WO2015096161A1

WO2015096161A1 - Antenna array, signal mapping method and base station

Info

Publication number: WO2015096161A1
Application number: PCT/CN2013/090772
Authority: WO
Inventors: 张鹏程
Original assignee: 华为技术有限公司
Priority date: 2013-12-27
Filing date: 2013-12-27
Publication date: 2015-07-02
Also published as: CN103858359A; CN103858359B

Abstract

The present invention relates to the field of communications. Disclosed in an embodiment of the present invention are an antenna array, signal mapping method and base station, effectively improving the performance of an antenna feed system. The antenna array comprises M columns of dual-polarized antennas for transmitting M signals, each column of dual-polarized antennas comprising two ports corresponding to the two directions of polarization; the M columns of dual-polarized antennas are equally divided into a plurality of groups in N consecutive columns, M being a natural number equal to or greater than 2, and N being any natural number ranging from 1 to M/2; two ports of each column of dual-polarized antennas in each odd-numbered group are both coupled to signals in the same phase; two ports of each column of dual-polarized antennas in each even-numbered group are respectively coupled to signals with a phase difference of ±π; alternatively, two ports of each column of dual-polarized antennas in each even-numbered group are both coupled to signals in the same phase; two ports of each column of dual-polarized antennas in each odd-numbered group are respectively coupled to signals with a phase difference of ±π.

Description

Antenna array, signal mapping method and base station

The present invention relates to the field of communications, and in particular, to an antenna array, a method for signal mapping, and a base station. Background technique

In the field of mobile communication technology, the available spectrum resources are limited, and in order to improve the utilization of spectrum resources, multi-antenna technology is introduced.

A multi-antenna antenna system generally consists of a multi-column dual-polarized antenna; in the communication process, signals of multiple logical channels need to be mapped to the ports of the dual-polarized antenna, and signals are transmitted to the receiving end through the dual-polarized antenna. .

In the prior art, the layer mapping method of the logical channel to the dual-polarized antenna adopts Cyclic Delay Diversity (CDD) technology, but the CDD technology inevitably introduces a nulling effect. In order to reduce the occurrence of the nulling effect, Phase Shift Diversity (PSD) is proposed based on CDD. PSD technology prevents strong correlation channels by adding a fixed phase angle to the CDD matrix. Frequency domain nulls that may occur on subcarriers. Although PSD technology can reduce nulls, in the scenario of less carrier resources, the nulling effect is still unavoidable, so that some subcarriers are still in deep fading. If data is allocated on these deep fading subcarriers, it will cause The performance of the antenna feeder system is degraded.

Summary of the invention

Embodiments of the present invention provide an antenna array, a method for signal mapping, and a base station, which effectively improve the performance of the antenna system.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In a first aspect, an antenna array is provided, including: an M-column dual-polarized antenna, configured to transmit M signals, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions, and the M-column The polarized antenna is divided into multiple groups according to consecutive N columns, and M is greater than or equal to a natural number of 2, N is any natural number from 1 to M/2;

The two ports of each column of the dual-polarized antenna of each odd-numbered array are coupled with the same phase signal; the two ports of each of the dual-polarized antennas of each even-array are respectively coupled with phase-phase difference; Γ signal; or

The two ports of each column of the dual-polarized antenna of each even array are coupled with the same phase signal; the two ports of each column of the dual-polarized antenna of each odd array are respectively coupled with signals having a phase difference of ±.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the N is 1 and

The two ports of each odd-numbered dual-polarized antenna are coupled with signals of the same phase; the two ports of each even-numbered dual-polarized antenna are respectively coupled with signals having a phase difference of ± τ; or

The two ports of each even-numbered dual-polarized antenna are coupled with signals of the same phase; the two ports of each of the odd-numbered dual-polarized antennas are respectively coupled with signals having a phase difference of ±τ.

With the first aspect or the first possible implementation of the first aspect, in a second possible implementation manner of the first aspect, the antenna array includes two columns of dual-polarized antennas for transmitting the first signal and Second signal, and,

The first port and the second port of the first column of dual-polarized antennas are coupled to the first signal; the first port of the second column of dual-polarized antennas is coupled to the second signal, and the second port is coupled to weight After the second signal, the weighted second signal is different from the phase of the second signal by ±; τ; or

The first port of the first column of dual-polarized antennas is coupled to the first signal, the second port is coupled to the weighted first signal, and the weighted first signal is out of phase with the first signal a first port and a second port of the second column of dual-polarized antennas are coupled to the second signal.

With the first aspect or the first possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the antenna array includes a four-column dual-polarized antenna, configured to transmit a first signal, a second signal, a third signal, and a fourth signal, and

The first port and the second port of the first column of dual-polarized antennas are coupled to the first Signal

The first port of the second column of dual-polarized antennas is coupled to the second signal, the second port is coupled to the weighted second signal, and the weighted second signal is different from the phase of the second signal ;; Γ;

The first port and the second port of the third column of dual-polarized antennas are coupled to the third signal;

The first port of the fourth column of dual-polarized antennas is coupled to the fourth signal, the second port is coupled to the weighted fourth signal, and the weighted fourth signal is different from the phase of the fourth signal. ;; Γ;

Or,

The first port of the first column of dual-polarized antennas is coupled to the first signal, the second port is coupled to the weighted first signal, and the weighted first signal is out of phase with the first signal ;; Γ;

The first port and the second port of the second column of dual-polarized antennas are coupled to the second signal;

The first port of the third column of dual-polarized antennas is coupled to the third signal, the second port is coupled to the weighted third signal, and the weighted third signal is different from the phase of the third signal ;; Γ;

The first port and the second port of the fourth column of dual-polarized antennas each couple the fourth signal.

With reference to the first aspect, in a fourth possible implementation manner of the first aspect, the antenna array includes a four-column dual-polarized antenna, configured to transmit the first signal, the second signal, the third signal, and the fourth signal, And,

The first port and the second port of the first column of dual-polarized antennas are coupled to the first signal; the first port and the second port of the second column of dual-polarized antennas are coupled to the second signal; The first port of the third column of dual-polarized antennas is coupled to the third signal, the second port is coupled to the weighted third signal, and the weighted third signal is different from the phase of the third signal The first port of the fourth column of dual-polarized antennas is coupled to the fourth signal, and the second port is coupled to the weighted fourth signal, and the weighted The phase of the fourth signal is different from the phase of the fourth signal by _{±; r} ;

Or,

The first port of the first column of dual-polarized antennas is coupled to the first signal, the second port is coupled to the weighted first signal, and the weighted first signal is out of phase with the first signal The first port of the second column of dual-polarized antennas is coupled to the second signal, the second port is coupled to the weighted second signal, and the weighted phase of the second signal and the second signal difference _{±; r;} a first port and a second port of the third column are polarized antenna coupled to the third signal; a first port and a second port of the fourth column are coupled to the dual-polarized antenna The fourth signal is described.

In a second aspect, a signal mapping method is provided for mapping M signals to an M-column dual-polarized antenna of an antenna array, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions. The M-column dual-polarized antenna is divided into a plurality of groups according to consecutive N columns, M is a natural number greater than or equal to 2, and N is any natural number from 1 to M/2;

Mapping each signal to a column of dual-polarized antennas, where

When mapping a signal to each column of dual-polarized antennas of an even array, the signals mapped by the two ports of each column of the dual-polarized antenna of the even array are the same; when mapping the signals to each column of the bipolar of the odd array When the antenna is antennaized, the signals mapped by the two ports of each column of the dual-polarized antenna of the odd array are different by ±; τ; or

When mapping a signal to each column of dual-polarized antennas of an even array, the signals mapped by the two ports of each column of the dual-polarized antenna of the even array are phase-differenced when mapping the signals to each column of the odd-numbered array. In the case of an antenna, the signals mapped by the two ports of each column of the dual-polarized antenna of the odd array are the same.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the Ν is 1, the mapping each signal to a column of dual-polarized antennas, including

When the signal is mapped to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are the same; when the signal is mapped to the odd-numbered dual-polarized antenna, the odd-numbered column is doubled The phase of the signal mapped by the two ports of the polarized antenna is different; Γ; ^ , When the signal is mapped to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are phase-difference. When the signal is mapped to the odd-numbered dual-polarized antenna, the odd-numbered bipolar The signals mapped by the two ports of the antenna are the same.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the antenna array includes two columns of dual-polarized antennas for transmitting the first signal and Second signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes mapping the first signal directly to the first port and the second of the first column of dual-polarized antennas Port; or, mapping the first signal that has undergone the same weighting to the first port and the second port of the first column dual-polarized antenna;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: mapping the second signal directly to the first port of the second column of dual-polarized antennas, and The weighted second signal is mapped to the second port of the second column of dual-polarized antennas, wherein the weighted second signal is different from the phase of the second signal by ± or The second signals that are differently weighted are respectively mapped to the first port and the second port of the second column of dual-polarized antennas, wherein the phases of the different weighted second signals are different.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a third possible implementation manner of the second aspect, the antenna array includes two columns of dual-polarized antennas for transmitting the first signal and Second signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes, directly mapping the first signal to the first port of the first column of dual-polarized antennas, and The weighted first signal is mapped to the second port of the first column of dual-polarized antennas, wherein the weighted first signal is different from the phase of the first signal by ± or The first signal is mapped to the first port and the second port of the first column of dual-polarized antennas, wherein the phase of the different weighted first signals is different;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas, The method includes: directly mapping the second signal to the first port and the second port of the second column of dual-polarized antennas; or mapping the second signal that is subjected to the same weighting to the second column of dual-polarized antennas First port and second port.

With reference to the second aspect or the first possible implementation manner of the second aspect, in a fourth possible implementation manner of the second aspect, the antenna array includes a four-column dual-polarized antenna, configured to transmit the first signal, a second signal, a third signal, and a fourth signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: mapping the first signal directly to the first port and the second of the first column of dual-polarized antennas Port; or, mapping the first signal that has undergone the same weighting to the first port and the second port of the first column dual-polarized antenna;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: mapping the second signal directly to the first port of the second column of dual-polarized antennas, and The weighted second signal is mapped to the second port of the second column of dual-polarized antennas, wherein the weighted second signal is different from the phase of the second signal by ± or The differently weighted second signals are respectively mapped to the first port and the second port of the second column of dual-polarized antennas, wherein the phase of the different weighted second signals is different;

For the third column of dual-polarized antennas, mapping the third signal to the third column of dual-polarized antennas includes: directly mapping the third signal to the first port and the second port of the third column of dual-polarized antennas; or Mapping the third signal that has undergone the same weighting to the first port and the second port of the third column dual-polarized antenna;

For the fourth column of dual-polarized antennas, mapping the fourth signal to the fourth column of dual-polarized antennas includes: mapping the fourth signal directly to the first port of the fourth column of dual-polarized antennas, and the weighted The fourth signal is mapped to the second port of the fourth column of dual-polarized antennas, wherein the weighted fourth signal and the fourth signal are in phase difference

Or π; or, respectively, mapping the fourth signals that are differently weighted to the first port and the second port of the fourth column of dual-polarized antennas, wherein phases of the different weighted fourth signals Differences; Γ.

