CN102801482B - Device, method and system for dynamic range adjustment for channel simulation system - Google Patents
Device, method and system for dynamic range adjustment for channel simulation system Download PDFInfo
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- CN102801482B CN102801482B CN201110139111.7A CN201110139111A CN102801482B CN 102801482 B CN102801482 B CN 102801482B CN 201110139111 A CN201110139111 A CN 201110139111A CN 102801482 B CN102801482 B CN 102801482B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
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- H04W24/06—Testing, supervising or monitoring using simulated traffic
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Abstract
The invention discloses a device, a method and a system for a dynamic range adjustment for a channel simulation system. The device comprises a script management module, a power adjustment module, and a base-band signal power adjustment module, wherein the script management module is used for performing calibration pre-processing on the channel data file acquired in an external field, so as to obtain a channel script after the calibration pre-processing and a calibration factor R0 script; the power adjustment module is used for obtaining a base-band signal adjustment factor R1 and an adjustment factor R2 for later-stage equipment performing signal processing by combining the base-band dynamic range supported by the later-stage equipment with a dynamic range for the later-stage equipment further performing the signal processing based on a calibration factor R0 and the power value P of the base-band signal output by the channel simulation system after performing channel processing according to the channel script after the calibration pre-processing, and outputting the R2 to the later-stage equipment; and the base-band signal power adjustment module is used for performing a power adjustment on the base-band signal output by the channel simulation system by virtue of the R1, and outputting the adjusted base-band signal to the later-stage equipment. According to the invention, the dynamic range adjustment for the channel simulation system is realized.
Description
Technical field
The present invention relates to wireless communication technique field, particularly relate to a kind of dynamic range adjusting device, method and system of channel simulation system.
Background technology
In wireless channel, electric wave propagation is not single-pathway, but the synthesis of numerous reflected waves in many paths.Because electric wave is different by the distance in each path, the reflected wave that thus each path is next is different for the time of advent, and namely the time delay of each signal is different.When transmitting terminal sends an extremely narrow pulse signal, the signal that travelling carriage receives is made up of the pulse of many different delay, and we are called delay spread.
Simultaneously due to the reflected wave difference time of advent that each path is come, phase place is also just different.Multiple signals of out of phase at receiving terminal superposition, superposition and strengthen (direction is identical) sometimes, sometimes superposition and weakening (direction is contrary).Like this, the amplitude of Received signal strength will sharply change, and namely create rapid fading.This decline is caused by multiple path, so be called multipath fading.
In addition, Received signal strength is except there is rapid fading in instantaneous value, and median of field strength (mean value) also there will be slow change.Mainly changed by the change of zone locations and meteorological condition and cause, so that the refraction of electric wave is propagated and changed in time and change, the time delay that multipath transmisstion arrives the signal of fixed reception point changes thereupon.This signal intensity caused by shadow effect and meteorological reason, is called slow fading.
Due to the mobility of travelling carriage in mobile communication, as previously mentioned, also Doppler effect is had in wireless channel.In mobile communications, when base station shifted to by travelling carriage, frequency gets higher, during away from base station, frequencies go lower.Doppler effect increases the complexity of mobile communication further.
The radio channel characteristic more than referred to, comprises multipath transmisstion, delay spread, fading characteristic and Doppler effect etc., is only the wireless channel of point-to-point.In cellular mobile telecommunications, the signal that terminal sends is except serviced base station receives, also received by multiple neighbor base stations adjacent with serving BS, form up channel interference (wireless channel of terminal to base station is commonly referred to up channel, and base station is commonly referred to down channel to the wireless channel of terminal) of neighbor base station; Equally, base station transmit signals, except being received by the terminal in its coverage, is also received by the terminal of adjacent area simultaneously, therefore constitutes the down channel interference of adjacent area terminal.Patent specification is by this point-to-multipoint in cellular radio communication system, and the wireless channel environment of multipoint-to-point is called radio network information channel.Radio network information channel is except changing with communication geographical environment, translational speed and except change, also have close relationship with cellular network topologies structure.
