WO2012162931A1

WO2012162931A1 - Apparatus, method and system for adjusting dynamic range of channel simulation system

Info

Publication number: WO2012162931A1
Application number: PCT/CN2011/077320
Authority: WO
Inventors: 陈诗军
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-05-27
Filing date: 2011-07-19
Publication date: 2012-12-06
Also published as: CN102801483B; CN102801483A

Abstract

Disclosed are an apparatus, method, and system for adjusting dynamic range of a channel simulation system. The apparatus comprises: a script management module, for calibrating a channel data file collected in outfield to obtain a calibration preprocessed channel script and a calibration factor R0 script; a power adjusting module, for obtaining a baseband signal adjustment factor R1 and an adjustment factor R2 for a post-device to process signals, and outputting the R2 to the post-device, based on the calibration factor R0 and the power value P of the baseband signal output by the channel simulation system according to the calibration preprocessed channel script, and in connection with a baseband dynamic range supported by the post-device and a dynamic range the post-device further processes the signals therein; and a baseband signal power adjusting module, for adjusting the power of the baseband signal output by the channel simulation system by using the R1, and outputting the adjusted baseband signal to the pos-device. The present invention realizes the adjustment to the dynamic range of the channel simulation system.

Description

Dynamic range adjusting device, method and system for channel simulation system

The present invention relates to the field of wireless communication technologies, and in particular, to a dynamic range adjustment apparatus, method and system for a channel simulation system. Background technique

The propagation of radio waves in a wireless channel is not a single path, but a synthesis of many reflected waves from many paths. Since the distances of the electric waves passing through the respective paths are different, the arrival times of the reflected waves of the respective paths are different, that is, the delays of the signals are different. When the transmitting end sends a very narrow pulse signal, the signal received by the mobile station consists of many pulses of different delays, which we call delay spread.

At the same time, the phase is different due to the different arrival times of the reflected waves from the respective paths. Multiple signals of different phases are superimposed at the receiving end, sometimes superimposed and strengthened (in the same direction), sometimes superimposed and weakened (in the opposite direction). Thus, the amplitude of the received signal will change drastically, ie, a fast fading occurs. This fading is caused by a variety of paths, so it is called multipath fading.

In addition, the received signal has a slow change in the median value (average value) in addition to the fast fading of the instantaneous value. It is mainly caused by the change of the location of the area and the change of meteorological conditions, so that the refraction propagation of the electric wave changes with time, and the delay of the multipath propagation signal reaching the fixed receiving point changes accordingly. This change in signal caused by shadowing and meteorological causes is called slow fading.

Due to the mobility of mobile stations in mobile communications, as mentioned earlier, there will also be a Doppler effect in the wireless channel. In mobile communication, when the mobile station moves to the base station, the frequency becomes higher, and when it is far away from the base station, the frequency becomes lower. Therefore, the Doppler effect further increases the complexity of mobile communications.

The wireless channel characteristics mentioned above, including multipath propagation, delay spread, fading characteristics, and Doppler effect, are only point-to-point wireless channels. In cellular mobile communication, a signal sent by a terminal is received by a plurality of neighboring base stations adjacent to the serving base station in addition to being received by the serving base station. The uplink channel interference constituting the neighboring base station (the radio channel of the terminal to the base station is generally referred to as an uplink channel, and the radio channel of the base station to the terminal is generally referred to as a downlink channel); likewise, the base station transmitting signal is received by a terminal in its service area, At the same time, it is also received by the terminal in the neighboring cell, thus constituting the downlink channel interference of the neighboring cell terminal. This specification refers to such a point-to-multipoint, multi-point-to-point wireless channel environment in a cellular wireless communication system as a wireless network channel. In addition to changes in the geographical environment and movement speed of the communication network, the wireless network channel has a close relationship with the cellular network topology.

