CN109787698A - Probe radiation right-value optimization method and system when channel simulation in Multi probe darkroom - Google Patents
Probe radiation right-value optimization method and system when channel simulation in Multi probe darkroom Download PDFInfo
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Abstract
The embodiment of the invention provides probe radiates right-value optimization method and system when channel simulation in a kind of Multi probe darkroom, it include: that each position is obtained to the theoretical space correlation factor and real space correlation factor of upper point-to-point transmission for each position pair in multiple positions in Multi probe fully anechoic chamber when channel simulation；It solves and presets Optimized model, obtain the optimal solution of each probe average radiating power, to complete to probe radiates right-value optimization when channel simulation in Multi probe darkroom；Wherein, the objective function of the default Optimized model is that each position is minimum to the theoretical space correlation factor of upper point-to-point transmission and the difference of real space correlation factor.Multi probe darkroom system based on prefade synthetic technology, the optimization method of probe radiation weight in two-dimentional darkroom system is expanded in three dimension system, it is improved for probe radiation right-value optimization problem and supplements relevant constraint, obtained optimization problem is convex problem, can be solved by efficient convex optimized algorithm.
Description
Technical field
The present embodiments relate to field of communication technology, more particularly, in a kind of Multi probe darkroom when channel simulation
Probe radiation right-value optimization method and system.
Background technique
Multi probe fully anechoic chamber is the MIMO-OTA test method of mainstream, in the specific wireless channel of dark indoor simulation
Environment, and in the downlink reception data transfer rate for wherein measuring tested multi-antenna terminal, to assess measured terminal in particular channel ring
MIMO receptivity in border.
Dark indoor channel circumstance simulation is mainly by the probe and its rear end channel simulator for being located at different direction in darkroom
Device is completed, and system is by testing radiant power, delay of probe etc. in control different direction angle, so that each probe radiates
After signal is superimposed at darkroom center, can simulate has many characteristics, such as special angle power spectrum, power-delay, Doppler frequency shift
Multipath fading signal.
Channel simulation precision will have a direct impact on the accuracy of MIMO-OTA test result in Multi probe darkroom, and in darkroom
Channel simulation precision is generally dependent on destination channel model, and the number and position of popping one's head in darkroom and Multi probe radiation signal are excellent
Change algorithm etc..Current MIMO-OTA test mainly uses 3GPP SCME channel model, and in above-mentioned model, downlink multipath declines
Falling signal is divided into multiple clusters, and every cluster signal has specific power, delay, arrival bearing and angle spread, wherein owning
In the horizontal plane, incoming wave pitch angle is 0 degree and (defines horizontal plane in general channel model the arrival bearing of multipath signal
Pitch angle is 0 degree), and in the vertical dimension without angle spread.Since signal is distributed only over horizontal plane in this channel model
It is interior, therefore referred to as two dimensional channel model.Correspondingly, current Multi probe darkroom system is substantially " two-dimentional system ", secretly
Only arrange that a probe ring, each probe are distributed generally according to even angular intervals in room in the horizontal plane that pitch angle is 0 degree
On the probe ring.
Large volumes of channels measurement result shows that the arrival bearing of the downlink signal in real network might not concentrate on
In horizontal plane, but the angle spread with certain vertical dimensions, and the incoming wave pitch angle of signal is also and not always 0 degree,
It is therefore desirable to the simulation of three dimensional channel environment is realized in Multi probe MIMO-OTA system.
The research for three-dimensional full electric wave Multi probe darkroom is concentrated mainly on the following aspects in the prior art:
(1) several Multi probe darkroom configurations are proposed for three dimensional channel model, on the basis of original two-dimentional darkroom,
Also multiple test probes are arranged on non-zero pitch angle degree.Several heuristic tests of program simulation analysis are popped one's head in configuration sides
The three dimensional channel simulated performance of case, the results showed that the three-dimensional test system of arrangement test probe can be dark on three-dimensional sphere
Indoor effectively simulation three dimensional channel environmental characteristics, and different probe allocation plan simulation effects is different, but should
Scheme does not analyse in depth pop one's head in three-dimensional darkroom emission value optimization method and optimal probe positions.
(2) simulation study has been carried out for the Multi probe system based on planar wave synthesis technology, even if discovery uses spherical surface
Interior uniform probe allocation plan, for different pitching come the planar wave synthesis precision of wave angle also and non-isotropy.