The complexity of radio network information channel, diversity and time variation bring great difficulty to wireless base system design and system parameters configuration.Usual wireless base system, before batch application, is difficult to its systematic function in a network environment of precognition; Even if base station system have passed laboratory system test.The system testing environment built in laboratory only supports function and the performance verification of point-to-point usually, namely only possesses wireless channel simulation ability, does not possess radio network information channel analog capability.Exactly because also laboratory system tests the various radio channel characteristic cannot portrayed in real network environment, usually before the application of base station system batch, need to build the commercial pilot office of certain scale, fully to expose Problems existing in base station system.The commercial pilot office of scale needs to drop into a huge sum of money, and needs the construction quite grown and service time.
Wireless emulation technology all plays the part of important role in wireless technology research and wireless system research and development.The complexity of wireless system research and development and wireless technology research is far above wired system, and this mainly makes wireless system complexity greatly increase because wireless environment changes along with conditions such as time, place, geographical environment, weather environment, mobility, interference.Wireless product must consider to solve the impact that these factors are brought, and such as wants solving multipath, decline, channel relevancy, noise, interference etc.
The demand for development of wireless technology is while fast lifting transmittability, and the availability of frequency spectrum also will constantly increase, and limited frequency spectrum realizes the two-forty, Large Copacity and the high-quality that communicate.Current MIMO technology, COMP technology, RELAY technology, carrier aggregation, large bandwidth etc. all become new industrial research focus.
Wireless communication technology development is swift and violent, and new technology constantly occurs, channel simulator technology also needs the needs adapting to new industrial research and research and development.
Current wireless channel simulation technology mainly contains soft simulation technology and channel simulator technology.
Soft simulation technology: carry out wireless modeling by instruments such as MATLAB, Output simulation result, generally runs in PC; Soft simulation technology is generally used for off-line, nonreal time simulation.
Channel simulator: carry out wireless modeling by embedded system, the channel data real-time effect of modeling generation in the base band data of reality.The hardware system that channel simulator needs design research and development new, can realize point-to-point, real-time channel simulator.
At present, the dynamics of channels scope of channel simulation system is at more than 80DB, and the digital power dynamic range of the base band data of real base station or terminal is generally at about 30DB, if the base band data after channel simulation system process is directly carried out great dynamic range process on numeric field, under then causing fixing bit wide situation, the problem of the loss of signal, therefore wireless channel simulation system must solve dynamic range problem.
Summary of the invention
The technical problem that the present invention solves is, a kind of dynamic range adjusting device, method and system of channel simulation system are provided, directly on numeric field, carry out great dynamic range process in order to the base band data solved in prior art after channel simulation system process, cause the problem of the loss of signal in fixing bit wide situation.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is as follows:
On the one hand, the invention provides a kind of dynamic range adjusting device of channel simulation system, comprising:
Script administration module, carries out calibration preliminary treatment for the channel data file gathered outfield, obtains calibrating pretreated channel script and scaling factor R0 script;
Power regulation module, for obtaining the performance number P of the baseband signal exported after described scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration, the dynamic range J2 of signal transacting is further in conjunction with the base band dynamic range J1 of rear class equipment support and rear class equipment, obtain baseband signal power control needed for baseband signal Dynamic gene R1 and rear class equipment be the Dynamic gene R2 of signal transacting, and export described Dynamic gene R2 to described rear class equipment;
Baseband signal power adjusting module, the baseband signal exported after carrying out Channel Processing to described channel simulation system according to the pretreated channel script of described calibration for utilizing described Dynamic gene R1 carries out power adjustment, and exports the baseband signal after adjustment to described rear class equipment.
In device of the present invention, described power regulation module specifically comprises:
Parameter acquiring submodule, for obtaining the performance number P of the baseband signal exported after described scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration;
Dynamic gene produces submodule, for by described performance number P and described J1 comparison, by described scaling factor R0 and described J2 comparison, when described performance number P in described J1 and described scaling factor R0 in described J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, described performance number P is exceeded part compensation distribution in described J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, is compensated the described Dynamic gene R1 after distribution and described Dynamic gene R2;
Factor output sub-module, for exporting described Dynamic gene R1 to described baseband signal power adjusting module, exports described Dynamic gene R2 to described rear class equipment.
