WO2015008801A1

WO2015008801A1 - Dual polarisation transmission system, dual polarisation receiving device, dual polarisation transmitting device, method for controlling plane of polarisation, and program for controlling plane of polarisation

Info

Publication number: WO2015008801A1
Application number: PCT/JP2014/068943
Authority: WO
Inventors: 隼悟新井
Original assignee: 日本電気株式会社
Priority date: 2013-07-16
Filing date: 2014-07-16
Publication date: 2015-01-22
Also published as: JPWO2015008801A1

Abstract

[Problem] To provide a dual polarisation transmission system, etc., which, without physical rotation of an antenna, prevent extreme deterioration of a transmission characteristic of either V polarisation or H polarisation. [Solution] A receiver (3) in a dual polarisation transmission system comprises: an electric field difference detection unit (4) which detects whether a difference between the electric field strengths of each of V polarised side and H polarised side signals received by an antenna (3a) is equal to or greater than a threshold value applied in advance; an angle of rotation calculation unit (5) which indicates to each of a transmitter and the receiver the angles of rotation that should be applied to each of the V polarised side and H polarised side signals if the difference between the electric field strengths of each signal is equal to or greater than the threshold value; an angle inverse operation unit (6) which, in accordance with the indication, performs an operation on each of the V polarised side and H polarised side signals which corresponds to causing the antenna to rotate only by the angles of rotation; and a demodulator (7) which demodulates and outputs each signal that has been output from the angle inversion operation unit.

Description

Dual polarization transmission system, dual polarization receiver, dual polarization transmitter, polarization plane control method, and polarization plane control program

The present invention relates to a dual-polarization transmission system, a dual-polarization receiver, a dual-polarization transmitter, a polarization plane control method, and a polarization plane control program, and in particular, V polarization and H polarization without physical rotation of an antenna. The present invention relates to a dual-polarized wave transmission device and the like that can prevent extreme deterioration of transmission characteristics of one of them.

Microwave communication is mainly used in satellite communication and mobile communication (such as mobile phones and wireless LANs), but in recent years, large-capacity data communication networks constructed especially with optical fibers have become large-scale. It is attracting attention in the use of backup that recovers in the event of a disaster. Non-Patent Document 1 describes a microwave communication system that the applicant has released for such applications.

∙ A particular problem in microwave communication is the difference in attenuation between V (vertical) polarization and H (horizontal) polarization during rain. Non-Patent Document 2 describes attenuation that may occur during rainfall in the millimeter to microwave frequency band. According to this, when there is 100 mm / h rainfall in the 20 to 50 GHz frequency band, A difference in attenuation of about 3 dB / km or more can occur between the V polarization and the H polarization.

If this occurs, the transmission quality will be extremely deteriorated on one of V polarization and H polarization. In particular, in a dual-polarization transmission device that transmits different information on V-polarized light and H-polarized light, if there is an extreme deterioration in transmission characteristics, the communication quality on the side where the deterioration occurs is greatly reduced. A decrease (such as a decrease in transmission speed or disconnection of the line) occurs.

As a technology that can cope with this problem, Patent Document 1 discloses that both of the antennas on the transmitting side and the receiving side are installed when an extreme deterioration in transmission quality is detected on one of the V polarization and the H polarization. A dual polarization transmission device that transmits and receives by rotating 45 degrees is described.

As another related technology, Patent Document 2 describes an inter-polarization interference compensation device that controls phase according to a phase difference and a phase noise component to reduce phase noise. Patent Document 3 describes an inter-polarization interference compensator that uses an infinite phase shifter to reduce phase noise. Patent Document 4 describes an inter-polarization interference compensation device that can compensate for inter-polarization interference even when V polarization and H polarization are asynchronous. Patent Document 5 describes an inter-polarization interference compensator using a local oscillator provided with a PLL circuit, and a transmission device using the same.

JP 2000-151543 A Republished patent WO2007 / 046427 JP 2002-158630 A Japanese Patent Laid-Open No. 07-177123 Republished patent WO2010 / 087338

Although the technique described in Patent Document 1 is useful in terms of preventing extreme deterioration of transmission characteristics of one of V polarization and H polarization, the antenna is “physically rotated 45 degrees”. It is necessary. Especially in recent transmitters and receivers that have been reduced in size and weight and price, it is extremely difficult to physically rotate the antenna, so this technology is not practically usable.

In addition, since the techniques described in Patent Documents 2 to 5 are all related to the “polarization interference compensation device”, they are not applicable techniques for rotating the antenna. Therefore, the effect of preventing the extreme deterioration in transmission characteristics of one of the V polarization and the H polarization cannot be obtained from these techniques. Non-patent documents 1 and 2 also do not describe a technique that can solve this problem.

