WO2013166819A1

WO2013166819A1 - Method and device for virtual antenna mapping

Info

Publication number: WO2013166819A1
Application number: PCT/CN2012/085113
Authority: WO
Inventors: 董伟
Original assignee: 华为技术有限公司
Priority date: 2012-05-07
Filing date: 2012-11-23
Publication date: 2013-11-14
Also published as: CN103391128A; CN103391128B

Abstract

A method and device for virtual antenna mapping are provided by the embodiments of the present invention, which relates to the communication field. The invention enables signals from one virtual port to be mapped to two physical antennas or eight physical antennas, or enables signals from two virtual ports to be mapped to one physical antenna. The method includes: receiving signals from one virtual port, dividing the signals into two paths by weighting, and transmitting the weighted signals of the two paths through two physical antennas respectively. The embodiments of the present invention can be applied to antenna mapping.

Description

The present invention claims the priority of the Chinese patent application filed on May 7, 2012, the Chinese Patent Application No. 201210149869.3, entitled "A Virtual Antenna Mapping Method and Apparatus". The entire contents are incorporated herein by reference. The present invention relates to the field of wireless communication technologies, and in particular, to a virtual antenna mapping method and apparatus.

BACKGROUND With the development of LTE (Long Term Evolution) network construction, how to better meet user needs and improve user experience has become the focus of mobile network construction. This includes combining multiple RRU (Radio Remote Unit) coverage areas in a specific scenario to improve coverage, improve signal quality, and improve network performance.

The LTE multi-RRU common cell solution aims to combine single-channel cells, dual-channel cells, and multi-channel cells to form a cell with a larger coverage area, and has achieved the goal of reducing handover and reducing call drop rate. The single-channel cell refers to a cell covered by a single-channel RRU as a source, and is generally used for indoor coverage and outdoor macro station blinding; a multi-channel cell refers to a cell covered by a multi-channel RRU (such as an 8-channel RRU). Generally used for macro station coverage; a dual-channel cell refers to a cell covered by a dual-channel RRU, which is generally used for deep coverage of residential areas and outdoor macro station blinding.

In a multi-RRU common cell solution, the number of physical antennas belonging to different RRUs in the same cell may be different (for example, 8+2, 8+2+1, and 8+1), but the number of logical ports corresponding to different RRUs must be the same ( Because the number of logical ports at the cell level is carried by the PBCH channel (Physical Broadcasting Channel), and the PBCH channel is sent by multiple RRUs, the number of logical ports is the same for all RRUs, and the number of logical ports is smaller than Wait The number of physical antennas in the RRU), so that 8+2 can support two logical ports, and 8+2+1, 8+1 can support one logical port or two logical ports. When the 8+2+1, 8+1 combination mode supports one logical port, you need to design a logical port to two physical antennas and one logical port to the VAM (Virtual Antenna Mapping) mode of the physical antenna. When the 8+2+1 and 8+1 merge modes support two logical ports, you need to design the VAM mapping mode of two logical ports to one physical antenna.

The VAM mapping mode of the two logical ports to eight physical antennas provided by the prior art does not apply to one logical port to two physical antennas, one logical port to eight physical antennas, and two logical ports to one physical. Virtual antenna mapping of the antenna.

SUMMARY OF THE INVENTION Embodiments of the present invention provide a virtual antenna mapping method and apparatus, which can implement mapping of a logical port signal to two physical antennas or eight physical antennas, or mapping signals of two logical ports to one physical antenna.

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

In one aspect, a virtual antenna mapping method is provided, including:

Receiving signals through a logical port;

Separating the signal into two signals by weighting;

The weighted two signals are respectively transmitted through two physical antennas. A virtual antenna mapping method is also provided, including:

Receiving signals through a logical port;

Separating the signal into two signals by weighting;

The weighted two signals are mapped onto eight physical antennas for transmission. Another virtual antenna mapping method is also provided, including: Receiving two signals through two logical ports respectively;

Combining the two signals by mixing and combining into one signal;

The combined signal is transmitted through a physical antenna. Still another virtual antenna mapping method is provided, including:

Receiving two signals through two logical ports respectively;

Outputting any one of the two signals by bypass introduction;