In combination with the second aspect or the first possible implementation of the second aspect, in the second party In a fifth possible implementation manner, the antenna array includes four columns of dual-polarized antennas for transmitting the first signal, the second signal, the third signal, and the fourth signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: mapping the first signal directly to the first port of the first column of dual-polarized antennas, and the weighted The first signal is mapped to the second port of the first column of dual-polarized antennas, wherein the weighted first signal is different from the phase of the first signal by ±π; or The weighted first signal is mapped to the first port and the second port of the first column dual-polarized antenna, wherein a phase difference of the different weighted first signals is different;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: mapping the second signal directly to the first port and the second port of the second column of dual-polarized antennas; or Mapping the second signal that has undergone the same weighting to the first port and the second port of the second column of dual-polarized antennas;

For the third column of dual-polarized antennas, mapping the third signal to the third column of dual-polarized antennas includes: mapping the third signal directly to the first port of the third column of dual-polarized antennas, and the weighted The third signal is mapped to the second port of the third column dual-polarized antenna, wherein the weighted third signal is different from the phase of the third signal by ±π; or The weighted third signal is mapped to the first port and the second port of the third column of dual-polarized antennas, wherein the different weighted third signal headers are ±±τ;

For the fourth column of dual-polarized antennas, mapping the fourth signal to the fourth column of dual-polarized antennas includes: directly mapping the fourth signal to the first port and the second port of the fourth column of dual-polarized antennas; or The fourth signal that has undergone the same weighting is mapped to the first port and the second port of the fourth column of dual-polarized antennas.

With reference to the second aspect, in a sixth possible implementation manner of the second aspect, the antenna array includes a four-column dual-polarized antenna, configured to transmit the first signal, the second signal, the third signal, and the fourth signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: mapping the first signal directly to the first end of the first column of dual-polarized antennas Port and the second port; or, mapping the first signal that has undergone the same weighting to the first port and the second port of the first column dual-polarized antenna;

For the fourth column of dual-polarized antennas, mapping the fourth signal to the fourth column of dual-polarized antennas includes: mapping the fourth signal directly to the first port of the fourth column of dual-polarized antennas, and the weighted The fourth signal is mapped to the second port of the fourth column of dual-polarized antennas, wherein the weighted fourth signal is different from the phase of the fourth signal by ±π; or The weighted fourth signals are respectively mapped to the first port and the second port of the fourth column of dual-polarized antennas, wherein the phase of the different weighted fourth signals is different;

With reference to the second aspect, in a seventh possible implementation manner of the second aspect, the antenna array includes a four-column dual-polarized antenna, configured to transmit the first signal, the second signal, the third signal, and the fourth signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: mapping the first signal directly to the first port of the first column of dual-polarized antennas, and the weighted The first signal is mapped to the second port of the first column of dual-polarized antennas, wherein the weighted first signal is different from the phase of the first signal by ±π; or The weighted first signal is mapped to the first port and the second port of the first column dual-polarized antenna, where the different weighted first The phase of the signal is different; Γ;

A third aspect provides a base station, including: a baseband processing unit, a radio frequency processing unit, and an antenna array, which are sequentially connected, the antenna array includes M columns of dual-polarized antennas, and each column of dual-polarized antennas includes two polarizations Two ports in the direction, the M-column dual-polarized antenna is divided into multiple groups according to consecutive N columns, M is a natural number greater than or equal to 2, and N is any natural number from 1 to M/2;

The baseband processing unit is configured to generate M signals;

The radio frequency processing unit is configured to map the M signals to an M-column dual-polarized antenna of the antenna array to transmit the M signals through the antenna array; wherein, when mapping the signal to an even array For each column of dual-polarized antennas, the signals mapped by the two ports of each column of the dual-polarized antenna of the even array are the same; when the signal is mapped to each column of the dual-polarized antenna of the odd array, the odd number The phase of the signal mapped by the two ports of each column of the dual-polarized antenna of the group is different by ±; τ; or

When mapping a signal to each column of dual-polarized antennas of an even array, each of the even arrays The signals mapped by the two ports of the column dual-polarized antenna are phase-difference. When the signal is mapped to each column of the dual-polarized antenna of the odd-array array, the signals mapped by the two ports of each column of the dual-polarized antenna of the odd-array array The phase is the same.

With reference to the third aspect, in a first possible implementation manner of the third aspect,

N is 1, and when the signal is mapped to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are the same; when the signal is mapped to the odd-numbered dual-polarized antenna, The phase of the signal mapped by the two ports of the odd-numbered dual-polarized antenna is 目; Γ; or,

When the signal is mapped to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are phase-difference. When the signal is mapped to the odd-numbered dual-polarized antenna, the odd-numbered bipolar The signals mapped by the two ports of the antenna are the same.

With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the signal that is mapped to the same phase on the two ports is the same signal Obtained by weighting or splitting; the signal mapped to the phase difference ± on the two ports is obtained by different weighting or split phase shifting of the same signal.

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the baseband processing unit is further used Yu,

Performing the same weighting or splitting on the first of the plurality of signals to obtain the signal mapped to the same phase on the two ports;

Differently weighting or splitting the second of the plurality of signals to obtain the signal mapped to the two ports with a phase difference of ±; τ.

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in the fourth possible implementation manner of the third aspect, the radio processing unit is further used by Yu,

Performing the same weighting or splitting replication on the first of the plurality of signals to obtain the signal mapped to the same phase on the two ports; Differently weighting or splitting the second of the plurality of signals to obtain the signal mapped to the two ports with a phase difference of ±; τ.

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the base station further includes:

An intermediate frequency processing unit, configured to perform the same weighting or split replication on the first one of the plurality of signals to obtain the signal that is mapped to the same phase on the two ports; and perform the second signal on the multiple signals Different weighting or split phase shifting obtains the signal mapped to the two ports with a phase difference of ±; τ; and supplies the signals of the same phase and the signals of the phase difference to the radio frequency processing unit.

The present invention provides an antenna array, a method for signal mapping, and a base station, including a dual-polarized antenna for transmitting two signals, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions, The column dual-polarized antenna is divided into multiple groups according to a continuous queue, Μ is a natural number greater than or equal to 2, Ν is any natural number from 1 to Μ/2; two ports of each column of dual-polarized antennas of each odd array Signals of the same phase are coupled; two ports of each column of each dual-polarized antenna are coupled with a phase difference of ±; τ; or, each of the even arrays of each of the two ports of the dual-polarized antenna Coupling the signals of the same phase; the two ports of each column of the dual-polarized antenna of each odd-array are respectively coupled with signals with a phase difference of ±; such that in the adjacent dual-polarized antenna group, each column of the dual-polarized antennas in the group is different The phase of the signal in the polarization direction is the same, and the phase of the signal in the polarization direction of each column of the dual-polarized antenna in the other group is different; Γ, the polarization direction of the adjacent two sets of dual-polarized antennas in spatial resynthesis mutual Orthogonal, so that the signal corresponding to the logical path after the antenna array, the direction perpendicular to the polarization, spatial transmission when no interference, avoid the null effect appears to improve the performance of the antenna system. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only Is some embodiments of the invention, for Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

Figure 1 A is a schematic diagram of the CDD time domain implementation;

Figure 1B is a schematic diagram of the polarization direction of the dual-polarized antenna;

2 is a schematic diagram of the distribution of energy in the frequency domain when the CDD and the PSD are used in the prior art; FIG. 3A and FIG. 3B are schematic diagrams of a weighted signal direction according to an embodiment of the present invention; FIG. FIG. 5 is a schematic flowchart of a method for signal mapping according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a device for a base station according to an embodiment of the present invention; Another device structure diagram of another base station. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In the layer mapping mode CDD technology of the logic channel to the dual-polarized antenna, the signals of the same logic channel are transmitted through the antennas of the same polarization direction, causing interference of these homologous signals in space transmission, thereby causing some The subcarriers are in deep fading. For example, see FIG. 1A and FIG. 1B, which are schematic diagrams of CDD layer mapping of two logical channel to four-column dual-polarized antennas, FIG. 1A is a CDD time domain implementation diagram, and FIG. 1B is a four-row dual-polarization antenna pole. The direction of the logic channel 1 is transmitted by the CDD technology shown by the solid line in Figure 1A, and the antenna in the polarization direction shown by the solid line in Figure 1B; the signal of the logic channel 2 passes through Figure 1A. The CDD technology shown by the dotted line is transmitted in the polarization direction antenna shown by the broken line in Fig. 1B; the signals of the logical channel 1 and the logical channel 2 are respectively transmitted through the antennas of the same polarization direction, resulting in the homologous signal at Interference occurs during space transmission, causing some subcarriers to be in deep fading;

The time domain implementation of CDD is shown in Figure 1 A; in CDD technology, there is no Inverse Fast Fourier Transform (CDD)

The time domain symbol of IFFT is: _s

On the Nth transmit antenna, the time domain symbols after CDD are:

That is equivalent to weighting the subcarrier k by e ^Nfft in the frequency domain, the processing flow at this time is the same as the wide beam weighting, except that the weighting weight of each subcarrier in the frequency domain is different e(k) = where D is Delay step, usually 1-2 time domains

Sample point, N _FFT is the FFT length;

Therefore, the frequency domain mapping matrix of the CDD shown in Fig. 1A and Fig. 1B is:

1 0

0

-(2

0

-)) 0

0 1

0

0 ( ) )

0 ( ) ) In summary, CDD technology will introduce richer frequency domain selectivity, but it will also cause frequency domain nulling effect. There is a loss in the case of near-direct direct shooting conditions and the multipath is not rich, and the loss is higher for the Modulation and Coding Scheme (MCS). It is assumed that under the Additive White Gaussian Noise (AWGN) channel, the channel corresponding to each logical channel in the normal direction shown in FIG. 1A and FIG. 1B is: J _cdd = (l _{+ e} - _{+ e} -j monument, _{+ e} -j monument _xh .

