WO2015018039A1

WO2015018039A1 - Mimo test method, apparatus and system

Info

Publication number: WO2015018039A1
Application number: PCT/CN2013/081102
Authority: WO
Inventors: 陈磊; 顾亮
Original assignee: 华为技术有限公司
Priority date: 2013-08-08
Filing date: 2013-08-08
Publication date: 2015-02-12
Also published as: CN105309002B; CN105309002A

Abstract

Embodiments of the present invention provide a multiple-input multiple-output (MIMO) test method, apparatus and system, which relate to the field of communications, and can reduce the complexity and cost of a channel simulator. The MIMO test method comprises: acquiring T transmission signals, where T is an integer, and T≥1; grouping the T transmission signals into k groups of transmission signals, each group of transmission signal comprising at least one transmission signal, wherein k is an integer, and k＞1 or k=1; performing h channel simulation processes on each group of transmission signals so as to obtain totally m groups of processed signals, wherein h and m are integers, h≥1, and m=k×h; and combining the m groups of processed signals to obtain R receiving signals, wherein R is an integer, and R≥1. The MIMO test method, apparatus and system provided in the embodiments of the present invention are used for MIMO test.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular, to a MIMO test method, apparatus, and system. Background technique

MIMO (Multi-Input Multiple-Output) is a transmission technology in which both the transmitting end and the receiving end have multiple antennas. In a communication device that uses MIMO technology for communication, each antenna of the transmitting end can independently transmit signals. Each antenna at the receiving end receives a signal and performs signal recovery, thereby increasing the rate of information transmission. Communication equipment with dozens or even hundreds of transmitting and receiving antennas is currently under development. In order to ensure the performance of communication equipment, various tests are required at various stages of product development. The channel emulator can simulate the real wireless channel environment under MIMO transmission and is therefore widely used in the testing of communication equipment. Currently, when performing MIMO testing, all signals of the transmitting channel of the transmitting device are sent to the input port of the channel emulator, and after being processed by the channel emulator, all output signals are output from the output port of the channel emulator to the receiving device. Receive channel. Therefore, the input port of the channel emulator is equal to the number of transmitting antennas of the transmitting device, and the number of receiving ports is equal to the number of receiving antennas of the receiving device. When the number of transmitting antennas or receiving antennas is large, the channel emulator needs a large number of input and output ports, and the requirements for channel emulation processing capability of the channel emulator are also increased, and the complexity and cost of the channel emulator are increased. It will increase.

SUMMARY OF THE INVENTION Embodiments of the present invention provide a MIMO test method, apparatus, and system,

The complexity and cost of the channel emulator. In order to achieve the above object, embodiments of the present invention use the following technical solutions: Embodiments of the present invention provide a MIMO test method, apparatus, and system,

The complexity and cost of the channel emulator. To achieve the above objective, the embodiment of the present invention uses the following technical solutions: In a first aspect, a MIMO test method for multiple input multiple output is provided, including

Obtaining a T-channel transmit signal, where T is an integer, and ^≥1; Dividing the T-channel transmit signal into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k being an integer, and > 1 or = 1; performing h times for each set of the transmit signals respectively The channel simulation process obtains a total of m sets of processed signals, the h and the m are integers and ≥1, m = kxh - combining the m sets of processed signals to obtain an R way received signal, the R being an integer, And W≥l. In combination with the first aspect, in the first achievable manner,

The dividing the T-channel transmit signal into the k-group transmit signal includes: dividing the T-channel transmit signal into k sets of transmit signals when the T can divide I, and each set of the transmit signals includes one transmit Signal, the I is the number of input ports of the channel emulator, KT ^ I=T - when the chirp cannot divide I, the cpu transmit signal is divided into k sets of transmit signals, wherein there is a k-1 group The transmitted signal includes one transmitted signal, and one set of transmitted signals includes M

a transmit signal, the M being the remainder of the τ divided by the I,

Indicates that the result of % is rounded up. In combination with the first aspect or the first implementation manner, in the second implementation manner, the performing h channel simulation processing for each group of the transmitting signals respectively to obtain the m group processed signals includes: acquiring the k respectively a channel model corresponding to all receiving antennas; a channel model corresponding to all receiving antennas according to the k-group transmitting signals, and h-channel channel simulation processing for each group of the k-group transmitting signals to obtain m-group processing After the signal.

In combination with the second implementation manner, in a third implementation manner, the channel simulation model corresponding to all the receiving antennas according to the k sets of transmit signals performs h channel simulation processing on the k sets of transmit signals respectively to obtain m The group processed signals include: When the R can divide O, the k sets of transmit signals are grouped with channel models corresponding to all receive antennas such that each set of the transmit signals corresponds to an h group of subchannel models, and each set of the subchannel models includes and The channel corresponding to the receiving antenna, the 0 is the channel simulator h

Number of output ports, 0 < ? or 0 = i?, _

Indicates that the result of the /O is rounded up; according to each group of the transmitted signals corresponding to the h group of subchannel models, each group of the transmitted signals is subjected to channel simulation processing to obtain m sets of processed signals.

With reference to the second implementation manner, in a fourth implementation manner, the performing, according to the channel model corresponding to the k groups of transmit signals and all receiving antennas, performing h times for each group of the transmitted signals in the k sets of transmit signals The channel emulation processing obtains the m sets of processed signals, including: when the R cannot divide by 0, grouping the k sets of transmit signals with channel models corresponding to all receive antennas, so that each set of the transmit signals corresponds to the h group of subchannel models In the h group subchannel model corresponding to each group of the transmitted signals, the h-1 group subchannel model includes a channel corresponding to 0 receiving antennas, and a set of subchannel models includes N receiving antennas.

R/

Corresponding channel, the N is a remainder of the R divided by the 0, and ^k /0 performs channel simulation processing on each set of the transmitted signals according to the h group subchannel model of each set of the transmitted signals to obtain m sets of processing After the signal.

In combination with the third achievable manner or the fourth achievable manner, in the fifth achievable manner,

The m group processed signal is composed of the h group processed signals corresponding to each group of the transmitting signals, And performing channel simulation processing on each set of the transmitted signals according to each group of the transmit signals corresponding to the h group subchannel model to obtain the m processed signals:

The X-th transmission signal is repeatedly acquired h times, the 1 χ χ ≤; the X-th transmission signal obtained according to the ith acquisition signal acquired in the X-th transmission signal corresponds to the first in the h-group sub-channel model The i group subchannel model, the 1 ≤ ≤ performing channel simulation processing on the ith acquired transmission signal according to the ith group subchannel model to obtain an ith group processed signal corresponding to the Xth group of transmitted signals . With reference to the first aspect, the first to the fifth implementation manners, in the sixth implementation manner, the combining the m group channel processed signals to obtain the R channel receiving signals includes: when the h is equal to 1, The m-channel channel-processed signals are arranged in an R-channel reception signal in the order of the receiving antennas; when the h is greater than 1, the m-channel channel-processed signals are channel-passed through channels corresponding to the same receiving antenna. The signals obtained by the simulation process are added, and the added signals are arranged in the order of the receiving antennas into R-channel receiving signals. In a second aspect, a channel emulator is provided, including:

An acquiring unit, configured to acquire a T-channel transmitting signal, where T is an integer, and ^≥1; a dividing unit, configured to divide the T-channel transmitting signal acquired by the first acquiring unit into a k-group transmitting signal, where The group of transmit signals includes at least one transmit signal, the k being an integer, and > 1 or = 1;

a simulation unit, configured to perform a h-channel channel simulation process on each of the sets of the transmitted signals to obtain a total m-group processed signal, where h and the m are integers and ^≥1, m=kxh _; The m-process processed signals are combined to obtain an R-channel received signal, the R being an integer, and ^?≥1.

With reference to the second aspect, in a first implementation manner, the dividing unit is specifically configured to: when the T can divide I, divide the T-channel transmit signal into k sets of transmit signals, and each set of the transmit The signal includes one transmit signal, and the I is the number of input ports of the channel emulator, I < T ^ I=T ; When the Τ cannot divide I, the T-channel transmission signal is divided into k groups of transmission signals, wherein the k-1 group transmission signal includes one transmission signal, and one group of transmission signals includes M transmission signals. M is the remainder of the τ divided by the I, 'one

Indicates that the result of % is rounded up. In combination with the second aspect or the first implementation manner, in the second implementation manner, the simulation unit is specifically configured to:

Obtaining, respectively, a channel model corresponding to the k groups of transmit signals and all the receive antennas; performing h-channel emulation on each of the k sets of transmit signals according to the k-group transmit signal and a channel model corresponding to all receive antennas The m group processed signal is obtained after processing.

In combination with the second achievable manner, in a third implementation manner, the simulation unit is specifically configured to: when the R can divide by 0, perform the channel model corresponding to the k sets of transmit signals and all receive antennas The grouping causes each set of the transmitted signals to correspond to an h group of subchannel models, each set of the subchannel models including a channel corresponding to 0 receiving antennas, the 0 being the number of output ports of the channel emulator, 0 < ? or 0 = i?, R

According to each group of the transmission signals corresponding to the h group subchannel model, each group of the transmission signals is subjected to channel simulation processing to obtain m groups of processed signals.