Wherein, described Dynamic gene generation module, exceeds part that the part of J1 and/or scaling factor R0 exceed J2 in described J1 and J2 during compensation distribution, the Dynamic gene R1=-(P-J1 after described compensation distribution by described performance number P
max), R2=MAX (R0+P-J1
max, J2
max); Or, Dynamic gene R1=-(P-J1
max), R2=R0+P-J1
max, wherein, described J1
maxand J2
maxrepresent the maximum of dynamic range J1 and J2.
Further, device of the present invention also comprises:
Base band and control word merge module, for the baseband signal after the process of described baseband signal power adjusting module and described Dynamic gene R2 being merged, and export the baseband signal after merging to described rear class equipment.
Further, device of the present invention also comprises: calibration control module and/or digital power measurement module;
Described calibration control module, is issued to power regulation module for timing by described scaling factor R0 script;
Described digital power measurement module, for measuring the performance number P of the baseband signal exported after described channel simulation system carries out Channel Processing according to the pretreated channel script of described calibration, and is issued to described power regulation module by described performance number P.
On the other hand, the present invention also provides a kind of dynamic range method of adjustment of channel simulation system, comprising:
Calibration preliminary treatment is carried out to the channel data file that outfield gathers, obtains calibrating pretreated channel script and scaling factor R0 script;
The performance number P of the baseband signal exported after carrying out Channel Processing based on described scaling factor R0 script and channel simulation system according to the pretreated channel script of described calibration, in conjunction with the dynamic range J2 base band dynamic range J1 of rear class equipment support and rear class equipment being done further signal transacting, obtain baseband signal power control needed for baseband signal Dynamic gene R1 and rear class equipment be the Dynamic gene R2 of signal transacting, and export described Dynamic gene R2 to rear class equipment;
The baseband signal exported after utilizing described Dynamic gene R1 to carry out Channel Processing to described channel simulation system according to the pretreated channel script of described calibration carries out power adjustment, and exports the baseband signal after adjustment to rear class equipment.
Wherein, obtain described in baseband signal power control needed for baseband signal Dynamic gene R1 and the rear class equipment Dynamic gene R2 that does signal transacting specifically comprise:
By described performance number P and described J1 comparison, by described scaling factor R0 and described J2 comparison, when described performance number P in described J1 and described scaling factor R0 in described J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, described performance number P is exceeded part compensation distribution in described J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, is compensated the described Dynamic gene R1 after distribution and described Dynamic gene R2.
Wherein, described performance number P is exceeded J1 part and/or scaling factor R0 exceed J2 part in described J1 and J2 during compensation distribution, the Dynamic gene R1=-(P-J1 after described compensation distribution
max), R2=MAX (R0+P-J1
max, J2
max); Or, Dynamic gene R1=-(P-J1
max), R2=R0+P-J1
max, wherein, described J1
maxand J2
maxrepresent the maximum of dynamic range J1 and J2.
Further, the method for the invention also comprises before exporting the baseband signal after Dynamic gene R2 and adjustment to described rear class equipment: the baseband signal after described Dynamic gene R2 and described adjustment is carried out merging treatment.
Again on the one hand, the present invention also provides a kind of dynamic range adjustment System of channel simulation system, comprising: channel simulation system, dynamic range adjusting device and rear class equipment;
Described channel simulation system, for obtaining baseband signal, exports described dynamic range adjusting device after carrying out Channel Processing according to the calibration pretreated channel script of described dynamic range adjusting device generation to described baseband signal;
Described dynamic range adjusting device, carries out calibration preliminary treatment for the channel data file gathered outfield, obtains calibrating pretreated channel script and scaling factor R0 script; Based on the performance number P of the baseband signal that described scaling factor R0 and channel simulation system export, the dynamic range J2 of signal transacting is further in conjunction with the base band dynamic range J1 of rear class equipment support and rear class equipment, obtain baseband signal power control needed for baseband signal Dynamic gene R1 and rear class equipment be the Dynamic gene R2 of signal transacting, and export described Dynamic gene R2 to rear class equipment; Further, utilize described Dynamic gene R1 to carry out power adjustment to the baseband signal that channel simulation system exports, export the baseband signal after adjustment to rear class equipment;
Described rear class equipment, for receiving the baseband signal after the adjustment of described dynamic range adjusting device and described Dynamic gene R2, and processes the baseband signal received based on described Dynamic gene R2.
