WO2016000266A1

WO2016000266A1 - Multi-polarization transmitting/receiving antenna, and transmitting/receiving apparatus, system and method

Info

Publication number: WO2016000266A1
Application number: PCT/CN2014/081680
Authority: WO
Inventors: 林伟; 王光健; 严茜
Original assignee: 华为技术有限公司
Priority date: 2014-07-04
Filing date: 2014-07-04
Publication date: 2016-01-07
Also published as: CN105993133A; CN105993133B

Abstract

Provided are a multi-polarization transmitting/receiving antenna, and a transmitting/receiving apparatus, system and method. A multi-polarization transmitting antenna comprises: M transmitting orthogonal antenna arrays, wherein each transmitting orthogonal antenna array comprises a pair of mutually polarized orthogonal dual polarization antennas, M being an integer greater than or equal to 2; and a transmitting mode and/or an antenna polarization direction of the M transmitting orthogonal antenna arrays being adjusted according to a condition number of a channel matrix fed back by a receiving end. While improving the multiplexing and diversity gain, the embodiments of the present invention lower the requirement on an inter-antenna distance and improve the reliability of transmission.

Description

Multi-polarized transmitting and receiving antenna, transmitting and receiving device, system and method

Embodiments of the present invention relate to communication technologies, and in particular, to a multi-polarity transmitting and receiving antenna, a transmitting and receiving apparatus, a system, and a method. Background technique

Key issues to be addressed in modern wireless communications: How to improve the spectrum utilization and transmission reliability of the system. Multiple-Input Multiple-Output (MIMO) is the mainstream technology of current wireless communication and is adopted by many standards, such as 802.11, 802.16, 802.15, etc.

MIMO technology uses multiple antennas on both the receiving end and the transmitting end to form a multi-antenna system, which can effectively increase communication capacity and improve communication quality. It can meet the requirements for high-capacity high-quality communication, effectively improve spectrum utilization, and alleviate the problem. The growing demand for spectrum resources.

Currently, the main applications of MIMO technology are space division multiplexing and space diversity. Space-division multiplexing can increase the information transmission rate by double the number of single-input single-output (SISO) systems without increasing the bandwidth, thereby greatly improving the spectrum utilization of the system; Spatial diversity can use the multiple transmission paths provided by multiple antennas at the transmitting or receiving end to transmit the same data to enhance the transmission reliability of the data.

The MIMO communication system increases the spatial freedom to the same level as the time freedom. It considers that space is the key factor determining the capacity of a wireless communication system, and polarization is one of the important characteristics of spatial freedom. Therefore, in order to further improve the space utilization efficiency of the system, the dual-polarization antenna technology has been widely adopted in modern wireless communication systems. In the traditional communication system, the base station side often uses the multi-antenna array with large spacing to achieve spatial diversity. When the spacing between the antennas is reduced, the coupling problem between the antennas becomes more and more serious, which restricts the performance of the system. . Unlike a spatial MIMO antenna, a multi-polarized antenna utilizes multiple antenna elements located at the same location, making full use of information of multiple field components of electromagnetic waves, greatly increasing spatial freedom in a finite space, and obtaining a similarity to a spatial MIMO antenna. Gain.

A multi-polarized antenna system of the prior art includes a plurality of transmitting antennas and a plurality of receiving antennas, although the polarization direction of the antennas can be adaptively adjusted according to channel conditions, but the transmitting antennas and connections The receiving antenna is a single-polarized antenna, and each transmitting antenna or receiving antenna requires a certain distance interval, the antenna space utilization efficiency is low, and only works in the multiplexing mode, and the reliability of signal transmission in a severely fading environment Poor. SUMMARY OF THE INVENTION Embodiments of the present invention provide a multi-polarity transmitting and receiving antenna, a transmitting and receiving apparatus, a system, and a method, which overcome the problem of low space utilization of an antenna in the prior art and poor reliability of signal transmission.

In a first aspect, an embodiment of the present invention provides a multi-polarity transmitting antenna, including:

M transmit orthogonal antenna groups, wherein each of the transmit orthogonal antenna groups includes a pair of mutually orthogonal orthogonal dual-polarized antennas; the M is an integer greater than or equal to 2;

The M transmit orthogonal antenna groups adjust the transmit mode and/or the antenna polarization direction according to the condition number of the channel matrix fed back by the receiving end.

With reference to the first aspect, in a first implementation manner of the first aspect, the M transmit orthogonal antenna groups adjust the transmission mode according to the condition number of the channel matrix fed back by the receiving end, including:

And when the number of conditions is less than a preset condition number threshold, adjusting the transmission mode to a multiplexing mode;

When the number of conditions is greater than a preset condition number threshold, the transmission mode is adjusted to a diversity mode.

With reference to the first implementation manner of the first aspect, in the second implementation manner of the first aspect, the adjusting the transmitting mode to the multiplexing mode includes:

Each of the transmit orthogonal antenna groups transmits a different data stream, and each of the dual orthogonal antennas of the transmit orthogonal antenna group transmits a different data stream.