With reference to the second implementation manner, in a fourth implementation manner, the simulation unit is specifically configured to: when the R cannot divide by 0, correspond to the k sets of transmit signals to all receiving antennas. The channel model is grouped such that each set of the transmitted signals corresponds to an h group of subchannel models, wherein each group of the h groups of subchannel models corresponding to the transmitted signals has an h-1 group subchannel model including 0 receiving antennas Corresponding channel, there is a set of subchannel models including N receiving antennas

Corresponding channel, where N is the remainder of dividing R by the zero,

The m group processed signal is processed by each group of the transmitted signals corresponding to the h group processed signal group

The simulation unit is specifically configured to:

The X-th transmission signal is repeatedly acquired h times, the 1 χ χ ≤ Α; the X-th transmission signal obtained according to the ith acquisition signal acquired in the X-th transmission signal corresponds to the h-group sub-channel model The i-th sub-channel model, the 1 ≤ ≤ /; performing channel simulation processing on the ith acquired transmission signal according to the ith group sub-channel model to obtain an ith group corresponding to the X-th group transmission signal Processed signal. With reference to the first aspect, the first to the fifth implementation manners, in the sixth implementation manner, the merging unit is specifically configured to: when the h is equal to 1, the signal processed by the m group of channels is followed The receiving antennas are sequentially arranged in an R-channel receiving signal; when the h is greater than 1, the signals obtained by performing channel emulation processing on the channels corresponding to the same receiving antenna in the m-channel channel-processed signals are added, and the phase is added. The added signals are arranged in an R-channel reception signal in the order of the receiving antennas. In a third aspect, a MIMO test system is provided, including: any of the above channel emulators, where the channel emulator is configured to acquire a T-channel transmit signal No., T is an integer, and ≥1; dividing the crap transmit signal into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k being an integer, and i or =1; Performing h channel simulation processing for each group of the transmitted signals respectively to obtain a total of m sets of processed signals, wherein h and the m are integers and ^≥1, = kxh- the processed signals of the m groups are combined to obtain R a receiving signal, the R is an integer, and ^? ≥ 1; a transmitting device, configured to send the T-channel transmitting signal to the channel emulator; and a receiving device, configured to receive the R-channel sent by the channel emulator receive signal. In a fourth aspect, a channel emulator is provided, including:

a processor, the processor is configured to:

Obtaining a T-channel transmit signal, where T is an integer, and ^≥1; dividing the T-channel transmit signal into k-group transmit signals, each set of the transmit signals includes at least one transmit signal, where k is an integer, and >1 or = 1; performing h channel simulation processing on each of the sets of the transmitted signals respectively to obtain a total of m sets of processed signals, the h and the m being integers and ^≥1, = kxh- The processed signals are combined to obtain an R-channel received signal, the R being an integer, and W≥l. In combination with the fourth aspect, in the first achievable manner,

The processor is specifically configured to: when the T can divide I, divide the T-channel transmit signal into k sets of transmit signals, each set of the transmit signals includes one transmit signal, and the I is a channel emulator Number of input ports,

When the Τ cannot divide I, the 发射 way transmission signal is divided into k groups of transmission signals, wherein the k-1 group transmission signal includes one transmission signal, and one group of transmission signals includes M

a transmit signal, the M being the remainder of the τ divided by the I,

Indicates that the result of % is rounded up. With reference to the fourth aspect or the first implementation manner, in a second implementation manner, the processor is specifically configured to: separately obtain a channel model corresponding to the k groups of transmit signals and all receive antennas; The k-group transmission signal and the channel model corresponding to all the receiving antennas perform h-channel channel simulation processing on each of the k-group transmission signals to obtain m-group processed signals.

In combination with the second implementation manner, in a third implementation manner, the processor is specifically configured to: when the R can divide by 0, the channel model corresponding to the k sets of transmit signals and all receive antennas Performing grouping such that each set of the transmitted signals corresponds to an h group of subchannel models, each set of the subchannel models including a channel corresponding to 0 receiving antennas, and the 0 is a channel emulator h

Number of output ports, 0 < ? or 0 = i?, _

In a second implementation manner, in a fourth implementation manner, the processor is specifically configured to: when the R cannot divide by 0, use a channel model corresponding to the k groups of transmit signals and all receive antennas The grouping is performed such that each of the sets of the transmitted signals corresponds to the h group of subchannel models, wherein each of the h groups of subchannel models corresponding to the transmitted signals has an h-1 group subchannel model including channels corresponding to 0 receiving antennas. There is a set of subchannel models including channels corresponding to N receiving antennas, and N is a remainder of dividing the R by the zeros, According to each group of the transmission signals corresponding to the h group subchannel model, each group of the transmission signals is subjected to channel simulation processing to obtain m groups of processed signals.

In combination with the third achievable manner or the fourth achievable manner, in the fifth achievable manner, the m sets of processed signals are composed of h sets of processed signals corresponding to each set of the transmitted signals, where The processor is specifically configured to: repeatedly acquire H times for the Xth group of transmit signals, where 1≤χ≤Α; and corresponding to the Xth transmit signal obtained according to the transmit signal acquired by the ith time in the Xth transmit signal The i-th sub-channel model in the group sub-channel model, the 1 ≤ ≤ /; performing channel simulation processing on the ith acquired transmission signal according to the ith group sub-channel model to obtain the X-th group transmission The i-th processed signal corresponding to the signal. With reference to the fourth aspect, the first to the fifth implementation manners, in the sixth implementation manner, the processor is specifically configured to: when the h is equal to 1, the signal processed by the m group of channels is followed The receiving antennas are sequentially arranged in an R-channel receiving signal; when the h is greater than 1, the signals obtained by performing channel emulation processing on the channels corresponding to the same receiving antenna in the m-channel channel-processed signals are added, and the phase is added. The added signals are arranged in an R-channel reception signal in the order of the receiving antennas. According to a fifth aspect, a MIMO test system is provided, including: any of the above channel emulators, where the channel emulator is configured to acquire a T-channel transmit signal, where T is an integer, and ≥1; The signal is divided into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k is an integer, and i or = 1; respectively, each set of the transmit signals is subjected to h channel simulation processing to obtain a total m group After processing, the h and the m are integers and ^≥1, = kxh - the _m groups of processed signals are combined to obtain an R channel received signal, the R being an integer, and ≥1; And transmitting the T channel transmission signal to the channel emulator; and receiving means, configured to receive an R channel reception signal sent by the channel emulator. In a sixth aspect, a transmitting apparatus is provided, including: a generating unit, configured to generate a T-channel transmitting signal, where Τ is an integer, and ≥1; a dividing unit, configured to divide the 发射-road transmitting signal into k groups of transmitting signals, where each group of the transmitting signals includes at least one transmitting a signal, the k is an integer, and >1 or 1; a transmitting unit, configured to send the k sets of transmit signals to a channel emulator, so that the channel emulator separately performs h channels for each set of the transmit signals The simulation process obtains a total of m sets of processed signals, wherein h and the m are integers and ^≥1, m = kxh _{o. In} combination with the sixth aspect, the transmitting apparatus in the first implementation manner includes: The dividing unit is specifically configured to: when the T can divide I, divide the T-channel transmit signal into k sets of transmit signals, each set of the transmit signals includes one transmit signal, and the I is a channel emulator The number of input ports, KT^I=T-, when the Τ cannot be divisible by I, the cpu transmit signal is divided into k sets of transmit signals, wherein there are k-1 sets of transmit signals including one transmit signal, and one exists Group transmit signal including M

Transmitted signals, the M being the remainder of the T divided by the I,

According to a seventh aspect, a receiving apparatus is provided, including: a receiving unit, configured to receive a processed signal corresponding to all transmitted signals sent by a channel emulator, where each processed signal corresponding to the transmitted signal is a channel emulator Obtaining a channel simulation process for each set of the transmitted signals according to the h group subchannel model corresponding to each set of the transmitted signals,

Mouth, one,

O is the number of output ports of the channel emulator, the R is an integer, and ?≥1; a merging unit is configured to combine the m groups of processed signals to obtain an R-channel received signal, where R is an integer, and ^ ?≥1. According to an eighth aspect, a MIM0 test system is provided, including: any of the foregoing transmitting devices, where the transmitting device is configured to generate a T-channel transmitting signal, where T is an integer, and ≥1; Divided into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k being an integer, and >1 or =1; transmitting the k sets of transmit signals to a channel emulator to facilitate the channel emulation The device performs h channel simulation processing on each of the sets of the transmitted signals to obtain a total of m sets of processed signals, wherein h and the m are integers and ≥1, m = kxh, and the receiving device is used for receiving channels. The m sets of processed signals sent by the emulator, wherein the m sets of processed signals are obtained by the channel emulator according to respectively performing h channel emulation processing on each set of the transmitted signals,

Rounding up, the 0 is the number of output ports of the channel emulator, the R is an integer, and ?≥l; combining the m sets of processed signals to obtain an R way receiving signal, where R is an integer, and

