KR102647891B1 - Segmented beamforming-based multi-beam spatial vector combining mimo communication system - Google Patents

Abstract

The MIMO communication system may include a transmitting device that transmits a plurality of segmented beams, and a receiving device that receives a high-order QAM signal. The transmitting device may include at least two sub-transmitters that generate different types of segmented beams. The transmitting device may transmit the high-order QAM signal generated by spatial vector combining of the plurality of segmented beams in the LoC area to the receiving device.

Description

SEGMENTED BEAMFORMING-BASED MULTI-BEAM SPATIAL VECTOR COMBINING MIMO COMMUNICATION SYSTEM}

The present invention relates to a MIMO communication system, and more specifically, to a segmented beamforcing-based multi-beam space vector combining MIMO communication system that generates a high-order QAM signal according to space vector combining of QPSK signals.

Since the commercialization of the 5G communication system using the sub-6 GHz band, efforts are being made to develop an improved 5G communication system or pre-5G communication system to meet the continuously increasing demand for wireless data traffic. For this reason, the 5G communication system or Beyond-5G (B5G) communication system is called a Beyond 4G Network communication system or a Post LTE communication system. To achieve high data rates, 5G communication systems must be accompanied by the utilization of mmWave bands (such as the 28GHz band in Korea). In order to alleviate the path loss of radio waves in the millimeter wave band and increase the transmission distance of radio waves, the 5G communication system uses beamforming, massive array multiple input/output (massive MIMO), and full dimension multiple input/output (FD- MIMO), array antenna, analog beam-forming, and large scale antenna technologies are being discussed. In addition, to improve the network of the system, the 5G communication system uses advanced small cells, advanced small cells, cloud radio access networks (cloud RAN), and ultra-dense networks. , Device to Device communication (D2D), wireless backhaul, moving network, cooperative communication, CoMP (Coordinated Multi-Points), and interference cancellation. Technology development is underway. In addition, the 5G system uses FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), which are advanced coding modulation (ACM) methods, and advanced access technologies such as FBMC (Filter Bank Multi Carrier) and NOMA. (non orthogonal multiple access), and SCMA (sparse code multiple access) are being developed.

Meanwhile, as 5G communication networks are being built in earnest, interest in high-capacity MIMO (e.g., massive-MIMO) communication systems using millimeter waves is rapidly increasing. The current 5G communication system uses mmWave as an auxiliary technology due to technical limitations in the mmWave band, but in the Beyond 5G Network and 6G ecosystem, mmWave and THz proximity bands will be used as core frequency bands for ultra-low latency, high-capacity, high-speed communication. It is expected to be used. In particular, because the size of the antenna element is reduced in the millimeter wave or higher bands, point-to-point communication is possible using a high-capacity MIMO communication system based on a high-scale array (large-scale) antenna. Because large-capacity MIMO communication systems use multiple antennas and multiple RF-chains, it is essential to have a design structure that can minimize RF power consumption by simultaneously considering the transmitter, receiver, and antenna. Therefore, because it is necessary to utilize not only single beamforming but also multiple beams simultaneously, research is needed on a high-efficiency next-generation millimeter wave massive-MIMO hardware platform with a new structure. In addition, since multiple devices communicate together in a large-capacity MIMO communication system, an innovative hardware platform that takes security into account is required. Therefore, there is a need to develop a new MIMO beamforming communication system that can efficiently utilize point-to-point communication technology in a 6G environment.

Korean Patent No. 10-1122384 “Method and device for power allocation and/or rate selection for UL MIMO/SIMO operation considering PAR”

One purpose of the present invention is to provide a MIMO communication system and MIMO communication method that amplifies and outputs a basic QPSK signal and generates a high-order QAM signal according to space vector combination of QPSK signals.

Another object of the present invention is to provide a MIMO communication system and MIMO communication method that can solve I/Q crosstalk, signal combining loss, and signal combining isolation problems.

Another object of the present invention is to provide a MIMO communication system and MIMO communication method that improves the security of the communication signal transmission and reception process by controlling the LoC area where high-order QAM signals are combined and accurately providing high-order QAM signals to the target receiving device. .