The complexity, diversity, and time-varying of wireless network channels pose significant difficulties for wireless base station system design and system parameter configuration. Usually, wireless base station systems are difficult to predict system performance in a network environment before batch application; even if the base station system passes the laboratory system test. The system test environment built in the lab usually only supports point-to-point function and performance verification, that is, it only has wireless channel simulation capability and does not have wireless network channel simulation capability. It is also because the laboratory system test can not describe the characteristics of various wireless channels in the actual network environment. Usually, before the base station system is applied in batches, it is necessary to build a commercial experimental office of a certain scale to fully expose the problems in the base station system. The Scale Commercial Laboratory needs to invest huge sums of money and requires considerable construction and opening hours.

Wireless simulation technology plays an important role in wireless technology research and wireless system development. The complexity of wireless system development and wireless technology research is much higher than that of wired systems. This is mainly due to the fact that the wireless environment has greatly increased the complexity of wireless systems due to changes in time, location, geographical environment, weather environment, mobility, and interference. Wireless products must consider the impact of these factors, such as multipath, fading, channel correlation, noise, interference, and so on.

The development of wireless technology requires a rapid increase in transmission capacity, while spectrum utilization is constantly increasing, achieving high speed, large capacity, and high quality of communication over a limited spectrum. At present, MIMO technology, COMP technology, RELAY technology, carrier aggregation, and large bandwidth have become hotspots in new technologies.

Wireless communication technology is developing rapidly, new technologies are emerging, and channel simulation technology needs to be adapted. The need for new technology research and research and development.

At present, the wireless channel simulation technology mainly has soft simulation technology and channel simulator technology.

Soft simulation technology: Wireless modeling by tools such as MATLAB, output simulation results, generally running in PC; soft simulation technology is generally used for offline, non-real-time simulation.

Channel Simulator: Wireless modeling through embedded systems, real-time application of channel data generated by modeling to actual baseband data. The channel simulator needs to be designed to develop new hardware systems that enable point-to-point, real-time channel simulation.

At present, the channel dynamic range of the channel simulation system is above 80 DB, and the digital power dynamic range of the baseband data of the actual base station or terminal is generally about 30 DB. If the baseband data processed by the channel simulation system is directly in the digital domain, the dynamic range is large. Processing, which leads to signal loss problems with a fixed bit width, so the wireless channel simulation system must address the dynamic range problem. Summary of the invention

In view of the above, the present invention provides a dynamic range adjustment apparatus, method and system for a channel simulation system, which are used to solve the problem that the baseband data processed by the channel simulation system in the prior art directly performs large dynamic range processing on the digital domain, resulting in fixation. The problem of signal loss in the case of bit width.

In order to solve the above technical problems, the technical solutions adopted by the present invention are as follows:

In one aspect, the present invention provides a dynamic range adjustment apparatus for a channel simulation system, including: a script management module, configured to perform prescaling preprocessing on a channel data file of an external field, and obtain a channel script and a preset after the calibration Standard factor R0 script;

a power adjustment module, configured to acquire the scaling factor R0 script, and a power value P of the baseband signal output by the channel simulation system after performing channel processing according to the channel script preprocessed by the calibration, and combining the baseband supported by the subsequent device The dynamic range J1 and the subsequent device further perform the dynamic range J2 of the signal processing, obtain the baseband signal adjustment factor R1 required for the baseband signal power control, and the adjustment factor R2 for the signal processing of the subsequent device, and output the adjustment factor R2 to The latter device; a baseband signal power adjustment module, configured to perform power adjustment on the baseband signal output by the channel simulation system according to the channel script processed by the calibration pre-processed channel by using the adjustment factor R1, and adjust the adjusted baseband signal Output to the subsequent device.