R>\; a channel emulator, wherein the channel emulator is configured to perform h-channel emulation processing on each set of the transmitted signals to obtain a total m-group processed signal, where h and the m are integers and ^≥1, m = kxh. In a ninth aspect, a transmitting apparatus is provided, including:

a processor, configured to generate a T-channel transmit signal, where T is an integer, and ^≥1; dividing the T-channel transmit signal into k-group transmit signals, each set of the transmit signals including at least one transmit signal, k is an integer, and >1 or = 1; a transmitter, configured to send the k sets of transmit signals to a channel emulator, so that the channel emulator separately performs h channel emulation processing on each set of the transmit signals a total of m processed signals, wherein h and the m are integers and ≥1, m = kxh _{o. In} combination with the ninth aspect, the transmitting apparatus in the first implementation manner, Used for: When the chirp is divisible by I, the T-channel transmit signal is divided into k sets of transmit signals, each set of the transmit signals includes one transmit signal, and the I is the number of input ports of the channel emulator, I < T ^ I=T; when the Τ cannot divide I, the cpu transmit signal is divided into k sets of transmit signals, wherein there are k-1 sets of transmit signals including 1 transmit signals, and a set of transmit signals including M

Transmitted signals, the M being the remainder of the T divided by the I,

The result of the indication of % is rounded up. A tenth aspect provides a receiving apparatus, including:

a receiver, configured to receive the m sets of processed signals sent by the channel emulator, where the m sets of processed signals are obtained by the channel emulator according to respectively performing h channel emulation processing on each set of the transmitted signals,

The 0 is an output port number of the channel emulator, the R is an integer, and ≥ 1 ; the processor is configured to combine the m groups of processed signals to obtain an R channel receiving signal, where R is an integer. And ^? ≥ 1. According to an eleventh aspect, a MIMO test system is provided, comprising: any of the above-mentioned transmitting devices, wherein the transmitting device generates a T-channel transmitting signal, where T is an integer, and ^≥1; Divided into k sets of transmit signals, each set of transmit signals includes at least one transmit signal, the k being an integer, and i or = 1; transmitting the k sets of transmit signals to a channel emulator to facilitate the channel emulator Performing h channel simulation processing on each of the sets of the transmitted signals to obtain a total of m sets of processed signals, wherein h and the m are integers and ^≥1, = kxh - any of the above receiving devices for receiving The m sets of processed signals sent by the channel emulator, wherein the _m sets of processed signals are respectively determined by the channel emulator according to each group The transmitted signal is subjected to h channel simulation processing, /0, the /0 result is rounded up, the 0 is the number of output ports of the channel emulator, the R is an integer, and R>\; After the group processing, the signals are combined to obtain an R channel receiving signal, wherein R is an integer, HR ≥ V, a channel emulator, and the channel emulator is configured to perform h channel simulation processing for each group of the transmitting signals respectively to obtain a total m group. After processing the signal, the h and the m are integers and ^≥1, m = kxh. An embodiment of the present invention provides a MIMO test method, apparatus, and system, where the multiple input multiple output MIMO test method includes: acquiring a T channel transmit signal, where T is an integer, and τ>\· transmitting the loop The signal is divided into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k is an integer, and >1 or = 1; respectively, each set of the transmit signals is subjected to h channel simulation processing to obtain a total of m The group processed signal, the h and the m are integers and ^ ≥ 1, m = kxh - the m sets of processed signals are combined to obtain an R way received signal, the R being an integer, and ≥ 1. In this way, the k-group transmission signals are obtained by grouping the T-channel transmission signals, and each group of the transmission signals is subjected to h-channel channel simulation processing to obtain a total of m-group processed signals, so that the channel simulation process is directed to the transmission signal grouping. Performing channel simulation for all transmitted signals relative to the prior art to obtain all output signals, effectively reducing the complexity and cost of the channel emulator. BRIEF DESCRIPTION OF THE DRAWINGS In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, in the following description The drawings are only some of the embodiments of the present invention, and those skilled in the art can obtain other drawings based on these drawings without any creative work. 1 is a flowchart of a MIMO test method according to an embodiment of the present invention; FIG. 2 is a schematic diagram of a MIMO test system according to an embodiment of the present invention; FIG. 3 is a flowchart of another MIMO test method according to an embodiment of the present invention; FIG. 4 is a flowchart of another MIMO test method according to an embodiment of the present invention; FIG. Schematic;

FIG. 6 is a schematic diagram of another MIMO test system according to an embodiment of the present invention; FIG. 7 is a schematic structural diagram of another channel emulator according to an embodiment of the present invention; FIG. 8 is a schematic structural diagram of a transmitting apparatus according to an embodiment of the present invention; ;

FIG. 9 is a schematic structural diagram of a receiving apparatus according to an embodiment of the present invention;

FIG. 10 is a schematic diagram of still another MIMO test system according to an embodiment of the present invention; FIG. 1 is a schematic structural diagram of another transmitting device according to an embodiment of the present invention;

FIG. 12 is a schematic structural diagram of another receiving apparatus according to an 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 embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

An embodiment of the present invention provides a MIMO test method, as shown in FIG. 1 , including: Step 101: Acquire a T-channel transmit signal.

The T-channel transmission signal may be generated by a transmitting device, where the transmitting device is composed of a plurality of communication devices, each of the communication devices is provided with at least one transmitting day, wherein the T is an integer, and ≥1, the T represents The number of ways to transmit a signal.

Step 102: The T-channel transmit signal is divided into k-group transmit signals, and each set of the transmit signals includes at least one transmit signal.

k

The k is an integer, and >1 or =1, usually,

The result is rounded up, and the I can be the number of input ports of the channel emulator, for example, T=10:

1=3, Bay 10/ When the T can divide I, the T-channel transmit signal is divided into k sets of transmit signals, and each set of the transmit signals includes one transmit signal <T or =?\

Specifically, when the number I of the input port of the channel emulator is equal to the T-channel transmit signal, that is, the T-channel transmit signal is divided into a set of transmit signals = 1, and the set of transmit signals includes T transmit signals. Signal, then the packet of the T-channel transmit signal is the same as the case where the transmitting device does not have a large-scale transmit antenna, and the transmit signal is not grouped.

When the T cannot divide I, the T-channel transmit signal is divided into k sets of transmit signals, where there are k-1 groups of the transmit signals including 1 transmit signals, and a set of the transmit signals includes M A signal is transmitted, the M being the remainder of the T divided by the I.

The grouping process of the transmitted signals is to ensure that the transmitted signals can be traversed during the channel simulation process, that is, channel emulation processing is performed on each of the transmitted signals.

Step 103: Perform h channel simulation processing on each group of the transmitted signals to obtain a total m group processed signal, where h and the m are integers and ≥1, m=kxh _o

The channel model of the MIMO system in the embodiment of the present invention is Η , Η is a matrix of R x T, and R is the number of channels of the received signal, and the H is:

H =

The element of the i-th row and the j-th column of the 表示 represents a channel between the transmitting antenna j and the receiving antenna i, and the channel models corresponding to all the receiving antennas are respectively obtained by acquiring the k-group transmitting signals, that is, acquiring k channel models, When the T can divide I, each channel model includes R rows and I columns; when the T cannot divide I, there are k-1 channel models including R rows and I columns, and there is a channel model including R rows. M column channel, the M is the remainder of the T divided by the I.

For example, a channel model corresponding to all the receiving antennas may be separately obtained from the k group transmitting signals, and each group of the k group transmitting signals may be performed according to the k group transmitting signals and channel models corresponding to all receiving antennas. H-channel channel simulation processing to obtain m-group processed signals number. Specifically, when the R can divide by 0, the k sets of transmit signals are grouped with channel models corresponding to all receive antennas, so that each set of the transmit signals corresponds to an h group of subchannel models, and each set of the subchannel models Including the channel corresponding to 0 receiving antennas, the 0 is the number of output ports of the channel emulator, 0 <? Or 0=i?,

^g /< ...― round up, for example, when the T can divide I, each channel model includes R rows and I columns channels, and after being divided into h groups of subchannel models, each subchannel model includes 0 rows and 1 column channels; When the T cannot divide I, there are k-1 channel models including R rows and I columns channels, and after being divided into h groups of subchannel models, each subchannel model includes 0 rows and 1 column channels, and there is one channel model including R rows M. After the column channel is divided into h groups of subchannel models, each subchannel model includes 0 rows and M columns of channels; according to each group of the transmitted signals corresponding to the h group of subchannel models, each group of the transmitted signals is subjected to channel simulation processing to obtain m groups of processing. After the signal.