In CDD technology, the channel corresponding to each logical channel in the normal direction is:

h _CDD = (1 + e-幽+ e monument, + ... + e- ^j(s - ^im ) xh

It can be seen that k = N _FFT I^N _FFT ll, 3N _FFT l4^L is set ^ ^ = 0.

Assume that when N _fT = 1024 and D=l, the distribution of channel energy in the frequency domain in the AWGN scene is shown by the dotted line in Figure 2. As can be seen from the dotted line in Figure 2, the frequency domain of the CDD technique is zero. The effect is very obvious.

Based on the CDD technology, the PSD technology scheme is proposed. The PSD technology adds a fixed phase angle to the CDD matrix. Its purpose is to prevent frequency domain nulling effects that may occur on certain subcarriers under strongly correlated channels. The specific solution is to increase the phase delay ^ on the last transmit antenna. In this case, the equivalent channel of each logical port becomes the normal direction of the PSD layer mapping of the logical channel to the dual-polarized antenna. : h _PSD = (1 + e ^j0(k) + e ^jW(k) + ... + "s-神") )x/z _; where e(^ = 2 Di,k = 0,\,. ..,K, indicates the number of subcarriers, "for delay step, i N FFT

For the phase shift factor, N is the FFT length, s represents multiple array elements with the same polarization distributed on the same line, / represents the channel response on the dual-polarized antenna array element 0;

From the normal channel of the PSD layer mapping of the dual-polarized antenna to the equivalent channel of the dual-polarized antenna, it can be seen that the frequency domain zero point will no longer exist, ie _5ΰ ≠0; at = τ, at AWGN In the scenario, the distribution of channel energy in the frequency domain is shown by the solid line in Figure 2. As can be seen from the solid line in Figure 2, there is no frequency domain nulling effect in PSD technology.

For example, in the PSD mapping of two logical channels to four dual-polarized antennas in the current product, each logical channel corresponds to four antennas of the same polarization, and the frequency domain mapping matrix of the PSD is: 1 0

e ^i{e(k)) 0

e ^{i 2e{k))} 0

W (k) =

0 1

0 e ^im)

0 e- ⁽ ))

Where θ, ΐ = 2πΟ丄, k = 0, \, ..., \2 x - L ) is the delay step, which is the phase shift factor

N FFT

Typically; D = l, φ = π.

PSD can enhance the frequency domain selectivity under non-strongly correlated channels, avoiding continuous subcarriers from being deeply fading and eliminating the nulling effect. However, since the signals of the same logical channel are transmitted through the antennas of the same polarization direction, these The homologous signals will interfere in spatial transmission, causing some subcarriers to be in deep fading; for example, it can be seen from the solid line in Figure 2 that in the AWGN scenario, some subcarriers still exist in the PSD. In deep fading, if data is distributed on these deep fading subcarriers, performance degradation will result.

However, in the following embodiments of the present invention, signals of the same logical channel are no longer mapped to antennas corresponding to the same polarization direction of different column antennas; instead, signals of the same logical channel are mapped to the same column of dual polarization. On the antenna corresponding to different polarization directions of the antenna, the electric fields of the two polarization directions in one column of the dual-polarized antenna are recombined into a new polarization direction in space. And for an antenna array having M columns of dual-polarized antennas, it is equally divided into a plurality of groups according to consecutive N columns, where M is a natural number greater than or equal to 2, and N is any natural number from 1 to M/2. Among the two sets of polarized antennas, one set of polarized antennas has the same signal phase in different polarization directions, and the other sets of polarized antennas have different phase differences in signal directions, so that the adjacent two groups After the signal of the re-channel of the polarized antenna in the space passes through the antenna array, the polarization direction is orthogonal, and no interference occurs in the space transmission, which reduces the occurrence of the nulling effect. It can be seen that the solution of the present invention is equivalent to performing weighting between two channels of single-column cross-polarization, and realizing mapping of a certain logical channel on two physical channels, and weighting in the form of the two electric fields in the two polarization directions in space Re-synthesize a new polarization direction, for example, as shown in Figure 3A, +45. The polarization direction and the -45 ° polarization direction and weighting will form a 90° polarization electric field (shown by the dashed line in Figure 3A), ie +/- 45 ° polarization to synthesize vertical polarization; As shown in Fig. 3B, the +45 ° polarization direction is weighted by the -45 ° polarization direction difference, and a 0 is formed. The electric field in the direction of polarization (shown by the dashed line in Figure 3B), ie +/- 45 ° polarization, synthesizes horizontal polarization; the two new polarization directions (shown in dashed lines in Figures 3A and 3B) are orthogonal, making the corresponding The signals on the two logical channels are spatially transmitted in mutually orthogonal polarization directions, reducing the nulling effect caused by interference. In one aspect, the present invention provides an antenna array 40. Referring to FIG. 4, the antenna array 40 can include: an M-column dual-polarized antenna 401 for transmitting M signals, and each column of dual-polarized antennas 401 includes two corresponding Two ports in the polarization direction; the M-column dual-polarized antenna 401 can be divided into multiple groups according to consecutive N columns, M is a natural number greater than or equal to 2, and N is any natural number from 1 to M/2;

The M-column dual-polarized antennas 401 included in the antenna array 40 are divided into two groups according to consecutive N columns, and can be classified into two types according to the physical positions of each set of dual-polarized antennas in the antenna array 40, and are respectively recorded as An odd array of dual polarized antennas and an even array of dual polarized antennas;

It should be noted that when N is 1, it is equivalent to not grouping the M columns of dual-polarized antennas 401 included in the antenna array 40, and combining one of the two adjacent columns of dual-polarized antennas. Weighting, another column of dual-polarized antennas performs difference weighting to reduce the occurrence of zero-trapping effect; when N is not 1, it is a scene considering broadband, for example, a broadband antenna with an equivalent column spacing of 0.65 λ or more, Each of the two sets of dual-polarized antennas in the adjacent two sets of dual-polarized antennas is weighted and each pair of dual-polarized antennas is differentially weighted by each column of dual-polarized antennas, which can also reduce zero. The emergence of trapping effects.

In the process in which the antenna array 40 transmits Μ signals, the coupling relationship between each set of dual-polarized antennas and the received signals can be implemented in any of the following two ways. Now:

The first way:

The two ports of each column of the dual-polarized antenna of each odd array are coupled with the same phase signal; the two ports of each of the dual-polarized antennas of each even array are respectively coupled with a phase difference;

Wherein, each port of each column of the dual-polarized antenna of each odd array is coupled with the same phase signal, and may include:

The two ports of each column of the dual-polarized antenna of each odd array are directly coupled to the signals of each logical channel corresponding to each of the odd-numbered columns of the dual-polarized antenna; or

The two ports of the dual-polarized antenna of each column of each odd array are coupled to the signals of each logical channel corresponding to each column of the dual-polarized antenna of each odd-numbered group, and the signals are subjected to the same weighted signal. For example, the weight of the same phase, where the value is not subject to any restrictions, can be 0, can also be positive or negative.

Wherein, the two ports of each column of the dual-polarized antenna of each even array are respectively coupled with phase difference; the signal of the Γ may include:

One of the two ports of each column of dual-polarized antennas of each even array is directly coupled to the signal of each logical channel corresponding to each column of dual-polarized antennas of each even array, and the other port is coupled with each even number The signal weighted phase of each logical channel corresponding to each column of the dual-polarized antenna of the group; the signal of Γ; or

One of the two ports of each column of the dual-polarized antenna of each even array is coupled with the signal-weighted phase of each logical channel corresponding to each of the dual-polarized antennas of each even array, and the other port Coupling a signal with a weighted phase ± τ of each logical channel corresponding to each column of dual-polarized antennas of each even array, so that the two ports are respectively coupled with signals having a phase difference of ± τ; wherein, the value is not limited Can be 0 or positive or negative.

It should be noted that the dual-polarized antenna 401 has two polarization directions, and each polarization direction corresponds to one port, wherein the first port is any one of the two ports of the dual-polarized antenna, and the dual-polarized antenna The second port in 401 is another port of the dual-polarized antenna except the first port, and all embodiments of the present invention are directed to the first port and the first port. The two ports are not specifically limited.

In addition, in order to ensure that the propagation paths of the signals from the feed to the antenna are consistent, the antenna array can be calibrated. The effect of the calibration is equivalent to performing a calibration phase weighting for each column of dual-polarized antennas. Therefore, the calibration and the above process of weighting the signal can be done by one weighting to simplify the calibration and weighting process. For example, for a column of dual-polarized antennas, in order to ensure that the propagation paths of the signals of the two ports from the feed to the antenna are consistent, it is necessary to perform phase (^ calibration of the signal of one port and signal of the other port). Phase calibration. When the two ports of the column of dual-polarized antennas are coupled with the same phase signal, the signals coupled to the two ports of the column of the dual-polarized antenna are respectively phase-wise (^ ± ^ and phase α ₂ ± weighted) After the signal, the value is not limited, it can be 0, or it can be positive or negative. When the two ports of the dual-polarized antenna are coupled with phase difference, the signal is coupled to the The signals of the two ports of the dual-polarized antenna are the signals after the phase (^ ± Α and phase oc ₂ ± Α, respectively, wherein the values of A and A are not limited, as long as the difference is not enough.

Of course, the calibration and the above process of weighting the signals can be performed independently, and the calibration is performed in the same manner as the existing calibration method, and the embodiment of the present invention does not impose any limitation.

Preferably, the M-column dual-polarized antennas in the antenna array 40 are equally divided into multiple groups according to consecutive N columns, wherein when N is 1, it is equivalent to not grouping the M-column dual-polarized antennas 401 in the antenna array 40, and the antenna array 40 The M-column dual-polarized antenna 401 included in the antenna array 40 is divided into two types according to the physical position of each column of the dual-polarized antenna in the antenna array 40, and is recorded as an odd-numbered double-polarized antenna and an even-numbered dual-polarized antenna, respectively. Then, the coupling relationship between each column of dual-polarized antennas and the received signal can be:

The two ports of each odd-numbered dual-polarized antenna are coupled with signals of the same phase; the two ports of each even-numbered dual-polarized antenna are respectively coupled with signals having a phase difference of ±.

