WO2004059868A1 - Procede d'etalonnage de systemes de reseaux d'antennes intelligents en temps reel - Google Patents
Procede d'etalonnage de systemes de reseaux d'antennes intelligents en temps reel Download PDFInfo
- Publication number
- WO2004059868A1 WO2004059868A1 PCT/CN2003/001118 CN0301118W WO2004059868A1 WO 2004059868 A1 WO2004059868 A1 WO 2004059868A1 CN 0301118 W CN0301118 W CN 0301118W WO 2004059868 A1 WO2004059868 A1 WO 2004059868A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- calibration
- link
- sequence
- antenna array
- receiving
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/24—Cell structures
- H04W16/28—Cell structures using beam steering
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/26—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system varying the relative phase or relative amplitude of energisation between two or more active radiating elements; varying the distribution of energy across a radiating aperture
- H01Q3/267—Phased-array testing or checking devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
Definitions
- the present invention relates to the smart antenna technology of a wireless communication system, and more particularly to a real-time calibration method for a smart antenna array system. Background of the invention
- Wireless base stations use smart antenna arrays and digital baseband signal-based processing technologies to adaptively shape the base station's receive and transmit beams, which can greatly reduce system interference, increase system capacity, reduce transmit power, and improve receive sensitivity.
- a base station structure of a wireless communication system using a modern smart antenna comprises an antenna array composed of one or more antenna units, a corresponding radio frequency feeding cable and one or more radio frequency transceivers connected correspondingly.
- the baseband signal processor obtains the space vector characteristics of the uplink signal and the direction of signal arrival (DOA), and then uses the weight of each link obtained from it for downlink
- DOA direction of signal arrival
- each transmit and receive link has the same amplitude.
- phase response, and the process and method of performing phase and amplitude compensation on each transmit and receive link is the calibration of the smart antenna to which the present invention relates. Due to the differences in the characteristics of various components, especially active devices, the sensitivity to the operating frequency and ambient temperature is different, and the characteristics of each transmit or receive link change due to the above reasons It is also different, so the calibration of the smart antenna array should be performed periodically while the wireless base station is running.
- an antenna unit 201, a coupling structure 205, a feeding cable 206, and a beacon receive and transmit signals.
- the calibration link formed by the serial connection of the transmitters 207, and the coupling structure 205 is RF-coupled to all the antenna units 201-1, 201-2, 201-N of the smart antenna array, and the radio frequency signals are distributed to the smart antennas as required.
- the beacon transceiver 207 has the same structure as the other radio frequency transceivers 203-1, 203-2, 203-N in the base station, and shares the same local oscillator signal source 208.
- the beacon transceiver 207 works in coherence with other radio frequency transceivers 203-1, 203-2, ... 203-N in the base station, and is connected to the baseband signal processor 204 of the base station through a digital bus. Each antenna unit, the feeder cable and the radio frequency transceiver are connected to form a transmitting link or a receiving link.
- Ac, A :, A 2 ... A N are the connection ends of the antenna unit and the feeding cables 202-1, 202-2, 202-N, and Bc, B 2 ,-.. B N are The connection ends of the beacon transceiver 207 and each of the radio frequency transceivers 203-1, 203-2, ... 203-N and the baseband signal processor 204.
- the beacon transceiver When calibrating, first use a vector network analyzer to calibrate the calibration link, and record its receive and transmit transmission coefficients respectively; then perform receive and transmit calibrations, respectively.
- the beacon transceiver When receiving calibration, transmits a level signal at a given working carrier frequency, and puts all other links in the base station in the receiving state, detects the output of these receiving links and calculates each chain.
- the ratio of the transmission coefficient (vector) of the channel at the time of reception to the transmission coefficient (vector) of the reference link, and when the ratio of the amplitude of the transmission coefficient is equal to 1, the phase difference between all the reception links and the reference link is recorded;
- one link in the base station is turned on in turn, the other links are turned off, and the beacon transceiver is Receive the signal of the transmitting link separately on the carrier frequency, calculate the ratio of the transmission coefficient (vector) of each link during transmission to the transmission coefficient (vector) of the reference link, and the ratio of the amplitude of the transmission coefficient equals 1
- the phase difference between all transmitting links and the reference link is recorded at the same time.
- the purpose of the present invention is to design a method for real-time calibration of a smart antenna array system and a method of forming a calibration signal.
- the smart antenna array system is periodically calibrated in real time, and the smart antenna array to be calibrated is calculated.
- the compensation coefficients of the system's receive link and transmit link.
- a method for real-time calibration of a smart antenna array system includes a receiving calibration process and a transmission calibration process; during transmission calibration, multiple transmission links simultaneously transmit calibration signals, and the calibration is performed by The receiver receives their combined signals; when receiving calibration, a calibration signal is transmitted by the calibration link, and the signal is received by multiple receiving links simultaneously; the synthetic signals received by the calibration link and the multiple signals are respectively received by the baseband signal processor.
- the signals received by the receiving link are calculated to obtain the compensation coefficients of each receiving link and each transmitting link of the smart antenna array system.
