610 results about "Multi antenna" patented technology

The invention relates to a combined attitude determination technology, in particular to a high-precision combined attitude determination method based on a multi-antenna GNSS (Global Navigation Satellite System) and an INS (Inertial Navigation Satellite System), which comprises the following steps of: S1, fixing a GNSS receiver and the INS on a carrier; s2, calculating carrier position information and carrier speed information, and establishing a double-difference carrier phase observation model; s3, calculating a baseline vector predicted value between the antennas; s4, an LAMBDA algorithm model based on INS attitude information constraint is constructed; resolving the IC-LAMBDA algorithm model by using a least square method to obtain an optimal integer solution of the integer ambiguity; s5, calculating a baseline vector between the antennas; carrier attitude information is solved; and S6, fusing the GNSS navigation information and the INS navigation information by using an extended Kalman filter. The method solves the problems of low attitude measurement precision and poor scene adaptability of the existing integrated navigation technology, and is suitable for the fields of unmanned aerial vehicle control, unmanned vehicle driving, unmanned agricultural machinery seeding, marine navigation surveying and mapping and the like.

Systems and methods for the use of multiple-antenna-panel simultaneous physical uplink shared channel (PUSCH) transmissions are disclosed herein. A sounding reference signal (SRS) resource set indicator corresponding to a pair of SRS resource set may be provided by a network to a user equipment (UE), where the pair of SRS resource sets includes a first SRS resource set for a first PUSCH on a first antenna panel of the UE and a second SRS resource set for a second PUSCH on a second antenna panel of the UE. The UE may also receive, from the network, a pair of SRS resource indicators (SRIs). The UE may match each of the SRIs to one of the SRS resource sets based on the SRS resource set indicator. The multi-panel simultaneous PUSCHs are then transmitted on the antenna panels according to the matching of the SRS resource sets to the SRIs.

The present application relates to devices and components including apparatus, systems, and methods to perform a codebook-based SRS transmission. In an example, eight or more antenna ports are used for the codebook-based SRS transmission. In this example, a UE can be configured by a base station for the codebook-based SRS transmission, whereby the configuration indicates a particular comb configuration, symbol index configuration, and / or cyclic shift configuration to allow the use of the eight or more antenna ports.

Various aspects of the present disclosure relate to a communication device (e.g., a user equipment (UE)) that has a transceiver and a set of antenna panels. The communication device transmits a signal from the transceiver, where the signal is transmitted simultaneously as a maximum power reference signal from a best beam in each antenna panel of the set of antenna panels for a measurement of effective isotropic radiated power (EIRP) in a transmission direction. Additionally, the communication device receives a reference signal, and demodulates the reference signal independently for each antenna panel of the set of antenna panels for a measurement of effective isotropic sensitivity (EIS) in a reception direction.

The invention discloses a multi-antenna joint precoding Gbit wireless transmission system, which relates to the technical field of wireless communication and comprises a frequency spectrum channel acquisition module, a signal preprocessing module, a precoding joint optimization module, a transmission performance evaluation module and a closed-loop parameter control module. The spectrum channel acquisition module acquires signal data and evaluates a transmission bit error rate and a signal-to-noise ratio by using a spectrum analyzer; the signal preprocessing module performs denoising and normalization and constructs a channel model; the precoding joint optimization module dynamically adjusts precoding and suppresses bit error diffusion; the transmission performance evaluation module calculates a data rate and optimizes protocol design; and the closed-loop parameter control module dynamically configures system parameters to guarantee closed-loop optimization. According to the method, the transmission efficiency and the stability of a Gbit wireless transmission system are remarkably improved, a complex channel environment is effectively dealt with, the bit error rate is reduced, the data rate is improved, a transmission protocol is optimized, intelligent dynamic adjustment of system parameters is realized, and the optimal performance of a multi-antenna joint precoding technology is ensured to be exerted.

The invention provides a multi-antenna MIMO architecture synchronization method and device, a program product and a storage medium, and relates to the technical field of wireless communication. Receiving sampling signals through a plurality of receiving channels; performing down-sampling on each sampling signal to obtain a down-sampling signal; determining a plurality of cache regions to store each downsampling signal, and performing cross-correlation operation on each downsampling signal and a local synchronous time domain signal; when any receiving channel detects an effective peak value, determining the position of the effective peak value as a preliminary synchronization position; determining a corresponding search window range, and performing weighted stacking on the target cross-correlation results to obtain an overall correlation peak value; searching a maximum value in all the total correlation peak values, and determining a position corresponding to the maximum value as a final synchronization position; and calculating a frequency offset estimation value of each receiving channel according to each pilot signal, and carrying out weighted average on each frequency offset estimation value to obtain a final frequency offset estimation value. By adopting the method, the wireless frame synchronization precision can be improved.

