Datang Mobile Communications Equipment Co., Ltd.

International Business Machines Corporation

Times Microwave Systems, Inc.

Da Tang Mobile Communication Co., Ltd.

Cict Mobile Communication Technology Co., Ltd.

Tao Duan

Shihua Wang

Huarong Sun

Jieli Wang

Jun Xiong

Jingyan Ma

Jian Wu

Peng Xiao

Ce Wang

Wei Wang

Jun Zhang

Yuan Yuan Li

Xin Fu

Hongwei Wang

Hai Ji

Zi Jian Ji

Bin Xue

Jinxi Su

Kevin Moyher

Xinmin Wang

Suling Zou

Yongli Zhang

Huijuan Ni

Xiaoyu Lei

Liqiang Xing

Jingyi Wang

Yanhui He

Raymond Allard

Paul Merola

Tai Qui

Jason Zhu

Yunchuan Zhu

The present application relates to the field of communications, and in particular to a hybrid beam forming architecture-based calibration compensation method and apparatus for improving the accuracy and effectiveness of calibration compensation. The method comprises: a base station determining a preset calibration weight vector matrix W and a preset first calibration signal matrix S, then transmitting N times consecutively calibration signals through analog transmission channels, calculating, according to the calibration weight vector matrix W, the first calibration signal matrix S and a first received data vector matrix Y, a transmission channel error matrix E, and then performing error compensation on the analog transmission channels based on E.

Hybrid beam forming architecture-based calibration compensation method and apparatus

Disclosed in the present application are a method and an apparatus for calibrating an antenna. In the method, in a receiving channel calibration process, first a receiving channel beam weight matrix is initially updated by using a receiving calibration signal from a reference beam direction, i.e., performing initial receiving channel calibration, and then, for different beam direction regions, beam weight vectors corresponding to multiple beam directions within particular beam direction regions are updated.

Method and apparatus for calibrating antenna

An array antenna calibration method and device, which is used for calibrating an array antenna in real time in an open calibration environment. The method includes: determining, on the basis of a preset direction angle of each preset beam direction, an initial beam weight vector matrix of an array antenna to be calibrated, and emitting, by a test antenna in a standard beam direction, a first calibration signal to the array antenna to be calibrated; determining, on the basis of the first calibration signal received by each channel of the array antenna to be calibrated, a magnitude-phase error between the first calibration signal received by a center channel and the first calibration signal received by each channel; and using the magnitude-phase error to calibrate the initial beam weight vector matrix, so as to obtain a compensation beam weight vector matrix.

Array antenna calibration method and device

Disclosed are a method and apparatus for detecting a beam, which are used for realizing accurate beam forming under a millimeter wave wireless communication system where antenna array calibration is carried out without using a calibration network in the millimeter wave wireless communication system. The method for detecting a beam provided in the present application comprises: determining a beam with a pre-set width; and using the beam with the pre-set width to scan a user equipment.

Method and apparatus for detecting beam

An example operation may include one or more of identifying partitions associated with a blockchain, identifying a new transaction to be committed to the blockchain, determining a partition code assigned to the new transaction, and committing the new transaction to one of the partitions associated with the partition code.

Partitioning of a blockchain ledger

Disclosed in the present invention are a data transmission method, an apparatus and an antenna array, in order to realize wide bandwidth data transmission of massive antenna array. The data transmission method comprises: baseband IQ data of multiple CA is grouped via IR data interface module to obtain baseband IQ data of each CA group; for baseband IQ data of each CA group: the baseband IQ data with enhanced data rate of the CA group is up-converted to digital intermediate frequency band by a digital up-conversion module; the digital intermediate frequency signals of the CA group are superposed by a combiner to form a multi-carrier digital intermediate frequency signal; in accordance with the amplitude and phase requirements of each antenna in a group of antenna sharing the multi-carrier digital intermediate frequency signal, the amplitude and phase of the multi-carrier digital intermediate frequency signal are respectively adjusted and transmitted to a digital to analog converter of a corresponding antenna channel; a multi-carrier analog intermediate frequency signal is generated by the digital to analog converter of each antenna channel, and then is transmitted to the corresponding antenna channel.

Data transmission method, apparatus and antenna array

The present application provides a method and device for detecting temperature of a radio remote unit, to solve the problem that an RRU could be damaged due to an excessively high temperature. The method includes: acquiring temperature data of a radio remote unit; configuring power data of the radio remote unit according to the temperature data, when the temperature data is less than a temperature threshold or within the temperature threshold; and closing radio frequency channel(s) of the radio remote unit when the temperature data is more than the temperature threshold.

Method and device for detecting temperature of radio remote unit

Disclosed is a DPD system. A DPD system provided in an embodiment of the present invention includes a table look-up unit and a DPD processing unit. First to Nth look-up-tables are used to combine two bit sequences of bit sequences obtained according to first to fourth address conversion tables so as to obtain first to Nth table look-up addresses. First to Nth DPD coefficients are found according to the first to Nth table look-up addresses, and one DPD coefficient is obtained via a DPD coefficient combination module, such that the DPD processing unit can perform DPD processing on a signal in first band according to the DPD coefficient. In the embodiment of the present invention, a look-up address is obtained according to four address conversion tables, a DPD coefficient is obtained from a look-up-table according to the look-up address, and then a final DPD coefficient is obtained to perform signal processing. Thereby, a look-up address generation solution is provided for a multi-band DPD system to realize multi-band DPD processing.