- pre-calibrate each antenna unit of the smart antenna array Before performing the receiving calibration and transmitting calibration processes in real time, pre-calibrate each antenna unit of the smart antenna array to obtain The transmission compensation coefficient c and the reception compensation coefficient c of each antenna unit relative to the calibration antenna unit are characterized by:
- the calibration signal of each antenna unit is formed from the basic calibration sequence by periodic cyclic shift,
- the calibration signal is a calibration sequence with good anti-white noise characteristics
- the baseband signal processor first calculates the amplitude and phase response of each transmit link based on the composite signal received by the calibration link, and then according to the amplitude and phase response of each transmit link and the emission during pre-calibration A compensation coefficient cf, which is calculated and obtained for each transmission link, and is used to compensate all downlink data of the base station;
- the baseband signal processor When receiving calibration, the baseband signal processor first calculates the amplitude and phase response of the receiving link based on the signals received by each receiving link, and then according to the amplitude and phase response of each receiving link and the reception during pre-calibration Compensation coefficient. Compensation coefficients for each receive link are calculated and used to compensate all uplink data of the base station.
- the pre-calibration before receiving and transmitting calibration in real time further includes: connecting one end of the vector network analyzer to the calibration antenna unit, and the other end to each antenna unit of the antenna array in sequence;
- the k-th antenna unit transmits a data signal at a fixed level, and is received by the calibration antenna unit to obtain an emission compensation coefficient c between each antenna unit and the calibration antenna unit; performing reception pre-calibration, and using the calibration antenna unit
- Pre-calibration is performed after the production of the smart antenna array is completed, and the obtained transmission compensation coefficient and reception compensation coefficient are stored; after the smart antenna array is installed at the base station site, the stored pre-calibrated transmission compensation coefficient and reception compensation coefficient are stored Enter the baseband signal processor of the base station.
- the length of the basic calibration sequence is WXN
- the length of the calibration sequence is WX N + Wl
- N is the number of antenna elements in the smart antenna array
- W is the estimated window length of each transmit or receive link channel.
- the transmission calibration and the reception calibration are profitable.
- step B during transmission calibration, the compensation coefficients of each transmission link are calculated and obtained.
- the channel impulse response of each transmission link is obtained, and then each transmission link includes a transmitter and a calibration chain.
- the amplitude and phase response information of the path between the antenna elements of the two channels is then multiplied by the transmission compensation coefficient of the corresponding link during pre-calibration to obtain the amplitude and phase response information of each link including the path between the transmitter and its antenna element. This can use the formula to calculate the transmission compensation coefficient of each link.
- step C when receiving calibration, calculating and obtaining the compensation coefficients of each receiving link further includes: first obtaining the channel impulse response of each receiving link, and then obtaining each receiving link including the calibration link The amplitude and phase response information of the path between the antenna unit and the receiver is then multiplied by the receive compensation coefficient of the corresponding link during pre-calibration to obtain the amplitude and phase response of each link including the path between the antenna unit and its receiver Based on this information, the formula can be used to calculate the receiving compensation coefficient of each link.
- a method for forming a calibration signal for real-time calibration of a smart antenna array system the calibration signal is formed by periodically cyclic shifting from a basic calibration sequence, and further includes: taking a length P
- the binary sequence m p is used as the basic calibration sequence; phase sequence is performed on the sequence m p to generate a complex vector of the calibration sequence; and the complex vector m P of the calibration sequence is periodically extended to obtain a new periodic complex vector.
- the periodic complex vector m_ obtains a calibration vector for each antenna element; the calibration signal for each antenna element is generated from the calibration vector for each antenna element.
- the method for real-time calibration of a smart antenna array system requires the setting of a dedicated
- the door is composed of an antenna unit, a feed cable and a beacon transceiver; before the antenna array leaves the factory, 'the antenna array is pre-calibrated first.
- the compensation coefficient of each antenna array unit relative to a calibrated antenna unit, and then store this compensation coefficient in the network management device of the wireless communication system; when the smart antenna array is installed on the site and works, this compensation coefficient Loaded into the base station connected to the smart antenna array.
- Calibration is performed periodically during the operation of the base station: during transmission calibration, a fixed level calibration sequence is simultaneously transmitted by the transmitting link, and the composite signal is received at the calibration link; when calibration is received, a fixed level is transmitted by the calibration link The calibration sequence receives this signal at the same time as the receiving link.
- the simple compensation coefficients of the receiving link and the transmitting link of the smart antenna array system to be calibrated can be calculated, so as to achieve the purpose of real-time calibration.
- the fixed-level calibration sequence used is generated from a basic sequence by cyclic shifting.
- the method of the present invention has a short calculation time and a simple control tube, and is particularly suitable for a third-generation mobile communication system with a high chip rate using a smart antenna technology.
- the method of the present invention is mainly proposed for a code division multiple access wireless communication system, after simple changes, it is also fully applicable to frequency division multiple access and time division multiple access wireless communication systems, and can be used to calibrate the intelligence of work in the TDD mode.
- the antenna array system can also be used to calibrate the smart antenna array system working in FDD mode.
- FIG. 1 is a schematic structural diagram of a wireless base station using a smart antenna array and provided with a calibration link;
- FIG. 2 is a schematic structural diagram of pre-calibrating a smart antenna array.
