WO2012162931A1 - Appareil, procédé et système pour régler la plage dynamique d'un système de simulation de canal - Google Patents

Appareil, procédé et système pour régler la plage dynamique d'un système de simulation de canal Download PDF

Info

Publication number
WO2012162931A1
WO2012162931A1 PCT/CN2011/077320 CN2011077320W WO2012162931A1 WO 2012162931 A1 WO2012162931 A1 WO 2012162931A1 CN 2011077320 W CN2011077320 W CN 2011077320W WO 2012162931 A1 WO2012162931 A1 WO 2012162931A1
Authority
WO
WIPO (PCT)
Prior art keywords
channel
baseband signal
factor
adjustment
adjustment factor
Prior art date
Application number
PCT/CN2011/077320
Other languages
English (en)
Chinese (zh)
Inventor
陈诗军
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Publication of WO2012162931A1 publication Critical patent/WO2012162931A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
    • H04B17/0087—Monitoring; Testing using service channels; using auxiliary channels using auxiliary channels or channel simulators

Definitions

  • 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.
  • 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.
  • 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).
  • 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.
  • 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.
  • 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.
  • the wireless network channel has a close relationship with the cellular network topology.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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
  • 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 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.
  • 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;
  • 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.
  • 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.
  • 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.
  • 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;
  • 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;
  • 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:
  • the method of the present invention further includes: combining the adjustment factor R2 and the adjusted baseband signal.
  • 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.
  • 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 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.
  • 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;
  • 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.
  • FIG. 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 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.
  • the dynamic range adjusting device of the channel simulation system 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.
  • 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;
  • 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:
  • 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.
  • 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.
  • 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;
  • 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.
  • 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
  • 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.
  • 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 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;
  • 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;
  • the dynamic range adjustment apparatus of the channel simulation system provided by the embodiment of the present invention performs dynamic range processing as follows:
  • the way to determine the calibration factor is:
  • the dynamic range is equivalent to 0 - -80DB dynamic range
  • the channel fading value is -140DB
  • it is equivalent to -60DB in the dynamic range of 0 ⁇ -80DB
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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.
  • the method 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.
  • 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.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte à un appareil, à un procédé et à un système adaptés pour régler la plage dynamique d'un système de simulation de canal. L'appareil selon l'invention comprend : un module de gestion de script, qui sert à étalonner un fichier de données de canal collectées sur le terrain dans le but d'obtenir un script de canal d'étalonnage prétraité et un script de facteur d'étalonnage R0 ; et un module de réglage de puissance, qui sert à obtenir un facteur de réglage de signal dans la bande de base R1 et un facteur de réglage R2 pour un dispositif de post-traitement dans le but de traiter des signaux. Le module de réglage de puissance sert d'autre part à transmettre le facteur de réglage R2 au dispositif de post-traitement, sur la base du facteur d'étalonnage R0 et de la valeur de puissance P du signal dans la bande de base délivré en sortie par le système de simulation de canal sur la base du script de canal d'étalonnage prétraité. Ensuite, en connexion avec une plage dynamique dans la bande de base qui est prise en charge par le dispositif de post-traitement et en connexion avec une plage dynamique, le dispositif de post-traitement traite les signaux qui lui ont été transmis. L'appareil selon l'invention comprend également un module de réglage de puissance de signal dans la bande de base, qui sert à régler la puissance du signal dans la bande de base qui a été délivré en sortie par le système de simulation de canal, au moyen du facteur de réglage R1, et à transmettre le signal dans la bande de base réglé au dispositif de post-traitement. La solution technique de la présente invention permet de réaliser le réglage de la plage dynamique du système de simulation de canal.
PCT/CN2011/077320 2011-05-27 2011-07-19 Appareil, procédé et système pour régler la plage dynamique d'un système de simulation de canal WO2012162931A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201110140127.XA CN102801483B (zh) 2011-05-27 2011-05-27 一种在线测试装置、方法和系统
CN201110140127.X 2011-05-27

Publications (1)

Publication Number Publication Date
WO2012162931A1 true WO2012162931A1 (fr) 2012-12-06

Family

ID=47200464

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2011/077320 WO2012162931A1 (fr) 2011-05-27 2011-07-19 Appareil, procédé et système pour régler la plage dynamique d'un système de simulation de canal

Country Status (2)