(3) it is directed to the three-dimensional Multi probe darkroom based on prefade synthetic technology, has studied the optimization of Multi probe emission value
Algorithm, and emulated for several didactic test probe configurations, it compared under different test probe allocation plans
Channel simulation performance.
(4) it has studied based on two dimensional slice information multiple in three dimensional channel model and tested antenna radiation pattern information come close
The method for being tested antenna MIMO performance like simulation calculation.
But the research at present for three-dimensional full electric wave Multi probe darkroom is also more preliminary, is to propose some inspirations mostly
The three-dimensional darkroom probe allocation plan of formula, and there is no the generality of probe radiation weight in analyzing three-dimensional Multi probe darkroom
Principle.Therefore, it is urgent to provide probe radiates right-value optimization method when channel simulation in a kind of Multi probe darkroom.
Summary of the invention
The embodiment of the invention provides a kind of Multi probes for overcoming the above problem or at least being partially solved the above problem
Probe radiation right-value optimization method and system when channel simulation in darkroom.
The embodiment of the invention provides probe radiates right-value optimization when channel simulation in a kind of Multi probe darkroom for first aspect
Method, comprising:
For each position pair in multiple positions in Multi probe fully anechoic chamber when channel simulation, each position is obtained
Set the theoretical space correlation factor and real space correlation factor to upper point-to-point transmission；
Default Optimized model is solved, the optimal solution of each probe average radiating power is obtained, to complete to Multi probe darkroom
Probe radiation right-value optimization when middle channel simulation；Wherein, the objective function of the default Optimized model is each position to upper two
The difference of theoretical space correlation factor and real space correlation factor between point is minimum.
On the other hand the embodiment of the invention provides probe radiates right-value optimization when channel simulation in a kind of Multi probe darkroom
System, comprising:
First module, for for each position in multiple positions in Multi probe fully anechoic chamber when channel simulation
It is right, each position is obtained to the theoretical space correlation factor and real space correlation factor of upper point-to-point transmission；
Second module obtains the optimal solution of each probe average radiating power, for solving default Optimized model with complete
Probe radiation right-value optimization when channel simulation in pairs of Multi probe darkroom；Wherein, the objective function of the default Optimized model is
Each position is minimum to the theoretical space correlation factor of upper point-to-point transmission and the difference of real space correlation factor.
The embodiment of the invention provides include processor, communication interface, memory and bus for the third aspect, wherein processing
Device, communication interface, memory complete mutual communication by bus, and processor can call the logical order in memory,
Probe radiation right-value optimization method when channel simulation in Multi probe darkroom to execute first aspect offer.
The embodiment of the invention provides a kind of non-transient computer readable storage medium, the non-transient meters for fourth aspect
Calculation machine readable storage medium storing program for executing stores computer instruction, and the computer instruction makes the computer execute what first aspect provided
Probe radiation right-value optimization method when channel simulation in Multi probe darkroom.
Probe radiates right-value optimization method and is when channel simulation in a kind of Multi probe darkroom provided in an embodiment of the present invention
System, the Multi probe darkroom system based on prefade synthetic technology, by the optimization method of probe radiation weight in two-dimentional darkroom system
It expands in three dimension system, is improved for probe radiation right-value optimization problem and supplement relevant constraint, obtained optimization
Problem is convex problem, can be solved by efficient convex optimized algorithm.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will to embodiment or
Attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is this
Some embodiments of invention without creative efforts, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Probe radiation right-value optimization side when Fig. 1 is channel simulation in a kind of Multi probe darkroom provided in an embodiment of the present invention
The flow chart of method；
Fig. 2 is the schematic diagram of three-dimensional system of coordinate defined in Multi probe darkroom in the embodiment of the present invention；
Probe radiation right-value optimization system when Fig. 3 is channel simulation in a kind of Multi probe darkroom provided in an embodiment of the present invention
The structural block diagram of system；
Fig. 4 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention.
Specific embodiment
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical solution in the embodiment of the present invention is explicitly described, it is clear that described embodiment is this hair
Bright a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art exist
Every other embodiment obtained under the premise of creative work is not made, shall fall within the protection scope of the present invention.