Beneficial effect of the present invention is as follows:
Device provided by the invention, method and system, can compensate the preliminary treatment to channel script, ensures that channel simulation system reduces the loss of signal and ensures that channel effect is consistent with actual outfield channel simultaneously; And dynamically can make full use of the dynamic range index of digital signal, the dynamic range of Dynamic gene part is oppositely adjusted to numerical portion, also digital dynamic can be exceeded partial adjustment on Dynamic gene, and then the great dynamic range baseband signal through channel simulation system process is controlled in the dynamic range limited, the problem solving the loss of signal in fixing bit wide situation and the effect realized compared with great dynamic range;
In addition, device provided by the invention, method and system, support the adjustment of two-stage dynamic range, be more conducive to the decomposition realizing dynamic range index, support larger dynamic range;
Moreover device provided by the invention, method and system, by the calibration preliminary treatment to channel fading, can reduce the loss that Channel Processing causes signal greatly.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the dynamic range adjusting device structure chart of a kind of channel simulation system provided by the invention;
The dynamic range adjusting device of the channel simulation system that Fig. 2 provides for the embodiment of the present invention realizes the flow chart of dynamic range adjustment;
Fig. 3 is the flow chart of the dynamic range method of adjustment of a kind of channel simulation system provided by the invention;
Fig. 4 is the structure chart of the dynamic range adjustment System of a kind of channel simulation system provided by the invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
In order to solve problems of the prior art, the invention provides a kind of dynamic range adjusting device, method and system of channel simulation system, directly on numeric field, carry out great dynamic range process in order to the base band data solved in prior art after channel simulation system process, cause the problem of the loss of signal in fixing bit wide situation.
As shown in Figure 1, the dynamic range adjusting device of channel simulation system provided by the invention, comprising:
Script administration module 110, carries out calibration preliminary treatment for the channel data file gathered outfield, obtains calibrating pretreated channel script and scaling factor R0 script;
Power regulation module 120, for obtaining the performance number P of the baseband signal exported after scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration, the dynamic range J2 of signal transacting is further in conjunction with the base band dynamic range J1 of rear class equipment support and rear class equipment, obtain baseband signal power control needed for baseband signal Dynamic gene R1 and rear class equipment be the Dynamic gene R2 of signal transacting, and export Dynamic gene R2 to rear class equipment;
Wherein, the dynamic range J2 that the base band dynamic range J1 of rear class equipment support and rear class equipment do signal transacting further is preferably stored in the threshold registers in power regulation module.
Baseband signal power adjusting module 130, the baseband signal exported after carrying out Channel Processing to channel simulation system according to the pretreated channel script of described calibration for utilizing described Dynamic gene R1 carries out power adjustment, and exports the baseband signal after adjustment to described rear class equipment.
Concrete, in device of the present invention, described power regulation module 120 specifically comprises:
Parameter acquiring submodule 121, for obtaining the performance number P of the baseband signal exported after scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration;
Dynamic gene produces submodule 122, for by performance number P and J1 comparison, by scaling factor R0 and J2 comparison, when performance number P in J1 and scaling factor R0 in J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, performance number P is exceeded part compensation distribution in described J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, is compensated the Dynamic gene R1 after distribution and Dynamic gene R2;
Preferably, Dynamic gene produces submodule 122 according to the basic principle compensated mutually, can determine the Dynamic gene R1 after compensation distribution and Dynamic gene R2 in the following way:
R1=-(P-J1
max); R2=MAX (R0+P-J1
max, J2
max); Or, make R1=-(P-J1
max); R2=R0+P-J1
max.
Factor output sub-module 123, for exporting Dynamic gene R1 to baseband signal power adjusting module 130, exports Dynamic gene R2 to rear class equipment.