When the R cannot divide by 0, grouping the k sets of transmit signals with channel models corresponding to all receive antennas, so that each set of the transmit signals corresponds to an h group of subchannel models, where each set of the transmit signals corresponds to In the h group subchannel model, there are h-1 group subchannel models including channels corresponding to 0 receiving antennas, and a set of subchannel models including N receiving antennas h R'

Corresponding channel, the N is a remainder of the R divided by the 0. For example, when the T can divide I, each channel model includes an R row and I column channel, and is divided into h groups of subchannel models, and then exists. Each subchannel model in the h-1 group subchannel model includes a 0 row I column channel; There is a set of subchannel models, each subchannel model includes N rows and 1 column channels; when the T cannot divide I, there are k-1 channel models including R rows and I columns channels, which are divided into h groups of subchannel models, and then exist Each subchannel model in the h-1 group subchannel model includes 0 rows and 1 column channels, and each subchannel model in the set of subchannel models includes N rows and 1 column channels; there is a channel model including R rows and M columns channels, divided into h After the subchannel model is set, each subchannel model in the h-1 group subchannel model includes 0 rows and M columns; there is a subchannel model in each subchannel model including N rows and M columns. According to each group of the transmission signals corresponding to the h group subchannel model, each group of the transmission signals is subjected to channel simulation processing to obtain m groups of processed signals. The m sets of processed signals are composed of h sets of processed signals corresponding to each set of the transmitted signals, so the channel emulation processing is performed on each set of the transmitted signals according to each set of the transmitted signals corresponding to the h sets of subchannel models. The signals obtained after obtaining m groups include:

Repeating the acquisition of the Xth group of signals for h times, the 1≤χ≤;

The Xth group transmission signal obtained according to the ith acquired transmission signal in the Xth group transmission signal corresponds to the i-th group subchannel model in the h group subchannel model, wherein 1≤''≤ according to the ith The group subchannel model performs channel simulation processing on the ith acquired transmission signal to obtain an ith group processed signal corresponding to the Xth group of transmitted signals.

Step 104: Combine the processed signals of the m groups to obtain an R channel receiving signal, where R is an integer, and W≥l.

When the h is equal to 1, the m-channel channel-processed signals are arranged into an R-channel received signal in the order of the receiving antennas; when the h is greater than 1, the m-group channel-processed signals are passed through The signals obtained by performing channel emulation processing on the channels corresponding to the same receiving antenna are added, and the added signals are arranged in the order of the receiving antennas into R-channel receiving signals.

Specifically, when the number of output ports of the channel emulator is equal to the R channel receiving signal, that is, 0=i?, the R channel receiving signal is divided into a group of receiving signals, the one The group received signal includes R received signals, and the packet of the R received signal is the same as the case where the receiving signal is not grouped when the receiving apparatus does not have a large-scale receiving antenna.

In this way, the k-group transmit signals are obtained by grouping the T-channel transmit signals, and each group of the transmit signals is subjected to h-channel channel emulation processing to obtain a total m-group processed signals, so that the channel emulation process is for the transmit signal packets. Performing channel simulation for all transmitted signals relative to the prior art to obtain all output signals, effectively reducing the complexity and cost of the channel emulator.

In practical applications, the I may be smaller than the number of input ports of the channel emulator, and the 0 may be smaller than the number of output ports of the channel emulator. For example, the channel emulator has 8 input ports, and only 6 input ports may be used. , ie 1=6. The channel emulator has 8 output ports and can use only 6 of the output ports, ie 0=6.

It should be noted that the MIMO test method may be jointly performed by a transmitting device, a channel emulator, and a receiving device, or may be added to other devices based on a transmitting device, a channel emulator, and a receiving device, as shown in FIG. 2 As shown in the fourth embodiment of the present invention, the MIMO test system includes a transmitting device 201, a switching unit 202, a channel emulator 203, a storage merging unit 204, and a receiving device 205. The transmitting device 201 is composed of one or more communication devices. Each of the communication devices is provided with at least one transmitting antenna for generating and transmitting a transmitting signal, the transmitting device 201 may transmit a T-channel transmitting signal, and the switching unit 202 is configured to control a signal of the transmitting device 201. Transmit, the channel emulator 203 is configured to perform channel emulation on the transmit signal input by the input port, and output from the output port, where the input port of the signal emulator 203 is one, and the output port is zero, the storage merge The unit 204 is used to output the same signal to the output port of the channel emulator 203. The signals of the receiving antennas are used for combining, the receiving device 205 is configured to receive the combined signals transmitted by the storage and combining unit 204, and the receiving device 205 is composed of one or more communication devices, each of which is provided with at least A receiving antenna, the receiving antenna can receive an R channel signal.

4 Set T=5, 1=2, 0=3, R=4. The specific MIMO test method is shown in Figure 3, including:

Step 301: The transmitting device generates five transmission signals and sends the signals to the switch unit. The embodiment of the present invention assumes that the 5-way transmit signals are respectively, , ₃ , X», 5.

It should be noted that, in order to ensure synchronous transmission of the 5-way transmit signal, the transmitting device 201 may send a first trigger signal to the switch unit 202 while transmitting the 5-way transmit signal, where the first trigger signal indicates the 5 The transmission start time and the transmission end time of the road transmission signal, so that the switching unit 202 receives the 5-way transmission signal within a time period indicated by the first trigger signal. For example, the start time indicated by the first trigger signal is 6:00, and the end time is 6:05, and the switch unit 202 performs reception of the signal in the period of 6:00-6:05.

Step 302: The switch unit divides the 5-way transmit signal into three sets of transmit signals, and respectively sends the signals to the channel emulator. Specifically, since Τ=5, the 5-channel transmit signals are divided into three groups.

A transmitting signal, wherein two sets of transmitting signals include two transmitting signals, and one set of transmitting signals includes one transmitting signal, and the three sets of transmitting signals are respectively: [ _Xl , _X2 f , [x ₃ , x ₄ ' [χ ₅ ] , where Τ represents the transpose of the vector. It should be noted that, in order to ensure synchronous transmission of each group of three sets of transmit signals, the switch unit 202 may send the signal to the channel emulator 203 and the storage and merge unit 204 while transmitting each of the three sets of transmit signals. a second trigger signal, where the second trigger signal indicates a transmission start time and a transmission end time of each group of transmit signals, so that the channel emulator 203 and the storage and combining unit 204 receive the corresponding time period indicated by the second trigger signal. signal. For example, the start time indicated by the second trigger signal is 7:00, and the end time is 7:05, then the channel emulator 203 and the storage merging unit 204 perform signal reception in the period of 7:00-7:05.

Step 303: The channel emulator obtains the channel models corresponding to the three sets of transmit signals and all the receive antennas, respectively.

The channel model of the ΜΙΜΟ system in the embodiment of the present invention is Η, Η is an Rx T Moment, H is

The element in the jth column of the i th row represents the channel between the transmitting antenna j and the receiving antenna i. Therefore, in this embodiment, H is a matrix of 4×5, and the H is:

Therefore, the channel models corresponding to the three sets of transmitted signals corresponding to all receiving antennas are: ^H l , ^H 2 , H3 _o are as follows:

Step 304: The channel emulator performs at least one channel emulation processing on each of the three sets of transmit signals according to the channel models corresponding to the three sets of transmit signals and all the receive antennas to obtain four receive signals.

The number of times the channel emulator performs channel emulation processing on each set of transmitted signals may be determined according to the number of output ports of the receiving antenna and channel emulator 203. Since 0=3, R=4, each group of transmitted signals performs 2 channel emulation processing. Specifically, the three sets of channel models Hi, H ₂ , H ³ are grouped such that each of the sets of the transmit signals corresponds to two sets of subchannel models, wherein each set of the two sets of subchannel models corresponding to the transmit signal has one The group subchannel model includes channels corresponding to three receiving antennas, and there is a set of subchannel models including a channel corresponding to one receiving antenna, where 1 is the remainder of the 4 divided by 3

Finally, six sets of subchannel models are obtained, namely ^H ii, Hi2, H21, H22

^H 31, H ₃ 2, are as follows:

H,

^Η , 2 = [Κ Κ.

f ₃ f ₄

Η 〃 h23 〃 h24 H 21― [3⁄43 h _AA ]

The channel emulator performs channel emulation processing on each set of the transmit signals according to the two sets of subchannel models corresponding to each set of the transmit signals to obtain a processed signal corresponding to each set of the transmit signals. For example, for the same set of transmit signals, the channel emulator can obtain 2 times, and the acquired transmit signals are separately subjected to channel emulation processing with 2 sets of subchannel models to obtain 2 sets of processed signals, for example, the channel emulator obtains 2 times respectively [ _{Χ 1} , _{Χ 2} ] ^Τ , according to the mathematical model formula of the received signal: y = Hx + n to obtain _two sets of processed signals, in the mathematical model formula of the received signal, y represents the received signal, H represents the channel model, X represents the transmitted signal, n represents channel noise and interference. Since the two subchannel models corresponding to [ _X1 , _X2 ] ^T are:

The corresponding received signals obtained by the two sets of processed signals, ie, the channel simulator, are:

Where "2 and the noise interference when the transmitted signal is processed by the channel emulator,

The channel emulator obtains 2 times [ _{Χ 3} , _{Χ 4} ] respectively, and obtains 2 sets of processed signals according to the mathematical model formula of the received signal: x + n, due to the two sets of subchannel models corresponding to [ _{Χ 3} , _{Χ 4} ] ^Τ

Η, 〃 h23 〃 h24 and ^H 22 = [ h

The corresponding received signals obtained by the two groups of processed signals, that is, the channel simulator simulation are:

Where η ₂ and ( ) are noise interferences when the transmitted signal is processed by the channel emulator, The channel emulator obtains 2 times |^ ₅ ] respectively, and obtains two sets of processed signals according to the mathematical model formula of the received signal: y = Hx + ⁿ , since the two sets of subchannel models corresponding to [ _X5 ] are

And ₃₂ = [

Therefore, the corresponding received signals obtained by the two sets of processed signals, that is, the channel simulator simulation, are

And [ 5 ]( ) + ("4 )=

"1

" ₂ and (;) are noise interferences when the transmitted signal is processed by the channel emulator. In practical applications, the process of repeatedly acquiring the same set of transmitted signals for n times may pass the same set of transmitted signals to the channel emulator through the switching unit 202. 303 Repeatedly send h implementations.