However, the problem to be solved by the present invention is not limited to the above-mentioned problem, and may be expanded in various ways without departing from the spirit and scope of the present invention.

In order to achieve an object of the present invention, a MIMO communication system according to embodiments of the present invention may include a transmitting device that transmits a plurality of segmented beams, and a receiving device that receives a high-order QAM signal. You can. The transmitting device may include at least two sub-transmitters that generate different types of segmented beams. The transmitting device may transmit a high-order QAM signal generated by spatial vector combining of a plurality of segmented beams in the LoC area to the receiving device.

In one embodiment, each of the sub-transmitters may include a QPSK modulator, up-converter, amplifier, and segmented beamforming array. The segmented beamforming array can generate the segmented beam having a predetermined power level.

In one embodiment, the segmented beam may include at least one of a QPSK signal, a 16-QAM signal, and a 64-QAM signal.

In one embodiment, the transmitting device performs array decimating on a data stream, array interleaving on the data stream, and QPSK modulating on a QPSK signal. Up-converting can be performed on the QPSK signal, and output level amplification can be performed on at least one of the IF signal and the millimeter wave signal.

In one embodiment, the transmitting device may include an SBA module in which a plurality of the segmented beamforming arrays are arranged. The SBA module may include the segmented beamforming array composed of M*N matrices (where M and N are natural numbers).

In one embodiment, one of the segmented beams may have an output level difference in multiples of 3 dB from another segmented beam.

In one embodiment, the receiving device may be located in the LoC area. The LoC area may include the I-axis for In Phase modulation, the Q-axis for Quadarture Phase modulation, and the S-axis for security modulation.

In one embodiment, the transmitting device may control the LoC area where the segmented beam is output by changing at least one of the phase, amplitude, and direction of the transmitted segmented beam.

In one embodiment, the sub-transmitter may generate at least two of a first QPSK signal of a first output level, a second QPSK signal of a second output level, and a third QPSK signal of a third output level. The transmitting device may output at least two of the first QPSK signal, the second QPSK signal, and the third QPSK signal to the LoC area. At least two of the first QPSK signal, the second QPSK signal, and the third QPSK signal may be modulated into the high-order QAM signal as the space vector is defective in the LoC region.

In one embodiment, the sub-transmitter transmits at least two of a first 16-QAM signal of a first output level, a second 16-QAM signal of a second output level, and a third 16-QAM signal of a third output level. can be created. The transmitting device may output at least two of the first 16-QAM signal, the second 16-QAM signal, and the third 16-QAM signal to the LoC area. At least two of the first 16-QAM signal, the second 16-QAM signal, and the third 16-QAM signal may be modulated into the higher-order QAM signal as the space vector is defective in the LoC area.

In order to achieve another object of the present invention, the MIMO communication method according to embodiments of the present invention may include transmitting a plurality of segmented beams and receiving a high-order QAM signal. . Transmitting the plurality of segmented beams includes generating different types of segmented beams, outputting the plurality of segmented beams to the LoC area, and transmitting the plurality of segmented beams to the LoC area. It may include generating a high-order QAM signal by spatial vector combining in the LoC area.

In one embodiment, the step of transmitting the plurality of segmented beams includes changing at least one of the phase, amplitude, and direction of the transmitted segmented beams, thereby dividing the LoC area where the segmented beams are output. You can control it.

The MIMO communication system and MIMO communication method of the present invention amplifies and outputs a basic QPSK signal and generates a high-order QAM signal according to space vector combination of QPSK signals, thereby reducing the power consumption required for high-order QAM signal modulation and reducing the overall communication system. Efficiency can increase.

In addition, since the MIMO communication system and MIMO communication method of the present invention do not combine multiple I/Qs on the circuit, I/Q Crosstalk, Signal Combining Loss, and Signal Combining Separation ( Combining Isolation) problem can be solved.

In addition, the MIMO communication system and MIMO communication method of the present invention can improve the security of the communication signal transmission and reception process by controlling the LoC area where high-order QAM signals are combined and accurately providing high-order QAM signals to the target receiving device.

However, the effects of the present invention are not limited to the effects described above, and may be expanded in various ways without departing from the spirit and scope of the present invention.