- the method of the present invention is based on that the antenna array is a passive microwave (radio frequency) network.
- the mutual coupling characteristics between the antenna elements constituting the antenna array and the calibration antenna unit are given in a given It is fixed at the operating frequency. In this way, it is only necessary to test each antenna unit of the antenna array relative to the calibrated antenna unit within a given operating frequency range before the antenna array product leaves the factory, that is, perform pre-calibration, and compensate each obtained antenna unit to the calibrated antenna unit
- the coefficients are stored as pre-calibrated data in a network management database.
- the pre-calibration data of this antenna array is loaded into the base station connected to this antenna array through network management equipment (such as 0MC-R or LMT).
- network management equipment such as 0MC-R or LMT.
- the method of the present invention is used in a typical time division duplex (TDD) code division multiple access wireless base station with a smart antenna.
- the structure of the base station is shown in FIG. 1. Including N identical antenna units 201 — 1, 201-2, 2, 201-N, N identical feeding power feeds 202-1, 202-2, ...., 202-N, N coherently working radio frequencies
- the transceivers 203-1, 203-2, ... 203-N and the corresponding baseband signal processors 204 In order to achieve calibration, a calibration link formed by connecting a radio frequency coupling structure 205, an antenna unit 201 of a calibration link, a feed cable 206, and a beacon transceiver 207 is provided.
- the beacon transceiver 207 and N radio frequency transceivers The machines 203-1, 203-2, ... 203-N work coherently and use a common local oscillator 208.
- the N radio frequency transceivers 203-1, 203-2, ... 203-N and the beacon transceiver 207 are connected to the baseband signal processor 204 through a data bus.
- the first step is to use a radio frequency (microwave) vector network analyzer.
- a radio frequency (microwave) vector network analyzer Before the smart antenna array leaves the factory, pre-calibrate each antenna unit of the smart antenna array to obtain the compensation coefficient of each antenna unit relative to a calibrated antenna unit.
- the RF vector network analyzer 21-end is connected to the antenna unit 201 of the calibration link through the Ac end, and the other end is sequentially connected to each antenna unit 201-1, 201- of the smart antenna array 208 through the kk ... end. 2 ... 201-N, to perform the measurement of transmit pre-calibration and receive pre-calibration, respectively.
- the channel characteristics between each antenna unit 201-1, 201-2, 201-N and the calibration antenna unit 201 are at a fixed operating frequency under the condition of no relative position damage. Under the conditions, they basically do not change with the environmental conditions, so they can be pre-calibrated and measured by the RF vector network analyzer 21.
- TX means transmission
- a fixed level data signal is transmitted by the antenna unit 201 of the calibration link, and each of the antenna units 2 01-1, 201 -2 ... 201 -N is transmitted.
- Receive, and measure the receiving compensation coefficients ⁇ to 4 (i 1, ... N) ⁇ (RX stands for reception) measured by the RF vector network analyzer 21 to obtain the calibration antenna unit 201 and each antenna unit 201-1, 201-
- the reception compensation coefficient c between 2 ... 201-N is strict.
- TDD time division duplex
- FDD frequency division duplex
- the second step is to input the results of the above pre-calibration (transmission compensation coefficient and reception compensation coefficient) into the network management device.
- the compensation coefficient of this antenna array is loaded into the baseband signal processor of the wireless base station connected to this antenna array through the network management equipment (such as 0MC-R or LMT).
- the third step is performed when the base station is started or running. Including generating calibration sequence; transmitting calibration, receiving calibration and calculating transmitting and receiving compensation coefficients.
- a basic calibration sequence with good anti-white noise characteristics is selected, and the calibration sequence is formed by periodic cyclic shift.
- the length P of the basic calibration sequence is WxN, where N is the number of working antenna units, ⁇ is the estimated window length of each link channel, and the length of the calibration sequence when doing transmit and receive calibration is WxN + W-1 is P + W-1.
- the duration of the calibration using the method of the present invention is very short. In some systems where the calibration duration is limited, Let N take a larger value in order to make the system get a larger antenna gain.
- phase equalize this basic calibration sequence m p to generate a complex vector P of the calibration sequence, that is, ((m 1 , m 2 , ..., m P ))
- Sequence vector w Lm is the window length, which is the length of the transmission calibration sequence
- the present invention also needs to calculate a vector S related to the basic calibration sequence, which is stored as a constant vector in the baseband processor, and is used to calculate the compensation coefficient when transmitting and receiving calibration:
- Choosing a basic calibration sequence is to choose a binary sequence of length P such that S has the smallest norm.
- Transmit calibration A fixed-level calibration sequence is transmitted by each antenna unit at the same time, and its composite signal is received on the calibration link.
- the baseband signal processor processes the data received by the antenna unit of the calibration link according to the algorithm provided by the present invention, calculates the amplitude and phase response of each transmitting link, and then according to their compensation coefficients (transmission compensation coefficients) during pre-calibration ) Calculate the compensation coefficient (including amplitude and phase compensation) of each transmit link, and use the compensation coefficient to compensate all the downlink data of the wireless base station in the baseband signal processor.
