H-pol antenna 520-1, a second transmission H-pol antenna (520-2), the third transmitting H-pol antenna (520-3) and a fourth may include transmitting H-pol antenna (520-4).

The transmitting H-pol antenna UCA 520 OAM modulated first signal (

Figure PCTKR2017014405-appb-I000054
) It can be transmitted to the receiving apparatus 600 via the channel.

Transmission V-pol antenna UCA 530 and a radius of R TX, v, may include a plurality of the transmission V-pol antenna. The radius of the transmitting H-pol antenna UCA 520 and radial transmission V-pol antenna UCA 530 in accordance with an embodiment may be implemented identically. At this time, the number of the plurality of the transmission V-pol antenna a second signal (

Figure PCTKR2017014405-appb-I000055
) It may be greater than or equal to a. That is, the number of the plurality of the transmission V-pol antenna may be greater than or equal to N. For example, the plurality of transmission V-pol antenna, first transmission V-pol antenna (530-1), the second transmission V-pol antenna (530-2), the third transmission V-pol antenna (530-3) , and 4 may comprise a transmission V-pol antenna (530-4).

Transmission V-pol antenna UCA 530 is the second signal is modulated OAM (

Figure PCTKR2017014405-appb-I000056
) It can be transmitted to the receiving apparatus 600 via the channel.

The first signal and the second signal by the transmission apparatus 500 is transmitted may be received in the receiving device 600 as the third signal or the fourth signal through a channel LoS (line-of-sight channel). At this time, the LoS channel between the transmitting apparatus 500 and receiving apparatus 600,

Figure PCTKR2017014405-appb-I000057
It can be defined as. That is, LoS channel (H) may comprise a component of a complex number (complex number (C)). In this case, K denotes the number of receive antennas UCA, M denotes the number of transmit antennas UCA. That is, K is transmitted H-pol number of UCA antenna 520 and the transmission V-pol and the sum of the number of UCA antenna (530), M is received H-pol number of UCA antenna 610 and the receive V-pol It may be a number plus the number of UCA antenna 620.

LoS in the channel (H), a channel component between the m-th transmit antenna and a k-th receiving antenna can be the same as the equation (3).

Figure PCTKR2017014405-appb-I000058

here,

Figure PCTKR2017014405-appb-I000059
Is a channel component between the m-th transmit antenna and a k-th receive antenna,
Figure PCTKR2017014405-appb-I000060
Is a propagation path between the m-th transmit antenna and a k-th receiving antenna (propagation path; p (k, m)) the radiation pattern (radiation pattern) in the fourth equation as a parameter (parameter) reflecting the radio propagation characteristics experienced by equal,
Figure PCTKR2017014405-appb-I000061
May be the same as the equation (8) as a displacement (displacement) of the gain (gain) / phase (phase) of the signal due to the distance of the line of sight path (LoS path) between the m-th transmit antenna and a k-th receive antenna.

Figure PCTKR2017014405-appb-I000062

here,

Figure PCTKR2017014405-appb-I000063
Is the same as equation (5) as a component of the radiation pattern of the k-th receive antenna of the signal between the m-th transmit antenna and a k-th receive antenna,
Figure PCTKR2017014405-appb-I000064
Is equal to the equation (6) as a component of the radiation pattern of the m-th transmit antenna for the signal between the m-th transmit antenna and a k-th receiving antenna,
Figure PCTKR2017014405-appb-I000065
May be the same as the equation (7).

Figure PCTKR2017014405-appb-I000066

here,

Figure PCTKR2017014405-appb-I000067
Is the vertical polarization component of the radiation pattern of the k-th receive antenna of the signal between the m-th transmit antenna and a k-th receive antenna,
Figure PCTKR2017014405-appb-I000068
May be a horizontally polarized component of the radiation pattern of the k-th receive antenna of the signal between the m-th transmit antenna and a k-th receive antenna.