In the device of the present invention, the power adjustment module further includes:

a parameter acquisition sub-module, configured to obtain a power value P of the baseband signal output by the calibration factor R0 script and the channel simulation system according to the channel script processed by the calibration pre-processing; and an adjustment factor generating sub-module Aligning the power value P with the J1, comparing the scaling factor R0 with the J2, determining whether the power value P is within the J1, and whether the scaling factor R0 is In the J2, if yes, the adjustment factor R1 is set to 0, and the adjustment factor R2 is set to R0; otherwise, the portion where the power value P exceeds J1 and/or the calibration factor R0 exceeds J2 is in the J1 And the compensation allocation in J2, obtaining the adjustment factor R1 and the adjustment factor R2 after the compensation is allocated;

And a factor output submodule, configured to output the adjustment factor R1 to the baseband signal power adjustment module, and output the adjustment factor R2 to the subsequent device.

Wherein, the adjustment factor generating module, when the part of the power value P exceeding J1, and/or the part of the scaling factor R0 exceeding J2 is compensated for allocation in the J1 and J2, the adjustment factor after the compensation is allocated Rl=- ( P-Jlmax ), R2=MAX ( R0+ P- Jlmax, J2max ); or, the adjustment factor Rl=- ( P- Jlmax ), R2= R0+ P- Jlmax, where the Jlmax and J2max represent dynamics The maximum of the range Jl and J2.

Further, the device of the present invention further includes:

The baseband and control word combining module is configured to combine the baseband signal processed by the baseband signal power adjustment module and the adjustment factor R2, and output the combined baseband signal to the subsequent device.

Further, the device of the present invention further includes: a calibration control module and/or a digital power measurement module; The scaling control module is configured to periodically send the scaling factor R0 script to the power adjustment module;

The digital power measurement module is configured to measure a power value P of the baseband signal output by the channel simulation system according to the channel script after the calibration pre-processing, and send the power value P to the The power adjustment module.

In another aspect, the present invention also provides a dynamic range adjustment method for a channel simulation system, including:

The channel data file of the external field is subjected to scaling preprocessing, and the channel script and the scaling factor R0 script after the calibration preprocessing are obtained;

And based on the scaling factor R0 script and the power value P of the baseband signal output by the channel simulation system according to the channel script after the calibration pre-processing, combined with the baseband dynamic range J1 and the supported by the subsequent device The level device further performs signal processing dynamic range J2, obtains a baseband signal adjustment factor R1 required for baseband signal power control, and an adjustment factor R2 for signal processing of the latter device, and outputs the adjustment factor R2 to the subsequent device;

And using the adjustment factor R1 to perform power adjustment on the baseband signal outputted by the channel simulation system according to the channel script after the calibration pre-processed channel script, and output the adjusted baseband signal to the subsequent device.

The baseband signal adjustment factor R1 required for obtaining the baseband signal power control and the adjustment factor R2 for the signal processing of the latter device are:

Comparing the power value P with the J1, comparing the scaling factor R0 with the J2, determining whether the power value P is within the J1, and whether the scaling factor R0 is in the In J2, if yes, the adjustment factor R1 is set to 0, and the adjustment factor R2 is set to R0; otherwise, the portion where the power value P exceeds J1 and/or the calibration factor R0 exceeds J2 in the J1 and The compensation is allocated within J2, and the adjustment factor R1 and the adjustment factor R2 after the compensation are obtained.

Further, the method of the present invention further includes: the portion of the power value P exceeding J1 and / or the portion of the scaling factor R0 that exceeds J2, when the compensation is allocated in the J1 and J2, the adjustment factor R1 = - ( P - Jlmax ), R2 = MAX ( R0 + P - Jlmax, J2max ); Or, the adjustment factor R1 = - ( P - Jlmax ), R2 = R0 + P - Jlmax, wherein the Jlmax and J2max represent the maximum values of the dynamic ranges J1 and J2.

Further, before the method for outputting the adjustment factor R2 and the adjusted baseband signal to the subsequent device, the method of the present invention further includes: combining the adjustment factor R2 and the adjusted baseband signal.