Exemplarily, when the antenna array 40 includes two columns of dual-polarized antennas 401, the two columns of dual-polarized antennas 401 are respectively recorded as the first column of dual-polarized antennas according to the physical position of the dual-polarized antennas in the antenna array. column polarized antenna for transmitting a first signal and a second signal; wherein the first signal is a signal of a first logical channel, the second channel is recorded as S _l The signal of the second logical channel is recorded as s ₂ ;

The two signals of the two logical channels can be recorded as a matrix:

The coupling relationship between the two columns of dual-polarized antennas 401 and the two signals may include multiple types, and the signals coupled to the two ports corresponding to the two polarization directions of each dual-polarized antenna are expressions of the original signal or the original signal. Recording signals of two ports of the first column of dual-polarized antennas corresponding to two polarization directions as Y ₂ , and recording signals of two ports of the second column of dual-polarized antennas corresponding to two polarization directions as Υ ₃ and Υ ₄ ;

The coupling relationship between the two columns of dual-polarized antennas 401 and the two signals can be achieved by either of the following two conditions:

In a first case, the first port and the second port of the first column of dual-polarized antennas are coupled to the first signal; the first port of the second column of dual-polarized antennas is coupled to the second signal, and the second port is coupled to the second of the weighted The signal, the weighted second signal and the phase of the second signal are different; in the second case, the first port and the second port of the first column of the dual-polarized antenna are coupled with the weighted first signal; The first port of the polarized antenna is coupled with the second signal after weighting 1 , and the second port is coupled with the second signal after weighting 2, and the phase of the second signal after weighting 1 is different from the phase of the second signal after weighting 2;

For example, the frequency domain mapping matrix corresponding to the signal coupled by the antenna array 40 can be:

That is, the signals in each port of the two columns of dual-polarized antennas 401 in the antenna array 40 can be expressed as:

The calculation is available:

Y, = S _x e ^m , Y ₂ = S _x e ^m , Y ₃ = S^*, Y ₄ = Sf, where θ, no range constraint, δ = ±π can be seen, the first column of bipolar The signals Yi and Y ₂ of the two ports corresponding to the two polarization directions of the antenna are the same, and the signals Υ ₃ and Υ ₄ of the two ports corresponding to the two polarization directions of the second column of the dual-polarized antenna are different. Γ;

When ^ is 0, it is the first case; when ^ is not 0, it is the second case.

Exemplarily, when the antenna array 40 includes the four-column dual-polarized antenna 401, the four-column dual-polarized antenna 401 is recorded as the first column of the dual-polarized antenna according to the physical position of the dual-polarized antenna in the antenna array. a two-column dual-polarized antenna, a third-row dual-polarized antenna, and a fourth-row dual-polarized antenna, configured to transmit a first signal, a second signal, a third signal, and a fourth signal, where the first signal is first signal of logical channels, recorded as the second signal S _l is the signal of the second logical channels, recorded as S _2, a third signal path for the signal from the third logic recorded as S _3, the fourth signal of the second logical channel The signal is recorded as S ₄ ; the four signals of the four logical channels can be recorded as a matrix:

The coupling relationship between the four-column dual-polarized antenna 401 and the four signals may include multiple types, and the signal coupled to the two ports corresponding to the two polarization directions of each dual-polarized antenna is an expression of the original signal or the original signal. Recording signals of two ports of the first column of dual-polarized antennas corresponding to two polarization directions as Y ₂ , and recording signals of two ports of the second column of dual-polarized antennas corresponding to two polarization directions as Υ ₃ and Υ ₄ , recording the signals of the two ports of the third column of the dual-polarized antenna corresponding to the two polarization directions as Υ ₅ and Υ ₆ , and the corresponding two polarization directions of the fourth column of the dual-polarized antenna The signals of the two ports are recorded as Υ ₇ and Υ ₈ ; specifically, the coupling relationship between the four-column dual-polarized antenna 401 and the four signals can be realized by any of the following two situations: First situation:

The first port and the second port of the first column of dual-polarized antennas are coupled to the first signal; the first port of the second column of dual-polarized antennas is coupled to the second signal, and the second port is coupled to the weighted second signal, after weighting The second signal is different from the phase of the second signal; the first port and the second port of the third column of the dual-polarized antenna are coupled to the third signal; the first port of the fourth column of the dual-polarized antenna is coupled to the fourth signal, The second port couples the weighted fourth signal, and the weighted fourth signal and the fourth signal have a phase difference of ±7Γ; the second case:

The first port and the second port of the first column of dual-polarized antennas are coupled to the weighted first signal;

The second port of the second column of dual-polarized antennas is coupled with the second signal after weighting 1, the second port is coupled with the second signal after weighting 2, and the second signal after weighting 1 is different from the phase of the second signal after weighting 2. ;; Γ;

The first port and the second port of the third column of dual-polarized antennas are coupled to the weighted third signal;

The fourth port of the fourth column of dual-polarized antennas is coupled with the fourth signal after weighting 1, the second signal of the second port coupled with weighting 2, the phase of the fourth signal after weighting 1 and the phase of the fourth signal after weighting 2 ± τ.

Exemplarily, the frequency domain mapping matrix corresponding to the signal coupled by the antenna array 40 can be: e ⁰ 0 0 0

0 0 0

(ft

0 0 0 e ³

e ^w " 0 0 0

0 0 0

That is, the signal in each port of the four-column dual-polarized antenna 40 1 in the antenna array 40 can be expressed as: γ,

3⁄4

The calculation is available:

Y _{ = _x e ⁱ , Y ₂ = S^", Y ₃ = S ₂ e ^{i (K} , Y ₄ = S ₂ e ^m+So) , Y ₅ = S ₃ e ⁱ⁰² , Y ₆ = S ₃ e ⁱ⁰² , Y ₇ = S e , Y _% =S _A e^ ^] ; where θ, no range constraint, =士;

It can be seen that the signals Yi and Y ₂ of the two ports corresponding to the two polarization directions of the first column of dual-polarized antennas have the same phase, and the two columns of the second column of the dual-polarized antenna corresponding to the two polarization directions The signals Υ ₃ and Υ _{4 are} different in phase; Γ , the signals of the two columns corresponding to the two polarization directions of the third column of dual-polarized antennas are the same as the phases of Υ ₅ and Υ ₆ , and the corresponding two of the fourth column of dual-polarized antennas Ah two signal ports ₇ and two polarization directions of phase Υ ₈ Disabled; Gamma]; when,, θ _2, when the value is 0, the first case; when,, θ ₂ value is not 0 When, the second case.

Optionally, the array of dual-polarized antennas in the antenna array 40 are divided into multiple groups according to a continuous queue, and when Ν is not 1, the scene of the double-polarized antenna of the odd array is considered in consideration of a wide-band scene. Dual-polarized antennas are both weighted and weighted. Each column of dual-polarized antennas with even-array dual-polarized antennas is differentially weighted, which also reduces the occurrence of zero-trapping effects.

Exemplarily, when the antenna array 40 includes the four-column dual-polarized antenna 401, the four-column dual-polarized antenna 401 is recorded as the first column of the dual-polarized antenna according to the physical position of the dual-polarized antenna in the antenna array. a two-column dual-polarized antenna, a third-row dual-polarized antenna, and a fourth-row dual-polarized antenna, configured to transmit a first signal, a second signal, a third signal, and a fourth signal, where the first signal is first signal of logical channels, recorded as the second signal S _l is the signal of the second logical channels, recorded as S _2, the third signal is a signal of the third logical channel is recorded as S _3, the fourth signal of the second logical channel The signal is recorded as S ₄ ; the four columns of dual-polarized antennas 401 in the antenna array 40 are equally divided into two groups according to two consecutive columns, A column of dual-polarized antennas and a second column of dual-polarized antennas are recorded as a first set of dual-polarized antennas, and a third-row dual-polarized antenna and a fourth-row dual-polarized antenna are recorded as a second set of dual-polarized antennas;

The four signals of the four logical channels can be recorded as a matrix:

The coupling relationship between the four-column dual-polarized antenna 401 and the four signals may include multiple types, and the signal coupled to the two ports corresponding to the two polarization directions of each dual-polarized antenna is an expression of the original signal or the original signal. Recording signals of two ports of the first column of dual-polarized antennas corresponding to two polarization directions as Y ₂ , and recording signals of two ports of the second column of dual-polarized antennas corresponding to two polarization directions as Υ ₃ and Υ ₄ , recording the signals of the two ports of the third column of the dual-polarized antenna corresponding to the two polarization directions as Υ ₅ and Υ ₆ , and the corresponding two polarization directions of the fourth column of the dual-polarized antenna The signals of the two ports are recorded as Υ ₇ and Υ ₈ ; specifically, the coupling relationship between the four-column dual-polarized antenna 401 and the four signals can be realized by any of the following two situations:

Chu

Brother's situation:

Chu

The first port and the second port of the dual-polarized antenna are coupled to the first signal; the first port and the second port of the two-column dual-polarized antenna are coupled with the second signal; The first port of the antenna is coupled with the third signal, the second port is coupled with the weighted third signal, and the phase of the weighted third signal and the third signal is different; Γ; the first port of the fourth column of the dual-polarized antenna Coupling the fourth signal, the second port coupling the weighted fourth signal, and the phase of the weighted fourth signal and the fourth signal are different; Γ;

The first 'port and the second port of the first column of dual-polarized antennas are coupled to the weighted first signal;

The first 'port and the second port of the second column of dual-polarized antennas are coupled to the weighted second signal;

The third port of the third column of dual-polarized antennas is coupled with a third signal after weighting 1, second The third signal after the port coupling weight 2, the phase of the third signal after weighting 1 and the phase of the third signal after weighting 2 are different;

The fourth port of the fourth column of dual-polarized antennas is coupled with the fourth signal after weighting 1, the second signal of the second port coupled with weighting 2, the phase of the fourth signal after weighting 1 and the phase of the fourth signal after weighting 2士; Γ.