The arbitrary one of the signals outputted is transmitted through a physical antenna. In one aspect, a virtual antenna mapping apparatus is provided, including:

a receiving unit, configured to receive a signal through a logic port;

a weighting unit, configured to divide the signal into two signals by weighting;

And a transmitting unit, configured to transmit the weighted two signals through two physical antennas respectively. A virtual antenna mapping apparatus is also provided, including:

a receiving unit, configured to receive a signal through a logic port;

And a transmitting unit, configured to map the two signals to eight physical antennas for transmitting. Another virtual antenna mapping device is also provided, including:

a receiving unit, configured to respectively receive two signals through two logical ports;

a mixing unit, configured to combine the two signals by mixing and combining into one signal; and a transmitting unit, configured to transmit the combined signal through a physical antenna. Still another virtual antenna mapping apparatus is provided, including:

a bypass introduction unit, configured to introduce any one of the two signals by bypass Output

And a transmitting unit, configured to transmit the any one of the signals of the output through a physical antenna. The virtual antenna mapping method and device provided by the embodiments of the present invention can map a signal received by one logical port to two physical antennas or eight physical antennas by weighting, or map signals received by two logical ports to one physical antenna. .

1 is a schematic flowchart of a virtual antenna mapping method according to an embodiment of the present invention; FIG. 2 is a schematic flowchart of another virtual antenna mapping method according to an embodiment of the present invention; FIG. 4 is a schematic flowchart of still another method for mapping a virtual antenna according to an embodiment of the present invention; FIG. 5 is a schematic flowchart of still another method for mapping a virtual antenna according to an embodiment of the present invention; A schematic flowchart of a virtual antenna mapping method according to another embodiment of the present invention; FIG. 7 is a schematic flowchart of a virtual antenna mapping method according to another embodiment of the present invention; FIG. 8 is another schematic diagram of another embodiment of the present invention. FIG. 9 is a schematic structural diagram of a virtual antenna mapping apparatus according to an embodiment of the present invention; FIG. 10 is a schematic structural diagram of another virtual antenna mapping apparatus according to an embodiment of the present invention; Another embodiment provides a schematic diagram of a virtual antenna mapping device. FIG. 12 is a schematic diagram of the present invention. Another schematic diagram of a structure of a virtual antenna mapping apparatus provided by another embodiment;

FIG. 13 is a schematic structural diagram of a virtual antenna mapping apparatus according to another embodiment of the present invention; FIG. 14 is a schematic structural diagram of a virtual antenna mapping apparatus according to still another embodiment of 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 obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without departing from the inventive scope are the scope of the present invention.

A virtual antenna mapping method provided by an embodiment of the present invention, as shown in FIG. 1, includes the following steps:

5101. The virtual antenna mapping apparatus receives a signal through a logic port.

Of course, the virtual antenna mapping device here may be a BBU in a base station system composed of an RRU (Radio Remote Unit) and a BBU (Building Base Band Unit) and a physical antenna.

5102. The signal is divided into two signals by weighting;

5103. The weighted two signals are respectively transmitted through two physical antennas.

An embodiment of the present invention provides a virtual antenna mapping method. By weighting a signal received by a logical port, the effect of mapping a signal of a logical port to two physical antennas can be realized, thereby implementing one logical port to two physical entities. Downlink transmission work of the antenna

•6 fi匕

.

Optionally, as shown in FIG. 2, the embodiment of the present invention provides a virtual antenna mapping method, including the following steps:

5201. Receive a signal through a logical port.

5202. The signal is divided into two identical signals by weighting;

Optionally, the weighting includes a calculation formula by using the weight ^; [wl w2f = [l 1 obtains the weight of the two signals;

Wherein, a weighting weight of a signal mapped to one of the physical antennas, and a weighting weight of a signal mapped to another physical antenna is a transposed matrix.

5203. The weighted two signals are respectively transmitted through two physical antennas. Further, as shown in FIG. 3, a virtual antenna mapping method provided by an embodiment of the present invention includes the following steps:

5301. The virtual antenna mapping apparatus receives a signal through a logical port.

5302. The signal is divided into two signals with a phase difference by weighting;

Optionally, the weighting includes obtaining a weight of the two signals by using a calculation formula w = [wl w2] ^T = [1 e~ ^m ] ^T ;

Wherein, to be a weighted weight of a signal mapped to one of the physical antennas, w2 is a weighted weight of a signal mapped to another physical antenna, which is a phase shifting factor, which is a transposed matrix.