Further, take excess resource in order to reduce testing apparatus to rear class equipment transmission data, preferably, device of the present invention also comprises:
Base band and control word merge module 140, merge, and export the baseband signal after merging to rear class equipment for the baseband signal after being processed by baseband signal power adjusting module 130 and Dynamic gene R2.
Further, in the present invention, scaling factor R0 script, after generation scaling factor R0 script, preferably, is issued to power regulation module 120 by the timing of calibration control module 150 by script administration module 110; Wherein, calibration control module 150 can be triggered by timer, timed sending scaling factor R0 script;
Further, in the present invention, power regulation module 120 measures the performance number P of the baseband signal that channel simulation system exports preferably by digital power measurement module 160, and this performance number P is issued to power regulation module 120; Or by performance number P by being issued to power regulation module 120 after digital power register buffer memory.
In sum, device provided by the invention, preliminary treatment is carried out to the channel data file based on actual channel collection, channel data is targeted in the fading channel value of equal value of setting, obtain calibrate after channel script and scaling factor R0 (namely, to the DB number that the unification of original channel fading value is raised, i.e. amplification factor) script; Channel script after calibration is sent to channel simulation system, channel simulation system utilizes the pretreated channel script of calibration to carry out Channel Processing to base band data, recycling scaling factor R0 carries out reverse process to the data after Channel Processing, ensures that channel simulation system reduces the loss of signal and ensures that channel effect is consistent with actual outfield channel simultaneously.In addition, the present invention supports that two-stage dynamic range adjusts, and is more conducive to the decomposition realizing dynamic range index, supports larger dynamic range.
Connect UE equipment for radio network information channel analogue system by radio frequency unit below, the enforcement of device technique scheme of the present invention is described in further detail.
In the present embodiment, suppose that the standard interface signal of UE is radiofrequency signal, therefore analogue system needs to be connected by radio frequency unit RRU with UE;
The baseband signal dynamic range of Base Band Unit BBU is set as 20DB;
Dynamic range after channel simulation system carries out Channel Processing is 80DB; Original channel dynamic range is-80 ~-160DB;
The base band dynamic range that rear class equipment radio frequency unit R RU numerical portion can process is assumed to 30DB;
The dynamic range that rear class equipment radio frequency unit R RU simulation part can process is 50DB;
The dynamic range that then dynamic range treatment facility threshold registers 1 (J1) records is 0 ~-30DBFS; The dynamic range that threshold registers 2 (J2) records is 0 ~-50DBFS.
Suppose that the decline value of the channel sampling point that outfield gathers is for-140DB;
Suppose that the power of current baseband signal is-20DBFS.
As shown in Figure 2, the process that the dynamic range adjusting device of channel simulation system that the embodiment of the present invention provides carries out dynamic range process is specially:
Step S201, script administration module carry out calibration preliminary treatment to the channel data file that outfield gathers, channel fading is scaled to-5DB, obtain calibrating pretreated channel script and scaling factor R0=-55DB, and pretreated for calibration channel script is sent to channel simulation system.
Wherein, the mode that scaling factor is determined is:
Because channel simulation system original channel dynamic range is-80 ~-160DB, this dynamic range carries out being equivalent to 0 ~-80DB dynamic range, is equivalent to-the 60DB in 0 ~-80DB dynamic range when channel fading value is-140DB; When channel fading is scaled to-5DB, now scaling factor answers value to be-55DB.
Step S202, calibration control module are downloaded scaling factor R0 according to timer timing, and are written to power control module.
The digital power value P of the baseband signal that step S203, digital power measurement module Timing measurement channel simulation system export after carrying out Channel Processing according to the pretreated channel script of calibration, and the digital power value P obtained is written to digital power register.
Step S204, power regulation module, according to the digital power P of scaling factor R0 and actual measurement, obtain the Dynamic gene R2 Dynamic gene R1 of baseband signal and rear class equipment being done to signal transacting.