In still another aspect, the present invention also provides a dynamic range adjustment system for a channel simulation system, including: a channel simulation system, a dynamic range adjustment device, and a post-stage device;

The channel simulation system is configured to obtain a baseband signal, perform channel processing on the baseband signal according to the channel pre-processed channel script generated by the dynamic range adjusting device, and output the signal to the dynamic range adjusting device;

The dynamic range adjusting device is configured to perform prescaling preprocessing on the channel data file of the external field, and obtain a channel script and a scaling factor R0 script after the scaling preprocessing; based on the scaling factor R0 and the channel simulation system The power value P of the output baseband signal is combined with the baseband dynamic range J1 supported by the latter device and the dynamic range J2 of the signal processing by the latter device, and the baseband signal adjustment factor R1 required for the baseband signal power control is obtained. An adjustment factor R2 of the signal processing, and outputting the adjustment factor R2 to the subsequent device; and, by using the adjustment factor R1, performing power adjustment on the baseband signal output by the channel simulation system, and outputting the adjusted baseband signal to the subsequent stage Equipment

The subsequent device is configured to receive the adjusted baseband signal and the adjustment factor R2 of the dynamic range adjusting device, and process the received baseband signal based on the adjustment factor R2.

The beneficial effects of the present invention are as follows:

The device, the method and the system provided by the invention can compensate for pre-processing of the channel script, ensure that the channel simulation system reduces signal loss while ensuring that the channel effect is consistent with the actual external field channel; And can dynamically make full use of the dynamic range indicator of the digital signal, adjust the dynamic range of the adjustment factor part to the digital part, or adjust the digital dynamic excess to the adjustment factor, and then the large dynamic range processed by the channel simulation system. The baseband signal is controlled within a defined dynamic range, solving the problem of signal loss in the case of a fixed bit width and the effect of achieving a large dynamic range.

In addition, the apparatus, method and system provided by the invention support two-level dynamic range adjustment, which is more advantageous for realizing the decomposition of dynamic range indicators and supporting a larger dynamic range;

Furthermore, the apparatus, method and system provided by the present invention can greatly reduce the loss of signal caused by channel processing by pre-processing the channel fading. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, a brief description of the drawings used in the embodiments or the prior art description will be briefly described below. Obviously, the drawings in the following description For some embodiments of the present invention, other drawings may be obtained from those skilled in the art without departing from the drawings.

1 is a structural diagram of a dynamic range adjusting apparatus of a channel simulation system according to the present invention; FIG. 2 is a flowchart of dynamic range adjustment of a dynamic range adjusting apparatus of a channel simulation system according to an embodiment of the present invention;

FIG. 3 is a flowchart of a method for adjusting a dynamic range of a channel simulation system according to the present invention; FIG. 4 is a structural diagram of a dynamic range adjustment system for a channel simulation system according to the present invention. detailed description

The basic idea of the present invention is: a script management module, configured to perform prescaling preprocessing on a channel data file of an external field, and obtain a channel script and a scaling factor R0 script after scaling; a power adjustment module, configured to The scaling factor R0, and the power value P of the baseband signal output by the channel simulation system after channel processing according to the channel script after the calibration pre-processing, combined with the latter stage The baseband dynamic range supported by the device and the dynamic range of the signal processing are further processed by the device, and the baseband signal adjustment factor R1 and the adjustment factor R2 for the signal processing of the subsequent device are obtained, and the R2 is output to the subsequent device; the baseband signal power adjustment module , used for power adjustment of the baseband signal output by the channel analog system by using R1, and outputting the adjusted baseband signal to the subsequent device.

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to solve the problems in the prior art, the present invention provides a dynamic range adjustment apparatus, method and system for a channel simulation system, which are used to solve the problem that the baseband data processed by the channel simulation system in the prior art is directly performed on the digital domain. Dynamic range processing, resulting in signal loss in the case of a fixed bit width.