5303. The weighted two signals are respectively transmitted through two physical antennas.

Optionally, it is assumed that the two signals are divided into two signals having a phase difference of 90°, and the two ^=艮 physical antennas can form an equivalent circular polarization, wherein the weight expression is as follows:

Further, as shown in FIG. 4, a virtual antenna mapping method provided by an embodiment of the present invention includes the following steps:

5401. The virtual antenna mapping apparatus receives a signal through a logic port.

5402. The signal is divided into two signals having a fixed delay ^ by weighting;

Optionally, H does not divide the two signals into delays of delay step D=l. The weighting includes a calculation formula by weight w ( [ w2 = [1 e- ^{; X} Y obtains the weights of the two signals;

Wherein, to be a weighted weight mapped to one of the signals on one of the physical antennas, w2 is a weighted weight of a signal mapped to another physical antenna,

0 {k) = 2 D ^, k = O ..., l2 N^ ^D - l , is the delay step, which is the transposed matrix.

5403. The weighted two signals are respectively transmitted through two physical antennas.

The above can introduce frequency selective points on two physical antennas by adding a fixed delay. Further, as shown in FIG. 5, a virtual antenna mapping method provided by an embodiment of the present invention includes the following steps:

5501. The virtual antenna mapping apparatus receives a signal through a logic port.

S502, dividing, by weighting, the signal into two signals with a phase difference of and a fixed delay ^;

Optionally, the weighting includes obtaining a weight of the two signals by using a calculation formula w = [w\ w2] ^T e ) )];

0{k) = 2πΌ^, k = 0,\,...,\2xN^ -1 , 7) is the delay step, which is the phase shift factor, which is the transpose matrix.

5503. The weighted two signals are respectively transmitted through two physical antennas.

For the application of this scheme, when = o, = G, there is no phase difference and delay between the signals transmitted by the two physical antennas. At this time, the weight expressions of the two signals are:

w = [w\ w2 =[\ if ; The two physical antennas send exactly the same signal at this point. When D = 0, = ^/2 , no frequency selective diversity is introduced, only the two signals will be split into two signals with a phase difference of 90°, where the weight expression is as follows: w = [wl w2 = I _e -j(^) Two physical antennas transmit signals to form an equivalent circular polarization. When =I, =o. At the same time, the two physical antennas transmit signals simultaneously introducing phase difference and frequency selective diversity.

Embodiments of the present invention provide a virtual antenna mapping method, by weighting a signal received by a logical port, adding a phase difference and a delay to the two signals, and dividing the signal of one logical port into two signal outputs to implement a logical port. The signal is mapped to the effect on the two physical antennas, thereby implementing the downlink transmission of one logical port to two physical antennas. Features.

As shown in FIG. 6, a virtual antenna mapping method provided by an embodiment of the present invention includes the following steps:

5601. The virtual antenna mapping apparatus receives a signal through a logic port.

5602. The signal is divided into two signals by weighting;

Here, the specific process of weighting the signals received by one logical port into two signals can be referred to the above embodiments, and details are not described herein again.

5603. Map the weighted two signals to eight physical antennas for transmission.

The mapping scheme in step S603 can refer to the scheme in which two logical ports are mapped to eight physical antennas in the prior art, so that a scheme of mapping to eight physical antennas through one logical port can be realized.

Optionally, the VAM (Virtual Antenna Mapping) mapping scheme (fixed wide beam scheme and CDD) mapped to the eight antennas is mapped to the existing two logical ports.

(Cyclic Delay Diversity), if the two signals weighted in step S602 provided by the embodiment of the present invention are respectively output to the above two logical ports.

On ports 1 and 2, you can implement a scheme in which one logical port is mapped to eight physical antennas.

Optionally, in the case of using the fixed wide beam scheme, step S603 in the above embodiment is: dividing each of the weighted two signals into four signals by weighting and respectively transmitting through four physical antennas;

That is: one signal received by port 1 is divided into four paths by weighting, and then four signals are transmitted through four physical antennas respectively;

The other signal received by port 2 is divided into four paths by weighting, and then four signals are sent. The numbers are transmitted through four physical antennas.