Probe radiation right-value optimization side when Fig. 1 is channel simulation in a kind of Multi probe darkroom provided in an embodiment of the present invention
The flow chart of method, as described in Figure 1, comprising:
S101 obtains every each position pair in multiple positions in Multi probe fully anechoic chamber when channel simulation
Theoretical space correlation factor and real space correlation factor of a position to upper point-to-point transmission；
S102 solves default Optimized model, obtains the optimal solution of each probe average radiating power, to complete to visit to more
Probe radiation right-value optimization when channel simulation in head darkroom；Wherein, the objective function of the default Optimized model is each position
The difference of theoretical space correlation factor and real space correlation factor to upper point-to-point transmission is minimum.
Wherein, three-dimensional coordinate system has been used as shown in Fig. 2, defining in figure, wherein θ is used,Definition is bowed respectively
The elevation angle and horizontal azimuth, definition+Z-direction are θ=90 °, θ=0 ° on X/Y plane ,+X-axis correspondence+ Y-axis is corresponding。
In conventional two-dimensional channel model, channel arrival bearing is respectively positioned in X/Y plane, i.e., pitching angle theta is always 0 °；Three
It ties up in channel model, channel arrival bearing is by pitch angle and azimuthCommon definition, wherein -90 °≤θ≤90 °,。
When studying probe positions in Multi probe darkroom, think that darkroom center is located in coordinate origin, conventional two-dimensional is dark
Test probe ring is located in X/Y plane in room, and probe positions equally use pitch angle and azimuth in three-dimensional darkroomIt carries out
Definition.
Consider the Multi probe darkroom based on prefade synthetic technology, it is therefore desirable to which each test is visited in combined optimization darkroom
The average radiating power of head, i.e. radiant power weight, carry out the power perspective spectrum signature in simulated target channel circumstance.Optimization is visited
When head radiant power weight, spatial correlation factors are chosen as optimization aim, select multiple spatial positions in darkroom central area
It is right, each spatial position is calculated in theoretical channel circumstance to the spatial correlation factors between upper two o'clock, in optimization design darkroom
All probes radiation weights so that in darkroom in actual channel environment each spatial position to the space correlation between upper two o'clock
Result in the factor and theoretical environment is close as far as possible.
Probe radiates right-value optimization method, base when channel simulation in a kind of Multi probe darkroom provided in an embodiment of the present invention
In the Multi probe darkroom system of prefade synthetic technology, the optimization method of probe radiation weight in two-dimentional darkroom system is extended
Into three dimension system, is improved for probe radiation right-value optimization problem and supplement relevant constraint, obtained optimization problem
For convex problem, can be solved by efficient convex optimized algorithm.
In the above-described embodiments, the expression formula of the default Optimized model are as follows:
Wherein, Q=(q (β1,α1,d1),…,q(βN,αN,dN)), w=w1,…,wM)T,Λ=diag (cos θ1,…,cosθM), d be any spatial position to upper two o'clock it
Between distance be that β is any spatial position to the pitch angle of upper point-to-point transmission line vector, and α is the orientation of any spatial position pair
Angle, q (β1,α1,d1),…,q(βN,αN,dN) it is N number of space to corresponding vector, w1,…,wMIt is each in respectively M probe
The radiant power of probe, ρ are any spatial position to the theoretical space correlation factor between upper two o'clock, and θ is channel arrival bearing
Pitch angle, and N >=1, M >=1, i≤M.
Further, described to obtain each position to the theoretical space correlation factor of upper point-to-point transmission, it specifically includes:
The first spatial correlation factors expression formula is solved, the theoretical space correlation factor is obtained.
Further, described to obtain each position to the real space correlation factor of upper point-to-point transmission, it specifically includes:
Second space correlation factor expression formula is solved, the real space correlation factor is obtained.
Further, described to solve default Optimized model, the optimal solution of each probe average radiating power is obtained, specifically
Include:
Tool is solved using convex function to solve the default Optimized model, obtains each probe average radiation function
The optimal solution of rate.