In conjunction with the first implementation of the first aspect, in a third implementation manner of the first aspect, the adjusting the transmit mode to the diversity mode includes:

Each of the transmitting orthogonal antenna groups transmits the same data stream, and each of the dual orthogonal antennas transmitting the orthogonal antenna group transmits the same data stream; or

Each of the transmit orthogonal antenna groups transmits a different data stream, and each of the dual orthogonal antennas transmitting the orthogonal antenna group transmits the same data stream.

With reference to the first aspect, or the first to third implementation manners of the first aspect, in a fourth implementation manner of the first aspect, the M transmit orthogonal antenna groups are according to a channel matrix fed back by the receiving end The number of conditions adjusts the polarization direction of the antenna, including:

When the number of conditions is greater than a preset condition number threshold, the polarization directions of the M transmit orthogonal antenna groups are adjusted until the number of conditions fed back by the receiving end is less than a preset condition number threshold; The direction includes an angle value between the M transmit orthogonal antenna groups and a horizontal plane.

In a second aspect, an embodiment of the present invention provides a multi-polarized receiving antenna, including:

N receiving orthogonal antenna groups, wherein each of the receiving orthogonal antenna groups includes a pair of mutually polarized orthogonal dual-polarized antennas; the N is greater than or equal to M; and the M is a transmitting orthogonal antenna of the transmitting end Number of groups;

The N receiving orthogonal antenna groups adjust the receiving mode and/or the antenna polarization direction according to the condition number of the channel matrix; the receiving mode matches the transmitting mode of the transmitting end.

With reference to the second aspect, in a first implementation manner of the second aspect, the N receiving orthogonal antenna groups adjust the receiving mode according to the condition number of the channel matrix, including:

When the number of conditions is less than a preset condition number threshold, adjusting the receiving mode to a multiplexing mode;

When the number of conditions is greater than a preset condition number threshold, the receiving mode is adjusted to a diversity mode.

With reference to the first implementation manner of the second aspect, in the second implementation manner of the second aspect, the adjusting the receiving mode to the multiplexing mode includes:

Each of the received orthogonal antenna groups receives a different data stream, and each of the dual-polarized antennas that receive the orthogonal antenna group receives a different data stream.

With reference to the first implementation of the second aspect, in a third implementation manner of the second aspect, the adjusting the receiving mode to the diversity mode includes:

Each of the receiving orthogonal antenna groups receives the same data stream, and each of the dual-polarized antennas of the receiving orthogonal antenna group receives the same data stream; or

Each of the received orthogonal antenna groups receives a different data stream, and each of the dual-polarized antennas receiving the orthogonal antenna group receives the same data stream.

With reference to the second aspect, or the first to the third implementation manner of the second aspect, in the fourth implementation manner of the second aspect, the N receiving orthogonal antenna groups adjust the antenna according to the condition number of the channel matrix Polarization direction, including:

And when the number of conditions is greater than a preset condition number threshold, adjusting a polarization direction of the N receiving orthogonal antenna groups until the condition number is less than a preset condition number threshold; The angle between the N receiving orthogonal antenna groups and the horizontal plane.

In a third aspect, an embodiment of the present invention provides a multi-polarity transmitting apparatus, including:

a transmitting signal processing unit, a plurality of radio frequency units, and the multi-polarized transmitting antenna according to any one of the first aspect; wherein the transmitting signal processing unit is configured to perform a transmitting baseband processing on the transmitted signal; The radio frequency unit is respectively connected to the transmitting signal processing unit, and configured to complete conversion of the transmitting signal from baseband to radio frequency; the M transmitting orthogonal antenna groups of the multi-polarized transmitting antenna respectively correspond to the M radio frequency units Connected to transmit the transmitted signal.

In a fourth aspect, an embodiment of the present invention provides a multi-polarization receiving apparatus, including:

a receiving signal processing unit, a plurality of radio frequency units, and the multi-polarized receiving antenna according to any one of the second aspect; wherein the receiving signal processing unit is configured to perform receiving baseband processing on the received signal; The radio frequency unit is respectively connected to the receiving signal processing unit, and configured to complete conversion of the received signal from radio frequency to baseband; and the N receiving orthogonal antenna groups of the multi-polarized receiving antenna respectively correspond to the N radio frequency units Connection, for receiving a transmission signal transmitted by the transmitting end.

In a fifth aspect, an embodiment of the present invention provides a multi-polarization transmission system, including:

A transmitting device according to the third aspect and the receiving device according to the fourth aspect.

In a sixth aspect, an embodiment of the present invention provides a method for transmitting a multi-polarized transmit antenna, where the multi-polarized transmit antenna includes: M transmit orthogonal antenna groups, where each of the transmit orthogonal antenna groups includes a a dual-polarized antenna that is orthogonal to each other; the M is an integer greater than or equal to 2; the method includes:

Adjusting a transmission mode and/or an antenna polarization direction of the M transmit orthogonal antenna groups according to a condition number of a channel matrix fed back by the receiving end;

A transmit signal is transmitted through the multi-polarized transmit antenna.