In addition, when the CDD scheme is adopted, step S603 in the above embodiment is: dividing each of the weighted two signals into four signals by orthogonal frequency division multiplexing, and then adding a delay to the four signals. And cyclic prefixes are respectively transmitted through four physical antennas;

That is: port 1 divides one signal into four channels by orthogonal frequency division multiplexing, and then adds delay and cyclic prefix on four signals to transmit through four physical antennas respectively;

Port 2 divides the other signal into four channels by orthogonal frequency division multiplexing, and then adds delay and cyclic prefix to the four signals to transmit through four physical antennas.

The fixed wide beam scheme maps the beam of the antenna array to a specific direction by fixed weight filtering, and does not change with the direction of the incident source, so that the beam of the antenna array is fixed to a certain pattern and a height position; CDD The scheme divides the four antennas with the same polarization into one group, and introduces a delay between the same group of antennas, and the delay is a time-delay CDD of a sample.

The embodiment of the present invention provides a virtual antenna mapping method, which can implement the effect of mapping a signal of a logical port to eight physical antennas, thereby implementing a downlink transmission function of one logical port to eight physical antennas.

Another embodiment of the present invention provides a virtual antenna mapping method, as shown in FIG. 7, including the following steps:

5701. The virtual antenna mapping device receives two signals through two logical ports respectively.

5702. Combine the two signals into one signal by mixing and adding;

Exemplarily, the two signals are mixed and combined into one signal S by the formula S = [l 1]· [^ SJ;

Where is the signal received by one logical port, the signal received by another logical port, [ί is the transposed matrix.

S703. The combined signal is transmitted through a physical antenna.

Embodiments of the present invention provide a virtual antenna mapping method by sending two logical ports The signals are added and combined into one signal and transmitted through a physical antenna, which can realize a mapping scheme of mapping to a physical antenna through two logical ports, thereby implementing a downlink transmission function of a single antenna.

Another embodiment of the present invention provides a virtual antenna mapping method, as shown in FIG. 8, including the following steps:

S801. The virtual antenna mapping device receives two signals through two logical ports respectively.

5802. Introduce, by using a bypass, any one of the two signals;

Optionally, any one of the two signals is output by using the formula ^ = [1 ο]·[ or S = [o ι]·[;

Wherein a signal received by one logical port is a signal received by another logical port,

[ί is a transposed matrix.

Exemplarily, in this step, the method of bypass introduction may be that one of the two signals is suspended, that is, the road signal cannot be output, and the other signal is output.

5803. Send any one of the signals to be transmitted through a physical antenna.

The embodiment of the present invention provides a virtual antenna mapping method, in which two signals received by two logical ports are respectively transmitted through the same physical antenna, and a mapping scheme mapped to one physical antenna through two logical ports can be realized, thereby implementing a single The downlink transmission function of the antenna.

Of course, the virtual antenna mapping device here may be a BBU in a base station system composed of an RRU and a BBU and a physical antenna.

An embodiment of the present invention provides a virtual antenna mapping apparatus, as shown in FIG. 9, including: a receiving unit 91, configured to receive a signal through a logical port;

a weighting unit 92, configured to divide the signal into two signals by weighting;

The transmitting unit 93 is configured to transmit the weighted two signals through two physical antennas respectively. The embodiment of the present invention provides a virtual antenna mapping apparatus, which performs weighting processing on a received signal by a weighting unit, so as to implement the effect of mapping one logical port to two physical antennas, thereby implementing downlink transmission from one logical port to two physical antennas. Features. Optionally, the weighting unit 92 is further configured to divide the signal into two identical signals by weighting. Exemplarily, the weighting unit 92 obtains the weight of the two signals by the calculation formula of the weight ^^ [^1 w2f = [li.

Further, as shown in FIG. 10, the weighting unit 92 further includes:

a phase subunit 921 for dividing the signal into two signals having a phase difference by weighting; and/or,

The delay sub-unit 922 is configured to divide the signal into two signals having a fixed delay ^ by weighting.