The object of the present invention is to prevent the deterioration of the extreme transmission characteristics of one of the V-polarized wave and H-polarized wave without physical rotation of the antenna, and to obtain good communication characteristics. A dual polarization transmission system, a dual polarization transmitter, a dual polarization receiver, a polarization plane control method, and a polarization plane control program.

In order to achieve the above object, the dual-polarization transmission system according to the present invention includes antennas capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization, respectively. A dual-polarization transmission system comprising a transmitter and a receiver, wherein the receiver is equal to or greater than a predetermined threshold value for the electric field strength of each signal on the V-polarization side and the H-polarization side received by the antenna. An electric field difference detection unit that detects whether or not there is a difference, and a rotation angle that should be given to each signal when there is a difference greater than or equal to a threshold in the electric field strength of each signal on the V polarization side and the H polarization side For each of the signals on the V-polarization side and the H-polarization side. The angle reverse calculation unit and the signals output from the angle reverse calculation unit are restored. Further comprising a demodulator that is output, characterized by.

In order to achieve the above object, both polarization receiving apparatuses according to the present invention include an antenna capable of receiving radio waves carrying different information on V (vertical) polarization and H (horizontal) polarization. Electric field difference detection that detects whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strength of each of the signals on the V polarization side and the H polarization side received by the antenna. A rotation angle calculation unit that indicates a rotation angle to be given to each signal when there is a difference equal to or greater than a threshold value in the electric field strength of each signal on the V polarization side and the H polarization side, and according to the instruction An angle inverse calculation unit that performs an operation corresponding to rotating the antenna in a direction opposite to the transmitter by the rotation angle for each signal on the V polarization side and the H polarization side; And a demodulator that demodulates and outputs each signal output from .

In order to achieve the above object, a dual-polarization transmission device according to the present invention includes an antenna capable of transmitting radio waves carrying different information on V (vertical) polarization and H (horizontal) polarization, respectively. A dual-polarization transmitter, a modulator that applies different modulation to the signals on the V-polarization side and the H-polarization side, an angle control unit that receives an instruction about a rotation angle from the receiver side, and a reception In response to an instruction from the machine side, an operation equivalent to rotating the antenna in the direction opposite to the receiver by the rotation angle is performed on each of the signals on the V polarization side and the H polarization side to the antenna. And an angle calculation unit for feeding.

In order to achieve the above object, a polarization plane control method according to the present invention includes transmissions each having an antenna capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization. In a dual polarization transmission system consisting of a transmitter and a receiver, the modulator of the transmitter applies different modulation to the signals on the V polarization side and the H polarization side and sends them to the antenna of the transmitter. Whether or not the electric field difference detection unit of the receiver has a difference equal to or greater than a predetermined threshold in the electric field strength of each signal on the V polarization side and the H polarization side received from the transmitter. When there is a difference greater than or equal to the threshold in the electric field strength of each signal on the V polarization side and the H polarization side, the rotation angle calculation unit of the receiver determines the rotation angle to be given to each signal. Instruct each of the transmitter and the receiver, and in response to the instruction, the inverse angle calculation unit of the receiver An operation equivalent to rotating the antenna by the rotation angle is performed on each of the signals on the V polarization side and the H polarization side, and the demodulator of the receiver demodulates each signal output from the angle inverse operation unit. Output.

In order to achieve the above object, a polarization plane control program according to the present invention includes both antennas capable of receiving radio waves carrying different information on V (vertical) polarization and H (horizontal) polarization. In the polarization receiving device, the processor included in both polarization receiving devices has a difference equal to or greater than a predetermined threshold in the electric field strength of each signal on the V polarization side and the H polarization side received by the antenna. A procedure for detecting whether or not there is a difference greater than or equal to a threshold in the electric field strength of each of the signals on the V polarization side and the H polarization side, and instructions In response to this, a demodulation corresponding to the rotation of the antenna in the direction opposite to the transmitter by the rotation angle is performed on each of the signals on the V polarization side and the H polarization side to demodulate these signals. Executing a procedure for outputting to a container. In order to achieve the above object, another polarization plane control program according to the present invention provides an antenna capable of transmitting radio waves carrying different information on V (vertical) polarization and H (horizontal) polarization, respectively. In accordance with the procedure for receiving an instruction about the rotation angle from the receiver side, and the instruction from the receiver side, the antenna included in the dual polarization transmission apparatus is provided with the antenna for the rotation angle. The present invention is characterized in that a procedure equivalent to rotating in the direction opposite to that of the receiver is performed on each of the signals on the V polarization side and the H polarization side and sent to the antenna.