With reference to the sixth aspect, in a first implementation manner of the sixth aspect, the adjusting a transmission mode of the M transmit orthogonal antenna groups according to the condition number of the channel matrix fed back by the receiving end includes:

With reference to the first implementation manner of the sixth aspect, in the second implementation manner of the sixth aspect, the adjusting the transmitting mode to the multiplexing mode includes:

Each of the transmit orthogonal antenna groups transmits a different data stream, each of the transmit orthogonal antenna groups The dual polarized antenna transmits a different data stream.

With reference to the first implementation manner of the sixth aspect, in the third implementation manner of the sixth aspect, the adjusting the transmitting mode to the diversity mode includes:

With reference to the sixth aspect, or the first to the third implementation manner of the sixth aspect, in the fourth implementation manner of the sixth aspect, the M number is adjusted according to a condition number of a channel matrix fed back by the receiving end The polarization direction of the antenna transmitting the orthogonal antenna group, including:

According to a seventh aspect, an embodiment of the present invention provides a method for receiving a multi-polarized receiving antenna, where the multi-polarized receiving antenna includes: N receiving orthogonal antenna groups, where each of the receiving orthogonal antenna groups includes a a dual-polarized antenna orthogonal to each other; the N is greater than or equal to M; the M is a number of transmitting orthogonal antenna groups at the transmitting end;

The method includes:

Receiving a transmission signal transmitted by the transmitting end;

And adjusting a receiving mode and/or an antenna polarization direction of the N receiving orthogonal antenna groups according to a condition number of the channel matrix, where the receiving mode matches a transmitting mode of the transmitting end.

With reference to the seventh aspect, in a first implementation manner of the seventh aspect, the adjusting a receiving mode of the N receiving orthogonal antenna groups according to a condition number of a channel matrix includes:

With reference to the first implementation manner of the seventh aspect, in the second implementation manner of the seventh aspect, the adjusting the receiving mode to the multiplexing mode includes:

Each of the received orthogonal antenna groups receives a different data stream, and each of the dual-polarized antennas that receive the orthogonal antenna group receives a different data stream. With reference to the first implementation manner of the seventh aspect, in the third implementation manner of the seventh aspect, the adjusting the receiving mode to the diversity mode includes:

With reference to the seventh aspect, or the first to the third implementation manner of the seventh aspect, in a fourth implementation manner of the seventh aspect, the adjusting the N receiving orthogonal antennas according to a condition number of a channel matrix The antenna polarization direction of the group, including:

And when the number of conditions is greater than a preset condition number threshold, adjusting a polarization direction of the N receiving orthogonal antenna groups until the condition number is less than a preset condition number threshold; the direction includes the The angle between the N receiving orthogonal antenna groups and the horizontal plane.

The multi-polarization transmitting and receiving antenna, the transmitting and receiving device, the system and the method, the multi-polarized transmitting antenna, comprising: M transmitting orthogonal antenna groups, wherein each of the transmitting orthogonal antenna groups includes a pair of mutual a polarization-orthogonal dual-polarized antenna; the M is an integer greater than or equal to 2; the M transmit orthogonal antenna groups adjust a transmission mode and/or an antenna polarization direction according to a condition number of a channel matrix fed back by the receiving end; The multi-polarized receiving antenna includes: N receiving orthogonal antenna groups, wherein each of the receiving orthogonal antenna groups includes a pair of mutually polarized orthogonal dual-polarized antennas; the N is greater than or equal to M; The N receiving orthogonal antenna groups adjust the receiving mode and/or the antenna polarization direction according to the condition number of the channel matrix, and the receiving mode matches the transmitting mode of the transmitting end, and utilizes multiple polarized antennas to more fully utilize The polarization isolation between the antennas reduces the inter-antenna distance requirements while improving the multiplexing and diversity gain of the transmission system. Each orthogonal antenna group can be feedbackd according to the receiving end. Adaptively rotating the channel information to optimize the transmission system, the channel matrix, to improve the reliability of the transmission system. Moreover, the switching between the multiplexing mode and the diversity mode can be performed, so that in the case of poor channel conditions of the system, the system can be effectively switched to the corresponding transmission mode, and the reliability of the system transmission is improved, and the antenna in the prior art is solved. The problem of low space utilization and poor signal transmission reliability. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below, obviously, The drawings in the above description are some embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any inventive labor.

1 is a schematic structural view of a multi-polarized transmitting antenna of the present invention;

2 is a schematic diagram of a transmitting orthogonal antenna group of a multi-polarized transmitting antenna according to the present invention;

3 is a schematic structural view of a multi-polarized receiving antenna of the present invention;

3A is a schematic diagram of a receiving orthogonal antenna group of a multi-polarized receiving antenna according to the present invention;

4 is a schematic structural view of a first embodiment of a multi-polarization transmitting device according to the present invention;

FIG. 5 is a schematic structural diagram of Embodiment 1 of a multi-polarization receiving apparatus according to the present invention; FIG.