Exemplarily, the phase sub-unit 921 is also used to calculate the weight of the two-way signal by the calculation formula of the weight ^w = [wl w2] ^T = [1 e -

Wherein, a weighting weight of a signal mapped to one of the physical antennas, w2 is a weighted weight of a signal mapped to another physical antenna, and is a phase shifting factor, which is a transposed matrix;

and / or,

The delay subunit 922 is also used to calculate the weight of the two signals by using the weight formula ^ = [w\ w2 = [1 ^ "亇;

0{k) = 2 D^,k = O ..., l2 N^ ^D -l , which is the delay step and is the transposed matrix. Optionally, the weighting unit 92 is further configured to:

The weight of the two signals is obtained by the formula w = [wl w2] ^T ] ^T of the weight w

Value

Where w1 is the weighted weight of one of the signals, and w2 is the weighted weight of the other signal, 0{k) = 2πΌ^, k = 0,\,...,\2xN^ -1 , 7) is the delay Step size, for phase shift factor, for Set the matrix.

In this way, the transmit signals of the beams with different polarization and/or frequency selective diversity can be realized in the two physical antennas. Here, the weighting unit 92 shown in FIG. 10 includes the phase sub-unit 921 and the delay sub-unit 922, and the weighting is performed. The case where the unit 92 includes only the phase sub-unit 921 or the delay sub-unit 922 does not give a schematic diagram. An embodiment of the present invention provides a virtual antenna mapping apparatus. The weighting unit adds a phase difference and a delay to a received signal by using a phase subunit and a delay subunit, and can implement an effect of mapping a logical port to two physical antennas, thereby implementing one. The downstream transmission function of the logical port to the two physical antennas.

The embodiment of the present invention provides a virtual antenna mapping apparatus 11 including: a receiving unit 111, a weighting unit 112, and a transmitting unit 113, where:

The receiving unit 111 is configured to receive a signal by using a logic port;

a weighting unit 112, configured to divide the signal into two signals by weighting;

Optionally, the weighting unit 112 is further configured to divide the signal into two identical signals by weighting;

The transmitting unit 113 is configured to map the weighted two signals to eight physical antennas for transmission. The mapping scheme of the transmitting unit 113 may use the existing two logical ports to map to the eight-antenna VAM mapping scheme (fixed wide beam scheme and CDD scheme), if the weighting unit provided by the weighting unit 112 of the embodiment of the present invention is used. Two signals are respectively input to the above two logical ports (that is, two signals output from the weighting unit 112 are input to the transmitting unit 113 through the above two logical ports, so that one logical port (port 0) can be mapped to two logical ports ( On port 1 and port 2), of course, the two logical ports here are two virtual ports for the transmitting unit 113), one logical port can be mapped to eight physical antennas, and the antenna 110 is also shown.

Further, optionally, when using a fixed wide beam scheme, the transmitting unit 113 is configured to Each of the weighted two signals is divided into four signals by weighting and transmitted through four physical antennas respectively;

The other signal received by port 2 is divided into four paths by weighting, and then four signals are transmitted through four physical antennas.

In addition, when the CDD scheme is adopted, the transmitting unit 113 is configured to divide each of the weighted two signals into four signals by orthogonal frequency division multiplexing, and then add delay and cyclic prefix on the four signals. Afterwards, they are transmitted through four physical antennas;

That is: one signal received by port 1 is divided into four paths by orthogonal frequency division multiplexing, and then the delay and cyclic prefix are added to the four signals to be transmitted through four physical antennas respectively; the other path received by port 2 The signal is divided into four paths by orthogonal frequency division multiplexing, and then the delay and the cyclic prefix are added to the four signals to be transmitted through four physical antennas.

The fixed wide beam scheme maps the beam of the antenna array to a specific direction by fixed weight filtering, and does not change with the direction of the incident source, so that the beam of the antenna array is fixed to a certain pattern and a height position; CDD The scheme divides the four antennas with the same polarization into one group, and introduces a delay between the same group of antennas, and the delay is a time-delay CDD of one sample.

Further, optionally, as shown in FIG. 12, the weighting unit 112 further includes:

a phase sub-unit 1121, configured to divide the signal into two signals with a phase difference by weighting; and/or,

The delay subunit 1122 is configured to divide the signal into two signals having a fixed delay by weighting.