Step 305: The channel emulator sends the processed signal to the storage merging unit. It should be noted that the transmission of the processed signal is sent by a packet, and the number of signals in each group is less than or equal to the number of output ports of the channel emulator.

Step 306: The storage and combining unit combines the signals belonging to the same receiving antenna in the processed signal to obtain four received signals.

Specifically, the signals obtained by channel emulation processing on the channels corresponding to the same receiving antenna in the processed signals corresponding to all the transmitted signals may be combined to obtain four received signals. The processed signal is:

The channel emulation numbers are combined in the processed signal through the channel corresponding to the same receiving antenna to:

Step 307: The storage and combining unit sends the 4-channel receiving signal to the receiving device.

The four channels of receiving signals are y-

It should be noted that, in order to ensure synchronous transmission of four received signals, the storage and combining unit 204 may send a third trigger signal to the receiving device 205 while transmitting the four received signals, where the third trigger signal indicates four paths. The transmission start time and the transmission end time of the received signal are received so that the receiving device 205 receives the corresponding signal within the time period indicated by the third trigger signal. For example, the start time indicated by the third trigger signal is 8:00, and the end time is 8:05, and the receiving device 205 receives the signal in the period of 8:00-8:05.

The embodiment of the present invention assumes that Τ=9, 1=3, 0=2, and R=4, and the specific ΜΙΜΟ test method is as shown in FIG. 4, including:

Step 401: The transmitting device generates 9 channels of transmit signals and sends them to the switch unit. In the embodiment of the present invention, the 9-channel transmitting signals are respectively set to ₃ , ΧΑ,

Step 402: The switch unit divides the 9-channel transmit signals into three sets of transmit signals, and respectively sends the signals to the channel emulator. Specifically, since T=9, 1==3, the 9-channel transmit signal is divided into three sets of transmit signals, and each of the three sets of transmit signals includes three transmit signals. The three groups of transmitting signals are: [ _Χ1 , _Χ ₂ , _{Χ 3} ] , [ χ 3 , Χ 4 , Χ 6 [Χ 7, Χ 8, Χ 9] , where

Τ indicates the transpose of the vector. Step 403: The channel emulator obtains the channel models corresponding to the three sets of transmit signals and all the receive antennas, respectively.

In this embodiment, Η is a 4 X 9 matrix, and the Η is:

- K

Η

Therefore, the obtained three sets of transmit signals correspond to the channel models corresponding to the three receive antennas: ^Η ι, ^Η 2, Η _3ο are as follows:

Step 404: The channel emulator performs at least one channel emulation processing on each of the three sets of transmit signals according to a channel model corresponding to all the receive antennas to obtain a processed signal.

Since 0=2 and R=4, each group of transmitted signals performs 2 channel emulation processing. Specifically, three sets of channel models Hi, ^H 2, ^H3 are grouped so that each set of the transmitted signals corresponds to two sets of subchannel models. The two sets of subchannel models corresponding to each set of the transmit signals include channels corresponding to two receive antennas, and finally, six sets of subchannel models are obtained. They are Hii, Hi2, H21, H22, H31, H32, respectively, as follows:

H, Η.

H,

〃38 〃 h39 "

— " h27 〃 h28 〃 h29 — K K_

Therefore, the channel emulator performs two channel emulation processing on each of the three sets of transmit signals according to the channel models corresponding to the three sets of transmit signals and all the receive antennas, and the processed signals are:

Step 405: The channel emulator sends the processed signal to the storage merging unit. Step 406: The storage and combining unit combines the signals belonging to the same receiving antenna in the processed signal to obtain four received signals.

Combining the signals obtained by channel emulation processing on the channels corresponding to the same receiving antenna in the processed signal is combined into:

y -

Step 407: The storage and combining unit sends the four channels of receiving signals to the receiving device.

The 4-way received signal is y - y ₃

In the prior art, in the channel emulator, since the transmitting device will transmit all signals Deficit

The input port of the channel emulator is sent to the receiving antenna of the receiving device from the output port of the channel emulator after being processed by the channel emulator. In this embodiment, since all the transmitting signals are, 3, X4, X ₅ , the corresponding channel model is:

Therefore based on the mathematical model of the received signal: y

y =

In the channel simulation process, the amount of data to be calculated is large, and the calculation process is complicated. However, in the embodiment of the present invention, the received signal is processed by combining the processed signals, thereby reducing the computational complexity and simplifying the channel simulation. The process of processing, at the same time, can reduce the number of input ports and/or output ports of the channel emulator, thereby reducing manufacturing costs, and thus the volume of the entire channel emulator can be correspondingly reduced.

It should be noted that the sequence of the steps of the MIMO test method provided by the embodiment of the present invention may be appropriately adjusted, and the steps may be correspondingly increased or decreased according to the situation. Anyone skilled in the art may be within the technical scope disclosed by the present disclosure. Methods that can be easily conceived of variations are encompassed within the scope of the present invention and therefore will not be described.

The MIMO test method provided by the embodiment of the present invention obtains k sets of transmit signals by grouping T transmit signals, and groups each of the k sets of transmit signals according to a channel model corresponding to the k sets of transmit signals and all receive antennas. The transmitting signal is subjected to at least one channel emulation processing to obtain an R channel receiving signal, so that the channel emulation process is performed for the transmitting signal packet, and the channel emulation is performed for all the transmitting signals relative to the prior art. Really get all the output signals, effectively reducing the complexity and cost of the channel emulator.

The embodiment of the present invention provides a channel emulator 50, as shown in FIG. 5, comprising: an obtaining unit 501, configured to acquire a T-channel transmitting signal, where T is an integer and ≥1. The dividing unit 502 is configured to divide the T-channel transmit signal acquired by the acquiring unit 501 into k-group transmit signals, where each set of the transmit signals includes at least one transmit signal, where k is an integer, and >1 or = 1.

The simulation unit 503 is configured to perform h-channel channel simulation processing on each group of the transmission signals obtained by the obtaining the dividing unit 502 to obtain a total m-group processed signal, where the h and the m are integers and ≥1. m = kxh _o

The merging unit 504 is configured to combine the m processed signals by the simulation unit 503 to obtain an R channel receiving signal, where R is an integer and ≥1.

In this way, the dividing unit obtains the k group transmitting signals by grouping the T channel transmitting signals, and the simulation unit respectively performs h channel simulation processing on each group of the transmitting signals to obtain a total m group processed signals, so that the channel simulation process is For the transmission signal grouping, the channel simulation is performed for all the transmitted signals to obtain all the output signals, which effectively reduces the complexity and cost of the channel emulator.

The dividing unit 502 is specifically configured to:

When the T can divide I, the T-channel transmit signal is divided into k sets of transmit signals, and each set of the transmit signals includes one transmit signal, where I is the number of input ports of the channel emulator, <Γ or /=Γ; when the Τ cannot divide I, the cpu transmit signal is divided into k sets of transmit signals, wherein there are k-1 sets of transmit signals including 1 transmit signals, and a set of transmit signals includes M Transmitting a signal, the M being the remainder of the T divided by the I,

The result of showing the % is rounded up, and the simulation unit 503 is specifically configured to:

Obtaining respectively a channel model corresponding to the k sets of transmit signals and all receive antennas Performing m channel simulation processing on each of the k sets of transmitted signals according to the k-group transmit signal and the channel model corresponding to all the receive antennas to obtain m sets of processed signals.

The simulation unit 503 is specifically configured to:

When the R is divisible by 0, the k sets of transmit signals are grouped with channel models corresponding to all receive antennas such that each set of the transmit signals corresponds to an h group of subchannel models, and each set of the subchannel models includes and The channel corresponding to the receiving antenna, the 0 is the number of output ports of the channel emulator, 0 < i? or 0 = i?,

The simulation unit 503 is specifically configured to:

When the R cannot divide by 0, grouping the k sets of transmit signals with channel models corresponding to all receive antennas, so that each set of the transmit signals corresponds to an h group of subchannel models, where each set of the transmit signals corresponds to In the h group subchannel model, there are h-1 group subchannel models including channels corresponding to 0 receiving antennas, and a set of subchannel models including channels corresponding to N receiving antennas, where N is the R divided by The remainder of 0,

The m-process processed signal is composed of the h-group processed signals corresponding to each set of the transmit signals, and the simulation unit 503 is specifically configured to:

The X obtained according to the ith acquired transmission signal of the Xth group of transmitted signals The group transmit signal corresponds to the i-th sub-channel model in the h-group sub-channel model, and the channel is simulated according to the i-th sub-channel model. The ith group processed signal corresponding to the Xth group transmission signal.