6 is a schematic structural diagram 1 of an embodiment of a multi-polarization transmission system according to the present invention;

6A is a schematic structural view 2 of an embodiment of a multi-polarization transmission system according to the present invention;

7 is a flow chart of an embodiment of a method for transmitting a multi-polarized transmit antenna of the present invention;

FIG. 8 is a flowchart of an embodiment of a method for receiving a multi-polarized receiving antenna according to the present invention. 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 a partial embodiment of the invention, and not all of the 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.

1 is a schematic structural view of a multi-polarized transmitting antenna of the present invention, and FIG. 2 is a schematic diagram of a transmitting orthogonal antenna group of the multi-polarized transmitting antenna of the present invention. The solution of this embodiment achieves maximum transmission quality of the multi-polarized antenna transmission system. As shown in FIG. 1, the multi-polarized transmitting antenna 10 of this embodiment may include:

M transmit orthogonal antenna groups 101, wherein each of the transmit orthogonal antenna groups includes a pair of mutually polarized orthogonal dual-polarized antennas; the M is an integer greater than or equal to 2;

Specifically, as shown in FIG. 1 and FIG. 2, each of the transmitting orthogonal antenna groups is composed of a pair of mutually polarized orthogonal dual-polarized antennas, and the angle between the M transmitting orthogonal antenna groups and the horizontal plane is respectively i^c. ₂ , . . . , a _M } _o The angle between the transmitting orthogonal antenna group and the horizontal plane at the transmitting end can be along with the feedback channel The change of the condition number of the feedback channel matrix is adaptively adjusted to achieve the adjustment of the polarization direction to improve the communication reliability of the system. At the same time, the transmission mode can be adaptively adjusted according to the change of the condition number of the channel matrix fed back by the feedback channel, for example, adjusted to the multiplexing mode or the diversity mode.

The transmit mode and antenna polarization can be adjusted simultaneously or separately.

The above condition number is calculated by the receiving end according to the channel matrix of the transmission channel. Hypothetical microwave transmission system

Wherein, the channel fading coefficient between the transmitting end antenna and the receiving end antenna is represented, and the Cros-Polarization Discrimination (XPD) is shown between the transmitting end antenna and the receiving end antenna ^ζ ', the larger the value It indicates that the polarization leakage between the transmitting end antenna and the receiving end antenna is more serious, and N represents the number of receiving orthogonal antenna groups at the receiving end, and N is greater than or equal to M. The channel matrix of the transmission system is determined by the sum. The channel matrix can transmit a known training sequence to the receiving end through the transmitting end, and the receiving end estimates the channel matrix H according to the known training sequence.

The receiving end can calculate the condition number of the channel matrix according to the channel matrix H, and the specific calculation formula is as follows:

Det(H ^H H - λ!) ^ 0 where Det(.) is the determinant value of the matrix, I is the all-zero square matrix, and the value calculated according to the equation is the eigenvalue of the matrix, A has M Value, the condition number of the matrix is defined as follows: Condition number = A(max) IA(min)

Where l(m _ax ) represents the maximum of the M eigenvalues, L(min) represents the minimum of the M eigenvalues, and the smaller the conditional value (closer to 1), the better the channel condition, the system is available Better transmission quality.

As channel scattering and weather (rain, snow, fog) continue to change, the XPD value between the antennas will change continuously, resulting in unstable performance of the multi-polarized antenna system. At this time, the transmission mode should be adaptively switched. And / or antenna polarization direction to improve transmission reliability, while the receiver is also adaptive to make corresponding adjustments.

The above adjusts the transmission mode and/or the polarization direction of the antenna according to the condition number fed back by the receiving end, for example When the number of conditions is superior, the M transmit orthogonal antenna groups may remain as they are; when the number of conditions increases, the M transmit orthogonal antenna groups may adaptively adjust the transmit mode according to the condition number and/or Antenna polarization direction until the channel matrix condition number reaches a better value. For example, the transmission mode can be adjusted to the diversity mode and/or the antenna polarization direction can be adjusted, that is, the M transmit orthogonal antenna groups shown in FIG. 2 are adjusted. The angle between the horizontal planes.

Optionally, the M transmit orthogonal antenna groups adjust the transmit mode according to the condition number of the channel matrix fed back by the receiving end, including:

Specifically, when the condition number of the channel matrix is less than the condition number threshold, the channel condition of the transmission system is in a good state, and the transmission system can work in the multiplexing mode, that is, each transmitting orthogonal antenna group at the transmitting end can be independently transmitted. data flow. At this time, the receiving end of the system can perform multiplexing processing according to the transmitting end accordingly.

When the condition number of the channel matrix is greater than the condition number threshold, the channel condition of the transmission system is poor at this time, so the system can work in the diversity mode, that is, different transmit orthogonal antenna groups at the transmitting end can transmit the same data stream to generate diversity gain. . At this time, the receiving end of the system can perform diversity processing according to the transmitting end accordingly.

Optionally, adjusting the transmission mode to a multiplexing mode includes:

Specifically, in the multiplexing mode, each transmit orthogonal antenna group transmits an independent data stream, and a pair of mutually orthogonal dual-polarized antennas in each transmit orthogonal antenna group can also transmit mutually independent data streams.