The present invention discloses an unified multiple access (MA) based system for uplink transmission of data by multiple users. The system comprises an user interface integrated transmitter modules for transmitting the data from multiple user transmitters over waveforms through a cooperative unified data grid structure including grid points, said unified data grid structure including each user transmitter allocation of a few non-overlapping grid points for loading respective data bearing symbols, with zeros loaded onto unallocated grid points. The user transmitter is configured to transmit a sparsely loaded grid resembling to the unified two-dimensional data grid structure involving data-bearing Quadrature Amplitude Modulation (QAM), where a part of available grid points of the grid as allocated is loaded with QAM symbols and remaining grid points are loaded with zero symbols. A waveform modulator corresponding to user transmitter is also provided in the present system for waveform modulation of said sparsely loaded grid as per the waveforms enabling transmission for multi-antenna reception of the waveforms to a base station or an access point.

The invention relates to the technical field of communication, and discloses an anti-interference communication sensing integrated beam forming method and system. The method comprises the following steps: generating an integrated waveform based on an orthogonal signaling base and a random data symbol; the sensing ranging performance is evaluated through periodic and non-periodic autocorrelation functions, time-frequency resource allocation of the waveform is optimized based on the performance, and an optimized waveform is generated; obtaining channel state information, carrying out interference source identification, and calculating a beam forming weight according to an identification result; mapping the optimized waveform to a time-frequency resource lattice of a frame according to orthogonal frequency division multiplexing to generate a frame structure signal; inputting the frame structure signal into a multi-antenna array, and regulating and controlling the phase and amplitude of each antenna unit through a beam forming weight to form a directional beam with a main lobe aligned with a target and a null aligned with interference; the target and interference changes are monitored in real time, the beam forming weight and waveform time-frequency resource allocation are dynamically updated, the anti-interference capability is improved, and the communication perception integration performance is enhanced.

Various aspects of the present disclosure relate to a communication device (e.g., a user equipment (UE)) that transmits a first signal via a first antenna panel of a set of antenna panels to a first transmission-reception point (TRP) in a first transmission direction, and transmits a second signal via a second antenna panel to a second TRP in a second transmission direction. The communication device limits interference between the first antenna panel and the second antenna panel, where the interference by the first antenna panel is limited based on effective isotropic radiated power (EIRP) from the first antenna panel in the second transmission direction toward the second TRP, and the interference by the second antenna panel is limited based on the EIRP from the second antenna panel in the first transmission direction toward the first TRP.

The present invention relates to the technical field of wireless communications. Disclosed are a deep learning-based CSI compression feedback method and system for a multi-antenna MIMO system. The method comprises: acquiring raw CSI data, and preparing a neural network model training set; on the basis of the acquired data, constructing a U-Net neural network model integrated with a Transformer; training the neural network model offline to obtain a trained neural network model; and performing metric evaluation on the trained neural network model. The present invention improves the CSI compression efficiency and reconstruction accuracy of the multi-antenna MIMO system, accelerates data processing and feedback speed, enhances model adaptability, and achieves accurate restoration of compressed data. In addition, the multi-scale convolution and skip connection design of the network preserves more details, thereby improving reconstruction quality. An optimized network structure not only reduces the amount of calculation, but also improves processing speed, so that the model can adapt to various channel environments and communication scenarios.

The invention provides a communication auxiliary sensing system and method based on an intelligent super surface (RIS). The communication auxiliary sensing system comprises a multi-antenna base station, a multi-user terminal and an active RIS. According to the system, an uplink pilot frequency and a data signal are jointly utilized, an expectation maximization (EM) algorithm is adopted to iteratively recover equivalent channel state information (CSI), and a Cramer-Rao bound (CRB) of sensing performance is deduced. Combined optimization of user precoding and RIS reflection coefficients is innovatively proposed under the uncertainty of CSI, so as to minimize CRB and guarantee user communication rate at the same time. An original problem is converted into a processable form by establishing a traversal MIMO spectrum efficiency compact lower bound, and efficient optimization is realized by combining a WMMSE method with a block coordinate descent (BCD) frame. According to the scheme, the sensing precision and the spectrum efficiency are remarkably improved, the method is suitable for an active RIS-assisted MU-MIMO network, and the technology can also be expanded to a traditional RIS-free system.

The invention belongs to the technical field of communication interference cancellation, and discloses an electromagnetic interference real-time monitoring and cancellation method based on a multi-antenna technology, which can realize comprehensive perception of an electromagnetic environment from a spatial dimension by utilizing the multi-antenna technology and through cooperative work of a main antenna and an auxiliary antenna. And an accurate basis is provided for timely coping with electromagnetic interference. Besides, an interference identification model is further constructed and is suitable for monitoring various different types of electromagnetic interferences, interference cancellation parameters and strategies are dynamically adjusted according to the interference types, high adaptability and flexibility are achieved, a cancellation algorithm is matched for the interference types, signals with the same amplitude and opposite phases as interference signals are generated, and the interference cancellation accuracy is improved. Therefore, the interference is quickly and effectively counteracted, and the normal operation of a satellite navigation communication system is ensured. In addition, according to the method disclosed by the invention, the anti-interference capability of the satellite navigation communication system in a complex electromagnetic environment can be remarkably enhanced, and the anti-interference tolerance is greatly improved.