1 is a diagram showing the configuration of a MIMO communication system according to embodiments of the present invention.
FIG. 2 is a diagram illustrating transmission of a plurality of segmented beams in the MIMO communication system of FIG. 1.
Figure 3 is a diagram showing the SBA module of the transmission device.
Figure 4 is a diagram showing an example of a sub-transmitter that generates a plurality of segmented beams.
FIG. 5 is a diagram showing space vector combining of a plurality of segmented beams in the MIMO communication system of FIG. 1.
Figure 6 is a diagram showing a high-order QAM signal received by a receiving device in the LoC area.
Figure 7 is a diagram showing the combination of a plurality of QPSK signals generated from the SBA module.
Figure 8 is a diagram showing a combination of multiple 16-QAM signals generated from the SBA module.
Figure 9 is a diagram showing the result of generating a high-order QAM signal by combining space vectors of a plurality of segmented signals.
Figure 10 is a flowchart showing a MIMO communication method according to embodiments of the present invention.
Figure 11 is a flowchart showing a specific method of transmitting a segmented beam in the MIMO communication method.

Specific structural or functional descriptions of the embodiments according to the concept of the present invention disclosed in this specification are merely illustrative for the purpose of explaining the embodiments according to the concept of the present invention. They may be implemented in various forms and are not limited to the embodiments described herein.

Since the embodiments according to the concept of the present invention can make various changes and have various forms, the embodiments will be illustrated in the drawings and described in detail in this specification. However, this is not intended to limit the embodiments according to the concept of the present invention to specific disclosed forms, and includes changes, equivalents, or substitutes included in the spirit and technical scope of the present invention.

Terms such as first or second may be used to describe various components, but the components should not be limited by the terms. The terms are used solely for the purpose of distinguishing one component from another, for example, a first component may be named a second component, and similar Thus, the second component may also be referred to as the first component.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between. Expressions that describe the relationship between components, such as “between”, “immediately between” or “directly adjacent to”, should be interpreted similarly.

The terminology used herein is only used to describe specific embodiments and is not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this specification, terms such as "include" or "have" are intended to designate the presence of a described feature, number, step, operation, component, part, or combination thereof, and one or more other features or numbers, It should be understood that this does not exclude in advance the possibility of the presence or addition of steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms as defined in commonly used dictionaries should be interpreted as having meanings consistent with the meanings they have in the context of the related technology, and unless clearly defined in this specification, should not be interpreted in an idealized or overly formal sense. No.

Hereinafter, embodiments will be described in detail with reference to the attached drawings. However, the scope of the patent application is not limited or limited by these examples. The same reference numerals in each drawing indicate the same members.

1 is a diagram showing the configuration of a MIMO communication system according to embodiments of the present invention.

Referring to FIG. 1, the MIMO communication system of the present invention may include a transmitting device (TX) that transmits a plurality of segmented beams, and a receiving device (RX) that receives a high-order QAM signal.

The transmitting device TX may receive a data stream, generate a plurality of segmented beams, and output a plurality of segmented beams.

Specifically, the transmitter TX may include at least two sub-transmitters that generate different types of segmented beams.

In one embodiment, each of the sub-transmitters may include an array decimator, an array interleaver, a QPSK modulator, an up-converter, an amplifier, and a segmented beamforming array. there is.

For example, array decimating can be performed on an array decimator data stream.

For example, an array interleaver may perform array interleaving on the data stream.

For example, a QPSK modulator can perform QPSK modulating a QPSK signal.

For example, an up-converter can generate an IF signal and a millimeter wave signal by performing up-converting on the QPSK signal. In one embodiment, the up-converter can up-convert three QPSK signals into an IF signal in the 2.8 GHz band and a 28 GHz millimeter wave signal, respectively.

For example, the amplifier may perform output level amplification on at least one of an IF signal and a millimeter wave signal. In one embodiment, the amplifier may be a high power amplifier (HPA).

For example, a segmented beamforming array can generate the segmented beam having a predetermined power level.

In one embodiment, the segmented beam may be spatial vector combined in the LoC area.