- These fixed-level signals pass through a radio frequency transceiver.
- 203-1 ... 203-N, feeder cables 202-1 ... 202-N, antenna units 201-1 ... 201-N, and the coupling structure 205 of the antenna array is calibrated to the antenna unit 201 of the link
- the baseband signal processor 204 calculates the data received from the calibration link (201, 206, 207), and obtains the amplitude and phase response information of each transmission link Sk ⁇ (should get Bk ⁇ Ak ⁇ A c ⁇ Bc amplitude and phase response information. Since the amplitude and phase response of the link between Ak ⁇ A c has been measured in the pre-calibration, only the amplitude and phase response information of B k ⁇ A k is needed).
- R be the complex vector received from the baseband signal processor 204 after the calibration sequence signal transmitted by each antenna unit 202- 1-2 () 2-N is superimposed on the calibration link antenna unit 201:
- the length of the truncated sequence is equal to the basic sequence P.
- R p is intercepted from the middle as expressed in the following formula (There can be multiple interception methods)
- fmax is an interpolation function for finding the peak value of the channel estimation result of the kth transmit link ⁇ , ⁇ ⁇ (the specific value depends on the calculation accuracy requirements), CIR k is a complex number, which includes the kth link ⁇ A c Amplitude and phase response information between channels;
- CIR k '' 0 is also a complex number and contains the kth transmission chain Amplitude and phase response information of the channels ⁇ ⁇ 4. Then, the amplitude and phase response information can be used to obtain the transmission compensation coefficient of the k-th link.
- Receiving calibration A fixed-level calibration sequence is transmitted by the calibration link, and the signal is received at each receiving link.
- the baseband signal processor calculates the amplitude and phase response information of each receiving link according to the data received by each receiving link using the algorithm provided by the present invention, and then according to them and the compensation coefficient (receiving compensation coefficient) during pre-calibration Calculate the compensation coefficient (including amplitude and phase compensation) for each receiving link, and use the compensation coefficient in the baseband signal processor to compensate all downlink data of the wireless base station.
- each receiving link receives the amplitude and phase response information of each receiving path (A k B k ) ( You should get the amplitude and phase response information of B c a "> A C ⁇ -A k ⁇ > B k . Since the amplitude and phase response of the link between ⁇ > has been measured in the pre-calibration, only 4 ⁇ Amplitude and phase response information of the path between Bk ).
- ⁇ be the complex vector of each link received by the baseband signal processor 204:
- the length of the truncated sequence is equal to the length P of the basic sequence, that is, the method of truncating from the middle expressed by the following formula is used. . N;
- a channel impulse response sequence of length P is obtained by the following operation:
- ⁇ N, fmax is an interpolation function for finding the peak value between the k-th received link channel estimation result cf ⁇ (the value depends on The calculation accuracy is required to be determined), ⁇ is a complex number, and it includes the amplitude and phase response signal ir of the k-th link ⁇ inter-path, and the receiving compensation of the path of Ac ⁇ A k obtained during pre-calibration with the k-link After multiplying the coefficients, we get:
- Mean_power (abs (CIR k )) 2 ) / N (abs is a function that finds the magnitude).
- the transmission compensation coefficient and the reception compensation coefficient on each link can be obtained by the following formula, but when calculating the compensation power of the reception link, the average power of the reception link and the CIR k obtained during the reception calibration are used to calculate When the compensation coefficient of the transmission link is used, the average power of the transmission link and the CJ obtained during the transmission calibration are used:
- the calibration method is independent in the process of transmitting and receiving calibration. Therefore, the method of the present invention is the same. It is suitable for FDD CDMA wireless base stations that use different antenna arrays for receiving and sending.
- the calculated transmission and reception compensation coefficients are used by the baseband signal processor to compensate the transmitted and received data respectively, and the real-time calibration function of the antenna array system is implemented by software.
- the real-time calibration can be performed using a guard slot (GP) between its upper and lower pilot slots (DwPTS and UpPTS) in its frame structure.
- GP guard slot
- Calibration can be performed periodically during the operation of the base station.