Optionally, the adjusting the transmission mode to a diversity mode includes:

Specifically, in the diversity mode, the number of data streams transmitted by different antennas can be flexibly selected, for example, each A pair of orthogonal dual-polarized antennas in a transmit orthogonal antenna group may selectively transmit the same data stream, and different transmit orthogonal antenna groups may flexibly select to transmit the same data stream or independent data stream according to channel conditions. In this case, the receiving end can flexibly make the receiving end processing adjustment according to the adaptation of the transmitting end.

Optionally, the M transmit orthogonal antenna groups adjust the antenna polarization direction according to the condition number of the channel matrix fed back by the receiving end, including:

Specifically, as shown in FIG. 2, when the condition number is greater than a preset condition number threshold, each transmit orthogonal antenna group may be rotated, that is, the angle between each transmitted orthogonal antenna group and the horizontal plane is changed, thereby completing the antenna. The polarization direction is adjusted until the condition number of the channel matrix reaches a superior value.

In this embodiment, the multi-polarized transmit antenna includes: M transmit orthogonal antenna groups, where each of the transmit orthogonal antenna groups includes a pair of mutually polarized orthogonal dual-polarized antennas; An integer equal to 2; the M transmit orthogonal antenna groups adjust the transmission mode and/or the antenna polarization direction according to the condition number of the channel matrix fed back by the receiving end, and utilize multiple polarized antennas to more fully utilize the antennas The polarization isolation, so as to effectively improve the multiplexing and diversity gain of the transmission system while reducing the distance between the antennas, each orthogonal antenna group can be adaptively rotated according to the channel information fed back by the receiving end, thereby optimizing the transmission system. Channel matrix to improve the reliability of system transmission. Moreover, the switching between the multiplexing mode and the diversity mode can be performed, so that in the case of poor channel conditions of the system, the system can be effectively switched to the corresponding transmission mode, and the reliability of the system transmission is improved, and the antenna in the prior art is solved. The problem of low space utilization and poor signal transmission reliability.

3 is a schematic structural view of a multi-polarized receiving antenna of the present invention, and FIG. 3A is a schematic diagram of a receiving orthogonal antenna group of the multi-polarized receiving antenna of the present invention. The solution of this embodiment maximizes the transmission quality of the microwave transmission system. As shown in FIG. 3, the multi-polarized receiving antenna of this embodiment may include: N receiving orthogonal antenna groups, where each of the receiving orthogonal antenna groups includes a pair of mutually polarized orthogonal dual-polarized antennas The N is greater than or equal to M; the M is the number of transmitting orthogonal antenna groups at the transmitting end;

Specifically, as shown in FIG. 3 and FIG. 3A, each receiving orthogonal antenna group is composed of a pair of mutually polarized orthogonal dual-polarized antennas, and the angle between the N receiving orthogonal antenna groups and the horizontal plane is respectively n " The angle between the receiving orthogonal antenna group and the horizontal plane at the receiving end can be adaptively adjusted according to the change of the condition number of the channel matrix, so as to achieve the adjustment of the polarization direction to improve the communication reliability of the system. The change of the condition number of the matrix is adaptively adjusted to the receiving mode, such as adjusting to the multiplexing mode or the diversity mode, and the receiving mode is matched with the transmitting mode of the transmitting end, that is, the receiving mode is the multiplexing mode, and the receiving mode is also the multiplexing mode, transmitting When the mode is diversity mode, the receiving mode is also the diversity mode.

The calculation of the above condition number is as described in the embodiment of the multi-polarized transmit antenna, and will not be described here.

The above N is greater than or equal to M, that is, the number of receiving orthogonal antenna groups at the receiving end is greater than or equal to the number of transmitting orthogonal antenna groups at the transmitting end.

Optionally, the N receiving orthogonal antenna groups adjust the receiving mode according to the condition number of the channel matrix, including:

Optionally, adjusting the receiving mode to the multiplexing mode includes:

Optionally, adjusting the receiving mode to a diversity mode includes:

Specifically, when the condition number of the channel matrix is less than the condition number threshold, the channel condition of the transmission system is in a good state, and the transmission system can work in the multiplexing mode, that is, each transmitting orthogonal antenna group at the transmitting end can be independently transmitted. data flow. At this time, the receiving end of the system can perform multiplexing processing according to the transmitting end, that is, the receiving mode of the receiving end is also the multiplexing mode.

When the condition number of the channel matrix is greater than the condition number threshold, the channel condition of the transmission system is poor at this time, so the system can work in the diversity mode, that is, the different transmitting orthogonal antenna groups at the transmitting end can transmit the phase. The same data stream to produce diversity gain. At this time, the receiving end of the system can perform diversity processing according to the transmitting end, that is, the receiving mode of the receiving end is also the diversity mode.