The merging unit 504 is specifically configured to:

When the h is equal to 1, the signals processed by the m group of channels are arranged into an R channel receiving signal in the order of receiving antennas;

And when the h is greater than 1, the signals obtained by channel emulation processing on the channels corresponding to the same receiving antenna in the m channel processed signals are added, and the added signals are arranged in the order of the receiving antennas. The R channel receives the signal.

The embodiment of the present invention provides a MIMO test system 60, as shown in FIG. 6, including: a channel emulator 601, the channel emulator 601 is configured to acquire a T-channel transmit signal, where T is an integer, and ^≥1; Dividing the T-channel transmit signal into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k being an integer, and > 1 or ^ = 1; respectively performing h signals for each set of the transmit signals The sub-channel emulation process obtains a total of m sets of processed signals, the h and the m are integers and ≥1, m = k - the _m sets of processed signals are combined to obtain R-channel received signals, and the R is an integer. And ^? ≥ 1. The specific structure of the channel emulator 601 is the same as that of the channel emulator 50 of FIG.

The transmitting device 602 is configured to send the T channel transmission signal to the channel emulator. The receiving device 603 is configured to receive an R channel receiving signal sent by the channel emulator. In this way, the channel emulator obtains k sets of transmit signals by grouping the T transmit signals, and performs h channel emulation processing on each set of the transmit signals respectively to obtain a total m sets of processed signals, so that the channel emulation process is directed to Transmitted by signal grouping, channel simulation is performed for all transmitted signals relative to the prior art to obtain all output signals, which effectively reduces the complexity and cost of the channel emulator.

It should be noted that the specific structure of the MIMO test system in the embodiment of the present invention may also be as shown in FIG. 2, and the present invention will not be described again.

The embodiment of the present invention provides a channel emulator 70, as shown in FIG. 7, comprising: a processor 701, the processor is configured to:

Obtaining a T-channel transmit signal, where T is an integer, and ≥1; The T-channel transmit signal is divided into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k being an integer, and > 1 or = 1;

Performing h channel simulation processing for each set of the transmitted signals respectively to obtain a total of m sets of processed signals, wherein h and the m are integers and ≥1, m = kxh - combining the processed signals of the m groups The R channel receives the signal, the R is an integer, and ^? ≥ 1.

In this way, the processor obtains k sets of transmission signals by grouping the T-channel transmission signals, and performs h-channel channel simulation processing on each of the groups of the transmission signals to obtain a total of m-group processed signals, so that the channel simulation process is for transmitting. The signal grouping is performed, and the channel simulation is performed for all the transmitted signals to obtain all the output signals, which effectively reduces the complexity and cost of the channel emulator.

Further, the processor 701 is specifically configured to:

When the T can divide I, the T-channel transmit signal is divided into k sets of transmit signals, and each set of the transmit signals includes one transmit signal, where I is the number of input ports of the channel emulator, < Γ or /=Γ; when the Τ cannot divide I, the cpu transmit signal is divided into k sets of transmit signals, wherein there are k-1 sets of transmit signals including 1 transmit signals, and a set of transmit signals includes M Transmitting a signal, the M being the remainder of the T divided by the I,

The result of the representation of % is rounded up. The processor 701 is specifically configured to:

The processor 701 is specifically configured to:

When the R can divide by 0, the k sets of transmit signals are corresponding to all receive antennas. The channel models are grouped such that each set of the transmitted signals corresponds to an h group of subchannel models, each set of the subchannel models includes a channel corresponding to 0 receiving antennas, and the 0 is the number of output ports of the channel emulator, 0 < i ? or 0=i?,

The processor 701 is specifically configured to:

The m-process processed signal is composed of the h-group processed signals corresponding to each set of the transmit signals, and the processor 701 is specifically configured to:

The processor 701 is specifically configured to:

When the h is equal to 1, the m-channel channel processed signal is received according to the receiving day. The order of the lines is arranged to receive signals from the R channel;

An embodiment of the present invention provides a MIMO test system, including:

a channel emulator, the channel emulator is configured to acquire a T-channel transmit signal, where T is an integer, and ^≥1; dividing the T-channel transmit signal into k-group transmit signals, each set of the transmit signals including at least one way Transmitting a signal, the k is an integer, and >1 or = 1; performing h channel simulation processing on each of the sets of the transmitted signals respectively to obtain a total of m sets of processed signals, wherein h and the m are integers and ≥1 m = kxh - The m sets of processed signals are combined to obtain an R way received signal, the R being an integer, and ^? ≥ 1.

And a transmitting device, configured to send the T channel transmission signal to the channel emulator. And a receiving device, configured to receive an R channel receiving signal sent by the channel emulator. It should be noted that the specific structure of the MIMO test system in the embodiment of the present invention may also be as shown in FIG. 2, and the present invention will not be described again. The embodiment of the present invention provides a transmitting device 80, as shown in FIG. 8, comprising: a generating unit 801, configured to generate a T-channel transmitting signal, where T is an integer, and ≥1; a dividing unit 802, configured to The T-channel transmit signal is divided into k sets of transmit signals, each set of the transmit signals includes at least one transmit signal, the k is an integer, and >1 or k = 1;

a transmitting unit 803, configured to send the k sets of transmit signals to a channel emulator, so that the channel emulator performs h channel emulation processing on each set of the transmit signals, respectively, to obtain a total m sets of processed signals, where the h And the m is an integer and ≥1, m = kxh _o, the dividing unit 802 is specifically configured to:

When the T can divide I, the T-channel transmit signal is divided into k sets of transmit signals, and each set of the transmit signals includes one transmit signal, where I is the number of input ports of the channel emulator, <Γ or /=Γ; when the Τ cannot divide I, the cpu transmit signal is divided into k sets of transmit signals, Wherein, there are k-1 groups of transmitted signals including one transmitted signal, and a set of transmitted signals including M k

Transmitted signals, the M being the remainder of the T divided by the I,

Indicates that the result of % is rounded up. The embodiment of the present invention provides a receiving device 90. As shown in FIG. 9, the method includes:

The receiving unit 901 is configured to receive the m sets of processed signals sent by the channel emulator, where the m sets of processed signals are obtained by the channel emulator according to respectively performing h channel emulation processing on each set of the transmitted signals,

Indicates that the result of % is rounded up, the 0 is the number of output ports of the channel emulator, the R is an integer, and ?≥1; the merging unit 902 is configured to combine the m groups of processed signals to obtain R The road receives the signal, the R is an integer, and ^? ≥ 1.

The embodiment of the present invention provides a MIMO test system 100, as shown in FIG. 10, including:

a transmitting device 1001, the transmitting device 1001 generates a T-channel transmitting signal, where T is an integer, and ^≥1; dividing the T-channel transmitting signal into k-group transmitting signals, and each group of the transmitting signals includes at least one transmitting a signal, the k is an integer, and >ι or 1; transmitting the k sets of transmit signals to a channel emulator, so that the channel emulator separately performs h channel emulation processing on each set of the transmit signals to obtain a total of m Group processed signal, the h and the m are integers and A≥l, m = kxh

The receiving device 1002 is configured to receive the m sets of processed signals sent by the channel emulator, where the m sets of processed signals are obtained by the channel emulator according to respectively performing h channel emulation processing on each set of the transmitted signals,

The 0 is the number of output ports of the channel emulator, the R is an integer, and ?≥l; After the group processing, the signals are combined to obtain an R channel receiving signal, the R is an integer, and ?≥1; the channel emulator 1003, the channel emulator 1003 is configured to perform h channel emulation processing on each group of the transmitting signals respectively. Obtaining a total of m sets of processed signals, the h and the m being integers and ≥1, m = kxh _o

An embodiment of the present invention provides a transmitting apparatus 110, as shown in FIG. 11, including: a processor 1101, configured to generate a T-channel transmitting signal, where T is an integer, and ≥1; dividing the T-channel transmitting signal into The k sets transmit signals, each set of the transmit signals includes at least one transmit signal, the k being an integer, and >1 or =1;

a transmitter 1102, configured to send the k sets of transmit signals to a channel emulator, so that the channel emulator performs h channel emulation processing on each set of the transmit signals, respectively, to obtain a total m sets of processed signals, where the h And the m is an integer and ≥1, = kxh _{o The} processor 1101 is specifically configured to:

When the T can divide I, the T-channel transmit signal is divided into k sets of transmit signals, and each set of the transmit signals includes one transmit signal, and the I is the number of input ports of the channel emulator, ι<τ , ι=τ;

When the Τ cannot divide I, the cpu transmit signal is divided into k sets of transmit signals, wherein the k-1 set transmit signal includes 1 transmit signal, and the set of transmit signals includes M transmit signals. M is the remainder of dividing T by the I,

The embodiment of the present invention provides a receiving device 120, as shown in FIG. 12, including: a receiver 1201, configured to receive m groups of processed signals sent by a channel emulator, where the m groups of processed signals are channel emulation The device is obtained by performing h channel simulation processing on each of the groups of the transmitted signals,

The 0 is the number of output ports of the channel emulator, the R is an integer, and ?≥l; The processor 1202 is configured to combine the m sets of processed signals to obtain an R way receive signal, where R is an integer, and ^?≥1.