As described above, the present invention detects the difference in electric field strength between the V polarization side and the H polarization side, and performs an operation corresponding to rotating the antenna accordingly on each of the V polarization side and the H polarization side. The same effect can be obtained without actually rotating the antenna. As a result, it is possible to prevent the deterioration of the extreme transmission characteristics of one of the V-polarized wave and the H-polarized wave and obtain good communication characteristics without physical rotation of the antenna. The dual polarization transmission system, the dual polarization transmission device, the dual polarization reception device, the polarization plane control method, and the polarization plane control program having excellent characteristics can be provided.

It is explanatory drawing shown about the structure of the dual polarization transmission system which concerns on the basic form of this invention. It is explanatory drawing shown about the structure of the dual polarization transmission system which concerns on embodiment of this invention. 3 is a flowchart illustrating operations of an electric field difference detection unit, a rotation angle calculation unit, and an angle control unit illustrated in FIG. 2.

(Basic form)
Hereinafter, the basic configuration of the present invention will be described with reference to FIG.
The dual polarization transmission system 1 according to the basic configuration includes a transmitter 2 and a receiver each having an antenna capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization. 3 is a dual polarization transmission system. The receiver 3 includes an electric field difference detection unit 4 that detects whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strengths of the signals on the V polarization side and the H polarization side received by the antenna 3a. Rotation angle calculation that indicates to each of the transmitter and receiver the rotation angle to be given to each signal when the electric field strength of each signal on the V polarization side and the H polarization side has a difference greater than a threshold value Unit 5, an angle reverse calculation unit 6 that performs an operation corresponding to rotating the antenna by the rotation angle in response to an instruction, on each signal on the V polarization side and the H polarization side, and an angle reverse calculation unit And a demodulator 7 that demodulates and outputs each signal output from the.
A more detailed configuration of each means will be described as the next embodiment.

(Embodiment)
Subsequently, the configuration of the embodiment of the present invention will be described with reference to FIG.
The dual-polarization transmission system 100 according to the present embodiment includes

transmitters

11 and 21 that can transmit and receive different information on V (vertical) polarization and H (horizontal) polarization, respectively. 10 is a dual-polarization transmission system including a receiver 10 and a receiver 20. Here, the receiver 20 detects whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strengths of the signals on the V polarization side and the H polarization side received by the antenna. And a rotation angle that indicates to each of the transmitter and the receiver the rotation angle to be given to each signal when there is a difference greater than or equal to the threshold in the electric field strength of each signal on the V polarization side and the H polarization side A calculation unit 30; an angle reverse calculation unit 24 that performs an operation corresponding to rotating the antenna by a rotation angle in response to an instruction; Demodulator 26a-b for demodulating and outputting each signal output from the unit.

The transmitter 10 also includes modulators 12a to 12b that apply different modulation to the signals on the V polarization side and the H polarization side, and rotations that are instructed by the rotation angle calculation unit of the receiver in response to the instructions. An angle calculation unit 13 is provided that performs a calculation corresponding to rotating the antenna in the direction opposite to the receiver by the angle, on each of the signals on the V polarization side and the H polarization side and sends the signals to the antenna.

Here, the angle calculation unit 13 of the transmitter 10 branches the signals on the V polarization side and the H polarization side, respectively, to θ, assuming that the rotation angle instructed by the rotation angle calculation unit of the receiver is θ. a plurality of multipliers 13a to 13d for multiplying cos θ and sin θ, an angle control unit 13g for controlling each multiplier in accordance with an instruction from the rotation angle calculation unit of the receiver, and an output signal from each multiplier is added or subtracted. And an adder / subtracter (adder 13e, subtractor 13f) for obtaining a signal corresponding to the case where the antenna is rotated in the opposite direction to the receiver for each of the V polarization side and the H polarization side. .

Then, the angle inverse calculation unit 24 of the receiver 20 branches the signals on the V polarization side and the H polarization side received by the antenna, assuming that the rotation angle designated by the rotation angle calculation unit is θ. A plurality of multipliers 24a to 24d that respectively multiply cos θ and sin θ, an angle control unit 24g that controls each multiplier according to an instruction from the rotation angle calculation unit, and an output signal from each multiplier And an adder / subtracter (adder 24f, subtractor 24e) for obtaining signals corresponding to the case where the antenna is rotated for each of the V polarization side and the H polarization side.

By providing the above configuration, the dual-polarization transmission system 100 prevents extreme deterioration in transmission characteristics of one of the V-polarized wave and the H-polarized wave without physical rotation of the antenna. It will be possible.
Hereinafter, this will be described in more detail.