As shown in FIG. 1, the dynamic range adjusting device of the channel simulation system provided by the present invention includes:

The script management module 110 is configured to perform prescaling preprocessing on the channel data file of the external field, and obtain a channel script and a scaling factor R0 script after the scaling preprocessing;

The power adjustment module 120 is configured to obtain a power value P of the baseband signal output by the calibration factor R0 script and the channel simulation system according to the channel script after the calibration pre-processing, and the baseband dynamic range supported by the subsequent device The J1 and the latter equipment further perform the dynamic range J2 of the signal processing, obtain the baseband signal adjustment factor R1 required for the baseband signal power control, and the adjustment factor R2 of the signal processing performed by the latter device, and output the adjustment factor R2 to the subsequent device;

The baseband dynamic range J1 supported by the latter device and the dynamic range J2 for further signal processing of the subsequent device are preferably stored in a threshold register in the power adjustment module. The baseband signal power adjustment module 130 is configured to use the adjustment factor R1 to perform power adjustment on the baseband signal outputted by the channel simulation system according to the channel script preprocessed by the calibration, and adjust the baseband signal. Output to the subsequent device.

Specifically, in the device of the present invention, the power adjustment module 120 further includes: a parameter acquisition submodule 121, configured to acquire a calibration factor R0 script and a channel simulation system to perform channel according to the channel script preprocessed by the calibration The power value P of the baseband signal output after processing; the adjustment factor generation sub-module 122 is configured to compare the power value P with J1, compare the scaling factor R0 with J2, and when the power value P is within J1 and the scaling factor When R0 is within J2, the adjustment factor R1 is set to 0, and the adjustment factor R2 is set to R0; otherwise, the portion where the power value P exceeds J1 and/or the portion where the scaling factor R0 exceeds J2 is compensated for distribution in the J1 and J2. , obtaining the adjustment factor R1 and the adjustment factor R2 after the compensation is allocated;

Preferably, the adjustment factor generation sub-module 122 can determine the adjustment factor R1 and the adjustment factor R2 after the compensation distribution according to the basic principle of mutual compensation:

Rl=- ( P-Jlmax ) ; R2=MAX(R0+P- Jlmax , J2max); or, let Rl=-( P-Jlmax ); R2= R0+ P- Jlmax.

The factor output sub-module 123 is configured to output the adjustment factor R1 to the baseband signal power adjustment module 130, and output the adjustment factor R2 to the subsequent device.

Further, in order to reduce the amount of resources used by the test device to transmit data to the subsequent device, the device of the present invention preferably further includes:

The baseband and control word combining module 140 is configured to combine the baseband signal processed by the baseband signal power adjustment module 130 and the adjustment factor R2, and output the combined baseband signal to the subsequent device.

Further, in the present invention, the script management module 110, after generating the scaling factor R0 script, preferably sends the scaling factor R0 script to the power adjustment module 120 periodically by the scaling control module 150; wherein, the scaling control The module 150 can be triggered by a timer to periodically send a calibration factor Sub RO script;

Further, in the present invention, the power adjustment module 120 preferably measures the power value P of the baseband signal output by the channel simulation system by the digital power measurement module 160, and sends the power value P to the power adjustment module 120; or the power value P is buffered by the digital power register and sent to the power adjustment module 120.

In summary, the device provided by the present invention preprocesses a channel data file based on an actual channel set, and calibrates the channel data on a set equivalent fading channel value to obtain a channel script and a fixed channel. The standard factor R0 (ie, the number of DBs for the unified elevation of the original channel fading value, ie, the amplification factor) script; the channel script after the calibration is sent to the channel simulation system, and the channel simulation system uses the channel script after the calibration pre-processing Channel processing is performed on the baseband data, and the channel-processed data is inversely processed by the scaling factor R0 to ensure that the channel simulation system reduces signal loss while ensuring that the channel effect is consistent with the actual external channel. In addition, the present invention supports two-level dynamic range adjustment, which is more advantageous for realizing the decomposition of dynamic range indicators and supporting a larger dynamic range.

The following is a detailed description of the implementation of the technical solution of the device according to the present invention by taking the radio network channel emulation system to connect the UE device through the radio frequency unit as an example.