An embodiment of the present invention provides a MIMO test system, including:

a transmitting device, the transmitting device generates a T-channel transmitting signal, where T is an integer, and ≥1; dividing the T-channel transmitting signal into k-group transmitting signals, and each group of the transmitting signals includes at least one transmitting signal, Said k is an integer, and >1 or =1; transmitting the k sets of transmit signals to the channel emulator, so that the channel emulator separately performs h channel emulation processing on each set of the transmit signals to obtain a total m set of processing a post signal, the h and the m being integers and ≥1, m = kxh- receiving means for receiving m sets of processed signals transmitted by the channel emulator, wherein the m sets of processed signals are channel emulated Obtained according to h channel simulation processing for each group of the transmitted signals,

The R is the number of output ports of the channel emulator, the R is an integer, and ? ≥ l; the m processed signals are combined to obtain an R received signal, the R is an integer, and ? ≥ l; a channel emulator, configured to perform h channel emulation processing on each of the sets of the transmit signals to obtain a total of m sets of processed signals, wherein h and the m are integers and /≥1, m=kxh. A person skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

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

The units described as separate components may or may not be physically separated, and the components displayed as the units may or may not be physical units, and may be located in one place or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the embodiment of the present embodiment.

In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of hardware plus software functional units.

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 claims.

Claims

claims

1. A multiple-input multiple-output MIMO test method, which is characterized by: acquiring T-channel transmission signals, where T is an integer and ≥1;

Divide the T-channel transmission signals into k groups of transmission signals, each group of the transmission signals includes at least one transmission signal, the k is an integer, and A>1 or =1; perform h on each group of the transmission signals respectively A total of m groups of processed signals are obtained through sub-channel simulation processing, the h and the m are integers and / 2 ≥ 1, m = kxh; the m groups of processed signals are combined to obtain R-channel received signals, and the R is an integer, and ?≥l.

2. The method according to claim 1, characterized in that,

The division of the T-channel transmission signals into k groups of transmission signals includes:

When T is divisible by I, the T-channel transmission signals are divided into k groups of transmission signals, and each group of transmission signals includes I transmission signals, where I is the number of input ports of the channel simulator, i<τ ,ι=τ;

When the T cannot be divided evenly by I, the T transmission signals are divided into k groups of transmission signals, where there are k-1 groups of transmission signals including 1 transmission signals, and there is a group of transmission signals including M transmission signals, so Said M is the remainder of said τ divided by said I, —

Indicates that the result of the pair is rounded up.

3. The method according to claim 1 or 2, characterized in that,

Perform h channel simulation processing on each group of the transmitted signals to obtain m groups of processed signals, including:

Obtain the channel models corresponding to the k groups of transmit signals and all receiving antennas respectively; perform h channel simulations for each group of the k groups of transmit signals according to the channel models corresponding to the k groups of transmit signals and all receive antennas. After processing, m groups of processed signals are obtained.

4. The method according to claim 3, characterized in that,

According to the channel models corresponding to the k groups of transmit signals and all receiving antennas, h times of channel simulation processing are performed on the k groups of transmit signals to obtain m groups of processed signals, including: When the R can be divided by 0, all the The k groups of transmitted signals are grouped with channel models corresponding to all receiving antennas, such that each group of the transmitted signals corresponds to h groups of sub-channel models, and each group of the sub-channel models includes channels corresponding to 0 receiving antennas, and the 0 is Number of output ports of the channel emulator, 0 < i? or 0=i?,

According to h groups of sub-channel models corresponding to each group of the transmitted signals, channel simulation processing is performed on each group of the transmitted signals to obtain m groups of processed signals.

5. The method according to claim 3, characterized in that,

According to the channel model corresponding to the k groups of transmit signals and all receiving antennas, h times of channel simulation processing is performed on each group of the k groups of transmit signals to obtain m groups of processed signals, including:

When the R is not divisible by 0, the k groups of transmit signals and the channel models corresponding to all receiving antennas are grouped so that each group of the transmit signals corresponds to h groups of sub-channel models, where, each group of the transmit signals corresponds to Among h groups of sub-channel models, there are h-1 groups of sub-channel models including channels corresponding to 0 receiving antennas, and there is a group of sub-channel models including channels corresponding to N receiving antennas, where N is the R divided by The remainder of 0,

Channel simulation processing is performed on each group of the transmission signals according to h groups of sub-channel models corresponding to each group of the transmission signals to obtain m groups of processed signals.

6. The method according to claim 4 or 5, characterized in that,

The m groups of processed signals are composed of h groups of processed signals corresponding to each group of the transmitted signals. Performing channel simulation processing on each group of the transmission signals according to h groups of sub-channel models corresponding to each group of the transmission signals to obtain m groups of processed signals includes:

Repeat the acquisition of the X-th group of transmitted signals h times, said ≤χ≤;

The X-th group of transmission signals obtained according to the i-th transmission signal obtained in the X-th group of transmission signals corresponds to the i-th group of sub-channel models in the h group of sub-channel models, and the 1≤ ≤/;;

Perform channel simulation processing on the i-th acquired transmission signal according to the i-th group of sub-channel models to obtain the i-th group of processed signals corresponding to the X-th group of transmission signals.

7. The method according to any one of claims 1 to 6, characterized in that, combining m groups of channel-processed signals to obtain R-channel received signals includes: when h is equal to 1, Arrange the processed signals of the m groups of channels into R channels of receiving signals according to the order of receiving antennas;

When h is greater than 1, the signals obtained by channel simulation processing through the channels corresponding to the same receiving antenna among the m groups of channel processed signals are added, and the added signals are arranged in the order of the receiving antennas. R channel receives the signal.

8. A channel emulator, characterized by including:

The acquisition unit is used to acquire T-channel transmission signals, and T is an integer, and ≥ 1; the dividing unit is used to divide the T-channel transmission signals acquired by the acquisition unit into k groups of transmission signals, each group of which The transmission signal includes at least one transmission signal, the k is an integer, J > 1 or A = l; the simulation unit is used to perform h channel simulation processing on each group of the transmission signals to obtain a total of m groups of processed signals, so The h and the m are integers and /≥1, m = k x h; a merging unit is used to combine the m groups of processed signals to obtain R-channel received signals, where the R is an integer, and ?≥l.

9. The channel emulator according to claim 8, characterized in that,

The dividing unit is specifically used for:

When T is divisible by I, the T-channel transmission signals are divided into k groups of transmission signals, and each group of transmission signals includes I transmission signals, where I is the number of input ports of the channel emulator, I < T , I=T;

When the T cannot be divided evenly by I, the T-channel transmission signals are divided into k groups of transmission signals, where there are k-1 groups of transmission signals including 1 transmission signals, and there is a group of transmission signals including M transmission signals, so The M is the remainder of the τ divided by the I,

Indicates that the result of the pair is rounded up.

10. The channel emulator according to claim 8 or 9, characterized in that the simulation unit is specifically used for:

1 1. The channel emulator according to claim 10, characterized in that,

The simulation unit is specifically used for:

When the R is divisible by 0, the k groups of transmit signals and the channel models corresponding to all receiving antennas are grouped so that each group of the transmit signals corresponds to h groups of sub-channel models, and each group of the sub-channel models includes and 0 The channel corresponding to the receiving antenna, the 0 is the number of output ports of the channel simulator, 0 < R

12. The channel emulator according to claim 10, characterized in that,

The simulation unit is specifically used for:

When the R is not divisible by 0, group the k groups of transmit signals and the channel models corresponding to all receiving antennas so that each group of the transmit signals corresponds to h groups of sub-channel models, where, Among h groups of sub-channel models corresponding to each group of the transmitted signals, there are h-1 groups of sub-channel models including channels corresponding to 0 receiving antennas, and there is a group of sub-channel models including channels corresponding to N receiving antennas.

For the corresponding channel, the N is the remainder of the R divided by the 0,

13. The channel emulator according to claim 11 or 12, wherein the m groups of processed signals are composed of h groups of processed signals corresponding to each group of the transmitted signals,

The simulation unit is specifically used for:

The X-th group of transmission signals obtained according to the i-th transmission signal obtained in the X-th group of transmission signals corresponds to the i-th group of sub-channel models in the h group of sub-channel models, and the ≤ ≤ /;

14. The channel emulator according to any one of claims 8 to 13, characterized in that,

The merging unit is specifically used for:

When h is equal to 1, the signals processed by the m groups of channels are arranged into R channels to receive signals in the order of receiving antennas;

15. A MIMO test system, characterized in that it includes: the channel simulator according to any one of claims 8 to 14, the channel simulator is used to obtain T-channel transmission signals, the T is an integer, and ≥1; Divide the T-channel transmission signals into k groups of transmission signals, each group of the transmission signals includes at least one transmission signal, the k is an integer, and A > 1 or A = 1; For each group of the transmission signals, respectively Transmit signals to perform channel simulation h times After true processing, a total of m groups of processed signals are obtained, the h and the m are integers and /≥1, m = kxh; the m groups of processed signals are combined to obtain R channels of received signals, the R is an integer, and ?≥l; A transmitting device, used to send the T-channel transmit signal to the channel emulator; A receiving device, used to receive the R-channel receive signal sent by the channel emulator.