For example, the transmitting device (TX) may transmit a high-order QAM signal generated by spatial vector combining of a plurality of segmented beams in the LoC area to the receiving device (RX).

The receiving device (RX) can receive a high-order QAM signal generated based on a plurality of segmented beams.

FIG. 2 is a diagram illustrating transmission of a plurality of segmented beams in the MIMO communication system of FIG. 1.

Referring to FIG. 2, the transmitting device TX may generate a plurality of segmented beams and output the plurality of segmented beams to the LoC area.

The segmented beam may include at least one of a QPSK signal, a 16-QAM signal, and a 64-QAM signal. However, this is only an example of a segmented beam, and the segmented beam of the MIMO communication system of the present invention is not limited to QPSK signals, 16-QAM signals, and 64-QAM signals.

The segmented beam may have a predetermined power level. For example, one of the segmented beams may have an output level difference in multiples of 3 dB from another segmented beam.

As shown in FIG. 2, the transmitting device TX may include first to third sub-transmitters.

For example, the first sub-transmitter may generate a first segmented beam of a first output level. For example, the second sub-transmitter may generate a second segmented beam of a second output level. For example, the third sub-transmitter may generate a third segmented beam of a third output level.

The transmitting device (TX) may output a plurality of segmented beams to each LoC area. For example, the transmitting device TX may output a first segmented beam, a second segmented beam, and a third segmented beam to the LoC area. For example, the LoC area is a Line of Combination area, where a receiving device (RX) can be located.

A plurality of segmented beams may be spatial vector combined in the LoC area. For example, the first segmented beam, the second segmented beam, and the third segmented beam can be space-vector combined in the LoC region and thus modulated into a high-order QAM signal.

Figure 3 is a diagram showing the SBA module of the transmission device.

Referring to FIG. 3, the transmitting device may include an SBA module in which a plurality of the segmented beamforming arrays are arranged.

The SBA module may include a plurality of segmented beamforming arrays. For example, the SBA module may include the segmented beamforming array composed of M*N matrices (where M and N are natural numbers).

Multiple sub transmitters can share and use the SBA module. For example, the plurality of sub-transmitters may selectively use the segmented beamforming array included in the SBA module. For example, the sub-transmitter may generate a segmented beam using at least one of the 1-1 segmented beamforming array (SBA 1-1) to the M-N segmented beamforming array (SBA M-N). there is.

Figure 4 is a diagram showing an example of a sub-transmitter that generates a plurality of segmented beams.

Referring to FIG. 4, the transmission device may include at least two sub-transmitters that generate different types of segmented beams.

For example, as shown in FIG. 4(a), the transmitting device may include two sub-transmitting units that generate two different types of segmented beams. In this case, the transmitting device may generate two different types of segmented beams using two different segmented beamforming arrays (eg, SBA #1 and SBA #2).

For example, as shown in FIG. 4(b), the transmitting device may include three sub-transmitting units that generate three different types of segmented beams. In this case, the transmitting device can use three different segmented beamforming arrays (e.g., SBA #3, SBA #4, and SBA #5) to generate the three different types of segmented beams. there is.

For example, the segmented beam may include at least one of a QPSK signal, a 16-QAM signal, and a 64-QAM signal.

The output level of one segmented beam may be 1/2 times the output level of any other segmented beam. In other words, the output level of one segmented beam may be twice the output level of any other segmented beam.

For example, one of the segmented beams may have an output level difference in multiples of 3 dB from another segmented beam.

FIG. 5 is a diagram showing space vector combining of a plurality of segmented beams in the MIMO communication system of FIG. 1, and FIG. 6 is a diagram showing a high-order QAM signal received by a receiving device in the LoC area.

Referring to FIG. 5, a plurality of segmented beams can be modulated into a high-order QAM signal by combining space vectors in the LoC area.

For example, the first QPSK signal (QPSK #1) and the second QPSK signal (QPSK #1) can be space vector combined in the LoC region and thus modulated into a 16-QAM signal.

For example, the third QPSK signal (QPSK #3), the fourth QPSK signal (QPSK #4), and the fifth QPSK signal (QPSK #5) are space vector combined in the LoC region to be modulated into a 64-QAM signal. You can.