In this embodiment, it is assumed that the standard interface signal of the UE is a radio frequency signal, so the analog system needs to be connected to the UE through the radio unit RRU;

The baseband signal dynamic range of the baseband unit BBU is set to 20DB;

The dynamic range of the channel simulation system after channel processing is 80DB; the original channel dynamic range is -80~-160DB;

The baseband dynamic range that the RRU digital part can process in the post-device RF unit is assumed to be 30DB;

The dynamic range of the rear-stage equipment RF unit RRU simulation part is 50DB;

Dynamic Range Processing Device Threshold Register 1 (J1) records a dynamic range of 0 30DBFS; Threshold Register 2 (J2) records a dynamic range of 0~-50DBFS. £ Set the fading value of a channel sample of the external field set to -140DB;

Assume that the power of the current baseband signal is -20DBFS.

As shown in FIG. 2, the dynamic range adjustment apparatus of the channel simulation system provided by the embodiment of the present invention performs dynamic range processing as follows:

Step S201: The script management module performs scaling preprocessing on the channel data file of the external field, and adjusts the channel fading to -5DB, and obtains the channel script and the scaling factor R0=-55DB after the calibration preprocessing, and will determine The pre-processed channel script is sent to the channel emulation system.

Among them, the way to determine the calibration factor is:

Since the original channel dynamic range of the channel simulation system is -80 ~ -160DB, the dynamic range is equivalent to 0 - -80DB dynamic range, and when the channel fading value is -140DB, it is equivalent to -60DB in the dynamic range of 0 ~ -80DB; When the 4 bar channel fading is scaled to -5DB, the scaling factor should be taken as -55DB.

Step S202: The calibration control module downloads the scaling factor R0 according to the timer timing, and writes to the power control module.

Step S203: The digital power measurement module timing measurement channel simulation system performs the digital power value P of the baseband signal output after channel processing according to the channel script after the calibration pre-processing, and writes the obtained digital power value P to the digital power register.

Step S204: The power adjustment module obtains an adjustment factor R1 for the baseband signal and an adjustment factor R2 for performing signal processing on the subsequent device according to the scaling factor R0 and the actually measured digital power P.

In the embodiment of the present invention, the specific manners of determining the adjustment factors R1 and R2 are as follows:

(1) If the power value P is within the range of the threshold register 1, and the scaling factor R0 is within the threshold register 2, then let R1 = 0DB; R2 = R0;

(2) In other cases, let Rl=-( P-Jlmax ); R2=MAX(R0+ P- Jlmax, J2max); where Jlmax is the maximum value of the dynamic range stored in the threshold register 1; J2max is the threshold register 2 Stores the maximum value of the dynamic range. For the embodiment of the present invention, there are: Since R0=-55DB and the power value P=-20DBFS, it can be seen that P is within the range of the threshold register 1, and R0 is not in the range of the threshold register 2, and belongs to the situation described in the above (2). Using Rl=-( P-Jlmax ); R2=MAX(R0+ P- Jlmax, J2max), R1=-10DB can be obtained; R2=-45DB.

Step S205: The baseband signal power adjustment module amplifies or reduces the baseband signal output by the channel simulation system according to the adjusted R1 factor.

Step S206: The baseband and control word merging module combines the adjustment factor R2 onto the scaled baseband signal, and transmits the combined baseband signal to the subsequent device.

The latter device receives the baseband signal and the adjustment factor R2, and processes the received baseband signal based on the adjustment factor R2.