16. A channel emulator, characterized by including:

Processor, the processor is used for:

Obtain T transmission signals, the T is an integer, and ≥ 1; Divide the T transmission signals into k groups of transmission signals, each group of the transmission signals includes at least one transmission signal, the k is an integer, and A >1 or =1; Perform h channel simulation processing on each group of the transmitted signals to obtain a total of m groups of processed signals, the h and the m are integers and / 2≥1, m = kxh; m groups of processed signals are combined to obtain R-channel received signals, where R is an integer, and ?≥l.

17. The channel emulator according to claim 16, characterized in that,

The processor is specifically used for:

When T is divisible by I, the T-channel transmission signals are divided into k groups of transmission signals, and each group of transmission signals includes I transmission signals, where I is the number of input ports of the channel simulator, i<τ , i = τ; When the T cannot be divided evenly by I, the T transmission signals are divided into k groups of transmission signals, where there are k-1 groups of transmission signals including I transmission signals, and there is a group of transmission signals including M

transmit signals, the M is the remainder of the τ divided by the I,

Indicates that the result of % is rounded up.

18. The channel emulator according to claim 16 or 17, characterized in that, The processor is specifically configured to: respectively obtain the channel models corresponding to the k groups of transmit signals and all receiving antennas; and to obtain each of the k groups of transmit signals according to the channel models corresponding to the k groups of transmit signals and all receive antennas. A group of transmitted signals is subjected to channel simulation processing h times to obtain m groups of processed signals.

19. The channel emulator according to claim 18, characterized in that,

The processor is specifically configured to: when the R is divisible by 0, group the k groups of transmission signals with channel models corresponding to all receiving antennas so that each group of the transmission signals corresponds to h groups of sub-channel models, and each group The sub-channel model includes channels corresponding to 0 receiving antennas, where 0 is the number of output ports of the channel simulator, 0 < i? or 0=i?,

20. The channel emulator according to claim 18, characterized in that,

The processor is specifically configured to: when the R is not divisible by 0, group the k groups of transmit signals and channel models corresponding to all receiving antennas so that each group of the transmit signals corresponds to h groups of sub-channel models, where, Among the h groups of sub-channel models corresponding to each group of the transmitted signals, there are h-1 groups of sub-channel models including channels corresponding to 0 receiving antennas, and there is a group of sub-channel models including N receiving antennas.

Corresponding channel, the N is the remainder of the R divided by the 0, '0 Perform channel simulation processing on each group of the transmission signals according to h groups of sub-channel models corresponding to each group of the transmission signals to obtain m groups of processed Signal.

21. The channel emulator according to claim 19 or 20, characterized in that, The m groups of processed signals are composed of h groups of processed signals corresponding to each group of the transmitted signals,

The processor is specifically used for:

22. The method according to any one of claims 16 to 21, characterized in that,

The processor is specifically used for:

23. A MIMO test system, characterized by including:

The channel simulator according to any one of claims 16 to 22, the channel simulator is used to obtain T-channel transmission signals, and the T is an integer, and ≥ 1; the T-channel transmission signals are divided into k groups Transmit signals, each group of the transmission signals includes at least one transmission signal, and the k is an integer, and > 1 or = 1; perform h channel simulation processing on each group of the transmission signals to obtain a total of m groups of processed signals, The h and the m are integers and /≥1, m = k x h; the m groups of processed signals are combined to obtain R-channel received signals, the R is an integer, and ?≥l;

The transmitting device is used to send the T-path transmission signal to the channel emulator;

The receiving device is used to receive the R-channel receiving signal sent by the channel emulator.

24. A launching device, characterized in that it includes:

A generation unit, used to generate T-channel transmission signals, where T is an integer, and ≥ 1; a dividing unit, used to divide the T-channel transmission signals into k groups of transmission signals, each group of the transmission signals including at least one transmission signal signal, the k is an integer, and i or = 1; a transmitting unit, used to send the k group of transmit signals to the channel emulator, so as to facilitate the The channel simulator performs channel simulation processing on each group of the transmitted signals h times to obtain a total of m groups of processed signals, where the h and m are integers and /≥1, m =.

25. The launching device according to claim 24, characterized in that,

The dividing unit is specifically used for:

transmit signal, the M is the remainder of the T divided by the I,

The result is rounded up.

26. A receiving device, characterized in that it includes:

The receiving unit is configured to receive m groups of processed signals sent by the channel simulator, wherein the m groups of processed signals are obtained by the channel simulator by performing h channel simulation processes on each group of the transmitted signals,

The 0 is the number of output ports of the channel emulator, the R is an integer, and ?≥l; the merging unit is used to combine the m groups of processed signals to obtain R channels of received signals, the R is an integer, And ?≥l.

27. A MIMO test system, characterized by: including:

The transmitting device according to claim 24 or 25, the transmitting device generates T transmission signals, and T is an integer, and ≥ 1; the T transmission signals are divided into k groups of transmission signals, and each group of the transmission signals The signal includes at least one transmission signal, and k is an integer, and >1 or = 1; sending the k groups of transmission signals to the channel simulator, so that the channel simulator can separately Perform channel simulation processing h times on a group of the transmitted signals to obtain a total of m groups of processed signals, where h and m are integers and Λ≥1, m = kxh;

The receiving device according to claim 26, used to receive m groups of processed signals sent by the channel emulator, wherein the m groups of processed signals are processed by the channel emulator according to h times of channel processing on each group of the transmitted signals. Obtained by simulation processing,

Indicates that the result of % is rounded up, the 0 is the output port number of the channel emulator, the R is an integer, and ?≥l; The m groups of processed signals are combined to obtain the R-channel received signal, R is an integer, and ?≥l; channel simulator, the channel simulator is used to perform h channel simulation processing on each group of the transmitted signals to obtain a total of m groups of processed signals, the h and the m are integers And /^ 1, m kxh

28. A launching device, characterized in that it includes:

A processor, configured to generate T transmission signals, where T is an integer and ≥ 1; divide the T transmission signals into k groups of transmission signals, each group of the transmission signals includes at least one transmission signal, and the k is an integer, and >1 or = 1; the transmitter is used to send the k groups of transmission signals to the channel simulator, so that the channel simulator performs channel simulation processing on each group of the transmission signals h times to obtain a total m sets of processed signals, the h and the m are integers and /≥1, m =

29. The launching device according to claim 28, characterized in that,

The processor is specifically used for:

When T is divisible by I, the T-channel transmission signals are divided into k groups of transmission signals, and each group of transmission signals includes I transmission signals, where I is the number of input ports of the channel emulator, I<T, I=T;

When the T cannot be divided evenly by I, the T-channel transmission signals are divided into k signals. Among them, there are k-1 groups of transmission signals including 1 transmission signals, and there is a group of transmission signals including M transmission signals, and the M is the remainder of dividing τ by the I,

Indicates that the result of the pair is rounded up.

30. A receiving device, characterized in that it includes:

The receiver is used to receive m groups of processed signals sent by the channel simulator, wherein the m groups of processed signals are obtained by the channel simulator by performing h channel simulation processing on each group of the transmitted signals,

The 0 is the number of output ports of the channel emulator, the R is an integer, and ?≥l; the processor is used to combine the m groups of processed signals to obtain R channels of received signals, the R is an integer, And ?≥l.

31. A MIMO test system, characterized by including:

The transmitting device according to claim 28 or 29, the transmitting device generates T transmission signals, and T is an integer, and ≥ 1; the T transmission signals are divided into k groups of transmission signals, and each group of the transmission signals The signal includes at least one transmission signal, and k is an integer, and >1 or =1; sending the k groups of transmission signals to the channel simulator, so that the channel simulator performs h times on each group of transmission signals. A total of m groups of processed signals are obtained through channel simulation processing, and the h and m are integers J ≥ 1, m = kxh; The receiving device according to claim 30, is used to receive m groups of processed signals sent by the channel simulator. , wherein, the m groups of processed signals are obtained by a channel simulator performing h channel simulation processing on each group of the transmitted signals, expresses right The result of % is rounded up, the O is the number of output ports of the channel simulator, the R is an integer, and ?≥l; The m groups of processed signals are combined to obtain R-channel received signals, and the R is Integer, and ?≥l;

Channel simulator, the channel simulator is used to perform h channel simulation processing on each group of the transmitted signals to obtain a total of m groups of processed signals, where the h and the m are integers and /≥1, m = kxh.