Figure PCTKR2017014405-appb-I000069

here,

Figure PCTKR2017014405-appb-I000070
And a vertical polarization component of the radiation pattern of the m-th transmit antenna for the signal between the m-th transmit antenna and a k-th receiving antenna,
Figure PCTKR2017014405-appb-I000071
It may be a horizontally polarized component of the radiation pattern of the m-th transmit antenna for the signal between the m-th transmit antenna and a k-th receiving antenna.

Figure PCTKR2017014405-appb-I000072

here,

Figure PCTKR2017014405-appb-I000073
And the line-of-sight path identification vertical cross polarization degree (vertical cross polarization discrimination (XPD)) of (LoS path) between the m-th transmit antenna and a k-th receive antenna,
Figure PCTKR2017014405-appb-I000074
And the line-of-sight path identification horizontal cross polarization degree (horizontal XPD) of (LoS path) between the m-th transmit antenna and a k-th receive antenna,
Figure PCTKR2017014405-appb-I000075
It may be an east Fabien (co-polarization ratio (CPR)) of the line of sight path (LoS path) between the m-th transmit antenna and a k-th receive antenna.

Figure PCTKR2017014405-appb-I000076

here,

Figure PCTKR2017014405-appb-I000077
Is the wavelength of the signal,
Figure PCTKR2017014405-appb-I000078
It may be the distance of the line of sight path (LoS path) between the m-th transmit antenna and a k-th receive antenna.

Further, in Equation (4)

Figure PCTKR2017014405-appb-I000079
By the use of the mean and variance for all transmit antennas and all receive antennas
Figure PCTKR2017014405-appb-I000080
It expressed as, in equation (3)
Figure PCTKR2017014405-appb-I000081
Is expressed as Equation (9). Equation (9) it can be expressed as a vector (vector) as shown in equation (10).

Figure PCTKR2017014405-appb-I000082

here,

Figure PCTKR2017014405-appb-I000083
And the mean,
Figure PCTKR2017014405-appb-I000084
It may be deviations.

Figure PCTKR2017014405-appb-I000085

here,

Figure PCTKR2017014405-appb-I000086
It is
Figure PCTKR2017014405-appb-I000087
It may be the remainder (remainder) which is defined as. At this time,
Figure PCTKR2017014405-appb-I000088
Is because of the (circulant) properties a circulator parent, Equation 10 can be expressed as Equation (11).

Figure PCTKR2017014405-appb-I000089

here,

Figure PCTKR2017014405-appb-I000090
And the receiving side is a discrete Fourier transform matrix (DFT matrix),
Figure PCTKR2017014405-appb-I000091
Is a Hermitian matrix (Hermitian matrix) on the transmission side a discrete Fourier transform matrix (DFT matrix),
Figure PCTKR2017014405-appb-I000092
It may be a diagonal matrix (diagonal matrix).
Figure PCTKR2017014405-appb-I000093
Is in formula (2)
Figure PCTKR2017014405-appb-I000094
And
Figure PCTKR2017014405-appb-I000095
And associated with,
Figure PCTKR2017014405-appb-I000096
Is in formula (1)
Figure PCTKR2017014405-appb-I000097
And
Figure PCTKR2017014405-appb-I000098
And it may be associated.

The OAM modulated first signal (

Figure PCTKR2017014405-appb-I000099
) And the second signal is modulated OAM (
Figure PCTKR2017014405-appb-I000100
) Of the third signal through the LoS channel (H) (
Figure PCTKR2017014405-appb-I000101
S) or the fourth signal (
Figure PCTKR2017014405-appb-I000102
) And as to be propagated to the receiving device 600. At this time, the OAM modulated first signal (
Figure PCTKR2017014405-appb-I000103
), And the OAM modulated second signal (
Figure PCTKR2017014405-appb-I000104
), And the third signal (
Figure PCTKR2017014405-appb-I000105
) And the fourth signal (
Figure PCTKR2017014405-appb-I000106
) Relationship can be expressed as a vector as shown in equation (12).