As shown in FIG. 3, the present invention further provides a dynamic range adjustment method for a channel simulation system, the method comprising:

Step S301: Perform calibration processing on the channel data file of the external field, and obtain a channel script and a scaling factor R0 script after the calibration is preprocessed;

Step S302, based on the scaling factor R0 and the channel simulation system, according to the channel script pre-processed channel script, the power value P of the baseband signal output after channel processing, combined with the baseband dynamic range J1 and the rear-level device supported by the latter device Further performing the dynamic range J2 of the signal processing, obtaining the baseband signal adjustment factor R1 required for the baseband signal power control and the adjustment factor R2 for the signal processing of the latter device, and outputting the adjustment factor R2 to the subsequent device;

The step is specifically: comparing the power value P with J1, and comparing the scaling factor R0 with J2. When the power value P is within J1 and the scaling factor R0 is within J2, the adjustment factor R1 is set to 0, and the adjustment factor is R2 is set to R0; otherwise, the portion where the power value P exceeds J1 and/or the portion where the scaling factor R0 exceeds J2 is compensated for distribution in J1 and J2, and the adjustment factor R1 and the adjustment factor R2 after compensation are obtained.

Preferably, the adjusted adjustment factor R1 and the adjustment factor R2 are: the adjustment factor Rl=- ( P-Jlmax ), R2=MAX ( R0+ P- Jlmax, J2max ); or, the adjustment factor Rl=- ( P- Jlmax ), R2= R0+ P- Jlmax.

Step S303, using the adjustment factor R1 to perform power adjustment on the baseband signal outputted by the channel simulation system according to the channel script after the calibration pre-processed channel script, and output the adjusted baseband signal to the subsequent device.

Preferably, in the method of the present invention, before the adjusting factor R2 and the adjusted baseband signal are output to the subsequent device, the method further comprises: combining the adjustment factor R2 and the adjusted baseband signal.

As shown in FIG. 4, the present invention further provides a dynamic range adjustment system for a channel simulation system, the system comprising: a channel simulation system, a dynamic range adjustment device, and a post-stage device;

a channel simulation system, configured to acquire a baseband signal, perform channel processing on the baseband signal according to the channel pre-processed channel script generated by the dynamic range adjusting device, and output the signal to the dynamic range adjusting device;

The dynamic range adjusting device is configured to perform prescaling preprocessing on the channel data file of the external field, obtain the channel script and the scaling factor R0 script after the scaling preprocessing; the baseband signal based on the scaling factor R0 and the channel simulation system output The power value P, combined with the baseband dynamic range J1 supported by the latter equipment and the dynamic range J2 of the signal processing by the latter equipment, obtains the baseband signal adjustment factor R1 required for baseband signal power control and the adjustment of the signal processing of the latter equipment. a factor R2, and outputting the adjustment factor R2 to the subsequent device; and, using the adjustment factor R1, performing power adjustment on the baseband signal output by the channel simulation system, and outputting the adjusted baseband signal to the subsequent device;

The subsequent device is configured to receive the adjusted baseband signal and the adjustment factor R2 of the dynamic range adjusting device, and process the received baseband signal based on the adjustment factor R2. The spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and modifications of

Claims

Claim

A dynamic range adjusting device for a channel simulation system, comprising: a script management module, configured to perform prescaling preprocessing on a channel data file of an external field, and obtain a channel script after calibration and preprocessing And scaling factor R0 script;

a power adjustment module, configured to acquire the scaling factor R0 script, and a power value P of the baseband signal output by the channel simulation system after performing channel processing according to the channel script preprocessed by the calibration, and combining the baseband supported by the subsequent device The dynamic range J1 and the subsequent device further perform the dynamic range J2 of the signal processing, obtain the baseband signal adjustment factor R1 required for the baseband signal power control, and the adjustment factor R2 for the signal processing of the subsequent device, and output the adjustment factor R2 to The baseband signal power adjustment module is configured to perform power adjustment on the baseband signal output by the channel simulation system according to the channel script processed by the calibration pre-processed channel by using the adjustment factor R1, and The adjusted baseband signal is output to the subsequent device.