- Any technician who is engaged in the research and development of smart antenna calibration can easily implement the calibration of the smart antenna array system after referring to the method of the present invention on the basis of understanding the basic working principle of the smart antenna.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Transmission System (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
- Radar Systems Or Details Thereof (AREA)
- Mobile Radio Communication Systems (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2003292870A AU2003292870A1 (en) | 2002-12-25 | 2003-12-25 | A method for calibrating smart antenna array systems in real time |
JP2004562467A JP4452628B2 (ja) | 2002-12-25 | 2003-12-25 | リアル−タイムでスマート・アンテナ・アレイ・システムを較正する方法 |
KR1020057011989A KR100656979B1 (ko) | 2002-12-25 | 2003-12-25 | 스마트 안테나 어레이 시스템의 실시간 교정 방법 |
AT03782075T ATE445264T1 (de) | 2002-12-25 | 2003-12-25 | Verfahren zur kalibrierung intelligenter antennengruppensysteme in echtzeit |
EP03782075A EP1585231B1 (en) | 2002-12-25 | 2003-12-25 | A method for calibrating smart antenna array systems in real time |
DE60329629T DE60329629D1 (de) | 2002-12-25 | 2003-12-25 | Verfahren zur kalibrierung intelligenter antennengruppensysteme in echtzeit |
US11/166,514 US7102569B2 (en) | 2002-12-25 | 2005-06-23 | Method for calibrating smart antenna array systems in real time |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CNB021586233A CN1176555C (zh) | 2002-12-25 | 2002-12-25 | 一种对智能天线阵系统进行实时校准的方法 |
CN02158623.3 | 2002-12-25 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/166,514 Continuation US7102569B2 (en) | 2002-12-25 | 2005-06-23 | Method for calibrating smart antenna array systems in real time |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004059868A1 true WO2004059868A1 (fr) | 2004-07-15 |
Family
ID=27811378
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2003/001118 WO2004059868A1 (fr) | 2002-12-25 | 2003-12-25 | Procede d'etalonnage de systemes de reseaux d'antennes intelligents en temps reel |
Country Status (9)
Country | Link |
---|---|
US (1) | US7102569B2 (zh) |
EP (1) | EP1585231B1 (zh) |
JP (1) | JP4452628B2 (zh) |
KR (1) | KR100656979B1 (zh) |
CN (1) | CN1176555C (zh) |
AT (1) | ATE445264T1 (zh) |
AU (1) | AU2003292870A1 (zh) |
DE (1) | DE60329629D1 (zh) |
WO (1) | WO2004059868A1 (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111684310A (zh) * | 2018-02-08 | 2020-09-18 | 上海诺基亚贝尔股份有限公司 | 一种对天线阵列进行盲校准的方法和装置 |
Families Citing this family (74)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR101019521B1 (ko) * | 2003-12-31 | 2011-03-07 | 지티이 코포레이션 | 어레이 안테나 전송링크의 조정장치 및 방법 |
CN100399719C (zh) * | 2005-02-03 | 2008-07-02 | 芯通科技(成都)有限公司 | 智能天线阵的校准方法和具有校准功能的射频收发信机 |
US20060240784A1 (en) * | 2005-04-22 | 2006-10-26 | Qualcomm Incorporated | Antenna array calibration for wireless communication systems |
US8498669B2 (en) | 2005-06-16 | 2013-07-30 | Qualcomm Incorporated | Antenna array calibration for wireless communication systems |
US7672668B2 (en) * | 2005-09-07 | 2010-03-02 | Samsung Electronics Co., Ltd. | Calibration system architecture for calibrating multiple types of base stations in a wireless network |
US8320903B2 (en) * | 2005-09-07 | 2012-11-27 | Samsung Electronics Co., Ltd. | Method and system for calibrating multiple types of base stations in a wireless network |
US8280430B2 (en) | 2005-11-02 | 2012-10-02 | Qualcomm Incorporated | Antenna array calibration for multi-input multi-output wireless communication systems |
US9118111B2 (en) | 2005-11-02 | 2015-08-25 | Qualcomm Incorporated | Antenna array calibration for wireless communication systems |
US8295884B2 (en) * | 2005-11-22 | 2012-10-23 | Samsung Electronics Co., Ltd | Method and system for providing digital compensation and vector calibration for a base station in a wireless network |
CN101064902B (zh) * | 2006-04-25 | 2010-11-10 | 大唐移动通信设备有限公司 | 实时校准智能天线的方法 |
CN101080031B (zh) * | 2006-05-26 | 2011-02-02 | 大唐移动通信设备有限公司 | 基带拉远技术的智能天线校准系统及其方法 |