Optionally, the phase sub-unit 1121 is further configured to obtain a weight of the two-way signal by using a weight formula ^=[wl w2] ^T =[1 e−;

Wherein, the weighting weight of a signal mapped to one of the physical antennas, w2 is The weighting weight of a signal mapped to another physical antenna is a phase shifting factor, which is a transposed matrix;

and / or,

The time delay unit 1122 is also used to calculate the weight of the two signals by the calculation formula of the weight ^, w = [w\ w2 = [1 ^ "亇;

0{k) = 2 D^,k = O ..., l2 N^ ^D -l , which is the delay step and is the transposed matrix. Optionally, the weighting unit 112 is further configured to:

Value

Where w1 is the weighted weight of one of the signals, and w2 is the weighted weight of the other signal, 0{k) = 2πΌ^, k = 0,\,...,\2xN^ -1 , 7) is the delay The step size, which is the phase shift factor, is the transposed matrix.

Thus, phase difference and/or frequency selective diversity can be introduced in the weighted two signals. Here, the weighting unit 112 shown in FIG. 12 includes the phase subunit 1121 and the delay subunit 1122. The weighting unit 112 only The case where the phase sub-unit 1121 or the delay sub-unit 1122 is included is not given a schematic diagram.

Embodiments of the present invention provide a virtual antenna mapping apparatus, which can implement the effect of mapping a signal of one logical port to eight physical antennas, thereby implementing a downlink transmission function of one logical port to eight physical antennas.

Another embodiment of the present invention provides a virtual antenna mapping apparatus 13, as shown in FIG. 13, including:

The receiving unit 131 is configured to separately receive two signals through two logical ports; The mixing unit 132 is configured to combine and combine the two signals into one signal by mixing; for example, the mixing unit 132 is specifically configured to:

The two signals are mixed and added by the formula S = [l 1]· [^ SJ;

Where is the signal received by one logical port and the signal received by the other logical port. The transmitting unit 133 is configured to transmit the combined signal through a physical antenna.

The embodiment of the invention provides a virtual antenna mapping device, which can realize the effect of mapping signals of two logical ports onto one physical antenna by combining signal processing, thereby implementing a downlink transmission function of a single antenna.

Another embodiment of the present invention provides a virtual antenna mapping apparatus 14, as shown in FIG.

The receiving unit 141 is configured to separately receive two signals through two logical ports;

The bypass introduction unit 142 is configured to output any one of the two signals by bypass introduction;

Illustratively, the bypass bow I into unit 142 is specifically used to:

Output any one of the two signals by the formula ^ = [1 ο]·[ f or S = [o ι]·[ f ;

Where is the signal received by one logical port and the signal received by the other logical port. The transmitting unit 143 is configured to transmit any one of the output signals through a physical antenna. The embodiment of the invention provides a virtual antenna mapping device, which can realize the effect of mapping signals of two logical ports onto one physical antenna by combining signal processing, thereby implementing a downlink transmission function of a single antenna.

A person skilled in the art can understand that all or part of the steps of implementing the above method embodiments may be completed by using hardware related to program instructions, and the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed. The foregoing steps include the steps of 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. The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the appended claims.

Claims

Rights request

1. A virtual antenna mapping method, characterized by including:

Receive signals through a logical port;

The signal is divided into two signals through weighting;

The two weighted signals are transmitted through two physical antennas respectively.

2. The method according to claim 1, characterized in that: dividing the signal into two signals through weighting includes:

The signal is divided into two identical signals by weighting.

3. The method according to claim 2, characterized in that the signal is divided into two identical signals through weighting, and the weighting includes:

The weights of the two signals are obtained through the calculation formula w = [wl w2f = [li The weighted value of a signal on a physical antenna, [f is the transpose matrix.

4. The method according to claim 1, characterized in that: dividing the signal into two signals through weighting includes:

The signal is divided into two signals with a phase difference of and/or a fixed delay by weighting.

5. The method according to claim 4, characterized in that, by weighting, the signal is divided into two signals with a phase difference of , and the weighting includes:

The weights of the two signals are obtained through the calculation formula of the weight w = [wl w2] ^T = [1 e- ^; :T;

Among them, is the weighted weight of a signal mapped to one of the physical antennas, w2 is the weighted weight of a signal mapped to another physical antenna, is the phase shift factor, and is the transposition matrix.