Figure PCTKR2017014405-appb-I000107

here,

Figure PCTKR2017014405-appb-I000108
The third signal (
Figure PCTKR2017014405-appb-I000109
) And the fourth signal (
Figure PCTKR2017014405-appb-I000110
)as
Figure PCTKR2017014405-appb-I000111
ego,
Figure PCTKR2017014405-appb-I000112
Is the first signal, OAM modulated (
Figure PCTKR2017014405-appb-I000113
), And the OAM modulated second signal (
Figure PCTKR2017014405-appb-I000114
)as
Figure PCTKR2017014405-appb-I000115
ego,
Figure PCTKR2017014405-appb-I000116
LoS is a channel
Figure PCTKR2017014405-appb-I000117
ego,
Figure PCTKR2017014405-appb-I000118
It is an additive white Gaussian noise (additive white Gaussian noise (AWGN))
Figure PCTKR2017014405-appb-I000119
One can.

At this time,

Figure PCTKR2017014405-appb-I000120
It may refer to a channel between a K * M matrix, a transmission V-pol antenna UCA 530 and the receiving V-pol antenna UCA 620.
Figure PCTKR2017014405-appb-I000121
It may refer to a channel between a K * M matrix, a transmission V-pol antenna UCA 530 and the receiving H-pol antenna UCA 610.
Figure PCTKR2017014405-appb-I000122
It may refer to a channel between a K * M matrix, the transmitting H-pol antenna UCA 520 and the receiving V-pol antenna UCA 620.
Figure PCTKR2017014405-appb-I000123
It may refer to a channel between a K * M matrix, the transmitting H-pol antenna UCA 520 and the receiving H-pol antenna UCA 610.

Includes; (640 detector signal), the receiving device 600 is a dual polarization antenna UCA, demodulator 630, and signal detector. For example, a dual-polarized antenna UCA may include receiving H-pol antenna UCA 610 and a receiving V-pol antenna UCA 620.

Receiving H-pol antenna UCA 610 is the third signal (

Figure PCTKR2017014405-appb-I000124
) It can be received. The third signal (
Figure PCTKR2017014405-appb-I000125
) It may be, the signal to be transmitted from the transmission V-pol antenna UCA 530 including the transmission-H pol UCA antenna 520 and the plurality of the transmission V-pol antenna comprising a plurality of transmitting H-pol antenna.

Receiving H-pol antenna UCA 610 and a radius of R RX, h, may comprise a plurality of receiving H-pol antenna. At this time, the number of a plurality of receiving H-pol antenna a third signal (

Figure PCTKR2017014405-appb-I000126
) It may be greater than or equal to a. That is, the number of the plurality of receiving H-pol antenna may be greater than or equal to N. For example, a plurality of receiving H-pol antenna is a first receiving H-pol antenna (610-1), a second receiving H-pol antenna (610-2), the third receiving H-pol antenna (610-3) and a fourth may include receiving H-pol antenna (610-4).

Receiving H-pol antenna UCA 610 is in a third signal received (

Figure PCTKR2017014405-appb-I000127
) It can be output to a demodulator 630.

Receiving V-pol antenna UCA 620 is the fourth signal (

Figure PCTKR2017014405-appb-I000128
) It can be received. The fourth signal (
Figure PCTKR2017014405-appb-I000129
) It may be, the signal to be transmitted from the transmission V-pol antenna UCA 530 including the transmission-H pol UCA antenna 520 and the plurality of the transmission V-pol antenna comprising a plurality of transmitting H-pol antenna.

Receiving V-pol antenna UCA 620 may include a radius R RX, v, and the plurality of receiving V-pol antenna. The radius of the receiving H-pol antenna UCA 610 and a receiving radius V-pol antenna UCA 620 in accordance with an embodiment may be implemented identically. At this time, the number of a plurality of received V-pol antenna, the fourth signal (

Figure PCTKR2017014405-appb-I000130
) It may be greater than or equal to a. That is, the number of the plurality of received V-pol antenna may be greater than or equal to N. For example, a plurality of receiving V-pol antenna is a first receiving V-pol antenna (620-1), a second receiving V-pol antenna (620-2), the third receiving V-pol antenna (620-3) and a fourth may include receiving V-pol antenna (620-4).