Specifically, consider a spatial position pair in darkroom test area, distance between two points d, point-to-point transmission line
The pitch angle of vector is β, azimuth α, (β, α, d) will be used to indicate the spatial position pair.Assuming that the function of paper channel model
Rate angular spectrum isThen it is located at spatial position to spatial correlation factors between the receiving antenna in the two o'clock of (β, α, d)
It can be written as:
Wherein,WithIt is responded for receiving antenna in two o'clock.Due to unknown tested antenna radiation pattern, one
As assume receiving antenna be omnidirectional antenna, i.e.,And it is (θ, φ) that the two, which receives arrival bearing,
Phase difference is when plane waveWherein a·B indicates the inner product of vector a and b, and λ is wave
It is long, definition:
Spatial position is respectively indicated to the unit vector on line vector and space arrival bearing (θ, φ).Thus may be used
Any one spatial position is obtained to the spatial correlation factors between upper two o'clock are as follows:
Assuming that being disposed with M test probe in darkroom, angle position is respectivelyIn darkroom
Heart distance is R, and R be far longer than in the test zone of darkroom center selected spatial position to the distance between, definition vector w
=(w1,…,wM)TIndicate each probe average radiating power.If by the radiation function of all probes of orientation angles each in darkroom
Rate is considered as a kind of discrete power perspective spectrum, then uses and actually believe in the available darkroom of the derivation method similar with formula (3)
Road environment is in spatial position to the point-to-point transmission spatial correlation factors of (β, α, d) are as follows:
Wherein, definition vector q (β, α, d), i-th of element areDefinition vector Representation vector1 normFound out by formula (4), in vectorOn multiplied by any one be greater than zero scalar, will not influence correlation factorValue.It therefore can be to vectorReturned
One changes, and makes its 1 norm 1, then formula (4) becomes:
Wherein,
Select N number of spatial position to (β in the test zone of darkroom center1,α1,d1),…,(βN,αN,dN), by each position
It sets and vector ρ=(ρ is denoted as to the spatial correlation factors of upper point-to-point transmission paper channel model1,…,ρN)T, by realistic simulation in darkroom
Environment is denoted as vector to the spatial correlation factors of upper point-to-point transmission at various locationsWherein matrix
Q=(q (β1,α1,d1),…,q(βN,αN,dN)), then the optimization problem of radiant power of popping one's head in vector can be written as:
Wherein Λ=diag (cos θ1,…,cosθM) it is diagonal matrix, diagonal element is respectively cos θi, 1≤i≤M.
Notice that the dark indoor probe radiant power optimization problem form of form two dimension of optimization problem (6) is similar, only
Wherein the calculation formula of matrix Q and vector ρ are different, and have more a Linear Constraints
Similar optimization problem modeling, in contrast, optimization problem in the embodiment of the present invention have also been carried out in the prior art
Model considers probe radiant power vectorNormalize introduced constraint conditionAnd spherical coordinate system integral draws
The cos θ enterediConstraint condition brought by the factorIt models more tight.Objective function and constraint item in optimization problem
Part is the convex function of optimized variable w, can obtain rapid solving by efficient optimization tool such as CVX etc..
For Arbitrary 3 D channel model and any probe allocation plan, after comprehensively considering various system constraints
Probe radiant power right-value optimization problem has been modeled, compared with existing similar work, has modeled more tight, obtained optimization
Problem is convex problem, available rapid solving.
Probe radiation right-value optimization system when Fig. 3 is channel simulation in a kind of Multi probe darkroom provided in an embodiment of the present invention
The structural block diagram of system, as shown in figure 3, including the first module 301 and the second module 302.Wherein:
First module 301 is used for for each position in multiple positions in Multi probe fully anechoic chamber when channel simulation
It sets pair, obtains each position to the theoretical space correlation factor and real space correlation factor of upper point-to-point transmission.Second module 302
For solving default Optimized model, the optimal solution of each probe average radiating power is obtained, to complete to believing in Multi probe darkroom
Probe radiation right-value optimization when road is simulated；Wherein, the objective function of the default Optimized model is each position to upper two o'clock
Between theoretical space correlation factor and real space correlation factor difference it is minimum.
Specifically, the first module 301 is specifically used for solving the first spatial correlation factors expression formula, obtains described theoretical empty
Between correlation factor.
First module 301 be specifically used for solve second space correlation factor expression formula, obtain the real space correlation because
Son.
Second module 302 is specifically used for solving the default Optimized model using convex function solution tool, obtains
The optimal solution of each probe average radiating power.
Probe radiates right-value optimization system, base when channel simulation in a kind of Multi probe darkroom provided in an embodiment of the present invention
In the Multi probe darkroom system of prefade synthetic technology, the optimization method of probe radiation weight in two-dimentional darkroom system is extended
Into three dimension system, is improved for probe radiation right-value optimization problem and supplement relevant constraint, obtained optimization problem
For convex problem, can be solved by efficient convex optimized algorithm.