FIG. 2 is an explanatory diagram showing the configuration of the dual polarization transmission system 100 according to the embodiment of the present invention. The dual polarization transmission system 100 includes a transmitter 10 including a transmitting antenna 11 and a receiver 20 including a receiving antenna 21. The transmission-side antenna 11 and the reception-side antenna 21 can perform transmission / reception by carrying different information on the V polarization and the H polarization.

The transmitter 10 receives a baseband signal on the V polarization side and a baseband signal on the H polarization side, which are given different modulations by

modulators

12a and 12b (MOD: modulator), which will be described later. The angle calculation unit 13 gives a calculation corresponding to rotating the antenna angle by θ. Then, each signal is multiplied by the frequency oscillated by the local oscillator 14 by the multipliers 15 a and 15 b, frequency-converted, sent to the transmitting antenna 11, and transmitted to the receiver 20.

In the receiver 20, the signals on the V polarization side and the H polarization side received by the receiving antenna 21 are frequency-converted by multiplying the frequencies oscillated by the local oscillator 22 by the multipliers 23 a and 23 b. The angle inverse calculation unit 24 described later gives a calculation corresponding to rotating the antenna angle by −θ. Thereafter, the signals are demodulated by demodulators 26a and 26b (DEM: demodulator) through processing by an electric field difference detection unit 25 and a rotation angle calculation unit 30 described later.

At this time, the signals demodulated on the V-polarization side and the H-polarization side are respectively added to the compensation signals generated by the inter-polarization

interference compensation units

27a and 27b (XPIC: CrossＩＣPolarization Interference Canceller) by the

adders

28a and 28b. Is added. From the output signals from the

adders

28a and 28b, phase noise is detected by

phase noise detectors

29a and 29b (DET: 位相 detector), and the detection result is fed back to the

inter-polarization interference compensators

27a and 27b.

Since the

inter-polarization interference compensators

27a and 27b are not within the scope of the present invention as described above, any known technique can be used.

The electric field difference detection unit 25 includes electric field

intensity calculation units

25a and 25b that detect electric field intensities of signals on the V polarization side and the H polarization side, and the V polarization side and the H polarization side detected by each of them. And a difference detector 25c for detecting the difference in the electric field strength. The rotation angle calculation unit 30 calculates the rotation angle θ from the difference in electric field intensity detected by the difference detector 25c. The rotation angle θ calculated by the rotation angle calculation unit 30 is fed back to the angle calculation unit 24 and the angle calculation unit 13 on the transmitter 10 side.

The angle calculation unit 13 on the transmitter 10 side splits the V polarization side signal into two and multiplies them by cos θ and sin θ, and the H polarization side signal splits into two. A

multiplier

13c and 13d for multiplying each of them by cos θ and sin θ; an adder 13e for adding the outputs of the

multipliers

13a and 13d; and a subtractor 13f for subtracting the output of the multiplier 13b from the output of the multiplier 13c; The angle control unit 13g controls the multipliers 13a to 13d according to the rotation angle θ received from the rotation angle calculation unit 30.

That is, the calculation performed here is equivalent to rotating the antenna angle by θ as shown in the following equation 1, where A and B are the signal intensities on the V polarization side and the H polarization side, respectively. It is an operation.

The inverse angle calculation unit 24 on the receiver 20 side splits the V polarization side signal into two and multiplies them by cos θ and sin θ, and the H polarization side signal splits into two. Multipliers 24c and 24d for multiplying each of them by cos θ and sin θ, a subtractor 24e for subtracting the output of the multiplier 24d from the output of the multiplier 24a, and an adder 24f for adding the outputs of the multipliers 24b and 24c And an angle control unit 24g for controlling the multipliers 24a to 24d in accordance with the rotation angle θ received from the rotation angle calculation unit 30.

That is, the calculation performed here is a calculation equivalent to rotating the antenna angle by −θ, as shown by the following formula 2, and thereby returning to the original signal strengths A and B.

FIG. 3 is a flowchart showing operations of the electric field difference detection unit 25, the rotation angle calculation unit 30, and the angle control units 13g and 24g shown in FIG. When the receiver 20 receives a radio wave from the transmitter 10, the electric field difference detection unit 25 first detects the electric field strengths of the signals on the V polarization side and the H polarization side by the electric field

strength calculation units

25a and 25b ( Step S101). Subsequently, the difference detector 25c detects the difference between the electric field intensities of the signals on the V polarization side and the H polarization side detected by the electric field

intensity calculation units

25a and 25b (step S102).

In response to this, the rotation angle calculation unit 30 determines whether or not the detected difference is equal to or greater than the given threshold value (step S103). If not greater than the threshold value, the process returns to step S101 to continue the process. If it is equal to or greater than the threshold value, a fixed value is added to the rotation angle θ (step S104), and the rotation angle θ is set for the angle controllers 13g and 24g (step S105), and the process returns to step S101.