Exemplarily, the frequency domain mapping matrix corresponding to the signal coupled by the antenna array 40 may be: e ^w . 0 0 0

0 0 0

0 0 0 e' ^3⁄4

e ^w . 0 0 0

0 e ^i(h 0 0

0 0 0

0 0 0 That is, the signal in each port of the four-column dual-polarized antenna 40 1 in the antenna array 40 can be expressed as:

γ,

3⁄4

The calculation is available:

Y _{ = _x e ⁱ , Y ₂ = S _x e ^i6a , Y ₃ = S ₂ e ^Wi , Y ₄ = S ₂ e ^w , Y ₅ = S ₃ e ⁱ⁰² , Y ₆ = 5* ₃ e'—( ^{+3⁄4 )} , Y ₇ = S e , y ₈ = 5 '( ⁺ W ; where θ, no range constraint, = ±; it can be seen that the first column of dual-polarized antennas in the first set of dual-polarized antennas The signals of the two ports corresponding to the two polarization directions are the same as the phase of Y _{2 , and the} phases of the signals Υ ₃ and Υ ₄ of the two ports corresponding to the two polarization directions of the second column of dual-polarized antennas are also the same; Two of the two columns of dual-polarized antennas corresponding to two polarization directions The signals of the ports Y ₅ and Υ _{6 are} different in phase; τ , the signals of the two columns corresponding to the two polarization directions of the fourth column of dual-polarized antennas are also different in phase ; ₇ and Υ ₈ ;

When , , θ ₂ . is 0, it is the first case; when , , θ ₂ . When the value is not 0, it is the second case. The second way:

The two ports of each column of the dual-polarized antenna of each even array are coupled with the same phase signal; the two ports of each column of the dual-polarized antenna of each odd-numbered array are respectively coupled with a phase difference;

Wherein, two ports of each column of the dual-polarized antenna of each even array are coupled with signals of the same phase, which may include:

Two ports of each column of dual-polarized antennas of each even array are directly coupled with signals of each logical channel corresponding to each column of dual-polarized antennas of each even array; or

The two ports of each column of the dual-polarized antenna of each even array are coupled to the signals of each logical channel corresponding to each of the dual-polarized antennas of each even array, and the signals are subjected to the same weighted signal. For example, the weight of the same phase, where the value does not impose any restrictions, can be 0, can also be positive or negative.

Wherein, the two ports of each column of the dual-polarized antenna of each odd array are respectively coupled with a phase difference; the signal of the chirp may include:

One of the two ports of each column of the dual-polarized antenna of each odd array is directly coupled to the signal of each logical channel corresponding to each column of the dual-polarized antenna of each odd-numbered array, and the other port is coupled with each odd number The signal weighted phase of each logical channel corresponding to each column of the dual-polarized antenna of the group; the signal of Γ; or

One of the two ports of each column of the dual-polarized antenna of each odd array is coupled with the signal-weighted phase of each logical channel corresponding to each column of each of the odd-array antennas, and the other port Coupling a signal with a weighted phase ± τ of each logical channel corresponding to each column of dual-polarized antennas of each odd-numbered array, so that the two ports are respectively coupled with signals of phase-phase difference; wherein, the value is not limited Can be 0 or positive or negative. Preferably, the M-column dual-polarized antennas in the antenna array 40 are equally divided into multiple groups according to consecutive N columns, wherein when N is 1, it is equivalent to not grouping the M-column dual-polarized antennas 401 in the antenna array 40, and the antenna array 40 The M-column dual-polarized antenna 401 included in the antenna array 40 is divided into two types according to the physical position of each column of the dual-polarized antenna in the antenna array 40, and is recorded as an odd-numbered double-polarized antenna and an even-numbered dual-polarized antenna, respectively. Then, the coupling relationship between each column of dual-polarized antennas and the received signal can be:

The two ports of each even-numbered dual-polarized antenna are coupled with signals of the same phase; the two ports of each odd-numbered dual-polarized antenna are respectively coupled with signals of phase difference.

Exemplarily, when the antenna array 40 includes two columns of dual-polarized antennas 401, the two columns of dual-polarized antennas 401 are respectively recorded as the first column of dual-polarized antennas according to the physical position of the dual-polarized antennas in the antenna array. polarized antenna columns, a first signal and a second signal for transmission, wherein the first signal is a signal of a first logical channel, the second signal S _l is recorded as a signal of the second logical channels, recorded as S _2;

The two signals of the two logical channels can be recorded as a matrix: "

The first case: the first port of the first column of dual-polarized antennas is coupled with the first signal, the second port is coupled with the weighted first signal, and the weighted first signal is different from the phase of the first signal; the second column The first port and the second port of the dual-polarized antenna are coupled to the second signal; the second case: the first port of the first column of the dual-polarized antenna is coupled with the first signal after weighting 1 and the second port is coupled with the weighted 2 a signal, after the weighting of 1, the first signal is different from the phase of the first signal after weighting 2; the first port and the second of the second column of the dual-polarized antenna The ports are coupled to the weighted second signal.

The calculation is available:

Υ, = S _x e ^m , Υ ₂ = , Υ ₃ = S^*, Υ ₄ = S^*; where Θ, no range constraint,

^ = ± ;

It can be seen that the signals Y i and Y ₂ of the two columns corresponding to the two polarization directions of the first column of the dual-polarized antenna are phase-difference; Γ , the two columns of the dual-polarized antenna correspond to two polarization directions The signals Υ ₃ and Υ _{4 of the} two ports have the same phase;

When ^ is 0, it is the first case; when ^ is not 0, it is the second case.

Exemplarily, when the antenna array 40 includes the four-column dual-polarized antenna 401, the four-column dual-polarized antenna 401 is recorded as the first column of the dual-polarized antenna according to the physical position of the dual-polarized antenna in the antenna array. a two-column dual-polarized antenna, a third-row dual-polarized antenna, and a fourth-row dual-polarized antenna, configured to transmit a first signal, a second signal, a third signal, and a fourth signal, where the first signal is first logical channel signal, S ₁ is recorded as the second signal is a signal of the second logical channels, recorded as S _2, the third signal is a signal of the third logical channel is recorded as S _3, the fourth signal of the second logical channel The signal is recorded as S ₄ ; the four signals of the four logical channels can be recorded as a matrix:

First situation:

The first port and the second port of the first column of dual-polarized antennas are coupled to the first signal; the first port of the second column of dual-polarized antennas is coupled to the second signal, and the second port is coupled to the weighted second signal, after weighting The second signal is different from the phase of the second signal; the first port and the second port of the third column of the dual-polarized antenna are coupled to the third signal; the first port of the fourth column of the dual-polarized antenna is coupled to the fourth signal, The second port couples the weighted fourth signal, and the weighted fourth signal is out of phase with the fourth signal by ±; τ;

The first port of the first column of dual-polarized antennas is coupled with the first signal after weighting 1 , the second port is coupled with the first signal after weighting 2, and the first signal after weighting 1 is different from the phase of the first signal after weighting 2 ;; Γ;

The first port and the second port of the second column of dual-polarized antennas are coupled to the weighted second signal;

The third port of the third column of dual-polarized antennas is coupled with the third signal after weighting 1, the second port is coupled with the third signal after weighting 2, and the third signal after weighting 1 is different from the phase of the third signal after weighting 2. ;; Γ; The first port and the second port of the fourth column of dual-polarized antennas are coupled to the weighted fourth exemplary embodiment, and the frequency domain mapping matrix corresponding to the signal coupled by the antenna array 40 may be: e ^w . 0 0 0

0 0 0

0 0 0 That is, the signal in each port of the four-column dual-polarized antenna 401 in the antenna array 40 can be expressed as:

The calculation is available:

Y, = S^", =5 - ( ^e . ⁺ ), 7 ₃ - S e ^{i (K} , Y ₄ = S ₂ e ^{i <} , Y ₅ = S ₃ e ⁱ⁰² , Y ₆ = S^ ² ^, _{_{Y 7 = S 4 e, 7}} 8 - ¾; wherein, θ, no range constraints, δ = ± π

It can be seen that the signals Yi and Y ₂ of the two ports corresponding to the two polarization directions of the first column of the dual-polarized antenna are different in phase; Γ, the two columns of the two polarization directions corresponding to the two polarization directions Upsilon same signal ports ₃ and Υ ₄ phase; two signal ports Upsilon two polarization directions corresponding to the third column of the dual-polarized antenna ₅ and Υ ₆ out of phase with disabilities; Gamma]; fourth column polarized antenna The signals Υ ₇ and Υ ₈ of the two ports corresponding to the two polarization directions are the same phase; when , , θ ₂ . is 0, it is the first case; when, , θ ₂ . When 0, it is the second case. Optionally, the M-column dual-polarized antennas in the antenna array 40 are equally divided into multiple groups according to consecutive N columns. When N is not 1, it is a scene considering broadband, such as bandwidth; Each column of dual-polarized antennas is doped and weighted, and each column of dual-polarized antennas of odd-array dual-polarized antennas is differentially weighted, which also reduces the occurrence of zero-trapping effects.

Exemplarily, when the antenna array 40 includes the four-column dual-polarized antenna 401, the four-column dual-polarized antenna 401 is recorded as the first column of the dual-polarized antenna according to the physical position of the dual-polarized antenna in the antenna array. a two-column dual-polarized antenna, a third-row dual-polarized antenna, and a fourth-row dual-polarized antenna, configured to transmit a first signal, a second signal, a third signal, and a fourth signal, where the first signal is first signal of logical channels, recorded as the second signal S _l is the signal of the second logical channels, recorded as S _2, the third signal is a signal of the third logical channel is recorded as S _3, the fourth signal of the second logical channel The signal is recorded as S ₄ ; the four columns of dual-polarized antennas 401 in the antenna array 40 are equally divided into two groups according to two consecutive columns, and the first-column dual-polarized antenna and the second-row dual-polarized antenna are recorded as the first group of doubles. The polarized antenna, the third column of dual-polarized antennas and the fourth column of dual-polarized antennas are recorded as a second set of dual-polarized antennas;

The four signals of the four logical channels can be recorded as a matrix:

First situation: The first port of the first column of dual-polarized antennas is coupled to the first signal, the second port is coupled to the weighted first signal, and the weighted first signal is different from the phase of the first signal; the second column of dual-polarized antennas The first port is coupled to the second signal, the second port is coupled to the weighted second signal, and the weighted second signal is different from the phase of the second signal; the first port and the second port of the third column of dual-polarized antennas Each of the first signal and the second port of the fourth column of the dual-polarized antenna is coupled to the fourth signal.

The second situation:

The first port of the first column of dual-polarized antennas is coupled with the first signal after weighting 1 , the second port is coupled with the first signal after weighting 2, and the first signal after weighting 1 is different from the phase of the first signal after weighting 2 Gentry

The first port and the second port of the fourth column of dual-polarized antennas are coupled to the weighted fourth signal.