6. The method according to claim 4, characterized in that: weighting the signal Divided into two signals with a fixed time delay^, the weighting includes,

Obtain the weights of the two signals through the calculation formula of weight W = [wl w2 =[1 e-;

Among them, is the weighted weight of a signal mapped to one of the physical antennas, w2 is the weighted weight of a signal mapped to another physical antenna,

0{k) = 2 D^,k = O ...,l2 N^ ^D -l , is the delay step size, and is the transpose matrix.

7. The method according to claim 4, characterized in that the signal is divided into two signals with a phase difference of Δ and a fixed delay ^ through weighting, and the weighting includes: using the calculation formula of weight _w = [wl w2] ^T ] ^T obtains the two signals

weight;

0{k) = 2πΌ^, k = 0,\,...,\2xN^ -1, 7) is the delay step, is the phase shift factor, and is the transpose matrix.

8. A virtual antenna mapping method, characterized by including:

Receive signals through a logical port;

The signal is divided into two signals through weighting;

The weighted two-way signals are mapped to eight physical antennas for transmission.

9. The method according to claim 8, characterized in that said dividing the signal into two signals through weighting includes:

The signal is divided into two identical signals by weighting.

10. The method according to claim 9, characterized in that the signal is divided into two identical signals through weighting, and the weighting includes:

Obtain the weights of the two signals through the calculation formula of weight w ^ = [wl w2f = [li; Among them, wl is the weighted value of one of the signals, w2 is the weighted value of the other signal, and [ί is the transposed matrix.

11. The method according to claim 8, characterized in that said dividing the signal into two signals through weighting includes:

12. The method according to claim 11, characterized in that, by weighting, the signal is divided into two signals with a phase difference of , and the weighting includes:

Obtain the weights of the two signals through the calculation formula of weight w = [wl w2] ^T = [1 e~ ^m ] ^T ;

Among them, is the weighted value of one of the signals, w2 is the weighted value of the other signal, is the phase shift factor, and is the transpose matrix.

13. The method according to claim 11, characterized in that the signal is divided into two signals with a fixed time delay by weighting, and the weighting includes:

Among them, is the weighted weight of one of the signals, w2 is the weighted weight of the other signal, 0{k) = 2 D^,k = O...,l2 N^ ^D -l , is the delay step size, is Transpose matrix.

14. The method according to claim 11, characterized in that the signal is divided into two signals with a phase difference φ and a fixed delay θ (1ί, through weighting), and the weighting includes: Calculation formula w = [wl w2] ^T ] ^T to obtain the two signals

weight;

Among them, wl is the weighted weight of one of the signals, w2 is the weighted weight of the other signal, 0{k) = 2πΌ^, k = 0,\,...,\2xN^ -1, 7) is the delay step size, is the phase shift factor, is the rotation Setup matrix.

15. The method according to claims 8 to 14, characterized in that mapping the two signals to eight physical antennas for transmission includes:

Each of the two weighted signals is divided into four signals through weighting and transmitted through four physical antennas respectively;

or,

Each of the two weighted signals is divided into four signals through orthogonal frequency division multiplexing, and then a delay and a cyclic prefix are added to the four signals and then transmitted through four physical antennas respectively.

16. A virtual antenna mapping method, characterized by including:

Receive two signals respectively through two logical ports;

Combine the two signals into one signal through mixing and addition;

The combined signal is transmitted through a physical antenna.

17. The method according to claim 16, characterized in that said combining the two signals into one signal through mixing and addition includes:

Through the formula S = [l 1]·[^ SJ, the two signals are mixed and added into one signal; where is the signal received by one logical port, and is the signal received by the other logical port.

[ί is the transposed matrix.

18. A virtual antenna mapping method, characterized by including:

Receive two signals respectively through two logical ports;

Output any one of the two signals through the bypass introduction;

The output signal is transmitted through a physical antenna.

19. The method according to claim 18, wherein said outputting any one of said two signals through bypass introduction includes:

Use the formula ^ = [1 θ]·[ f or S = [o 1]·[ f to output any one of the two signals; where is the signal received by one logical port, is the signal received by another logical port, [ί is the transpose matrix.

20. A virtual antenna mapping device, characterized in that it includes:

A receiving unit for receiving signals through a logical port;

A weighting unit, used to divide the signal into two signals through weighting;

A transmitting unit, configured to transmit the weighted two-way signals through two physical antennas respectively.

21. The device according to claim 20, characterized in that the weighting unit is further used to divide the signal into two identical signals through weighting.