2. The apparatus according to claim 1, wherein the power adjustment module further comprises:

3. The apparatus according to claim 2, wherein the adjustment factor generation module, When the portion where the power value P exceeds J1, and/or the portion where the scaling factor R0 exceeds J2 is compensated for distribution in the J1 and J2, the adjustment factor R1=-(P-Jlmax) after the compensation is allocated, R2 = MAX ( R0 + P - Jlmax, J2max ); or, the adjustment factor Rl = - ( P - Jlmax ) , R2 = R0 + P - Jlmax , wherein the Jlmax and J2max represent the maximum values of the dynamic ranges J1 and J2.

The apparatus according to any one of claims 1 to 3, further comprising: a baseband and control word combining module, configured to: baseband signal processed by said baseband signal power adjustment module; The adjustment factor R2 is combined and the combined baseband signal is output to the subsequent device.

5. The apparatus according to claim 1, wherein the apparatus further comprises: a scaling control module and/or a digital power measuring module;

The scaling control module is configured to periodically send the scaling factor R0 script to the power adjustment module;

A dynamic range adjustment method for a channel simulation system, characterized in that: the method comprises: performing prescaling preprocessing on a channel data file of the external field, obtaining a channel script and a scaling factor R0 script after the scaling preprocessing ;

And based on the scaling factor R0 script and the power value P of the baseband signal output by the channel simulation system according to the channel script after the calibration pre-processing, combined with the baseband dynamic range J1 and the subsequent stage supported by the subsequent device The device further performs signal processing dynamic range J2, obtains a baseband signal adjustment factor R1 required for baseband signal power control, and an adjustment factor R2 for signal processing of the latter device, and outputs the adjustment factor R2 to the subsequent device;

Using the adjustment factor R1, performing power adjustment on the baseband signal output by the channel simulation system according to the channel script after the calibration pre-processed channel script, and adjusting the base The signal is output to the downstream device.

The method according to claim 6, wherein the baseband signal adjustment factor R1 required for obtaining the baseband signal power control and the adjustment factor R2 for signal processing by the subsequent device are: the power value P and Aligning the scaling factor R0 with the J2, determining whether the power value P is within the J1, and whether the scaling factor R0 is within the J2, and if so, Then, the adjustment factor R1 is set to 0, and the adjustment factor R2 is set to R0; otherwise, the portion where the power value P exceeds J1 and/or the portion where the scaling factor R0 exceeds J2 is compensated for distribution in the J1 and J2, and compensation is obtained. The adjusted adjustment factor R1 and the adjustment factor R2.

8. The method of claim 7, wherein the method further comprises:

When the portion where the power value P exceeds J1 and/or the portion where the scaling factor R0 exceeds J2 is compensated for distribution in the J1 and J2, the adjustment factor R1=-(P-Jlmax) after the compensation is allocated. R2 = MAX ( R0 + P - Jlmax, J2max ); or, the adjustment factor Rl = - ( P - Jlmax ) , R2 = R0 + P - Jlmax , wherein the Jlmax and J2max represent the maximum values of the dynamic ranges J1 and J2.

The method according to any one of claims 6 to 8, wherein before the outputting the adjustment factor R2 and the adjusted baseband signal to the subsequent device, the method further comprises: The adjustment factor R2 and the adjusted baseband signal are combined.

10. A dynamic range adjustment system for a channel simulation system, the system comprising: a channel simulation system, a dynamic range adjustment device, and a post-stage device;

The dynamic range adjusting device is configured to perform prescaling preprocessing on the channel data file of the external field, and obtain a channel script and a scaling factor R0 script after the scaling preprocessing; based on the scaling factor R0 and the channel simulation system The power value P of the output baseband signal is combined with the baseband dynamic range J1 supported by the latter device and the dynamic range J2 of the signal processing by the subsequent device to obtain a baseband signal. The baseband signal adjustment factor R1 required for power control and the adjustment factor R2 of the signal processing performed by the subsequent device, and outputting the adjustment factor R2 to the subsequent device; and, using the adjustment factor R1, the baseband of the channel simulation system output The signal is adjusted in power, and the adjusted baseband signal is output to the subsequent device;