The received V-pol antenna UCA 620 includes a fourth signal receiver (

Figure PCTKR2017014405-appb-I000131
) It can be output to a demodulator 630.

A demodulator 630 receives the third signal (

Figure PCTKR2017014405-appb-I000132
) And the fourth signal (
Figure PCTKR2017014405-appb-I000133
) It may be performed on the demodulated OAM (Orbital Angular Momentum demodulation). At this time, the third signal (
Figure PCTKR2017014405-appb-I000134
) To be the fourth signal of the (
Figure PCTKR2017014405-appb-I000135
) Number may be equal to the N. That is, the demodulator 630 may perform demodulation on 2N OAM signals.

A demodulator 630 and a signal detector 640, a third signal (

Figure PCTKR2017014405-appb-I000136
) And the fourth signal (
Figure PCTKR2017014405-appb-I000137
) The first signal from (
Figure PCTKR2017014405-appb-I000138
) And second signal (
Figure PCTKR2017014405-appb-I000139
) Configured for calculating may be as follows.

If lower the definition in Equation 13, Equation 12 can be expressed as Equation (14).

Figure PCTKR2017014405-appb-I000140

Figure PCTKR2017014405-appb-I000141

here,

Figure PCTKR2017014405-appb-I000142
It may be a matrix defined by Equation (13).

Is substituted at a later, Equation (14) derives the equation 15 and equation 16 from equation (11) may be the same as equation (17).

Figure PCTKR2017014405-appb-I000143

At this time, using Equation 2 and Equation (17) can be obtained if the equation (18).

Figure PCTKR2017014405-appb-I000144

here,

Figure PCTKR2017014405-appb-I000145
ego,
Figure PCTKR2017014405-appb-I000146
One can. In other words,
Figure PCTKR2017014405-appb-I000147
Wow
Figure PCTKR2017014405-appb-I000148
If you know the estimate for, the third signal (
Figure PCTKR2017014405-appb-I000149
) And the fourth signal (
Figure PCTKR2017014405-appb-I000150
) The first signal from (
Figure PCTKR2017014405-appb-I000151
) And second signal (
Figure PCTKR2017014405-appb-I000152
) It can be calculated.

Signal detector 640 may detect a transmission signal by using the least square method (Least Square Method (LSM)) as shown in equation (19). The transmission signal is detected the first signal (

Figure PCTKR2017014405-appb-I000153
) And the detected second signal (
Figure PCTKR2017014405-appb-I000154
) It can be.

Figure PCTKR2017014405-appb-I000155

here,

Figure PCTKR2017014405-appb-I000156
Is a deulyigo the detected first signal and the second detected signal, F is equal to Equation (20) as a modulation matrix, W may be the same as the expression (21) as a demodulation matrix.

Figure PCTKR2017014405-appb-I000157

Figure PCTKR2017014405-appb-I000158
Wow
Figure PCTKR2017014405-appb-I000159
If a is small, the signal detector 640 may detect a transmission signal by separating Equation 19 into Equation 22 and Equation 23.

Figure PCTKR2017014405-appb-I000160

11 is a block diagram for illustrating a transmission apparatus according to an embodiment.

11, the transmission apparatus 700 according to one embodiment the spreading module (spreading module; 710), a modulator (720), H-pol UCA antenna 730, and the V-pol UCA antenna 740 It includes. The transmitting device 700 may transmit a signal to the receiver 200. Signal may include a symbol.

The modulator 720 shown in Figure 11, H-pol UCA antenna 730, and the V-pol UCA antenna 740 includes a modulator (110), H-pol UCA antenna 120 shown in Figure 2, and V the -pol UCA antenna 130 and the configuration and the operation can be substantially the same. That is, the transmission apparatus 700 may further include a spreading module 710 as compared to the transmission apparatus 100.