In this way, the MIMO communication system of the present invention amplifies and outputs a basic QPSK signal and generates a high-order QAM signal by combining the space vectors of the QPSK signals, thereby reducing the power consumption required for modulating the high-order QAM signal and improving the overall communication system. Efficiency can increase.

In addition, since the MIMO communication system of the present invention does not combine multiple I/Qs on the circuit, problems such as I/Q crosstalk, signal combining loss, and signal combining isolation occur. can be solved.

Referring to FIGS. 5 and 6, the receiving device may be located in the LoC area.

By controlling the LoC area where the high-order QAM signal is combined, the transmitting device can accurately provide the high-order QAM signal to the target receiving device.

For example, the LoC area may include the I-axis for In Phase modulation, the Q-axis for Quadarture Phase modulation, and the S-axis for secure modulation.

The transmitting device may control the LoC area where the segmented beam is output by changing at least one of the phase, amplitude, and direction of the transmitted segmented beam.

For example, the transmitting device can change the position where the segmented beam is combined with the space vector through movement about the Q-axis, I-axis, and S-axis of the LoC area.

In this case, the security of the higher-order QAM signal received at the receiving device can be improved.

For example, as shown in FIG. 5, even when at least one of the phase, amplitude, and direction of the segmented beam changes, the target receiving device in the LoC area (e.g., RX1, RX2 in FIG. 5) receives normal high-order A QAM signal (Complete and secured data) can be received.

On the other hand, when at least one of the phase, amplitude, and direction of the segmented beam changes, an external receiving device outside the LoC area (e.g., SPY in FIG. 5) receives an abnormal signal with damaged constellation (scrambled and missing data). You can receive it.

In this way, the MIMO communication system of the present invention can improve the security of the communication signal transmission and reception process by controlling the LoC area where high-order QAM signals are combined and accurately providing high-order QAM signals to the target receiving device.

Figure 7 is a diagram showing the combination of a plurality of QPSK signals generated from the SBA module.

Referring to FIG. 7, the MIMO communication system can generate a high-order QAM signal by combining QPSK signals.

The sub-transmitter may generate at least two of a first QPSK signal of a first output level, a second QPSK signal of a second output level, and a third QPSK signal of a third output level.

The transmitting device may output at least two of the first QPSK signal, the second QPSK signal, and the third QPSK signal to the LoC area.

At least two of the first QPSK signal, the second QPSK signal, and the third QPSK signal may be modulated into the high-order QAM signal as the space vector is defective in the LoC region.

As shown in FIG. 7, the transmitting device can generate different high-order QAM signals based on the number of SBAs to be combined. In other words, the transmitting device can generate a 4 ^{combined SBA number} -QAM signal depending on the number of combined SBAs.

For example, when two QPSK signals of different output levels are space vector combined, a 16-QAM signal can be generated. For example, when three QPSK signals of different output levels are combined with space vectors, a 64-QAM signal can be generated. For example, when four QPSK signals of different output levels are space vector combined, a 256-QAM signal can be generated.

Figure 8 is a diagram showing a combination of multiple 16-QAM signals generated from the SBA module.

Referring to FIG. 8, a high-order QAM signal can be generated by combining 16-QAM signals.

The sub-transmitter may generate at least two of a first 16-QAM signal of a first output level, a second 16-QAM signal of a second output level, and a third 16-QAM signal of a third output level.

The transmitting device may output at least two of the first 16-QAM signal, the second 16-QAM signal, and the third 16-QAM signal to the LoC area.

At least two of the first 16-QAM signal, the second 16-QAM signal, and the third 16-QAM signal may be modulated into the higher-order QAM signal as the space vector is defective in the LoC area.

As shown in FIG. 8, the transmitting device can generate different high-order QAM signals based on the number of SBAs to be combined. That is, the transmitting device can generate a 16 ^{combined SBA number} -QAM signal depending on the number of combined SBAs.

For example, when two 16-QAM signals of different output levels are space vector combined, a 256-QAM signal can be generated. For example, when three 16-QAM signals of different output levels are space vector combined, a 4096-QAM signal can be generated. For example, when four 16-QAM signals of different output levels are space vector combined, a 65536-QAM signal can be generated.