More specifically, for example, “3 dB” is appropriate as the “threshold value” in step S103. The initial value of the rotation angle θ is 0, and the “constant value” in step S104 can be arbitrarily set by those skilled in the art as long as the value does not affect the conduction of the communication signal. It is.

The angle controllers 13g and 24g that have received the setting of the rotation angle set the rotation angles for the multipliers 13a to 13d and the multipliers 24a to 24d, respectively, and control those multipliers (step S106).

In the present embodiment, the transmitter and the receiver are described as being separate from each other. However, in most actual devices, the transmitter and the receiver are provided in the same device. Therefore, the rotation angle θ set by the reception-side rotation angle calculation unit 30 is transmitted to the transmission-side angle control unit 13g via wireless communication in the reverse direction.

(Overall operation and effect of the embodiment)
Next, the overall operation of the above embodiment will be described.
The polarization plane control method according to the present embodiment includes a transmitter and a receiver each having an antenna capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization. The transmitter's modulator applies different modulation to the signals on the V polarization side and the H polarization side and sends them to the antenna of the transmitter to transmit them, The electric field difference detection unit of the receiver detects whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strength of each signal on the V polarization side and the H polarization side received from the transmitter (see FIG. 3. Steps S101 to 103) When there is a difference equal to or greater than the threshold value between the electric field strengths of the signals on the V polarization side and the H polarization side, the rotation angle calculation unit of the receiver should give to each signal. Instruct the rotation angle to each of the transmitter and the receiver (FIG. 3, step S104), As shown, the inverse angle calculation unit of the receiver performs an operation corresponding to rotating the antenna by the rotation angle for each signal on the V polarization side and the H polarization side (FIG. 3, step S105). ), The demodulator of the receiver demodulates and outputs each signal output from the angle inverse operation unit.

Further, in response to the instruction, the transmitter angle calculation unit performs a calculation corresponding to rotating the antenna in the direction opposite to the receiver by the rotation angle specified by the rotation angle calculation unit of the receiver. This is performed for each signal on the V polarization side and the H polarization side output from the modulator of FIG.

Here, each of the above-described operation steps may be programmed to be executable by a computer, and may be executed by a processor included in the transmitter 10 and the receiver 20 that directly execute the respective steps. The program may be recorded on a non-temporary recording medium, such as a DVD, a CD, or a flash memory. In this case, the program is read from the recording medium by a computer and executed.
By this operation, this embodiment has the following effects.

According to the present embodiment, the effect equivalent to the technology of the technique described in Patent Document 1 is achieved without physically rotating the antenna, that is, the extreme transmission characteristics of one of V polarization and H polarization. An effect of preventing deterioration can be obtained. This means that it is not necessary to make fine adjustments such as the position and angle of the antenna when it is installed, which is particularly useful for recent transceivers that have become smaller, lighter, and less expensive. is there.

The present invention has been described with reference to the specific embodiments shown in the drawings. However, the present invention is not limited to the embodiments shown in the drawings, and any known hitherto provided that the effects of the present invention are achieved. Even if it is a structure, it is employable.

The summary of the new technical contents of the above-described embodiment is summarized as follows. In addition, although part or all of the said embodiment is summarized as follows as a novel technique, this invention is not necessarily limited to this.

(Supplementary note 1) A dual-polarization transmission system comprising a transmitter and a receiver each having an antenna capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization. There,
The receiver is
An electric field difference detection unit for detecting whether or not there is a difference equal to or greater than a predetermined threshold in the electric field intensity of each of the signals on the V polarization side and the H polarization side received by the antenna;
When there is a difference equal to or greater than the threshold value in the electric field strength of each signal on the V polarization side and the H polarization side, the rotation angle to be given to each signal is instructed to each of the transmitter and the receiver. A rotation angle calculation unit;
In response to the instruction, an angle inverse calculation unit that performs an operation corresponding to rotating the antenna by the rotation angle for each of the signals on the V polarization side and the H polarization side;
A dual-polarization transmission system comprising: a demodulator that demodulates and outputs each signal output from the angle inverse calculation unit.

(Appendix 2) The transmitter is
A modulator that applies different modulation to the signals on the V polarization side and the H polarization side;
In accordance with the instruction, an operation equivalent to rotating the antenna in a direction opposite to the receiver by the rotation angle specified by the rotation angle calculation unit of the receiver is performed on the V polarization side. The dual-polarization transmission system according to appendix 1, further comprising: an angle calculation unit that performs an operation on each signal on the H polarization side and sends the signal to the antenna.