In the multiplexing mode, each transmit orthogonal antenna group transmits an independent data stream, and a pair of mutually orthogonal dual-polarized antennas in each transmit orthogonal antenna group can also transmit mutually independent data streams, correspondingly, Each of the receiving orthogonal antenna groups receives a different data stream, and each pair of mutually orthogonal dual-polarized antennas of the receiving orthogonal antenna group also receives a different data stream.

In the diversity mode, the number of data streams transmitted by different antennas can be flexibly selected. For example, a pair of orthogonal dual-polarized antennas in each transmit orthogonal antenna group can selectively transmit the same data stream, and different transmit orthogonal antenna groups can be The channel conditions are flexibly selected to transmit the same data stream or separate data streams. Correspondingly, a pair of mutually orthogonal dual-polarized antennas of each of the receiving orthogonal antenna groups receive the same data stream, and different receiving orthogonalities The antenna group receives the same or separate data streams.

Optionally, the N receiving orthogonal antenna groups adjust the polarization direction of the antenna according to the condition number of the channel matrix, including:

Specifically, as shown in FIG. 2, when the condition number is greater than a preset condition number threshold, each receiving orthogonal antenna group may be rotated simultaneously with the transmitting orthogonal antenna group, that is, changing each transmitting orthogonal antenna group and receiving positive The angle between the antenna group and the horizontal plane is adjusted to complete the adjustment of the polarization direction of the antenna until the condition number of the channel matrix reaches a superior value.

In this embodiment, the multi-polarization receiving antenna includes: N receiving orthogonal antenna groups, where each of the receiving orthogonal antenna groups includes a pair of mutually polarized orthogonal dual-polarized antennas; M; the N receiving orthogonal antenna groups adjust the receiving mode and/or the antenna polarization direction according to the condition number of the channel matrix, and utilize multiple polarized antennas to more fully utilize polarization isolation between the antennas, thereby Effectively improve the multiplexing and diversity gain of the system while reducing the distance between the antennas. Each orthogonal antenna group can be adaptively rotated according to the channel information fed back by the receiving end, thereby optimizing the channel matrix of the transmission system to improve system transmission. reliability. Moreover, the switching between the multiplexing mode and the diversity mode can be performed, so that in the case of poor channel conditions of the system, the system can be effectively switched to the corresponding transmission mode, and the reliability of the system transmission is improved, and the antenna in the prior art is solved. The problem of low space utilization and poor signal transmission reliability.

4 is a schematic structural diagram of Embodiment 1 of a multi-polarization transmitting apparatus according to the present invention, as shown in FIG. The transmitting device 40 of this embodiment may include:

The multi-polarization transmitting antenna 10 of any one of the transmitting signal processing unit 401, the M radio frequency unit 402, and the multi-polarization transmitting antenna embodiment; wherein the transmitting signal processing unit is configured to perform a baseband processing on the transmitting end of the transmitting signal, For example, modulation, channel coding, and the like; the M radio frequency units are respectively connected to the transmission signal processing unit, and used to complete conversion of the transmission signal from baseband to radio frequency, and each radio frequency unit includes, for example, a spectrum shifting (upconversion) unit. An amplifier, an RF filter, or the like; the M transmit orthogonal antenna groups of the multi-polarized transmit antenna are respectively connected to the M radio frequency units for transmitting the transmit signal.

The implementation principle and technical effects of the transmitting apparatus of this embodiment are similar to those of the embodiment of the multi-polarized transmitting antenna shown in FIG. 1, and details are not described herein again.

FIG. 5 is a schematic structural diagram of Embodiment 1 of the multi-polarization receiving apparatus of the present invention. As shown in FIG. 5, the receiving apparatus 50 of this embodiment may include:

a received signal processing unit 501, N radio frequency units 502, and a multi-polarized receiving antenna 30 as described in any of the multi-polarized receiving antenna embodiments; wherein the received signal processing unit is configured to perform receiving end baseband processing on the received signal For example, demodulation, channel decoding, etc.; the N radio frequency units are respectively connected to the receiving signal processing unit, and used to complete the conversion of the received signal from radio frequency to baseband, and the processing flow corresponds to the radio frequency unit of the transmitting end. The unit may also include a spectrum shifting unit (downconversion), an amplifier, a radio frequency filter, and the like; the N receiving orthogonal antenna groups of the multi-polarized receiving antenna are respectively connected to the N radio frequency units, and are used for receiving and transmitting. The transmitted signal transmitted by the terminal.

The implementation principle and technical effects of the receiving apparatus of this embodiment are similar to those of the embodiment of the multi-polarized receiving antenna shown in FIG. 3, and details are not described herein again.

6 is a schematic structural diagram 1 of an embodiment of a multi-polarization transmission system according to the present invention, and FIG. 6A is a schematic structural diagram 2 of an embodiment of a multi-polarization transmission system according to the present invention. As shown in FIG. 6, the system of the present embodiment includes: a transmitting device 40 and a receiving device 50, wherein the transmitting device can adopt the structure of the device embodiment of FIG. 4, and the receiving device can adopt the structure of the device embodiment of FIG. 5, and the implementation principle thereof Similar to the technical effect, it will not be described here.