22. The device according to claim 21, characterized in that the weighting unit is also used to: obtain the weights of the two signals through the calculation formula of the weight w = [wl w2f = [li; where, is The weighted value of a signal mapped to one of the physical antennas, w2 is the weighted weight of a signal mapped to another physical antenna, [f is the transpose matrix.

23. The device according to claim 20, characterized in that the weighting unit further includes: a phase sub-unit, used to divide the signal into two signals with a phase difference of by weighting; and/or,

The delay subunit is used to divide the signal into two signals with a fixed delay ^ through weighting.

24. The device according to claim 23, characterized in that the phase sub-unit is also used to: obtain the two paths through the calculation formula of weight w = [wl w2] ^T = [1 e~ ^m ] ^T The weight of the signal;

Among them, is the weighted weight of a signal mapped to one of the physical antennas, w2 is the weighted weight of a signal mapped to another physical antenna, is the phase shift factor, and is the transposition matrix;

and / or,

The delay subunit is also used to: obtain the weights of the two signals through the calculation formula of the weight w = [w\ w2 = [1 e—; Among them, is the weighted weight of a signal mapped to one of the physical antennas, w2 is the weighted weight of a signal mapped to another physical antenna,

25. The device according to claim 20, characterized in that, the weighting unit ^is also used to: obtain the weight of the two signals through the calculation formula of the weight w = [wl w2] ^T e- ^;

weight;

Among them, wl is the weighted weight of one of the signals, w2 is the weighted weight of the other signal, 0{k) = 2πΌ^, k = 0,\,...,\2xN^ -1, 7) is the delay The step size is the phase shift factor, and is the transpose matrix.

26. A virtual antenna mapping device, characterized in that it includes:

A receiving unit for receiving signals through a logical port;

A weighting unit, used to divide the signal into two signals through weighting;

A transmitting unit, configured to map the weighted two-way signals to eight physical antennas for transmission.

27. The device according to claim 26, characterized in that the weighting unit is further used to divide the signal into two identical signals through weighting.

28. The device according to claim 26, characterized in that the weighting unit further includes: a phase sub-unit, used to divide the signal into two signals with a phase difference of by weighting; and/or,

29. The device according to claim 28, characterized in that the phase sub-unit is also used to: obtain the two paths through the calculation formula of weight w = [wl w2] ^T = [1 e~ ^m ] ^T The weight of the signal;

Among them, is the weighted value of a signal mapped to one of the physical antennas, w2 is The weighted value of a signal mapped to another physical antenna, is the phase shift factor, and is the transpose matrix;

and / or,

The delay subunit is also used to: obtain the weights of the two signals through the calculation formula of the weight W = [w\ w2 =[1 e—;

30. The device according to claim 26, characterized in that the weighting unit ^is also used to: obtain the weight of the two signals through the calculation formula of the weight w = [wl w2] ^T e- ^;

weight;

31. The device according to claim 26, wherein the transmitting unit is configured to divide each of the weighted two-channel signals into four-channel signals through weighting and transmit them respectively through four physical antennas;

or,

It is used to divide each of the weighted two-channel signals into four-channel signals through orthogonal frequency division multiplexing, and then add delay and cyclic prefix to the four-channel signals and transmit them respectively through four physical antennas. .

32. A virtual antenna mapping device, characterized by including:

The receiving unit is used to receive two signals through two logical ports;

A mixing unit, used to combine the two signals into one signal through mixing and addition; A transmitting unit, configured to transmit the combined signal through a physical antenna.

33. The device according to claim 32, characterized in that the mixing unit is specifically used to: realize the mixing and addition of two signals through the formula S = [l 1]·[^ SJ;

where is the signal received by one logical port, is the signal received by another logical port,

[ί is the transposed matrix.

34. A virtual antenna mapping device, characterized by including:

The receiving unit is used to receive two signals through two logical ports;

A bypass introduction unit is used to output any one of the two signals through the bypass introduction;

A transmitting unit, configured to transmit any of the output signals through a physical antenna.

35. The device according to claim 34, characterized in that the bypass introduction unit is specifically used for:

Use the formula ^ = [1 θ]·[ f or S = [o 1]·[ f to output any one of the two signals;

[ί is the transposed matrix.