DPD system

Disclosed are a method and device for detecting a standing-wave ratio, which are used for realizing quick and accurate detection of the standing-wave ratio by only using a downlink service signal transmitted by a TD-LTE base station system, thereby preventing a special training sequence from causing additional interference to the base station system. The method comprises: capturing output power detection data (OPD) of a service signal transmitted by the base station system and reflection power detection data (RPD) of a device to be detected in a base station; within a first preset bandwidth range, respectively extracting feedback signals of the OPD and feedback signals of the RPD within a plurality of periods of time according to a preset data length; determining spectrum characteristics of the feedback signals of the OPD and spectrum characteristics of the feedback signals of the RPD respectively corresponding to each period of time, and determining the reflection coefficient of the base station system according to the spectrum characteristics of the feedback signals of the OPD and the spectrum characteristics of the feedback signals of the RPD respectively corresponding to each period of time; and determining the standing-wave ratio of the base station system within the first preset bandwidth range according to the reflection coefficient of the base station system.

Method and device for detecting standing-wave ratio

The present application relates to the field of digital pre-distortion processing. Disclosed in an embodiment of the present application are a pre-distortion parameter obtaining method and pre-distortion system for simplifying calculating complexity of a model while achieving good signal processing effect. The method comprises: after the beginning of periodic filtering processing, obtaining a pre-distorted signal after pre-distortion processing and a first feedback signal after power amplification (S); obtaining a second feedback signal by eliminating the rated linear gain of the first feedback signal (S); determining a pre-distortion parameter according to a matrix formed by the second feedback signal and a matrix formed by the pre-distorted signal (S); updating the pre-distortion parameter index table according to the determined pre-distortion parameter ().

Digital pre-distortion parameter obtaining method and pre-distortion system

A distributed spectrum analyzer and a method of spectrum analysis applying same. The spectrum analyzer adopts a separate design. A radio frequency receiver receives a signal, performs frequency conversion processing and AD conversion on the received signal, and sends the converted digital signal to a host. In such a structure, by a digital optical module, the radio frequency receiver is connected to a corresponding digital optical module on the host through an optical fiber, so as to implement a bidirectional data transmission. The host performs general control of the system as well as signal processing and spectrum analysis. Therefore, a multi-interface design is applied to the host of the spectrum analyzer, so as to support simultaneous access and control for a plurality of radio frequency receivers, thereby conveniently implementing multi-port measurement extension.

Distributed spectrum analyzer and method of spectrum analysis applying same

The disclosure discloses a method and device for performing peak clipping to multiple carrier waves, the method includes: according to carrier wave number of configured multiple carrier waves, signal bandwidth and occupied bandwidth of each carrier wave, obtaining total signal bandwidth and total occupied bandwidth of the corresponding carrier waves; according to the total signal bandwidth and the total occupied bandwidth of the multiple carrier waves, generating a digital filter with set order, and obtaining filter coefficient of the digital filter; taking the filter coefficient as a peak clipping coefficient and using the peak clipping coefficient to perform peak clipping to the peak-to-average ratio signals of the carrier waves. By the disclosure, the complexity of the generation of the peak clipping coefficient is simplified, the deterioration degree of EVM is reduced, and the distortion degree of signals is also reduced.

Method for performing peak clipping to multiple carrier waves and device thereof

The invention is a method and a system for updating pre-distortion coefficients, which is used to solve the problem of interference with neighbor cells due to the inferior pre-distortion coefficients. The method includes: presetting a primary table and a standby table, which store default and updated pre-distortion coefficients respectively; when a data source of a pre-distortion processor adopts the standby table, adopting the updated pre-distortion coefficients to perform parameter output processing to acquire pre-distortion parameters, and conveying the pre-distortion parameters and an input signal to the pre-distortion processor to process to acquire pre-distortion signals; conveying the pre-distortion signals through various signal processors to acquire a first signal, and determining the power data of the first signal; and based on the comparing result of the power data of the first signal and a setting range, there are different actions.

Method and system for updating predistortion coefficient

Disclosed are a method and a system for updating a multi-frequency band pre-distortion coefficient lookup table, in order to solve the problems that the calculation complexity is high. Wherein, the method comprises: collecting a first frequency band reference signal and a first frequency band feedback signal, a second frequency band reference signal and a second frequency band feedback signal; calculating a first frequency band pre-distortion coefficient and a second frequency band pre-distortion coefficient; performing phase calibration on the first frequency band pre-distortion coefficient and the second frequency band pre-distortion coefficient, respectively; and updating a first lookup table according to the first frequency band pre-distortion coefficient performed the phase calibration, and updating a second lookup table according to the second frequency band pre-distortion coefficient performed the phase calibration.

Method and system for updating multi-frequency-band pre-distortion coefficient lookup table

A method and an apparatus for repeating wireless signals bidirectionally and synchronously are provided in the present invention, specially used for repeating wireless signals emitted from the base station and terminal devices bidirectionally and synchronously in the TDD system. Said apparatus comprises: a receiving and transmitting antenna set, a frequency selection and bidirection RF amplication circuit, and a synchronization extraction and control device. Signals emitted from the base station and terminal devices are received and repeated by the receiving and transmitting antenna set. The synchronization control information is extracted from signals emitted from the base station by the synchronization extraction and control device to control the frequency selection and bidirection RF amplication circuit, thereby synchronously repeating signals received bidirectionally. By using the present invention, synchronously repeating signals received bidirectionally can be realized without delaying the time for receiving and transmitting signals, at the same time, a function of monitoring system malfunction can be also provided, thereby ensuring that the system works reliably.

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Beijing, China

Tao Duan