Figure 9 is a diagram showing the result of generating a high-order QAM signal by combining space vectors of a plurality of segmented signals.

Referring to FIG. 9, the MIMO communication system can generate a high-order QAM signal by combining space vectors of a plurality of segmented beams.

For example, Figure 9(a) is a first QPSK signal of 0dB, Figure 9(b) is a second QPSK signal of -3dB, and Figure 9(c) is a third QPSK signal of -6dB. A high-order QAM signal can be generated by combining space vectors of the first QPSK signal, the second QPSK signal, and the third QPSK signal.

For example, Figure 9(d) shows a 64-QAM signal generated by space vector combination of the first QPSK signal, the second QPSK signal, and the third QPSK signal.

In this way, the MIMO communication system of the present invention amplifies and outputs a basic QPSK signal and generates a high-order QAM signal by combining the space vectors of the QPSK signals, thereby reducing the power consumption required for modulating the high-order QAM signal and improving the overall communication system. Efficiency can increase.

FIG. 10 is a flowchart showing a MIMO communication method according to embodiments of the present invention, and FIG. 11 is a flowchart showing a specific method of transmitting a segmented beam in the MIMO communication method.

Referring to FIGS. 10 and 11, the MIMO communication method may include transmitting a plurality of segmented beams (S100) and receiving a high-order QAM signal (S200).

Transmitting the plurality of segmented beams (S100) includes generating different types of segmented beams (S110), outputting the plurality of segmented beams to the LoC area (S120), It may include generating a high-order QAM signal by spatial vector combining the plurality of segmented beams in the LoC area (S130).

Therefore, the MIMO communication method of the present invention amplifies and outputs a basic QPSK signal and generates a high-order QAM signal according to space vector combination of QPSK signals, thereby reducing the power consumption required for high-order QAM signal modulation and improving the overall communication system efficiency. This may increase.

In addition, since the MIMO communication method of the present invention does not combine multiple I/Qs on the circuit, problems such as I/Q crosstalk, signal combining loss, and signal combining isolation occur. can be solved.

In one embodiment, the step of transmitting the plurality of segmented beams (S100) includes changing at least one of the phase, amplitude, and direction of the transmitted segmented beam, so that the segmented beam is output. The LoC area can be controlled.

Therefore, the MIMO communication method of the present invention can improve the security of the communication signal transmission and reception process by controlling the LoC area where high-order QAM signals are combined and accurately providing high-order QAM signals to the target receiving device.

However, since this has been described above, redundant description thereof will be omitted.

The device described above may be implemented with hardware components, software components, and/or a combination of hardware components and software components. For example, devices and components described in embodiments may include, for example, a processor, a controller, an arithmetic logic unit (ALU), a digital signal processor, a microcomputer, a field programmable array (FPA), It may be implemented using one or more general-purpose or special-purpose computers, such as a programmable logic unit (PLU), microprocessor, or any other device capable of executing and responding to instructions. A processing device may execute an operating system (OS) and one or more software applications that run on the operating system. Additionally, a processing device may access, store, manipulate, process, and generate data in response to the execution of software. For ease of understanding, a single processing device may be described as being used; however, those skilled in the art will understand that a processing device includes multiple processing elements and/or multiple types of processing elements. It can be seen that it may include. For example, a processing device may include a plurality of processors or one processor and one controller. Additionally, other processing configurations, such as parallel processors, are possible.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded on a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc., singly or in combination. Program instructions recorded on the medium may be specially designed and configured for the embodiment or may be known and available to those skilled in the art of computer software. Examples of computer-readable recording media include magnetic media such as hard disks, floppy disks, and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floptical disks. -Includes optical media (magneto-optical media) and hardware devices specifically configured to store and execute program instructions, such as ROM, RAM, flash memory, etc. Examples of program instructions include machine language code, such as that produced by a compiler, as well as high-level language code that can be executed by a computer using an interpreter, etc. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Although the embodiments have been described with limited drawings as described above, various modifications and variations can be made by those skilled in the art from the above description. For example, the described techniques are performed in a different order than the described method, and/or components of the described system, structure, device, circuit, etc. are combined or combined in a different form than the described method, or other components are used. Alternatively, appropriate results may be achieved even if substituted or substituted by an equivalent. Therefore, other implementations, other embodiments, and equivalents of the claims also fall within the scope of the claims described below.