CN101188448B (zh) * | 2006-11-15 | 2011-09-14 | 电信科学技术研究院 | 一种智能天线的校准方法、装置及系统 |
US8055300B2 (en) * | 2007-08-29 | 2011-11-08 | Telefonaktiebolaget Lm Ericsson (Publ) | System and method for indoor coverage of user equipment terminals |
EP2183817B1 (en) * | 2007-08-31 | 2017-11-08 | BAE Systems PLC | Antenna calibration |
WO2009027723A1 (en) | 2007-08-31 | 2009-03-05 | Bae Systems Plc | Antenna calibration |
AU2008291899A1 (en) * | 2007-08-31 | 2009-03-05 | Bae Systems Plc | Antenna calibration |
WO2009027725A1 (en) * | 2007-08-31 | 2009-03-05 | Bae Systems Plc | Antenna calibration |
CN101383647B (zh) * | 2007-09-06 | 2012-01-11 | 电信科学技术研究院 | 对工作天线进行校准的方法及装置 |
CN101227242B (zh) * | 2008-01-31 | 2011-06-01 | 西安交通大学 | 一种基于通道校正的分布式天线阵列波束形成方法 |
JP4471006B2 (ja) | 2008-02-04 | 2010-06-02 | ソニー株式会社 | 無線通信装置、アンテナ較正方法、およびプログラム |
CN101552994B (zh) * | 2008-04-02 | 2011-04-20 | 大唐移动通信设备有限公司 | 一种收校准和发校准错开的方法及装置 |
GB2461082A (en) * | 2008-06-20 | 2009-12-23 | Ubidyne Inc | Antenna array calibration with reduced interference from a payload signal |
JP5153507B2 (ja) * | 2008-08-04 | 2013-02-27 | 三菱電機株式会社 | 無線通信装置 |
US8193971B2 (en) * | 2008-11-10 | 2012-06-05 | Motorola Mobility, Inc. | Antenna reciprocity calibration |
CN102460828B (zh) * | 2009-06-08 | 2015-06-03 | 英特尔公司 | 用于无线网络的具有自适应预失真的多元件幅度和相位补偿天线阵列 |
US8731005B2 (en) | 2009-10-12 | 2014-05-20 | Kathrein-Werke Kg | Absolute timing and Tx power calibration of the Tx path in a distributed system |
KR101285388B1 (ko) * | 2009-12-18 | 2013-07-10 | 한국전자통신연구원 | 빔 조향 장치 |
CN102136858B (zh) * | 2010-01-25 | 2014-07-02 | 中国移动通信集团公司 | 一种基站校准方法和校准装置 |
CN102111202B (zh) * | 2010-02-05 | 2014-05-21 | 电信科学技术研究院 | 一种天线校准的方法及装置 |
US8634766B2 (en) | 2010-02-16 | 2014-01-21 | Andrew Llc | Gain measurement and monitoring for wireless communication systems |
US8374826B2 (en) | 2010-02-22 | 2013-02-12 | Ubidyne, Inc. | System, apparatus and method for calibrating a delay along a signal path |
US8441966B2 (en) | 2010-03-31 | 2013-05-14 | Ubidyne Inc. | Active antenna array and method for calibration of receive paths in said array |
US8340612B2 (en) | 2010-03-31 | 2012-12-25 | Ubidyne, Inc. | Active antenna array and method for calibration of the active antenna array |
US8311166B2 (en) | 2010-03-31 | 2012-11-13 | Ubidyne, Inc. | Active antenna array and method for calibration of the active antenna array |
US8774196B2 (en) | 2010-06-03 | 2014-07-08 | Kathrein-Werke Kg | Active antenna array and method for relaying radio signals with synchronous digital data interface |
US8599861B2 (en) | 2010-06-03 | 2013-12-03 | Kathrein-Werke Kg | Active antenna array and method for relaying radio signals |
KR101419420B1 (ko) * | 2010-06-03 | 2014-08-13 | 노키아 솔루션스 앤드 네트웍스 오와이 | 기지국 캘리브레이션 |
US8791767B2 (en) * | 2010-10-29 | 2014-07-29 | Qualcomm Incorporated | Package inductance compensating tunable capacitor circuit |
CN102148636B (zh) * | 2011-01-27 | 2013-09-04 | 大唐移动通信设备有限公司 | 一种天线校准的方法和系统 |
US8676192B2 (en) | 2011-02-09 | 2014-03-18 | Qualcomm Incorporated | High data rate aircraft to ground communication antenna system |
CN102651672B (zh) * | 2011-02-25 | 2015-02-04 | 中国移动通信集团公司 | 一种用于协作式mimo系统的基站校准方法及装置 |
GB2489002A (en) * | 2011-03-14 | 2012-09-19 | Nujira Ltd | Delay adjustment to reduce distortion in an envelope tracking transmitter |
CN102790636B (zh) * | 2011-05-17 | 2015-01-28 | 普天信息技术研究院有限公司 | 一种智能天线校准序列的发送方法 |
US8970427B2 (en) | 2011-05-18 | 2015-03-03 | Mediatek Singapore Pte. Ltd. | Phase-arrayed device and method for calibrating the phase-arrayed device |
US9319172B2 (en) | 2011-10-14 | 2016-04-19 | Qualcomm Incorporated | Interference mitigation techniques for air to ground systems |
EP2769483A4 (en) * | 2011-10-21 | 2015-07-01 | Optis Cellular Technology Llc | METHOD, PROCESSING DEVICE, COMPUTER PROGRAMS, COMPUTER PROGRAM PRODUCTS, ANTENNA DEVICE AND CALIBRATION OF AN ANTENNA DEVICE |
CN102497223B (zh) * | 2011-12-05 | 2014-01-15 | 北京北方烽火科技有限公司 | 一种td-lte天线阵列校准方法与装置 |
CN102412917B (zh) * | 2011-12-16 | 2014-04-16 | 哈尔滨工业大学深圳研究生院 | 基于网络分析仪和射频开关的多天线测量系统及方法 |