0 0 0

Ϊθ,

0 0 0 e

0 0 0

0 0 0 e ³ That is, the signal in each port of the four-column dual-polarized antenna 40 1 in the antenna array 40 can be expressed as:

The calculation is available:

Y _{ = _x e ⁱ , Y ₂ = S^ ⁰ ^, Y ₃ = S ₂ e ^Wi , Y = S ₂ e ^m+s ' ^] , Y ₅ = S ₃ e ⁱ⁰² , Y ₆ = S ₃ e ⁱ⁰² , Y ₇ = S e , Y, =S ₄ e^ ; where θ, no range constraint, =士;

It can be seen that the signals of the two columns corresponding to the two polarization directions of the first column of the first pair of dual-polarized antennas are different from the phase of the Υ ₂ phase; Γ, the second column of the dual-polarized antenna two directions of polarization corresponding to two signals Ah ports ₃ and also the phase difference Υ ₄ Disabled; Gamma]; two polarization directions corresponding to the second set of two dual polarized antenna of the third column of the dual-polarized antenna The signals Υ ₅ and Υ _{6 of the} port are in the same phase, and the signals Υ ₇ and Υ ₈ of the two ports corresponding to the two polarization directions of the fourth column of the dual-polarized antenna are also the same;

When , , θ ₂ . is 0, it is the first case; when , , θ ₂ . When the value is not 0, it is the second case. An embodiment of the present invention provides an antenna array 40, including a dual-polarized antenna 401 for transmitting two signals, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions, and a double pole The antennas are divided into groups according to consecutive queues, Μ is a natural number greater than or equal to 2, Ν is any natural number from 1 to Μ/2; two ports of each column of each odd-integrated antenna are coupled with phase The same signal; the two ports of each column of the dual-polarized antenna of each even array are respectively coupled with the phase-difference signals; or, the two ports of each of the dual-polarized antennas of each even array are coupled with the same phase a signal; each of the odd-numbered arrays of each of the two ports of the dual-polarized antenna is coupled with a phase difference; a signal of Γ; such that in a pair of adjacent dual-polarized antennas, a different pole of each column of the dual-polarized antenna The signals in the direction of the same phase are the same, and the signals in different polarization directions of each column of the dual-polarized antennas in the other group The phase difference is different; Γ , the polarization directions of the adjacent two sets of dual-polarized antennas recombined in space are orthogonal to each other, so that the signals corresponding to the logical channels are orthogonal after the antenna array passes, and are not transmitted in space. Interference will occur, avoiding the occurrence of the nulling effect, thus effectively improving the performance of the antenna feeder system. In another aspect, the present invention provides a signal mapping method for mapping two signals to a tandem dual-polarized antenna of an antenna array, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions. The dual-polarized antennas are divided into multiple groups according to a continuous queue, and Μ is a natural number greater than or equal to 2, and Ν is any natural number from 1 to Μ/2; the method may include:

501. Map each signal to a column of dual-polarized antennas;

Wherein, when mapping a signal to an even array of dual-polarized antennas, the signals mapped by the two ports of each column of the dual-polarized antenna of the even array are the same; when mapping the signals to each column of the dual-polarized antenna of the odd array When the odd-numbered array of the two ports of each column of the dual-polarized antenna is mapped to a signal phase difference; Γ; or,

When mapping a signal to an even array of dual-polarized antennas, the phase of the signal mapped by the two ports of each column of the dual-polarized antenna of the even array is different; Γ ; when mapping the signal to an odd-array dual-polarized antenna The two signals of each column of the dual-polarized antenna of the odd array are mapped with the same phase of the signal.

Preferably, when Ν is 1, the signal is mapped to a column of dual-polarized antennas, including,

When the signal is mapped to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are the same; when the signal is mapped to the odd-numbered dual-polarized antenna, the odd-numbered column is doubled The phase of the signal mapped by the two ports of the polarized antenna is different; Γ; ^ ,

When the signal is mapped to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are different in phase; when the signal is mapped to the odd-numbered dual-polarized antenna, the odd number The signals mapped by the two ports of the column dual-polarized antenna are of the same phase. Specifically, when the number of dual polarizations included in the antenna array is different, the specific process of the signal mapping method may also be different, which is described in detail below;

Exemplarily, when the antenna array includes two columns of dual-polarized antennas for transmitting the first signal and the second signal, the method for signal mapping may include the following two methods:

the first method:

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: directly mapping the first signal to the first port and the second port of the first column of dual-polarized antennas; or Mapping the first weighted first signal to the first port and the second port of the first column of dual-polarized antennas;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: mapping the second signal directly to the first port of the second column of dual-polarized antennas, and weighting The second signal is mapped to the second port of the second column of the dual-polarized antenna, wherein the weighted second signal is different from the phase of the second signal; Γ; or, the differently weighted second signals are respectively mapped to The first port and the second port of the second column of dual-polarized antennas, wherein the phases of the different weighted second signals are different;

The second method:

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes mapping the first signal directly to the first port of the first column of dual-polarized antennas, and the weighted The first signal is mapped to the second port of the first column of the dual-polarized antenna, wherein the weighted first signal is different from the phase of the first signal; Γ; or, the first signal that is differently weighted is mapped to the first a first port and a second port of a dual-polarized antenna, wherein a phase difference of the first signal of different weights is different;

Mapping the second signal directly to the first port and the second port of the second column of dual-polarized antennas; or mapping the second signal subjected to the same weighting to the first port and the second of the second column of dual-polarized antennas Port

It should be noted that, in this embodiment, only the mapping correspondence is described herein. The foregoing embodiment has been described in detail for the weighting of the same weighting signal or the weighting signal, and details are not described herein again.

Illustratively, when the antenna array includes four columns of dual-polarized antennas for transmitting the first letter The number, the second signal, the third signal, and the fourth signal, the method of signal mapping may include the following four methods:

the first method:

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: mapping the second signal directly to the first port of the second column of dual-polarized antennas, and weighting The second signal is mapped to the second port of the second column of the dual-polarized antenna, wherein the weighted second signal is different from the phase of the second signal; Γ; or, the differently weighted second signals are respectively mapped to a first port and a second port of the second column of dual-polarized antennas, wherein the phases of the different weighted second signals are different;

For the third column of dual-polarized antennas, mapping the third signal to the third column of dual-polarized antennas includes: directly mapping the third signal to the first port and the second port of the third column of dual-polarized antennas; or Mapping the third signal that has undergone the same weighting to the first port and the second port of the third column of dual-polarized antennas;

For the fourth column of dual-polarized antennas, mapping the fourth signal to the fourth column of dual-polarized antennas includes: mapping the fourth signal directly to the first port of the fourth column of dual-polarized antennas, and the weighted The fourth signal is mapped to the second port of the fourth column of the dual-polarized antenna, wherein the weighted fourth signal is different from the phase of the fourth signal; Γ; or, the differently weighted fourth signals are respectively mapped to The first port and the second port of the fourth column of the dual-polarized antenna, wherein the phase of the differently weighted fourth signals is different;

The second method:

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: mapping the first signal directly to the first port of the first column of dual-polarized antennas, and the weighted The first signal is mapped to the second port of the first column of dual-polarized antennas, wherein the weighted first signal is different from the phase of the first signal; or, the different weighted first signals are mapped to the first First and second ends of a column of dual polarized antennas Port, wherein, the phase difference of the first signal after different weighting is different;

For the third column of dual-polarized antennas, mapping the third signal to the third column of dual-polarized antennas includes: mapping the third signal directly to the first port of the third column of dual-polarized antennas, and the weighted The third signal is mapped to the second port of the third column of the dual-polarized antenna, wherein the weighted third signal is different from the phase of the third signal; Γ; or, the third signal that is differently weighted is mapped to the third signal a first port and a second port of the three-column dual-polarized antenna, wherein a phase difference of the third signal of different weights is different;

The third method:

For the third column of dual-polarized antennas, mapping the third signal to the third column of dual-polarized antennas includes: mapping the third signal directly to the first port of the third column of dual-polarized antennas, and the weighted The third signal is mapped to the second port of the third column dual-polarized antenna, wherein the weighted third signal and the third signal are in phase difference

±π ; or, the differently weighted third signals are mapped to the third column a first port and a second port of the polarized antenna, wherein the different weighted third signals are different from each other;

The fourth method:

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: mapping the second signal directly to the first port of the second column of dual-polarized antennas, and The weighted second signal is mapped to the second port of the second column of dual-polarized antennas, wherein the weighted second signal and the second signal are different in phase; or Mapping the second signals that are differently weighted to the first port and the second port of the second column of dual-polarized antennas, wherein the phase of the different weighted second signals is different; ;

For the fourth column of dual-polarized antennas, the fourth signal is mapped to the fourth column of dual-polarized antennas, The method includes: directly mapping a fourth signal to a first port and a second port of the fourth column of dual-polarized antennas; or mapping the fourth signal that is subjected to the same weighting to the fourth column of dual-polarized antennas First port and second port.

An embodiment of the present invention provides a signal mapping method, which is used to map M signals to an M-column dual-polarized antenna of an antenna array, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions, The column dual-polarized antenna is divided into a plurality of groups according to a continuous queue, Μ is a natural number greater than or equal to 2, and Ν is any natural number from 1 to Μ/2; by mapping each signal to a column of dual-polarized antennas, wherein When mapping a signal to each column of dual-polarized antennas in an even array, the signals mapped by the two ports of each column of the dual-polarized antenna of the even array are the same; when mapping the signals to each column of the dual-polarized antenna of the odd array The phase of the signal mapped by the two ports of each column of the dual-polarized antenna of the odd array is different; Γ ; or, when mapping the signal to each column of the dual-polarized antenna of the even array, the bipolar of each column of the even array The phase of the signal mapped by the two ports of the antenna is different; when the signal is mapped to each column of the dual-polarized antenna of the odd array, the signals of the two ports of each column of the dual-polarized antenna of the odd array are the same; Make In an adjacent dual-polarized antenna group, the signals in different polarization directions of each column of the dual-polarized antennas in one group have the same phase, and the signals in different polarization directions of each column of the dual-polarized antennas in the other group are different in phase. ; , the polarization directions of the two sets of dual-polarized antennas in the spatial resynthesis are orthogonal to each other, so that the signals of the corresponding logical channels are orthogonal after the antenna array passes, and no interference occurs during spatial transmission. , avoiding the occurrence of the nulling effect, thereby effectively improving the performance of the antenna feeder system. In another aspect, the embodiment of the present invention provides a base station 60. Referring to FIG. 6, the base station 60 may include: a baseband processing unit 601, a radio frequency processing unit 602, and an antenna array 40 according to any of the foregoing embodiments. The antenna array 40 may include a dual-polarized antenna 401, and each of the dual-polarized antennas 401 may include two ports corresponding to two polarization directions, and the dual-polarized antennas may be divided into multiple consecutive columns. Group, Μ is a natural number greater than or equal to 2, Ν is any natural number from 1 to Μ/2;

The baseband processing unit 601 is configured to generate one signal;

The RF processing unit 602 is configured to map the signals to the antenna array 40. Column dual-polarized antenna 401 for transmitting the M signals through antenna array 40; wherein, when mapping the signal to each column of dual-polarized antennas of even arrays, two ports of each column of dual-polarized antennas of even array The mapped signals have the same phase; when the signals are mapped to each column of the dual-polarized antenna of the odd array, the signals of the two ports of each column of the dual-polarized antenna of the odd array are different in phase; Γ;

When mapping a signal to each column of dual-polarized antennas in an even array, the signals mapped by the two ports of each column of the dual-polarized antenna of the even array differ in phase; when mapping the signal to each column of the bipolar of the odd array When the antenna is antennaized, the signals mapped by the two ports of each column of the dual-polarized antenna of the odd array are the same.