(Supplementary Note 3) The angle calculation unit of the transmitter is
Assuming that the rotation angle instructed from the rotation angle calculation unit of the receiver is θ, a plurality of multiplications for branching the signals on the V polarization side and the H polarization side and multiplying them respectively by cos θ and sin θ And
An angle control unit that controls each of the multipliers according to an instruction from the rotation angle calculation unit of the receiver;
Output signals from the multipliers are added and subtracted to obtain signals corresponding to the case where the antenna is rotated in the opposite direction to the receiver for each of the V polarization side and the H polarization side. The dual polarization transmission system according to appendix 2, characterized by comprising an adder / subtractor.

(Additional remark 4) The said angle reverse calculation part of the said receiver is,
When the rotation angle instructed from the rotation angle calculation unit is θ, a plurality of signals on the V polarization side and the H polarization side received by the antenna are branched and multiplied by cos θ and sin θ, respectively. A multiplier of
An angle control unit that controls each of the multipliers according to an instruction from the rotation angle calculation unit;
An adder / subtractor for adding and subtracting output signals from the multipliers to obtain signals corresponding to the rotation of the antenna for each of the V polarization side and the H polarization side; The dual polarization transmission system according to Supplementary Note 3, which is a feature.

(Supplementary Note 5) A dual-polarization receiving device including an antenna capable of receiving radio waves each carrying different information on V (vertical) polarization and H (horizontal) polarization,
An electric field difference detection unit for detecting whether or not there is a difference equal to or greater than a predetermined threshold in the electric field intensity of each of the signals on the V polarization side and the H polarization side received by the antenna;
A rotation angle calculation unit for instructing a rotation angle to be given to each signal when there is a difference equal to or greater than the threshold value in the electric field intensity of each signal on the V polarization side and the H polarization side;
In response to the instruction, an inverse angle calculation is performed for each of the signals on the V polarization side and the H polarization side corresponding to rotating the antenna in the direction opposite to the transmitter by the rotation angle. And
A dual-polarization receiving apparatus comprising: a demodulator that demodulates and outputs each signal output from the angle inverse calculation unit.

(Additional remark 6) The said angle reverse calculating part is
When the rotation angle instructed from the rotation angle calculation unit is θ, a plurality of signals on the V polarization side and the H polarization side received by the antenna are branched and multiplied by cos θ and sin θ, respectively. A multiplier of
An angle control unit that controls each of the multipliers according to an instruction from the rotation angle calculation unit;
An adder / subtractor for adding and subtracting output signals from the multipliers to obtain signals corresponding to the rotation of the antenna for each of the V polarization side and the H polarization side; The dual-polarized wave receiving device according to appendix 5, which is characterized in that.

(Supplementary note 7) A dual-polarized wave transmission device including an antenna capable of transmitting radio waves carrying different information on V (vertical) polarization and H (horizontal) polarization,
A modulator that applies different modulation to each of the signals on the V polarization side and the H polarization side;
An angle control unit that receives an instruction about the rotation angle from the receiver side;
In accordance with the instruction from the receiver side, an operation equivalent to rotating the antenna in the direction opposite to the receiver by the rotation angle is performed on each signal on the V polarization side and the H polarization side. A dual-polarized wave transmission device comprising: an angle calculation unit that performs the operation on the antenna and sends it to the antenna.

(Supplementary Note 8) The angle calculation unit is
When the rotation angle instructed from the receiver is θ, a plurality of multipliers for branching the signals on the V polarization side and the H polarization side and multiplying them respectively by cos θ and sin θ,
An angle control unit for controlling each of the multipliers according to an instruction from the receiver;
Output signals from the multipliers are added and subtracted to obtain signals corresponding to the case where the antenna is rotated in the opposite direction to the receiver for each of the V polarization side and the H polarization side. The dual-polarized wave transmission device according to appendix 7, characterized by comprising an adder / subtractor.

(Supplementary note 9) A dual-polarization transmission system comprising a transmitter and a receiver each having an antenna capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization. There,
The transmitter modulator gives different modulation to the signals on the V polarization side and the H polarization side and sends them to the antenna of the transmitter to transmit them,
The electric field difference detection unit of the receiver detects whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strength of each signal on the V polarization side and the H polarization side received from the transmitter. ,
When there is a difference equal to or greater than the threshold value in the electric field strength of each of the signals on the V polarization side and the H polarization side, the rotation angle calculation unit of the receiver determines the rotation angle to be given to each signal. Instruct each transmitter and receiver,
In response to the instruction, the inverse angle calculation unit of the receiver performs an operation corresponding to rotating the antenna by the rotation angle for each signal on the V polarization side and the H polarization side,
A polarization plane control method, wherein a demodulator of the receiver demodulates and outputs each signal output from the angle inverse calculation unit.