Fig. 4 is the structural schematic diagram of a kind of electronic equipment provided in an embodiment of the present invention, as shown in Fig. 4, electronic equipment packet
It includes: processor (processor) 401, communication interface (Communications Interface) 402, memory (memory)
403 and bus 404, wherein processor 401, communication interface 402, memory 403 are completed mutual logical by bus 404
Letter.Processor 401 can call the logical order in memory 403, to execute following method, for example, for visiting more
Each position pair in multiple positions in head fully anechoic chamber when channel simulation, obtains each position to the reason of upper point-to-point transmission
By spatial correlation factors and real space correlation factor；Default Optimized model is solved, each probe average radiating power is obtained
Optimal solution, to complete to probe radiates right-value optimization when channel simulation in Multi probe darkroom；Wherein, the default Optimized model
Objective function be each position to the difference of the theoretical space correlation factor of upper point-to-point transmission and real space correlation factor most
It is small.
Logical order in above-mentioned memory 402 can be realized and as independence by way of SFU software functional unit
Product when selling or using, can store in a computer readable storage medium.Based on this understanding, this hair
Substantially the part of the part that contributes to existing technology or the technical solution can be with soft in other words for bright technical solution
The form of part product embodies, which is stored in a storage medium, including some instructions to
So that a computer equipment (can be personal computer, server or the network equipment etc.) executes each implementation of the present invention
The all or part of the steps of example the method.And storage medium above-mentioned include: USB flash disk, mobile hard disk, read-only memory (ROM,
Read-Only Memory), random access memory (RAM, Random Access Memory), magnetic or disk etc. it is each
Kind can store the medium of program code.
The embodiment of the present invention provides a kind of non-transient computer readable storage medium, and the non-transient computer is readable to deposit
Storage media stores computer instruction, and the computer instruction executes the computer provided by above-mentioned each method embodiment
Method, for example, for each position pair in multiple positions in Multi probe fully anechoic chamber when channel simulation, obtain
Theoretical space correlation factor and real space correlation factor of each position to upper point-to-point transmission；Default Optimized model is solved, is obtained
The optimal solution of each probe average radiating power is taken, to complete to probe radiation weight is excellent when channel simulation in Multi probe darkroom
Change；Wherein, the objective function of the default Optimized model is theoretical space correlation factor and reality of each position to upper point-to-point transmission
The difference of border spatial correlation factors is minimum.
Those of ordinary skill in the art will appreciate that: realize that all or part of the steps of above method embodiment can lead to
The relevant hardware of program instruction is crossed to complete, program above-mentioned can be stored in a computer readable storage medium, the journey
Sequence when being executed, executes step including the steps of the foregoing method embodiments；And storage medium above-mentioned include: ROM, RAM, magnetic disk or
The various media that can store program code such as person's CD.
The embodiments such as communication equipment described above are only schematical, wherein single as illustrated by the separation member
Member may or may not be physically separated, and component shown as a unit may or may not be object
Manage unit, it can it is in one place, or may be distributed over multiple network units.It can be according to the actual needs
Some or all of the modules therein is selected to achieve the purpose of the solution of this embodiment.Those of ordinary skill in the art are not paying
Out in the case where creative labor, it can understand and implement.
Through the above description of the embodiments, those skilled in the art can be understood that each embodiment
It can realize by means of software and necessary general hardware platform, naturally it is also possible to pass through hardware.Based on such reason
Solution, substantially the part that contributes to existing technology can embody above-mentioned technical proposal in the form of software products in other words
Out, which may be stored in a computer readable storage medium, such as ROM/RAM, magnetic disk, CD,
It uses including some instructions so that a computer equipment (can be personal computer, server or the network equipment etc.) is held
The method of certain parts of each embodiment of row or embodiment.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；To the greatest extent
Present invention has been described in detail with reference to the aforementioned embodiments for pipe, those skilled in the art should understand that: it is still
It is possible to modify the technical solutions described in the foregoing embodiments, or part of technical characteristic is equally replaced
It changes；And these are modified or replaceed, technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
Spirit and scope.
Claims (8)
1. a kind of probe radiation right-value optimization method when channel simulation in Multi probe darkroom characterized by comprising
For each position pair in multiple positions in Multi probe fully anechoic chamber when channel simulation, each position is obtained to upper
The theoretical space correlation factor and real space correlation factor of point-to-point transmission；
Default Optimized model is solved, the optimal solution of each probe average radiating power is obtained, to complete to believing in Multi probe darkroom
Probe radiation right-value optimization when road is simulated；Wherein, the objective function of the default Optimized model is each position to upper point-to-point transmission
Theoretical space correlation factor and real space correlation factor difference it is minimum.