TX: Transmitting device
RX: receiving device
LoC: LoC area
SBA: Segmented Beamforming Array

Claims (12)

A transmitting device that transmits a plurality of segmented beams; and
A receiving device for receiving a high-order QAM signal,
The transmitting device is,
It includes at least two sub-transmitters that generate different types of segmented beams,
The transmitting device is,
Characterized in transmitting the high-order QAM signal generated by spatial vector combining of a plurality of the segmented beams in the LoC area to the receiving device,
MIMO communication system. According to paragraph 1,
Each of the sub transmitters,
Includes a QPSK modulator, up-converter, amplifier, and segmented beamforming array,
The segmented beamforming array,
Characterized in generating the segmented beam having a predetermined power level,
MIMO communication system. According to paragraph 2,
The segmented beam is,
Characterized in that it includes at least one of a QPSK signal, a 16-QAM signal, and a 64-QAM signal,
MIMO communication system. According to paragraph 2,
The transmitting device is,
Performs array decimating on the data stream,
Performing array interleaving on the data stream,
Performs QPSK modulating on the QPSK signal,
Perform up-converting on the QPSK signal,
Characterized in performing output level amplification on at least one of the IF signal and the millimeter wave signal,
MIMO communication system. According to paragraph 2,
The transmitting device is,
Comprising an SBA module in which a plurality of the segmented beamforming arrays are arranged,
The SBA module is,
Characterized in that it includes the segmented beamforming array composed of M*N matrices (where M and N are natural numbers),
MIMO communication system. According to paragraph 2,
One of the segmented beams is,
Characterized in that it has an output level difference in multiples of 3 dB from any other segmented beam,
MIMO communication system. According to paragraph 2,
The receiving device is located in the LoC area,
The LoC area is,
Characterized by comprising an I-axis for In Phase modulation, a Q-axis for Quadarture Phase modulation, and an S-axis for security modulation.
MIMO communication system. In clause 7,
The transmitting device is,
Characterized in controlling the LoC area where the segmented beam is output by changing at least one of the phase, amplitude, and direction of the transmitted segmented beam,
MIMO communication system. According to paragraph 2,
The sub transmitter,
generate at least two of a first QPSK signal at a first output level, a second QPSK signal at a second output level, and a third QPSK signal at a third output level;
The transmitting device is,
Outputting at least two of the first QPSK signal, the second QPSK signal, and the third QPSK signal to the LoC area,
At least two of the first QPSK signal, the second QPSK signal, and the third QPSK signal,
Characterized in that it is modulated into the high-order-QAM signal according to the space vector defect in the LoC area,
MIMO communication system. According to paragraph 2,
The sub transmitter,
Generate at least two of a first 16-QAM signal at a first output level, a second 16-QAM signal at a second output level, and a third 16-QAM signal at a third output level,
The transmitting device is,
Outputting at least two of the first 16-QAM signal, the second 16-QAM signal, and the third 16-QAM signal to the LoC area,
At least two of the first 16-QAM signal, the second 16-QAM signal, and the third 16-QAM signal,
Characterized in that it is modulated into the high-order-QAM signal according to the space vector defect in the LoC area,
MIMO communication system. Transmitting a plurality of segmented beams; and
Receiving a higher order QAM signal,
The step of transmitting the plurality of segmented beams includes:
generating different types of segmented beams;
Outputting the plurality of segmented beams to an LoC area;
Characterized in that it includes the step of generating a high-order QAM signal as the plurality of segmented beams are spatial vector combined in the LoC area,
MIMO communication method. According to clause 11,
The step of transmitting the plurality of segmented beams includes:
Characterized in controlling the LoC area where the segmented beam is output by changing at least one of the phase, amplitude, and direction of the transmitted segmented beam,
MIMO communication method.