Country Link
CN (1) CN102801483B (fr)
WO (1) WO2012162931A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104717028A (zh) * 2013-12-13 2015-06-17 上海无线通信研究中心 一种基于硬件在环的无线链路验证系统及方法
CN110471855A (zh) * 2019-08-21 2019-11-19 小胡杨信息技术(武汉)有限公司 一种计算机应用软件测试系统及方法
CN111600666A (zh) * 2020-05-13 2020-08-28 深圳市共进电子股份有限公司 无线通信模拟测试系统

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1829152A (zh) * 2005-03-04 2006-09-06 华为技术有限公司 一种可扩展信道模拟范围的信道模拟装置和方法
CN1960221A (zh) * 2006-09-30 2007-05-09 上海华为技术有限公司 一种信道模拟装置、信道模拟系统和信道模拟方法
US20090299717A1 (en) * 2008-05-30 2009-12-03 Xueyuan Zhao Enhanced channel simulator for efficient antenna evaluation
US20100063791A1 (en) * 2008-09-05 2010-03-11 Zhu Wen System And Method For Channel Emulator Performance Measurement And Evaluation

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100461655C (zh) * 2007-04-28 2009-02-11 北京交通大学 实际信道结合计算机仿真测试信道传输性能的系统及方法
CN101282181B (zh) * 2008-05-06 2011-06-01 西安交通大学 带衰落信道仿真器的实现方法
CN101860385B (zh) * 2010-06-23 2012-09-05 西安交通大学 一种多输入多输出无线通信系统的信道建模方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1829152A (zh) * 2005-03-04 2006-09-06 华为技术有限公司 一种可扩展信道模拟范围的信道模拟装置和方法
CN1960221A (zh) * 2006-09-30 2007-05-09 上海华为技术有限公司 一种信道模拟装置、信道模拟系统和信道模拟方法
US20090299717A1 (en) * 2008-05-30 2009-12-03 Xueyuan Zhao Enhanced channel simulator for efficient antenna evaluation
US20100063791A1 (en) * 2008-09-05 2010-03-11 Zhu Wen System And Method For Channel Emulator Performance Measurement And Evaluation

Also Published As

Publication number Publication date
CN102801483B (zh) 2016-04-13
CN102801483A (zh) 2012-11-28

Similar Documents

Publication Publication Date Title
US10903888B2 (en) Configuration method and configuration device for reference signal and communication node
JP5613829B2 (ja) ベースステーションの校正
US10051579B2 (en) Channel simulator using path loss of terminal transmit power to establish attenuation amount in uplink signal to base station
US8447327B2 (en) Method and apparatus for a buffering scheme for OTDOA based location positioning
US11664876B2 (en) Method and device for training downlink beams
CN101455016A (zh) 无线基站和控制无线基站的方法
KR20140088239A (ko) 이동통신 시스템에서 랜덤 퍼터베이션을 적용한 빔포밍 방법 및 장치
CN110024303B (zh) 用于发送信息的方法和设备
WO2014114106A1 (fr) Procédé de réception de données de liaison montante et appareil pour dispositif émetteur-récepteur sans fil
WO2012162931A1 (fr) Appareil, procédé et système pour régler la plage dynamique d'un système de simulation de canal
CN102801482B (zh) 一种信道模拟系统的动态范围调整装置、方法和系统
CN110326233B (zh) 用于在无线通信系统中进行接收的方法和装置
WO2017173916A1 (fr) Procédé et appareil de commande automatique de gain en phase d'apprentissage de faisceau
CN113632385B (zh) 下行链路参考信号的波束成形接收
WO2017041211A1 (fr) Procédé, dispositif et système de transmission de données
KR102386229B1 (ko) 무선 통신 시스템에서 간섭 측정 방법 및 장치
WO2020118600A1 (fr) Procédé et appareil pour systèmes à antennes multiples
KR101987815B1 (ko) 캘리브레이션 기능을 구비한 매시브 ｍｉｍｏ용 채널 시뮬레이터
CN102892126B (zh) 一种多频点室内无线网络信道实现方法和装置
CN113572542A (zh) 一种高精度的射频拉远单元驻波比检测装置及方法
KR20090080881A (ko) 시간영역 채널 값의 양자화를 이용한 채널 상태 전달 방법
US20240056165A1 (en) Relay station, transmission method for relay station, and communication system
WO2019056596A1 (fr) Procédé pour tester la performance de rayonnement d'une antenne, et système de test
US20230361738A1 (en) Impulse noise mitigation in communication systems
WO2024065114A1 (fr) Procédé et appareil de transmission de pusch, support, et produit

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 11866588

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 11866588

Country of ref document: EP

Kind code of ref document: A1