US9762283B2 (en) * | 2012-09-13 | 2017-09-12 | Telefonaktiebolaget Lm Ericsson (Publ) | Method and apparatus for antenna calibration |
CN102932039B (zh) * | 2012-10-17 | 2015-03-25 | 大唐移动通信设备有限公司 | 一种天线校准方法和系统 |
CN103916168B (zh) * | 2013-01-04 | 2018-02-23 | 中国移动通信集团公司 | 一种天线校准方法及装置 |
CN103916176B (zh) * | 2013-01-04 | 2018-08-10 | 中国移动通信集团公司 | 一种无线直放站及其天线校准方法 |
CN103117786B (zh) * | 2013-01-18 | 2015-10-07 | 大唐移动通信设备有限公司 | 一种天线阵列校准方法和系统 |
JP6329348B2 (ja) * | 2013-08-13 | 2018-05-23 | 株式会社Nttドコモ | 基地局装置、およびキャリブレーション方法 |
GB2517217B (en) * | 2013-08-16 | 2018-03-21 | Analog Devices Global | Communication unit, integrated circuit and method for generating a plurality of sectored beams |
CN107078780B (zh) * | 2014-12-09 | 2020-06-26 | 华为技术有限公司 | 一种确定校准权值系数的方法及基站 |
KR101556067B1 (ko) | 2014-12-12 | 2015-10-13 | 한국항공우주연구원 | 어레이 안테나 송신장치 및 그 교정방법 |
CN104702351B (zh) * | 2015-01-07 | 2017-05-17 | 成都九洲迪飞科技有限责任公司 | 天线校准方法 |
GB2543563B (en) * | 2015-10-23 | 2020-02-12 | Cambium Networks Ltd | Method and Apparatus for Controlling Equivalent Isotropic Radiated Power |
WO2017145257A1 (ja) * | 2016-02-23 | 2017-08-31 | 三菱電機株式会社 | アレーアンテナ装置およびその校正方法 |
US10263330B2 (en) * | 2016-05-26 | 2019-04-16 | Nokia Solutions And Networks Oy | Antenna elements and apparatus suitable for AAS calibration by selective couplerline and TRX RF subgroups |
DE102016212136A1 (de) * | 2016-07-04 | 2018-01-04 | Laird Bochum GmbH | Verfahren und Vorrichtung zur Bestimmung einer Distanz sowie Fahrzeug |
JP6645369B2 (ja) | 2016-07-06 | 2020-02-14 | 富士通株式会社 | 無線通信システム、及び、基地局 |
CN107782979B (zh) * | 2016-08-25 | 2019-04-09 | 西安电子科技大学 | 利用矢量网络分析仪检测电磁波涡旋态的方法及装置 |
EP3293897B8 (en) | 2016-09-12 | 2020-08-12 | Rohde & Schwarz GmbH & Co. KG | System and method for characterization of multi-element antenna |
CN110178315B (zh) * | 2017-01-24 | 2020-10-23 | 华为技术有限公司 | 一种天线校正方法及装置 |
US10128894B1 (en) * | 2017-05-09 | 2018-11-13 | Analog Devices Global | Active antenna calibration |
CN110768701B (zh) * | 2018-07-27 | 2022-10-28 | 中兴通讯股份有限公司 | 信道状态处理方法及装置、系统、终端、基站、存储介质 |
US11276928B1 (en) | 2019-04-10 | 2022-03-15 | The Governors Of The University Of Alberta | Calibrating/monitoring method and apparatus for phased array antenna employing very near field |
CN110429993B (zh) * | 2019-06-17 | 2022-01-25 | 北京睿信丰科技有限公司 | 一种宽频单载波天线校准方法及校准系统 |
WO2020256607A1 (en) * | 2019-06-20 | 2020-12-24 | Telefonaktiebolaget Lm Ericsson (Publ) | Network node and method in a wireless communications network |
CN111490835B (zh) * | 2020-03-05 | 2022-08-26 | 西安宇飞电子技术有限公司 | 一种窄带信号自校准方法、装置及设备 |
JP7012914B1 (ja) * | 2020-03-23 | 2022-01-28 | 三菱電機株式会社 | アレーアンテナの校正装置および校正方法 |
CN115913404A (zh) * | 2021-09-30 | 2023-04-04 | 深圳市中兴微电子技术有限公司 | 天线校准方法、装置和远程射频单元 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5546090A (en) * | 1991-12-12 | 1996-08-13 | Arraycomm, Inc. | Method and apparatus for calibrating antenna arrays |
CN1283901A (zh) * | 1999-08-10 | 2001-02-14 | 信息产业部电信科学技术研究院 | 一种校准智能天线阵的方法和装置 |
CN1078390C (zh) * | 1994-06-03 | 2002-01-23 | 艾利森电话股份有限公司 | 天线阵列校正 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6157343A (en) * | 1996-09-09 | 2000-12-05 | Telefonaktiebolaget Lm Ericsson | Antenna array calibration |
US5682165A (en) * | 1996-05-02 | 1997-10-28 | Hughes Electronics | Active array self calibration |
US6236839B1 (en) * | 1999-09-10 | 2001-05-22 | Utstarcom, Inc. | Method and apparatus for calibrating a smart antenna array |
JP4303373B2 (ja) * | 1999-09-14 | 2009-07-29 | 株式会社日立コミュニケーションテクノロジー | 無線基地局装置 |
CN1170450C (zh) * | 2002-09-13 | 2004-10-06 | 大唐移动通信设备有限公司 | 对智能天线阵进行实时校准的方法 |
US6720919B1 (en) * | 2002-09-20 | 2004-04-13 | Lucent Technologies Inc. | Phased array calibration using sparse arbitrarily spaced rotating electric vectors and a scalar measurement system |
-
2002
- 2002-12-25 CN CNB021586233A patent/CN1176555C/zh not_active Expired - Lifetime
-
2003
- 2003-12-25 WO PCT/CN2003/001118 patent/WO2004059868A1/zh active IP Right Grant
- 2003-12-25 AU AU2003292870A patent/AU2003292870A1/en not_active Abandoned
- 2003-12-25 DE DE60329629T patent/DE60329629D1/de not_active Expired - Lifetime