The spreading module 710 has a first signal (

Figure PCTKR2017014405-appb-I000161
) And second signal (
Figure PCTKR2017014405-appb-I000162
) It may be performed on an inter mode spreading (intermode spreading). For example, the spreading module 710 may perform inter-mode spreading using Unitarian matrix (unitary matrix) of m * m. At this time, soup Unitarian matrix Reading modules 710 are used may not be of the components are 0 (non-zero). Further, m is the first signal (
Figure PCTKR2017014405-appb-I000163
) To be the second signal of the (
Figure PCTKR2017014405-appb-I000164
) It may be the sum of the number. That is, the N first signal (
Figure PCTKR2017014405-appb-I000165
) And the N second signals (
Figure PCTKR2017014405-appb-I000166
) For the case of transmitting, m may be as 2N.

Spreading module 710 may output the inter mode spreading the signal to a modulator 720.

In the transmitting apparatus 700, the OAM modulated first signal to be transmitted via the H-pol antenna UCA 730 (

Figure PCTKR2017014405-appb-I000167
) And the second OAM modulated signals to be transmitted via the V-pol antenna UCA 740 (
Figure PCTKR2017014405-appb-I000168
) Can all share the same channel.

Thus, applying equation (1) to the transmission unit 700 can be expressed by equation (24).

Figure PCTKR2017014405-appb-I000169

here,

Figure PCTKR2017014405-appb-I000170
It is the first signal as an N * N (
Figure PCTKR2017014405-appb-I000171
) And the Unitarian matrix that performs the inter mode with respect to the spreading,
Figure PCTKR2017014405-appb-I000172
It is the second signal as an N * N (
Figure PCTKR2017014405-appb-I000173
) It may be a Unitarian matrix that performs the inter mode with respect to the spreading. That is, soup Unitarian matrix of m * m Reading modules 710 can be expressed as equation (25).

Figure PCTKR2017014405-appb-I000174

Thus, the receiving device 200, the signal detector may detect a transmitted signal by using Equation 26.

Figure PCTKR2017014405-appb-I000175

The transmitting device 700 is the first signal (

Figure PCTKR2017014405-appb-I000176
) And second signal (
Figure PCTKR2017014405-appb-I000177
) In an inter mode soup can minimize the interference between the spreading performed by the mode (mode) and increasing the transmission distance. Further, the H-pol UCA antenna 730 and the V-pol by making use the UCA antenna 740 transmits N mod / 2 modes respectively through low OAM mode, a low error rate at the same transmission distance (error rate) it is possible to transmit a greater number of OAM mode.

Figure 12 shows an example of simulation results, Fig. 13a shows another example of the simulation result, Figure 13b shows another example of the simulation result.

When 12 to reference to Figure 13b, it is possible to analyze the effectiveness of the dual polarized UCA OAM technology.

A. Simulation Model

Simulation was used as a half-wavelength dipole antenna having a radiation pattern UCA, such as FIG. mathematic expression of the radiation pattern of the half-wavelength dipole antenna can be expressed by Equation 27 and 28.

Figure PCTKR2017014405-appb-I000178

here,

Figure PCTKR2017014405-appb-I000179
ego,
Figure PCTKR2017014405-appb-I000180
Represents the energy angle (slant) from the z-axis in the vertical plane ZX.

The transmitted and received UCA UCA used in the simulation is to have the same eight v-pol and 8 h-pol antenna element both as shown in Figure 13a and Figure 13b, a radius of 30 λ. H-pol is for the to use a slot antenna more desirable in order to mitigate interference between polarization but was applied to a dipole antenna tilt 90 degrees to the slot antenna instead of clockwise, the dipole antenna to look at with FIG interference between the polarization domain.

14 shows another example of the simulation result.

Referring to Figure 14 may analyze the effectiveness of the dual polarized UCA OAM technology.

B. Spectral efficiency

The maximum distance of the TR (transmit-receive distance) that can be obtained from SNR = 20 dB condition shows the spectral efficiency. At this time, TR distance may be equal to the distance of the LoS path. Also the spectral efficiency in UCA OAM 14 has the maximum value at the Rayleigh distance d R (Rayleigh distance is

Figure PCTKR2017014405-appb-I000181
It is expressed in.), As the distance is increased to more than TR Rayleigh distance can be seen to decrease monotonically. On the other hand, in the case of Dual-polarized UCA OAM is a spectral efficiency that has a maximum at the 2 d R TR distance is the spectral efficiency, while increases in the 2 d R to 10 d R is reduced by approximately 11.7 bps / Hz in the conventional UCA OAM than the reduction by approximately 21.2 bps / Hz illustrates a small decline of more than 0.55 times.