(Supplementary Note 10) In response to the instruction, the angle calculation unit of the transmitter rotates the antenna in the direction opposite to the receiver by the rotation angle specified by the rotation angle calculation unit of the receiver. (Supplementary note 9) characterized in that an operation corresponding to the operation is performed on each signal on the V polarization side and H polarization side output from the modulator of the transmitter and then sent to the antenna. The polarization plane control method described.

(Additional remark 11) In both polarization receiving apparatus provided with the antenna which can receive the electric wave which put different information on V (vertical) polarization and H (horizontal) polarization, respectively,
In the processor provided in the both polarization receiving device,
A procedure for detecting whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strength of each of the signals on the V polarization side and the H polarization side received by the antenna;
A procedure for instructing a rotation angle to be given to each signal when there is a difference equal to or greater than the threshold value in the electric field intensity of each signal on the V polarization side and the H polarization side;
In accordance with the instructions, the operation corresponding to rotating the antenna in the direction opposite to the transmitter by the rotation angle is performed on the signals on the V polarization side and the H polarization side, respectively. Output to a demodulator that demodulates the signal
A polarization plane control program characterized in that is executed.

(Additional remark 12) In both polarization transmission equipment provided with the antenna which can transmit the electric wave which carried different information on V (vertical) polarization and H (horizontal) polarization, respectively,
In the processor included in the both polarization transmitters,
Procedure to receive instructions on the rotation angle from the receiver side,
In accordance with the instruction from the receiver side, an operation equivalent to rotating the antenna in the direction opposite to the receiver by the rotation angle is performed on each of the V polarization side and the H polarization side. A polarization plane control program characterized by causing a procedure to be performed on a signal and sent to the antenna.

This application claims priority based on Japanese Patent Application No. 2013-147237 filed on July 16, 2013, the entire disclosure of which is incorporated herein.

The present invention can be widely applied to wireless communication using millimeter waves or microwaves. It is particularly useful in applications such as mobile communication and satellite communication.