- 2003-12-25 JP JP2004562467A patent/JP4452628B2/ja not_active Expired - Lifetime
- 2003-12-25 KR KR1020057011989A patent/KR100656979B1/ko active IP Right Grant
- 2003-12-25 AT AT03782075T patent/ATE445264T1/de not_active IP Right Cessation
- 2003-12-25 EP EP03782075A patent/EP1585231B1/en not_active Expired - Lifetime
-
2005
- 2005-06-23 US US11/166,514 patent/US7102569B2/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5546090A (en) * | 1991-12-12 | 1996-08-13 | Arraycomm, Inc. | Method and apparatus for calibrating antenna arrays |
CN1078390C (zh) * | 1994-06-03 | 2002-01-23 | 艾利森电话股份有限公司 | 天线阵列校正 |
CN1283901A (zh) * | 1999-08-10 | 2001-02-14 | 信息产业部电信科学技术研究院 | 一种校准智能天线阵的方法和装置 |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111684310A (zh) * | 2018-02-08 | 2020-09-18 | 上海诺基亚贝尔股份有限公司 | 一种对天线阵列进行盲校准的方法和装置 |
CN111684310B (zh) * | 2018-02-08 | 2023-08-22 | 上海诺基亚贝尔股份有限公司 | 一种对天线阵列进行盲校准的方法和装置 |
Also Published As
Publication number | Publication date |
---|---|
EP1585231A4 (en) | 2006-12-06 |
EP1585231A1 (en) | 2005-10-12 |
AU2003292870A1 (en) | 2004-07-22 |
CN1446000A (zh) | 2003-10-01 |
JP2006512807A (ja) | 2006-04-13 |
ATE445264T1 (de) | 2009-10-15 |
KR20050089853A (ko) | 2005-09-08 |
CN1176555C (zh) | 2004-11-17 |
US20060009162A1 (en) | 2006-01-12 |
KR100656979B1 (ko) | 2006-12-13 |
DE60329629D1 (de) | 2009-11-19 |
EP1585231B1 (en) | 2009-10-07 |
US7102569B2 (en) | 2006-09-05 |
JP4452628B2 (ja) | 2010-04-21 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2004059868A1 (fr) | Procede d'etalonnage de systemes de reseaux d'antennes intelligents en temps reel | |
US10734722B2 (en) | Beamforming method, apparatus for polarized antenna array and radio communication device and system thereof | |
KR101019521B1 (ko) | 어레이 안테나 전송링크의 조정장치 및 방법 | |
US6195045B1 (en) | Adaptive antenna array system calibration | |
US8619886B2 (en) | Method and system for mixed analog/digital beamforming in wireless communication systems | |
JP4402294B2 (ja) | アンテナ・アレイを備えた通信端末を較正するための空間的なシグネチャを決定するための方法および装置 | |
US7308287B2 (en) | Compensation techniques for group delay effects in transmit beamforming radio communication | |
US9300382B2 (en) | Wireless signal processor and wireless apparatus | |
US7831232B2 (en) | Multiple input multiple output communication apparatus | |
WO2002078209A2 (en) | Method for calibrating a smart-antenna array, radio transceiver unit and calibrating system | |
WO2005117286A1 (en) | An calibration apnaratus and methnd for a receiving link of array communication system | |
CN108540181B (zh) | 一种天线校准的方法及装置 | |
CN100397806C (zh) | 移动通信系统中用于校准接收信号的方法和装置 | |
WO2016192070A1 (zh) | 多输入多输出传输方法、终端及基站 | |
US8554149B2 (en) | Directivity control system, control device, cooperative station device, reception station device, and method of controlling directivity | |
WO2012159410A1 (zh) | 波束赋形方法及装置 | |
JP4465383B2 (ja) | アレーアンテナ制御方法、受信アンテナ装置、および無線通信システム | |
WO2018115974A2 (zh) | 用于大规模mimo系统的波束形成的方法和设备 | |
EP4298731A1 (en) | Multi-antenna wireless transceiver and method for mimo beamforming | |
WO2024063926A1 (en) | Computation-based detuning of coupled antennas | |
WO2011134186A1 (zh) | 一种发送数据的方法及装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BY BZ CA CH CO CR CU CZ DE DK DM DZ EC EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 2460/DELNP/2005 Country of ref document: IN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 11166514 Country of ref document: US |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020057011989 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004562467 Country of ref document: JP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2003782075 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 1020057011989 Country of ref document: KR |
|
WWP | Wipo information: published in national office |
Ref document number: 2003782075 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 11166514 Country of ref document: US |
|
WWG | Wipo information: grant in national office |
Ref document number: 1020057011989 Country of ref document: KR |