In the embodiment of the present invention, determine that the concrete mode of Dynamic gene R1 and R2 is as follows:
(1) if performance number P is in the scope of threshold registers 1, and scaling factor R0 is in threshold registers 2 scope, then make R1=0DB; R2=R0;
(2) other situations, then make R1=-(P-J1
max); R2=MAX (R0+P-J1
max, J2
max); Wherein, J1
maxfor storing the maximum of dynamic range in threshold registers 1; J2
maxfor storing the maximum of dynamic range in threshold registers 2.
For the embodiment of the present invention, then have: due to R0=-55DB, performance number P=-20DBFS, then known P is in the scope of threshold registers 1, and R0, not in threshold registers 2 scope, belongs to the situation described in above-mentioned (2), utilizes R1=-(P-J1
max); R2=MAX (R0+P-J1
max, J2
max) can R1=-10DB be obtained; R2=-45DB.
Step S205, baseband signal power adjusting module to zoom in or out process according to the baseband signal that adjustment R1 factor pair channel simulation system exports.
Step S206, base band and control word merge module and Dynamic gene R2 are merged in the baseband signal after convergent-divergent process, and the baseband signal after merging are passed on rear class equipment.
Wherein, described rear class equipment receives described baseband signal and described Dynamic gene R2, and processes the baseband signal received based on described Dynamic gene R2.
As shown in Figure 3, the present invention also provides a kind of dynamic range method of adjustment of channel simulation system, comprising:
Step S301, to outfield gather channel data file carry out calibration preliminary treatment, obtain calibrating pretreated channel script and scaling factor R0 script;
Step S302, carry out Channel Processing based on scaling factor R0 and channel simulation system according to the pretreated channel script of described calibration after the performance number P of baseband signal that exports, the dynamic range J2 of signal transacting is further in conjunction with the base band dynamic range J1 of rear class equipment support and rear class equipment, obtain baseband signal power control needed for baseband signal Dynamic gene R1 and rear class equipment be the Dynamic gene R2 of signal transacting, and export Dynamic gene R2 to rear class equipment;
This step is specially: by performance number P and J1 comparison, by scaling factor R0 and J2 comparison, when performance number P in J1 and scaling factor R0 in J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, performance number P is exceeded part compensation distribution in J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, is compensated the Dynamic gene R1 after distribution and Dynamic gene R2.
Preferably, the Dynamic gene R1 after compensation distribution and Dynamic gene R2 is: Dynamic gene R1=-(P-J1
max), R2=MAX (R0+P-J1
max, J2
max); Or, Dynamic gene R1=-(P-J1
max), R2=R0+P-J1
max.
Step S303, utilize Dynamic gene R1 to carry out Channel Processing to channel simulation system according to the pretreated channel script of described calibration after the baseband signal that exports carry out power adjustment, and export the baseband signal after adjustment to rear class equipment.
Preferably, in the method for the invention, also comprise before exporting the baseband signal after Dynamic gene R2 and adjustment to described rear class equipment: the baseband signal after Dynamic gene R2 and adjustment is carried out merging treatment.
As shown in Figure 4, the present invention also provides a kind of dynamic range adjustment System of channel simulation system, comprising: channel simulation system, dynamic range adjusting device and rear class equipment; Wherein,
Channel simulation system, for obtaining baseband signal, exports described dynamic range adjusting device after carrying out Channel Processing according to the calibration pretreated channel script of described dynamic range adjusting device generation to described baseband signal;
Dynamic range adjusting device, carries out calibration preliminary treatment for the channel data file gathered outfield, obtains calibrating pretreated channel script and scaling factor R0 script; Based on the performance number P of the baseband signal that scaling factor R0 and channel simulation system export, the dynamic range J2 of signal transacting is further in conjunction with the base band dynamic range J1 of rear class equipment support and rear class equipment, obtain baseband signal power control needed for baseband signal Dynamic gene R1 and rear class equipment be the Dynamic gene R2 of signal transacting, and export Dynamic gene R2 to rear class equipment; Further, utilize Dynamic gene R1 to carry out power adjustment to the baseband signal that channel simulation system exports, export the baseband signal after adjustment to rear class equipment;
Described rear class equipment, for receiving the baseband signal after the adjustment of dynamic range adjusting device and Dynamic gene R2, and processes the baseband signal received based on Dynamic gene R2.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention also comprises these change and modification.