Having a maximum value from the existing UCA OAM system of spectral efficiency, d, unlike in R having a maximum value Dual-polarized UCA OAM of the spectral efficiency is 2 d R is the way to a minimum the effective TR distance than traditional UCA OAM system 2 the times or more means to improve.

Figs. 15a and 15b shows another example of the simulation result.

When Figs. 15a and FIG. 15b, it is possible to analyze the effectiveness of the dual polarized UCA OAM technology.

C. E-field intensity of OAM states

zero-degree slanted transmit to one of the UCA the transmission mode and from the transmit mode in the 90-degree slanted transmit UCA to plot the V-pol components and the H-pol component of the E-field intensity having from 500 m position apart from the transmitter.

Figure 15a is a zero-degree slanted v-pol component of a signal transmitted from a UCA show that significantly more received h-pol component, which v has a mode 0, 1, -1 it is received by receiving zero-degree slanted UCA -pol means that the signal is less subject to interference of the h-pol signal.

Figure 15b is a 90-degree slanted show that received relatively stronger than h-pol components are v-pol component of the signal transmitted from the UCA, this is mode 0, 1, -1 received as a reception 90-degree slanted UCA the h-pol signal has meant that receive small v-pol interfering signal.

Figure 16a and 16b shows another example of the simulation result.

When FIG. 16a and FIG. 16b, it is possible to analyze the effectiveness of the dual polarized UCA OAM technology.

D. Decoding performance

A 64-QAM signal constellation 6 is a plot of the signal that appears after the transmission, by receiving the signal via the equalization 6 OAM mode.

On the other hand capable of receiving three mode from among the existing single polarized UCA system 6 mode in Figures 16a to the low SER, it can be received from the road 16b dual polarized UCA system signals of six mode both at a low SER the can be seen.

17 shows another example of the simulation result.

17, is a plot of change in the SER according to the SNR. Traditional single-polarized UCA OAM while clearly observed the error floor according to an SNR, dual-polarized UCA OAM technology shows a tendency to decrease SER is 1/100 times to increase the SNR 10 dB.

Figure 18a and Figure 18b represents another example of the simulation result, Figure 19 shows another example of the simulation result.

Referring to Figure 18a to Figure 19, it is possible to analyze the effectiveness of the dual polarized UCA OAM technology.

E. Impact of intermode spreading

Figure 18a and Figure 18b will the the case of applying the intermode spreading between OAM mode at the transmitter plot the effective field intensity of the baseband signal, 19 is that each of the OAM mode by applying the intermode despreading the signals transmitted do so in the receiver It shows the effect of spreading intermode OAM technology that will experience the same channel.

Figure 18a and E-field intensity of the baseband signal transmitted at zero-degree slanted transmit UCA in Figure 18b are identical to each other and, 90-degree slanted that the E-field intensity of the baseband signals transmitted from the transmit UCA both know each other, the same have. This is leading to an effect of reducing the overall average error rate, since they both experience the same level of a transmission signal error rate.

In Figure 19 shows the degree of reducing the average error rate. In both Figure 19 shows that shows that the SNR gain can be obtained at least 1 dB over the intermode spreading in the high SNR region.

20 shows another example of the simulation result.

Referring to Figure 20, intermode through spreading dual polarized UCA OAM technology that applies to the additionally required compared to the SNR required for transmitting the three mode in the conventional single polarized UCA OAM technology to send and receive six mode at 500 m distance shows that the SNR of only 3 dB.

21 shows another example of the simulation result.