The system of the present embodiment can enable the microwave or millimeter wave communication system. For a relatively complex and time-varying channel, the system of the embodiment can be applied to improve the communication quality. The system of the embodiment can improve the adaptability of the system to environmental changes. This ensures that the system is always transmitting in a relatively optimal manner. As shown in FIG. 6A, for a 4x4 multi-polarized microwave transmission system, there are two orthogonal antenna groups at the transmitting end and the receiving end, wherein each orthogonal antenna group includes a pair of mutually orthogonally polarized antennas. At this time, M=2 and N=2. When the system polarization is initialized, consider setting ⁰ ^ ⁼ ^ ⁼ Α ⁼ Α ^{= 45ΰ} .

As follows:

When the condition number of the system channel matrix is smaller than the set condition number threshold ^A ( ^Thr ), the channel condition is good at this time, and the system can work in the multiplexing mode, that is, each transmitting orthogonal antenna group at the transmitting end can separately send independent data streams. . At this point, the system can support the simultaneous transmission of four independent data streams. At the same time of multiplexing mode transmission, the system's transmitting orthogonal antenna group and receiving orthogonal antenna group can perform adaptive polarization direction adjustment, thereby further optimizing the performance of the system.

When the condition number of the system channel matrix is greater than the set condition number threshold ^ ¹¹ ""), the channel condition is poor at this time. Especially when there is rain or snow or fog in the environment, the polarization isolation between the transmitting orthogonal antenna groups will be seriously deteriorated. In this case, the system can be adaptively converted to diversity mode. At this time, a pair of orthogonal dual-polarized antennas in the transmitting orthogonal antenna group 1 can transmit the same data stream to achieve diversity gain, and a pair of orthogonal dual-polarized antennas in the transmitting orthogonal antenna group 2 can transmit the same The data stream, and the data stream transmitted by the data stream and the transmitting orthogonal antenna group 1 may be the same or different depending on the channel condition (condition number).

FIG. 7 is a flowchart of an embodiment of a method for transmitting a multi-polarized transmit antenna according to the present invention. The multi-polarized transmit antenna of this embodiment includes: M transmit orthogonal antenna groups, where each of the transmit orthogonal antenna groups includes A pair of mutually polarized orthogonal dual-polarized antennas; the M is an integer greater than or equal to 2; as shown in FIG. 7, the method of this embodiment includes:

Step 701: Adjust a transmission mode and/or an antenna polarization direction of the M transmit orthogonal antenna groups according to condition numbers of the channel matrix fed back by the receiving end.

Step 702: Send a transmit signal through the multi-polarized transmit antenna.

Optionally, adjusting the transmission modes of the M transmit orthogonal antenna groups according to the condition number of the channel matrix fed back by the receiving end, including:

When the number of conditions is greater than a preset condition number threshold, the transmission mode is adjusted to a diversity mode. Optionally, adjusting the transmission mode to a multiplexing mode includes:

Optionally, adjusting the transmission mode to a diversity mode includes:

Optionally, adjusting the polarization direction of the antennas of the M transmit orthogonal antenna groups according to the condition number of the channel matrix fed back by the receiving end, including:

The technical solution of the present embodiment can be implemented by using the multi-polarized transmitting antenna shown in FIG. 1 , and the implementation principle and technical effects are similar, and details are not described herein again.

FIG. 8 is a flowchart of an embodiment of a method for receiving a multi-polarized receiving antenna according to the present invention. The multi-polarized receiving antenna of this embodiment includes: N receiving orthogonal antenna groups, where each of the receiving orthogonal antenna groups includes A pair of mutually orthogonally polarized dual-polarized antennas; the N is greater than or equal to M; the M is the number of transmitting orthogonal antenna groups at the transmitting end; as shown in FIG. 8, the method in this embodiment includes:

Step 801: Receive a transmit signal transmitted by a transmitting end.

Step 802: Adjust a receiving mode and/or an antenna polarization direction of the N receiving orthogonal antenna groups according to a condition number of the channel matrix, where the receiving mode matches a transmitting mode of the transmitting end.

Optionally, adjusting the receiving modes of the N receiving orthogonal antenna groups according to the condition number of the channel matrix, including:

Optionally, adjusting the receiving mode to the multiplexing mode includes:

Each of the received orthogonal antenna groups receives a different data stream, and each of the dual-polarized antennas that receive the orthogonal antenna group receives a different data stream. Optionally, adjusting the receiving mode to a diversity mode includes:

Optionally, adjusting an antenna polarization direction of the N receiving orthogonal antenna groups according to a condition number of the channel matrix, including:

The method of the present embodiment can be implemented by using the multi-polarized receiving antenna shown in FIG. 3, and the implementation principle and technical effects are similar, and details are not described herein again.

One of ordinary skill in the art will appreciate that all or a portion of the steps of implementing the various method embodiments described above can be accomplished by hardware associated with the program instructions. The aforementioned program can be stored in a computer readable storage medium. The program, when executed, performs the steps including the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

It should be noted that the above embodiments are merely illustrative of 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, those of ordinary skill in the art The technical solutions described in the foregoing embodiments may be modified, or some or all of the technical features may be equivalently replaced; and the modifications or substitutions do not deviate from the technical solutions of the embodiments of the present invention. range.