Claims (9)
1. a dynamic range adjusting device for channel simulation system, is characterized in that, comprising:
Script administration module, carries out calibration preliminary treatment for the channel data file gathered outfield, obtains calibrating pretreated channel script and scaling factor R0 script;
Power regulation module, for obtaining the performance number P of the baseband signal exported after described scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration; By the base band dynamic range J1 comparison of described performance number P and the support of rear class equipment, the dynamic range J2 comparison described scaling factor R0 and rear class equipment being done further signal transacting, when described performance number P in described J1 and described scaling factor R0 in described J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, described performance number P is exceeded part compensation distribution in described J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, be compensated the described Dynamic gene R1 after distribution and described Dynamic gene R2, and export described Dynamic gene R1 to described baseband signal power adjusting module, export described Dynamic gene R2 to described rear class equipment;
Baseband signal power adjusting module, the baseband signal exported after carrying out Channel Processing to described channel simulation system according to the pretreated channel script of described calibration for utilizing described Dynamic gene R1 carries out power adjustment, and exports the baseband signal after adjustment to described rear class equipment.
2. device as claimed in claim 1, it is characterized in that, described power regulation module specifically comprises:
Parameter acquiring submodule, for obtaining the performance number P of the baseband signal exported after described scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration;
Dynamic gene produces submodule, for by described performance number P and described J1 comparison, by described scaling factor R0 and described J2 comparison, when described performance number P in described J1 and described scaling factor R0 in described J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, described performance number P is exceeded part compensation distribution in described J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, is compensated the described Dynamic gene R1 after distribution and described Dynamic gene R2;
Factor output sub-module, for exporting described Dynamic gene R1 to described baseband signal power adjusting module, exports described Dynamic gene R2 to described rear class equipment.
3. device as claimed in claim 2, it is characterized in that, described Dynamic gene generation module, exceeds part that the part of J1 and/or scaling factor R0 exceed J2 in described J1 and J2 during compensation distribution, the Dynamic gene R1=-(P-J1 after described compensation distribution by described performance number P
max), R2=MAX (R0+P-J1
max, J2
max); Or, Dynamic gene R1=-(P-J1
max), R2=R0+P-J1
max, wherein, described J1
maxand J2
maxrepresent the maximum of dynamic range J1 and J2.
4. the device as described in claim 1 or 2 or 3, it is characterized in that, described device also comprises:
Base band and control word merge module, for the baseband signal after the process of described baseband signal power adjusting module and described Dynamic gene R2 being merged, and export the baseband signal after merging to described rear class equipment.
5. device as claimed in claim 1, it is characterized in that, described device also comprises: calibration control module and/or digital power measurement module;
Described calibration control module, is issued to power regulation module for timing by described scaling factor R0 script;
Described digital power measurement module, for measuring the performance number P of the baseband signal exported after described channel simulation system carries out Channel Processing according to the pretreated channel script of described calibration, and is issued to described power regulation module by described performance number P.
6. a dynamic range method of adjustment for channel simulation system, is characterized in that, comprising:
Calibration preliminary treatment is carried out to the channel data file that outfield gathers, obtains calibrating pretreated channel script and scaling factor R0 script;
Obtain the performance number P of the baseband signal exported after described scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration; By the base band dynamic range J1 comparison of described performance number P and the support of rear class equipment, the dynamic range J2 comparison described scaling factor R0 and rear class equipment being done further signal transacting, when described performance number P in described J1 and described scaling factor R0 in described J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, described performance number P is exceeded part compensation distribution in described J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, be compensated the described Dynamic gene R1 after distribution and described Dynamic gene R2, and export described Dynamic gene R1 to described baseband signal power adjusting module, export described Dynamic gene R2 to described rear class equipment;
The baseband signal exported after utilizing described Dynamic gene R1 to carry out Channel Processing to described channel simulation system according to the pretreated channel script of described calibration carries out power adjustment, and exports the baseband signal after adjustment to rear class equipment.