DESCRIPTION OF SYMBOLS 1,100 Both-

polarization transmission system

2,10

Transmitter

3,20

Receiver 3a Antenna

4,25 Electric field difference detection part 5,30 Rotation

angle calculation part

6,24 Angle

reverse calculation part

7,26a, 26b Demodulator 11

Transmission Side antenna

12a, 12b Modulator 13

Angle calculator

13a, 13b, 13c, 13d, 15a, 15b, 23a, 23b, 24a, 24b, 24c,

24d Multiplier

13e, 24f, 28a, 28b Adder 13f, 24e Subtractor 13g, 24g

Angle control unit

14, 22 Local oscillator 21

Reception side antenna

25a, 25b Electric field intensity calculation unit

25c Difference detector

27a, 27b Inter-polarization

interference compensation unit

29a, 29b Phase noise detector

Claims

A dual-polarization transmission system comprising a transmitter and a receiver each having an antenna capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization,
The receiver is
An electric field difference detection unit for detecting whether or not there is a difference equal to or greater than a predetermined threshold in the electric field intensity of each of the signals on the V polarization side and the H polarization side received by the antenna;
When there is a difference equal to or greater than the threshold value in the electric field strength of each signal on the V polarization side and the H polarization side, the rotation angle to be given to each signal is instructed to each of the transmitter and the receiver. A rotation angle calculation unit;
In response to the instruction, an angle inverse calculation unit that performs an operation corresponding to rotating the antenna by the rotation angle for each of the signals on the V polarization side and the H polarization side;
A dual-polarization transmission system comprising: a demodulator that demodulates and outputs each signal output from the angle inverse calculation unit.
The transmitter is
A modulator that applies different modulation to the signals on the V polarization side and the H polarization side;
In accordance with the instruction, an operation equivalent to rotating the antenna in a direction opposite to the receiver by the rotation angle specified by the rotation angle calculation unit of the receiver is performed on the V polarization side. The dual-polarization transmission system according to claim 1, further comprising: an angle calculation unit that performs each signal on the H polarization side and sends the signal to the antenna.
The angle calculator of the transmitter is
Assuming that the rotation angle instructed from the rotation angle calculation unit of the receiver is θ, a plurality of multiplications for branching the signals on the V polarization side and the H polarization side and multiplying them respectively by cos θ and sin θ And
An angle control unit that controls each of the multipliers according to an instruction from the rotation angle calculation unit of the receiver;
Output signals from the multipliers are added and subtracted to obtain signals corresponding to the case where the antenna is rotated in the opposite direction to the receiver for each of the V polarization side and the H polarization side. The dual polarization transmission system according to claim 2, further comprising an adder / subtractor.
The angle inverse calculation unit of the receiver is
When the rotation angle instructed from the rotation angle calculation unit is θ, a plurality of signals on the V polarization side and the H polarization side received by the antenna are branched and multiplied by cos θ and sin θ, respectively. A multiplier of
An angle control unit that controls each of the multipliers according to an instruction from the rotation angle calculation unit;
An adder / subtractor for adding and subtracting output signals from the multipliers to obtain signals corresponding to the rotation of the antenna for each of the V polarization side and the H polarization side; The dual polarization transmission system according to claim 3, wherein
A dual-polarized wave receiving apparatus including an antenna capable of receiving radio waves each carrying different information on V (vertical) polarization and H (horizontal) polarization,
An electric field difference detection unit for detecting whether or not there is a difference equal to or greater than a predetermined threshold in the electric field intensity of each of the signals on the V polarization side and the H polarization side received by the antenna;
A rotation angle calculation unit for instructing a rotation angle to be given to each signal when there is a difference equal to or greater than the threshold value in the electric field intensity of each signal on the V polarization side and the H polarization side;
In response to the instruction, an inverse angle calculation is performed for each of the signals on the V polarization side and the H polarization side corresponding to rotating the antenna in the direction opposite to the transmitter by the rotation angle. And
A dual-polarization receiving apparatus comprising: a demodulator that demodulates and outputs each signal output from the angle inverse calculation unit.
A dual-polarization transmission device including an antenna capable of transmitting radio waves carrying different information on V (vertical) polarization and H (horizontal) polarization,
A modulator that applies different modulation to each of the signals on the V polarization side and the H polarization side;
An angle control unit that receives an instruction about the rotation angle from the receiver side;
In accordance with the instruction from the receiver side, an operation equivalent to rotating the antenna in the direction opposite to the receiver by the rotation angle is performed on each signal on the V polarization side and the H polarization side. A dual-polarized wave transmission device comprising: an angle calculation unit that performs the operation on the antenna and sends it to the antenna.
In a dual-polarization transmission system comprising a transmitter and a receiver each having an antenna capable of transmitting and receiving different information on V (vertical) polarization and H (horizontal) polarization,
The transmitter modulator gives different modulation to the signals on the V polarization side and the H polarization side and sends them to the antenna of the transmitter to transmit them,
The electric field difference detection unit of the receiver detects whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strength of each signal on the V polarization side and the H polarization side received from the transmitter. ,
When there is a difference equal to or greater than the threshold value in the electric field strength of each of the signals on the V polarization side and the H polarization side, the rotation angle calculation unit of the receiver determines the rotation angle to be given to each signal. Instruct each transmitter and receiver,
In response to the instruction, the inverse angle calculation unit of the receiver performs an operation corresponding to rotating the antenna by the rotation angle for each signal on the V polarization side and the H polarization side,
A polarization plane control method, wherein a demodulator of the receiver demodulates and outputs each signal output from the angle inverse calculation unit.
In accordance with the instruction, the angle calculation unit of the transmitter corresponds to rotating the antenna in the direction opposite to the receiver by the rotation angle specified by the rotation angle calculation unit of the receiver. 8. The bias according to claim 7, wherein the calculation is performed on each of the signals on the V polarization side and the H polarization side output from the modulator of the transmitter and then sent to the antenna. 9. Wavefront control method.
In a dual polarization receiving device having an antenna capable of receiving radio waves carrying different information on V (vertical) polarization and H (horizontal) polarization,
In the processor provided in the both polarization receiving device,
A procedure for detecting whether or not there is a difference equal to or greater than a predetermined threshold in the electric field strength of each of the signals on the V polarization side and the H polarization side received by the antenna;
A procedure for instructing a rotation angle to be given to each signal when there is a difference equal to or greater than the threshold value in the electric field intensity of each signal on the V polarization side and the H polarization side;
In accordance with the instructions, the operation corresponding to rotating the antenna in the direction opposite to the transmitter by the rotation angle is performed on the signals on the V polarization side and the H polarization side, respectively. Output to a demodulator that demodulates the signal
A polarization plane control program characterized in that is executed.
In a dual polarization transmission device including an antenna capable of transmitting radio waves each carrying different information on V (vertical) polarization and H (horizontal) polarization,
In the processor included in the both polarization transmitters,
Procedure to receive instructions on the rotation angle from the receiver side,
In accordance with the instruction from the receiver side, an operation equivalent to rotating the antenna in the direction opposite to the receiver by the rotation angle is performed on each of the V polarization side and the H polarization side. A polarization plane control program characterized by causing a procedure to be performed on a signal and sent to the antenna.