Claims

Claim

A multi-polarized transmitting antenna, comprising:

The transmitting antenna according to claim 1, wherein the M transmitting orthogonal antenna groups adjust the transmitting mode according to the condition number of the channel matrix fed back by the receiving end, including:

The transmitting antenna according to claim 2, wherein the adjusting the transmission mode to a multiplexing mode comprises:

The transmitting antenna according to claim 2, wherein the adjusting the transmitting mode to a diversity mode comprises:

The transmitting antenna according to any one of claims 1 to 4, wherein the M transmitting orthogonal antenna groups adjust the polarization direction of the antenna according to the condition number of the channel matrix fed back by the receiving end, and the method includes:

6. A multi-polarized receiving antenna, comprising:

N receiving orthogonal antenna groups, wherein each of the receiving orthogonal antenna groups includes a pair of mutual poles Orthogonal dual-polarized antenna; the N is greater than or equal to M; the M is the number of transmitting orthogonal antenna groups at the transmitting end;

The receiving antenna according to claim 6, wherein the N receiving orthogonal antenna groups adjust the receiving mode according to the condition number of the channel matrix, including:

The receiving antenna according to claim 7, wherein the adjusting the receiving mode to the multiplexing mode comprises:

The receiving antenna according to claim 7, wherein the adjusting the receiving mode to a diversity mode comprises:

The receiving antenna according to any one of claims 6-9, wherein the N receiving orthogonal antenna groups adjust the antenna polarization direction according to the condition number of the channel matrix, including:

11. A multi-polarity transmitting device, comprising:

a transmitting signal processing unit, a plurality of radio frequency units, and the multi-polarized transmitting antenna according to any one of claims 1 to 5; wherein the transmitting signal processing unit is configured to perform a transmitting baseband processing on the transmitted signal; The radio frequency units are respectively connected to the transmitting signal processing unit, and configured to complete conversion of the transmitting signal from baseband to radio frequency; the M transmitting orthogonal antenna groups of the multi-polarized transmitting antenna and the M radio frequency units respectively Corresponding connection, for transmitting the transmitting signal.

12. A multi-polarization receiving device, comprising:

a receiving signal processing unit, N radio frequency units, and the multi-polarized receiving antenna according to any one of claims 6 to 10; wherein the receiving signal processing unit is configured to perform receiving end baseband processing on the received signal; The radio frequency units are respectively connected to the receiving signal processing unit, and configured to complete conversion of the received signal from radio frequency to baseband; and the N receiving orthogonal antenna groups of the multi-polarized receiving antenna and the N radio frequency units respectively Corresponding connection, for receiving a transmission signal transmitted by the transmitting end.

13. A multi-polarization transmission system, comprising:

A transmitting device according to claim 11 and a receiving device according to claim 12.

14. A method for transmitting a multi-polarized transmit antenna, the multi-polarized transmit antenna comprising: M transmit orthogonal antenna groups, wherein each of the transmit orthogonal antenna groups includes a pair of mutually opposite poles Orthogonal dual-polarized antenna; the M is an integer greater than or equal to 2;

The method includes:

A transmit signal is transmitted through the multi-polarized transmit antenna.

The method according to claim 14, wherein the adjusting the transmission mode of the M transmit orthogonal antenna groups according to the condition number of the channel matrix fed back by the receiving end comprises:

The method according to claim 15, wherein the adjusting the transmission mode to a multiplexing mode comprises:

The method according to claim 15, wherein the adjusting the transmission mode to a diversity mode comprises:

The method according to any one of claims 14-17, wherein the adjusting the polarization direction of the antennas of the M transmit orthogonal antenna groups according to the condition number of the channel matrix fed back by the receiving end comprises:

A receiving method for a multi-polarized receiving antenna, wherein: the multi-polarized receiving antenna comprises: N receiving orthogonal antenna groups, wherein each of the receiving orthogonal antenna groups includes a pair of mutual poles Orthogonal dual-polarized antenna; the N is greater than or equal to M; the M is the number of transmitting orthogonal antenna groups at the transmitting end;

The method includes:

Receiving a transmission signal transmitted by the transmitting end;

The method according to claim 19, wherein the adjusting the receiving mode of the N receiving orthogonal antenna groups according to the number of conditions of the channel matrix comprises:

The method according to claim 20, wherein the adjusting the receiving mode to a multiplexing mode comprises:

The method according to claim 20, wherein the adjusting the receiving mode to a diversity mode comprises:

The method according to any one of claims 19 to 22, wherein the The condition number of the track matrix adjusts the polarization direction of the antennas of the N receiving orthogonal antenna groups, including: when the number of conditions is greater than a preset condition number threshold, the polarization of the N receiving orthogonal antenna groups The direction is adjusted until the condition number is less than a preset condition number threshold; the direction includes an angle value between the N receiving orthogonal antenna groups and a horizontal plane.