Referring to Figure 21, it shows the SER in accordance with the distance of the TR when transmitting the 6 modes in terms of SNR = 20 dB. When the Dual UCA OAM technology through the effective TR distance possible SER sent to a certain level below the signal compared to the conventional technique, as shown in the figure UCA OAM be based on the SER = 10-2, in some cases the 64-QAM signal 1 is improved 2.7 times from the d R to 3.6 d R, the case of 16-QAM signal 4.7 times in 1.7 d R to 8.1 d R, and in the case of QPSK signal is observed at 2.1 d R improved nine times to 19 d R.

The use of two basis (dual polarized UCA antenna) according to the polarization characteristics of the antenna element to present a method of increasing the transmission distance and, theoretically half wavelength dipole antenna in order to verify the advantage of the proposed technique has, compared to traditional techniques radiation implement a simulator applying the pattern, and comparing the performance was verified according to the SNR and the transmission distance.

The proposed technology is dual polarized antenna using the UCA and increasing the simultaneous transmission possible number of transmission and reception mode in the specific distance, using the intermode spreading between the mode belonging to each polarization domain to further extend the reach of the multi-mode signal.

Simulation results radius 30 λ of Dual-polarized UCA antenna through shows the proposed Dual polarization UCA OAM technology having to successfully increase the reach of the mode signal of a given number than the conventional single polarized UCA OAM technology, proposed technique to transfer six OAM mode at 500 m distance using, and showed that accompanying the conventional SNR loss of 3 dB less than the UCA to OAM technology transfers the number of double mode at the same distance.

The device described above may be implemented in a combination of hardware components, software components, and / or hardware components and software components. For example, the devices and components described in the embodiments is, for example, processors, controllers, ALU (arithmetic logic unit), a digital signal processor (digital signal processor), a microcomputer, FPGA (field programmable gate array) , may be implemented using one or more general purpose computer or a special purpose computer, such as any other device capable of PLU (programmable logic unit), running a microprocessor, or a command (instruction), and the response. Processing unit may perform one or more software applications that run on an operating system (OS) and the operating system. The processing apparatus may be in response to the execution of the software, access, storage, handling, processing and generating data. For convenience of understanding, the processing device is one of ordinary skill in the Figure, but if the said to be one that uses the art, the processing apparatus to which a plurality of processing elements (processing element) and / or processing elements in the plurality of types of it can be seen that can contain. For example, the processing device may comprise a plurality of processors or one processor and a controller. Further, it is also possible, other processing configurations (processing configuration), such as a parallel processor (parallel processor).

Software is a computer program (computer program), code (code), a command (instruction), or may include one or more combinations of these, or in the associative configuration or independently of the processing device to operate as desired (collectively) treatment you can command the device. Software and / or data, for analysis by the processing device or to provide a command or data to a processing device, any type of machine, component (component), the physical devices, the virtual device (virtual equipment), computer storage media or device permanently, or transmitted wave signal (signal wave) which is, or may be temporarily embodiment (embody). Software may be executed split up on computer systems connected through a network, or stored in a distributed way. Software and data may be stored in one or more computer-readable media.

The process according to the embodiment is implemented in program instruction form that can be executed by various computer it means to be recorded in computer-readable media. The media may also include, alone or in combination with the program instructions, data files, data structures, and the like. The media and program instructions may be possible especially ones designed and configured, or is known to those skilled in the art using computer software to the embodiment. Examples of the computer readable recording medium such as an optical recording medium (optical media), flop tikeol disk (floptical disk) such as a magnetic medium (magnetic media), CD-ROM, DVD, such as hard disks, floppy disks, and magnetic tape - hardware devices that are specially configured to store the program instructions, such as an optical medium (magneto-optical media), and read-only memory (ROM), random access memory (RAM), flash memory and perform. Examples of program instructions include both machine code, such as produced by a compiler, using an interpreter for a high-level language code that can be executed by a computer. The described hardware devices may be configured to act as one or more software modules in order to perform the embodiment of operation, and vice versa.

Although embodiments have been described and specific examples as described above, those skilled in the art can be various modifications, additions and substitutions from the description above. For example, the described techniques may be performed in a way different from the order described, and / or described system, architecture, device, circuit, etc. of the components described the methods and or combined or in combination with other forms, other components, or it can be the appropriate result achieved even replaced or substituted by equivalents.