Preferably, N is 1, and when mapping the signal to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are the same; when the signal is mapped to the odd-numbered column dual-polarization In the case of an antenna, the signals mapped by the two ports of the odd-numbered dual-polarized antenna are different in phase; Γ;

When the signal is mapped to the even-column dual-polarized antenna, the signals mapped by the two ports of the even-column dual-polarized antenna are different in phase; when the signal is mapped to the odd-numbered dual-polarized antenna, the odd number The signals mapped by the two ports of the column dual-polarized antenna are of the same phase.

Where the signals mapped to the same phase on the two ports are obtained by the same signal through the same weighting or splitting; mapping to the phase difference between the two ports; the signal of the Γ is differently weighted or divided by the same signal The phase is obtained by phase shifting.

Further, the baseband processing unit 601 can also be used,

Performing the same weighting or splitting of the first of the plurality of signals to obtain a signal that is mapped to the same phase on both ports;

The second signal of the plurality of signals is subjected to different weighting or split phase shifting to obtain a signal that is phase-shifted to the two ports;

Optionally, the RF processing unit 602 can also be used to:

Performing different weighting or splitting phase shifting on the second of the plurality of signals to obtain a mapping to The phase difference between the two ports; Γ signal.

Further, referring to FIG. 7, the base station 60 may further include:

The intermediate frequency processing unit 603 is configured to perform the same weighting or split replication on the first one of the plurality of signals to obtain a signal that is mapped to the same phase on the two ports;

Performing different weighting or split phase shifting on the second signal of the plurality of signals to obtain the phase difference signal of the two channels; the signal of the same phase and the phase difference signal The radio frequency processing unit 602 is provided.

In summary, the baseband processing unit 601, the radio frequency processing unit 602, and the intermediate frequency processing unit 603 can be used to perform the same weighting or split replication on the first one of the plurality of signals to obtain a signal that is mapped to the same phase on the two ports; And performing different weighting or splitting phase shifting on the second signal of the plurality of signals to obtain the signal that is mapped to the phase difference between the two ports, and in actual application, determining which unit to implement according to actual needs Performing the same weighting or splitting on the first of the plurality of signals to obtain a signal that is mapped to the same phase on the two ports; and performing different weighting or splitting phase shifting on the second of the plurality of signals to obtain the mapping The function of the phase difference between the two ports is not specifically limited in the present invention.

The embodiment of the present invention provides a base station 60, which includes a baseband processing unit 601, a radio frequency processing unit 602, and an antenna array 40, which are sequentially connected, wherein the antenna array 40 includes a parallel dual-polarized antenna 401 for transmitting one signal. Each column of the dual-polarized antenna 401 includes two ports corresponding to two polarization directions, and the 双-column dual-polarized antenna is divided into a plurality of groups according to a continuous queue, and Μ is a natural number greater than or equal to 2, and Ν is 1 to Μ/2 Any of the natural numbers; the baseband processing unit 601 generates a plurality of signals, the radio frequency processing unit 602 maps the signals to the array dual-polarized antenna 401 of the antenna array 40, and transmits the signals through the antenna array 40; at the radio frequency processing unit 602 During the mapping process, when the signal is mapped to each column of the dual-polarized antenna of the even array, the signals of the two ports of each column of the dual-polarized antenna are mapped with the same phase; when the signal is mapped to the odd array For each column of dual-polarized antennas, the signals mapped by the two ports of each column of the dual-polarized antenna of the odd array are different in phase; or, when mapping the signals to each column of the even array, the dual polarization When the line, each column of the array even signal phase two dual-polarized antenna ports mapped difference disabilities; Gamma]; When mapping a signal to each column of dual-polarized antennas of an odd array, the signals mapped by the two ports of each column of the dual-polarized antenna of the odd array are the same; the signals mapped to the same phase on the two ports are The same signal is obtained by the same weighting or splitting, and is mapped to the phase difference between the two ports; the Γ signal is obtained by different weighting or splitting phase shift of the same signal, and the signal mapped to the two ports is baseband The processing unit 601 or the radio frequency processing unit 602 or the intermediate frequency processing unit 603 generates. In the adjacent dual-polarized antenna group, the signal phases in different polarization directions of each column of the dual-polarized antennas in one group are the same, and the signal phases in different polarization directions of each column of the dual-polarized antennas in the other group are different.相 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , Interference, avoiding the occurrence of the nulling effect, thus effectively improving the nature of the antenna system

Oh. A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can be referred to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical or otherwise.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment. In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

The above-described integrated unit implemented in the form of a software functional unit can be stored in a computer readable storage medium. The software functional unit described above is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, server, or network device, etc.) to perform portions of the steps of the various embodiments of the present invention. The foregoing storage medium includes: a U disk, a mobile hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a disk or an optical disk, and the like, which can store program codes. Medium.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced. The modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

claims

1. An antenna array, characterized in that it includes: M columns of dual-polarized antennas, used to transmit M signals, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions, the M columns Dual polarized antennas are equally divided into multiple groups according to consecutive N columns, M is a natural number greater than or equal to 2, and N is any natural number from 1 to M/2; where,

The two ports of each column of dual-polarized antennas in each odd-numbered group are coupled with signals with the same phase; the two ports of each column of dual-polarized antennas in each even-numbered group are coupled with signals with a phase difference of ± Γ; or,

The two ports of each column of dual-polarized antennas in each even-numbered group are coupled to signals with the same phase; the two ports of each column of dual-polarized antennas in each odd-numbered group are coupled to signals with a phase difference of ± Γ.

2. The antenna array according to claim 1, characterized in that, the N is 1, and,

The two ports of the dual-polarized antenna in each odd-numbered column are coupled with signals with the same phase; the two ports of the dual-polarized antenna in each even-numbered column are coupled with signals with a phase difference of ±Γ; or,

The two ports of the dual-polarized antenna in each even-numbered column couple signals with the same phase; the two ports of the dual-polarized antenna in each odd-numbered column couple signals with a phase difference ±Γ.

3. The antenna array according to claim 1 or 2, characterized in that, the antenna array includes two columns of dual-polarized antennas for transmitting a first signal and a second signal, and, the first column of dual-polarized antennas The first port and the second port of the dual-polarized antenna are both coupled to the first signal; the first port of the second column of dual-polarized antenna is coupled to the second signal, and the second port is coupled to the weighted second signal. , the phase difference between the weighted second signal and the second signal is ±; Γ; or,

The first port of the first column of dual-polarized antennas couples the first signal, the second port couples the weighted first signal, and the phase difference between the weighted first signal and the first signal is ±; Γ; both the first port and the second port of the second column of dual-polarized antennas couple the second signal.

4. The antenna array according to claim 1 or 2, characterized in that, the antenna array The line array includes four columns of dual-polarized antennas for transmitting the first signal, the second signal, the third signal and the fourth signal, and,

The first port and the second port of the first column of dual-polarized antennas are coupled to the first signal;

The first port of the second column of dual-polarized antennas couples the second signal, the second port couples the weighted second signal, and the phase difference between the weighted second signal and the second signal is Shi; Γ;

The first port of the fourth column of dual-polarized antennas couples the fourth signal, the second port couples the weighted fourth signal, and the phase difference between the weighted fourth signal and the fourth signal is Shi; Γ;

or,

The first port of the first column of dual-polarized antennas couples the first signal, the second port couples the weighted first signal, and the phase difference between the weighted first signal and the first signal is Shi; Γ;

The first port of the third column of dual-polarized antennas couples the third signal, the second port couples the weighted third signal, and the phase difference between the weighted third signal and the third signal is Shi; Γ;

The fourth signal is coupled to both the first port and the second port of the fourth column of dual-polarized antennas.

5. The antenna array according to claim 1, wherein the antenna array includes four columns of dual-polarized antennas for transmitting the first signal, the second signal, the third signal and the fourth signal, and,

The first port and the second port of the first column of dual-polarized antennas are coupled to the first signal; the first port and the second port of the second column of dual-polarized antennas are coupled to the second signal; The first port of the third column of dual-polarized antennas couples the third signal, and the second port The weighted third signal is coupled to the port, and the phase difference between the weighted third signal and the third signal is ±Γ; the first port of the fourth column dual-polarized antenna couples the fourth signal, the second port is coupled to the weighted fourth signal, and the phase difference between the weighted fourth signal and the fourth signal is ±; Γ;

or,

The first port of the first column of dual-polarized antennas couples the first signal, the second port couples the weighted first signal, and the phase difference between the weighted first signal and the first signal is ±Γ; the first port of the second column of dual-polarized antennas couples the second signal, the second port couples the weighted second signal, the weighted second signal and the second signal The first port and the second port of the third column of dual-polarized antennas are coupled to the third signal; the first port and the second port of the fourth column of dual-polarized antennas are coupled to the third signal. Four signals.