7. method as claimed in claim 6, is characterized in that, described performance number P is exceeded J1 part and/or scaling factor R0 exceed J2 part in described J1 and J2 during compensation distribution, the Dynamic gene R1=-(P-J1 after described compensation distribution
max), R2=MAX (R0+P-J1
max, J2
max); Or, Dynamic gene R1=-(P-J1
max), R2=R0+P-J1
max, wherein, described J1
maxand J2
maxrepresent the maximum of dynamic range J1 and J2.
8. method as claimed in claims 6 or 7, is characterized in that, described method also comprises before exporting the baseband signal after Dynamic gene R2 and adjustment to described rear class equipment: the baseband signal after described Dynamic gene R2 and described adjustment is carried out merging treatment.
9. a dynamic range adjustment System for channel simulation system, is characterized in that, comprising: channel simulation system, dynamic range adjusting device and rear class equipment;
Described channel simulation system, for obtaining baseband signal, exports described dynamic range adjusting device after carrying out Channel Processing according to the calibration pretreated channel script of described dynamic range adjusting device generation to described baseband signal;
Described dynamic range adjusting device, carries out calibration preliminary treatment for the channel data file gathered outfield, obtains calibrating pretreated channel script and scaling factor R0 script; Obtain the performance number P of the baseband signal exported after described scaling factor R0 script and channel simulation system carry out Channel Processing according to the pretreated channel script of described calibration; By the base band dynamic range J1 comparison of described performance number P and the support of rear class equipment, the dynamic range J2 comparison described scaling factor R0 and rear class equipment being done further signal transacting, when described performance number P in described J1 and described scaling factor R0 in described J2 time, Dynamic gene R1 is set to 0, and Dynamic gene R2 is set to R0; Otherwise, described performance number P is exceeded part compensation distribution in described J1 and J2 that the part of J1 and/or scaling factor R0 exceed J2, be compensated the described Dynamic gene R1 after distribution and described Dynamic gene R2, and export described Dynamic gene R1 to described baseband signal power adjusting module, export described Dynamic gene R2 to described rear class equipment; Further, utilize described Dynamic gene R1 to carry out power adjustment to the baseband signal that channel simulation system exports, export the baseband signal after adjustment to rear class equipment;
Described rear class equipment, for receiving the baseband signal after the adjustment of described dynamic range adjusting device and described Dynamic gene R2, and processes the baseband signal received based on described Dynamic gene R2.
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| CN201110139111.7A CN102801482B (en) | 2011-05-26 | 2011-05-26 | Device, method and system for dynamic range adjustment for channel simulation system |
| PCT/CN2011/077920 WO2012159363A1 (en) | 2011-05-26 | 2011-08-02 | Device, method and system for online test |
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| CN106470077B (en) * | 2015-08-21 | 2019-04-16 | 上海无线通信研究中心 | A kind of parallel channel test method and system |
| CN106059685B (en) * | 2016-05-17 | 2019-02-26 | 南京航空航天大学 | The extensive mimo channel simulator of time evolution and its analogy method |
| CN108039931B (en) * | 2017-12-11 | 2020-10-23 | 上海埃威航空电子有限公司 | Simulation test system of medium-high frequency communication channel based on geographic information |
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| CN1702986A (en) * | 2005-07-15 | 2005-11-30 | 清华大学 | Baseband multi-path fading channel simulator |
| CN1780184A (en) * | 2004-11-26 | 2006-05-31 | 华为技术有限公司 | Channel analog instrument and method |
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| CN100461655C (en) * | 2007-04-28 | 2009-02-11 | 北京交通大学 | System and method for testing channel transmission performance with the practical channel and computer simulation |
| CN101179456A (en) * | 2007-12-11 | 2008-05-14 | 福建星网锐捷网络有限公司 | Network appliance testing approach and device |
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| CN1780184A (en) * | 2004-11-26 | 2006-05-31 | 华为技术有限公司 | Channel analog instrument and method |
| CN1702986A (en) * | 2005-07-15 | 2005-11-30 | 清华大学 | Baseband multi-path fading channel simulator |
| CN101577958A (en) * | 2009-06-02 | 2009-11-11 | 北京天碁科技有限公司 | System and method for testing performance of closed loop power control algorithm |
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