Therefore, other implementations, other embodiments and within the scope of the claims to be described later things by the claims and equivalents.

Claims (15)

  1. A first modulator (modulator) performing OAM modulated (Orbital Angular Momentum modulation) and to the second signal signal;
    H-pol antenna UCA comprising a plurality of horizontal polarization antennas (horizontal polarized antenna) for transmitting OAM modulated first signal (uniform circular array antenna); And
    V-pol antenna UCA comprising a plurality of vertical polarization antennas (vertical polarized antenna) for transmitting OAM modulated second signal
    The transmission apparatus includes a.
  2. According to claim 1,
    The number of the number of the first signal and the second signal is identical
    Transmitting device.
  3. According to claim 1,
    The number of said plurality of horizontal polarization antennas is equal to or greater than the number of the first signal
    Transmitting device.
  4. According to claim 1,
    The number of the plurality of vertical polarized antenna is equal to or greater than the number of said second signal
    Transmitting device.
  5. According to claim 1,
    The H-pol radius of the radius and the V-pol antenna of UCA UCA antenna is the same
    Transmitting device.
  6. According to claim 1,
    The H-pol antenna UCA,
    Line-of-sight path through the first channel (channel) is determined based on a (line-of-sight (LoS) path) and propagation (propagation path) and transmitting the OAM the modulated first signal,
    The V-pol antenna UCA,
    Over a second channel, which is determined on the basis of the above line-of-sight path and the radio wave for transmitting a second signal obtained by the modulation OAM
    Transmitting device.
  7. 7. The method of claim 6,
    The first channel,
    Channel and between the H-pol antenna and the receiving UCA UCA H-pol antenna, comprising: a channel between the H-pol antenna and the receiving UCA UCA V-pol antenna,
    The second channel,
    Channel and between the V-pol antenna and the receiving UCA UCA H-pol antenna, comprising a channel between the V-pol antenna and the receiving UCA UCA V-pol antenna
    Transmitting device.
  8. The method of claim 7,
    The H-pol antenna UCA,
    To the receiving H-pol antenna and the receiving UCA UCA V-pol antenna, and transmitting the OAM the modulated first signal,
    The V-pol antenna UCA,
    Transmitting a second signal wherein the OAM modulated to the receiving H-pol antenna and the receiving UCA UCA V-pol antenna
    Transmitting device.
  9. According to claim 1,
    The first signal and the spreading module for performing inter-mode spreading (spreading intermode) to said second signal (spreading module)
    The transmission apparatus further comprises a.
  10. 10. The method of claim 9,
    The spreading module,
    Use Unitarian matrix (unitary matrix) of m * m: performing the inter mode, and spreading,
    Wherein m is the sum of the number of the number of said first signal and said second signal
    Transmitting device.
  11. The H-pol antenna UCA comprising a plurality of horizontal polarization antenna for receiving the third signal;
    The V-pol antenna UCA comprising a plurality of vertically-polarized antennas for transmitting the fourth signal; And
    A demodulator for performing OAM demodulation (demodulation) on the said third signal and said fourth signal (demodulator)
    The receiving apparatus comprising a.
  12. 12. The method of claim 11,
    Signal detector (signal detector) for detecting a transmission signal by using the least square method to the third signal and the fourth signal is demodulated OAM OAM demodulation (Least Square Method (LSM))
    The receiving apparatus further comprises.
  13. 12. The method of claim 11,
    It said third signal and said fourth signal are,
    Transmitted from the transmission V-pol antenna UCA comprising a transmitting H-pol antenna UCA and a plurality of vertical polarization antenna including a plurality of horizontal polarization antennas
    Receiving apparatus.
  14. 12. The method of claim 11,
    The number of the number of the third signal and the fourth signal is identical
    Receiving apparatus.
  15. 12. The method of claim 11,
    The H-pol radius of the radius and the V-pol antenna of UCA UCA antenna is the same
    Receiving apparatus.
PCT/KR2017/014405 2017-02-23 2017-12-08 Communication device using uca antenna including dual polarization antenna WO2018155795A1 (en)

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