6. A signal mapping method, characterized in that it is used to map M signals to M columns of dual-polarized antennas of the antenna array, and each column of dual-polarized antennas includes two ports corresponding to two polarization directions, The M columns of dual-polarized antennas are equally divided into multiple groups according to consecutive N columns, M is a natural number greater than or equal to 2, and N is any natural number from 1 to M/2; the method includes,

Map each signal to an array of dual-polarized antennas, where,

When a signal is mapped to each column of dual-polarized antennas in an even-numbered group, the signals mapped by the two ports of each column of dual-polarized antennas in the even-numbered group have the same phase; when a signal is mapped to each column of dual-polarized antennas in an odd-numbered group. When the antenna is polarized, the phase difference of the signals mapped by the two ports of the dual-polarized antenna in each column of the odd-numbered group is ±; Γ; or,

When the signal is mapped to each column of dual-polarized antennas in the even-numbered group, the phase difference of the signals mapped by the two ports of the dual-polarized antenna in each column of the even-numbered group is ±Γ; when the signal is mapped to each column of the odd-numbered group In the case of dual-polarized antennas, the signals mapped by the two ports of each column of dual-polarized antennas in the odd-numbered group have the same phase.

7. The signal mapping method according to claim 6, wherein N is 1, and mapping each signal to a column of dual-polarized antennas includes:

When the signal is mapped to an even-numbered column dual-polarized antenna, the even-numbered column dual-polarized antenna The signals mapped by the two ports have the same phase; when the signal is mapped to the odd-numbered dual-polarized antenna, the phase difference of the signals mapped by the two ports of the odd-numbered dual-polarized antenna is ±Γ; or,

When the signal is mapped to the even-numbered dual-polarized antenna, the phase difference of the signals mapped by the two ports of the even-numbered dual-polarized antenna is ±; when the signal is mapped to the odd-numbered dual-polarized antenna, the odd-numbered column The signals mapped by the two ports of a dual-polarized antenna have the same phase.

8. The signal mapping method according to claim 6 or 7, characterized in that the antenna array includes two columns of dual-polarized antennas for transmitting the first signal and the second signal. For the first column of dual-polarized antennas, The antenna, mapping the first signal to the first column of dual-polarized antennas, includes: directly mapping the first signal to the first port and the second port of the first column of dual-polarized antennas; or, passing through the same The weighted first signal is mapped to the first port and the second port of the first column of dual-polarized antennas;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: directly mapping the second signal to the first port of the second column of dual-polarized antennas, and The weighted second signal is mapped to the second port of the second column of dual-polarized antennas, wherein the phase difference between the weighted second signal and the second signal is ±; or, The second signals after different weightings are respectively mapped to the first port and the second port of the second column of dual-polarization antennas, wherein the phase difference of the second signals after different weightings is ±; ^.

9. The signal mapping method according to claim 6 or 7, characterized in that the antenna array includes two columns of dual-polarized antennas for transmitting the first signal and the second signal. For the first column of dual-polarized antennas, The antenna, mapping the first signal to the first column of dual-polarized antennas, includes: directly mapping the first signal to the first port of the first column of dual-polarized antennas, and mapping the weighted first A signal is mapped to the second port of the first column of dual-polarized antennas, wherein the phase difference between the weighted first signal and the first signal is ±±; or, all the weighted first signals are The first signal is mapped to the first port and the second port of the first column of dual-polarized antennas, wherein the different weighted first signals are:

For the second column of dual-polarized antennas, map the second signal to the second column of dual-polarized antennas, The method includes: directly mapping the second signal to the first port and the second port of the second column of dual-polarized antennas; or, mapping the second signal with the same weight to the second column of dual-polarized antennas. First port and second port.

10. The signal mapping method according to claim 6 or 7, characterized in that the antenna array includes four columns of dual-polarized antennas for transmitting the first signal, the second signal, the third signal and the fourth signal. ,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: directly mapping the first signal to the first port and the second port of the first column of dual-polarized antennas. port; or, map the same weighted first signal to the first port and the second port of the first column of dual-polarized antennas;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: directly mapping the second signal to the first port of the second column of dual-polarized antennas, and The weighted second signal is mapped to the second port of the second column of dual-polarized antennas, wherein the phase difference between the weighted second signal and the second signal is ±; or, The second signals with different weights are respectively mapped to the first port and the second port of the second column of dual-polarized antennas, where the phase difference of the second signals with different weights is ±;

For the third column of dual-polarized antennas, mapping the third signal to the third column of dual-polarized antennas includes: directly mapping the third signal to the first port and the second port of the third column of dual-polarized antennas; or, Mapping the equally weighted third signal to the first port and the second port of the third column of dual-polarized antennas;

For the fourth column of dual-polarized antennas, mapping the fourth signal to the fourth column of dual-polarized antennas includes: directly mapping the fourth signal to the first port of the fourth column of dual-polarized antennas, and mapping the weighted The fourth signal is mapped to the second port of the fourth column of dual-polarized antennas, where the phase difference between the weighted fourth signal and the fourth signal is ±Γ; or, The fourth signals with different weights are respectively mapped to the first port and the second port of the fourth column of dual-polarized antennas, wherein the phases of the fourth signals with different weights differ by ±τ.

1 1. The signal mapping method according to claim 6 or 7, characterized in that, The antenna array includes four columns of dual-polarized antennas for transmitting a first signal, a second signal, a third signal and a fourth signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: directly mapping the first signal to the first port of the first column of dual-polarized antennas, and mapping the weighted The first signal is mapped to the second port of the first column of dual-polarized antennas, wherein the phase difference between the weighted first signal and the first signal is ±±; or, will go through different The weighted first signal is mapped to the first port and the second port of the first column of dual-polarized antennas, wherein the phase difference of the different weighted first signals is ±; Γ;

For the second column of dual-polarized antennas, mapping the second signal to the second column of dual-polarized antennas includes: directly mapping the second signal to the first port and the second port of the second column of dual-polarized antennas; or, Mapping the second signal with the same weight to the first port and the second port of the second column of dual-polarized antennas;

For the third column of dual-polarized antennas, mapping the third signal to the third column of dual-polarized antennas includes: directly mapping the third signal to the first port of the third column of dual-polarized antennas, and mapping the weighted The third signal is mapped to the second port of the third column of dual-polarized antennas, wherein the phase difference between the weighted third signal and the third signal is ±±; or, they will undergo different weightings. The third signal after is mapped to the first port and the second port of the third column of dual-polarized antennas, wherein the phase difference of the third signals after different weightings is ±; Γ;

For the fourth column of dual-polarized antennas, mapping the fourth signal to the fourth column of dual-polarized antennas includes: directly mapping the fourth signal to the first port and the second port of the fourth column of dual-polarized antennas; or, The fourth signal with the same weight is mapped to the first port and the second port of the fourth column of dual-polarized antennas.

12. The signal mapping method according to claim 6, wherein the antenna array includes four columns of dual-polarized antennas for transmitting the first signal, the second signal, the third signal and the fourth signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: directly mapping the first signal to the first port of the first column of dual-polarized antennas. and a second port; or, map the same weighted first signal to the first port and the second port of the first column of dual-polarized antennas;

13. The signal mapping method according to claim 6, wherein the antenna array includes four columns of dual-polarized antennas for transmitting the first signal, the second signal, the third signal and the fourth signal,

For the first column of dual-polarized antennas, mapping the first signal to the first column of dual-polarized antennas includes: directly mapping the first signal to the first port of the first column of dual-polarized antennas, and mapping the weighted The first signal is mapped to the second port of the first column of dual-polarized antennas, wherein the phase difference between the weighted first signal and the first signal is ±±; or, will go through different The weighted first signal is mapped to the first port and the second port of the first column of dual-polarized antennas, where the phases of the different weighted first signals are phase difference; Γ;

14. A base station, characterized in that it includes: a baseband processing unit, a radio frequency processing unit, and an antenna array connected in sequence. The antenna array includes M columns of dual-polarized antennas, and each column of dual-polarized antennas includes two corresponding polarized antennas. Two ports in the polarization direction, the M-column dual-polarized antennas are equally divided into multiple groups according to consecutive N-columns, M is a natural number greater than or equal to 2, and N is any natural number from 1 to M/2; where,

The baseband processing unit is used to generate M signals;

The radio frequency processing unit is used to map the M signals to the M columns of dual-polarized antennas of the antenna array, so as to transmit the M signals through the antenna array; wherein, when the signals are mapped to even groups When the dual-polarized antennas in each column of the even-numbered group are mapped, the signals mapped by the two ports of the dual-polarized antennas in each column of the even-numbered group are in the same phase; The phase difference between the signals mapped by the two ports of the dual-polarized antennas in each column of the group is ±; Γ; or,

When mapping signals to each column of dual-polarized antennas in an even group, each column of the even group The phase difference of the signals mapped by the two ports of the dual-polarized antenna is ±Γ; when the signal is mapped to each column of dual-polarized antennas in an odd-numbered group, the two ports mapped by the two ports of each column of dual-polarized antennas in the odd-numbered group The signals have the same phase.

15. The base station according to claim 14, characterized in that, the N is 1, and when the signal is mapped to the even-numbered dual-polarized antenna, the two ports of the even-numbered dual-polarized antenna are mapped The signal phases are the same; when the signal is mapped to the odd-numbered dual-polarized antenna, the phase difference of the signals mapped by the two ports of the odd-numbered dual-polarized antenna is ±Γ; or,

16. The base station according to claim 14 or 15, characterized in that, the signals mapped to the two ports with the same phase are obtained by the same signal through the same weight or split copy; the mapped to the two ports Signals with phase differences on the ports are obtained by subjecting the same signal to different weights or branch phase shifts.

17. The base station according to any one of claims 14 to 16, characterized in that the baseband processing unit is also used to:

Performing same weighting or split copy on the first signal among the plurality of signals to obtain the signal mapped to the same phase on the two ports;

Different weighting or branch phase shifting is performed on the second signal among the plurality of signals to obtain the signal mapped to the two ports with a phase difference of ± Γ.

18. The base station according to any one of claims 14 to 16, characterized in that the radio frequency processing unit is also used to:

Performing same weighting or branch copy on the first signal among the plurality of signals to obtain the signal mapped to the same phase on the two ports;

19. The base station according to any one of claims 14 to 16, characterized in that, the base station further includes: An intermediate frequency processing unit, configured to perform identical weighting or branch copy on the first signal among the plurality of signals to obtain the signal mapped to the same phase on the two ports; perform the same processing on the second signal among the plurality of signals. Different weighting or branch phase shifting is used to obtain the signals mapped to the two ports with a phase difference of ±; Γ; and the signals with the same phase and the signals with a phase difference of ±; Γ are provided to the radio frequency processing unit.