2. method according to claim 1, which is characterized in that the expression formula of the default Optimized model are as follows:
Wherein, Q=(q (β1,α1,d1),…,q(βN,αN,dN)), w=(w1,…,wM)T,Λ=diag (cos θ1,…,cosθM), d is any spatial position between upper two o'clock
Distance is that β is pitch angle of any spatial position to upper point-to-point transmission line vector, and α is the azimuth of any spatial position pair, q
(β1,α1,d1),…,q(βN,αN,dN) it is N number of space to corresponding vector, w1,…,wMEach probe in respectively M probe
Radiant power, ρ are any spatial position to the theoretical space correlation factor between upper two o'clock, and θ is the pitching of channel arrival bearing
Angle, and N >=1, M >=1, i≤M.
3. method according to claim 2, which is characterized in that described to obtain each position to the theoretical space phase of upper point-to-point transmission
The factor is closed, is specifically included:
The first spatial correlation factors expression formula is solved, the theoretical space correlation factor is obtained.
4. method according to claim 2, which is characterized in that described to obtain each position to the real space phase of upper point-to-point transmission
The factor is closed, is specifically included:
Second space correlation factor expression formula is solved, the real space correlation factor is obtained.
5. method according to claim 2, which is characterized in that it is described to solve default Optimized model, it is average to obtain each probe
The optimal solution of radiant power, specifically includes:
Tool is solved using convex function to solve the default Optimized model, obtains each probe average radiating power most
Excellent solution.
6. probe radiation right-value optimization system when channel simulation in a kind of Multi probe darkroom characterized by comprising
First module, for obtaining for each position pair in multiple positions in Multi probe fully anechoic chamber when channel simulation
Take each position to the theoretical space correlation factor and real space correlation factor of upper point-to-point transmission；
Second module obtains the optimal solution of each probe average radiating power, for solving default Optimized model to complete to more
Probe radiation right-value optimization when channel simulation in probe darkroom；Wherein, the objective function of the default Optimized model is each position
It sets minimum to the theoretical space correlation factor of upper point-to-point transmission and the difference of real space correlation factor.
7. a kind of electronic equipment, which is characterized in that including processor, communication interface, memory and bus, wherein processor leads to
Believe that interface, memory complete mutual communication by bus, processor can call the logical order in memory, to execute
As probe radiates right-value optimization method when channel simulation in Multi probe darkroom described in any one of claim 1 to 5.
8. a kind of non-transient computer readable storage medium, which is characterized in that the non-transient computer readable storage medium is deposited
Computer instruction is stored up, the computer instruction executes the computer as Multi probe described in any one of claim 1 to 5 is dark
Probe radiation right-value optimization method when channel simulation in room.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884734A (en) * | 2020-07-15 | 2020-11-03 | 中国信息通信研究院 | Performance test method and system for millimeter wave terminal |
| CN112235823A (en) * | 2020-10-14 | 2021-01-15 | 东南大学 | Three-dimensional air interface test probe selection method based on cultural genetic algorithm |
| CN116388907A (en) * | 2023-06-02 | 2023-07-04 | 中国信息通信研究院 | High-precision electromagnetic environment reconstruction method and system |
-
2018
- 2018-12-18 CN CN201811549288.2A patent/CN109787698A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111884734A (en) * | 2020-07-15 | 2020-11-03 | 中国信息通信研究院 | Performance test method and system for millimeter wave terminal |
| CN111884734B (en) * | 2020-07-15 | 2022-05-24 | 中国信息通信研究院 | Performance test method and system for millimeter wave terminal |
| CN112235823A (en) * | 2020-10-14 | 2021-01-15 | 东南大学 | Three-dimensional air interface test probe selection method based on cultural genetic algorithm |
| CN116388907A (en) * | 2023-06-02 | 2023-07-04 | 中国信息通信研究院 | High-precision electromagnetic environment reconstruction method and system |
| CN116388907B (en) * | 2023-06-02 | 2023-08-11 | 中国信息通信研究院 | High-precision electromagnetic environment reconstruction method and system |
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Application publication date: 20190521 |