The invention relates to the technical field of wearable device mutual-seeking positioning, in particular to a wearable device mutual-seeking positioning method and system based on an entry and exit principle, and the method comprises the steps: setting a base station, obtaining angle and distance information through a multi-antenna array, and carrying out the time slot positioning; constructing a shielding model by utilizing the equipment attitude information, and identifying a sight distance communication and signal shielding blind area; the Kalman filtering noise weight is adjusted by adopting a dynamic sector confidence gating strategy, a relative pose vector is solved in combination with geometric constraints, and a guide instruction is generated; in the near-field verification stage, a coding vibration sequence is transmitted, time domain wave packet cross correlation is calculated to confirm physical contact, and automatic search quitting is achieved. According to the invention, through a shielding model and a dynamic gating strategy, positioning drift caused by shielding is effectively inhibited, and the guiding robustness in a complex environment is improved; by means of coding vibration and a cross-correlation verification mechanism, misjudgment and real contact of the partition wall are accurately distinguished, and intelligent closed loop of guiding while entering and returning while contacting is achieved.

The present invention discloses a tag positioning method based on RFID technology, which mainly eliminates the positioning position interference problem caused by a single tag being read by multiple antennas. The method adopts the steps of designing a three-dimensional spatial model of the positioning area and combining it with a positioning algorithm for judgment. The interference values ​​are eliminated in sequence by using the advantages and disadvantages of the antenna spatial points, an RSSI ranking table combined with a tag data information table, and the weighted total score of the three major influencing factors of the tag data information. The method realizes the precise positioning of multiple tags in the application scenario, further reduces the misjudgment results, and improves the positioning accuracy of the tags.

A method of wireless communication includes determining a first precoding matrix indicator (PMI) value and a second PMI value, the first PMI value indicating a first matrix W1 of a first codebook C1, the second PMI value indicating a second matrix W2 of a second codebook C2, wherein the first matrix W1 and the second matrix W2 together define a precoding matrix W for multi-antenna transmission. The method also includes transmitting the first PMI value at a first periodicity, and transmitting the second PMI value at a second periodicity shorter than the first periodicity. In some examples, the method also includes transmitting a rank indicator (RI) value, where the first PMI value and the second PMI value are determined based on the RI value.

The invention provides a multi-antenna switching system and a control method. The system comprises a radio frequency interface module, a single-pole double-throw switch module, a single-pole three-throw switch module, a coupler, a band-pass filter, a power amplification module, a power detection module and a control module. The method comprises the following steps: controlling a current working antenna, and collecting a real-time performance data set of each group of antennas; evaluating and comparing all the antenna groups, and screening out a target antenna group; and judging whether the current working antenna and the target antenna group are the same group or not to perform antenna switching to obtain a new antenna group, and continuously monitoring the performance change of the new antenna group. According to the invention, the automatic selection and adaptive switching of the optimal antenna of the communication equipment under the multi-antenna condition are realized, the signal quality and stability are greatly improved, manual intervention is avoided, the self-healing and adaptive capabilities of the equipment are improved, the dynamic complex change of a network environment is supported, and the method can be widely applied to scenes such as 5G, Internet of Things, wireless communication and mobile terminals.

The invention discloses an active isolation and ECC calculation method for a multi-antenna system. The method comprises the steps that multiple ports of the active multi-antenna system are excited at the same time; obtaining an S parameter and an excitation wave of each port; calculating active isolation based on the S parameter and the excitation wave, and calculating an envelope correlation coefficient ECC according to the S parameter of the antenna; the method has the advantages that antenna performance evaluation can be conveniently carried out under the condition that multiple ports of the multi-antenna system are excited at the same time, and therefore the optimization design of the antenna system is guided.

The invention discloses a millimeter wave communication transmission signal interference suppression method, and relates to the technical field of millimeter wave communication signal interference suppression, and the method comprises the steps: deploying a multi-antenna array and an ultra wide band detection module, collecting interference and useful signal features, and generating a data set; evaluating an interference level in combination with channel parameters, and establishing a mapping relation between interference and a channel; interference types are accurately classified through a deep learning model; differential suppression schemes are adopted for different interferences; dynamically adjusting suppression parameters; monitoring a suppression effect and feeding back optimization; and the adaptive capacity of complex scenes is improved based on historical data self-learning. According to the invention, accurate identification and differential suppression of interference are realized, and the anti-interference capability and the transmission stability are significantly improved; the interference and channel change are dynamically adapted, the self-learning ability enhances the adaptation to novel interference, and an efficient interference suppression solution is provided for millimeter wave communication.

Existing approaches for channel estimation in Reconfigurable Intelligent Surface (RIS) assisted communication systems have the disadvantage that they require separate estimation of Angle of Arrival (AoA) and Angle of Departure (AoD), requiring additional step of computationally demanding data association. Embodiments disclosed herein provide a method and system for channel estimation in RIS assisted communication systems. In this approach, the system jointly visualizes the plurality of RIS elements and the plurality of multi-antenna receiver array elements as a RIS-SIMO virtual array, thereby eliminating need to separately estimate the AoA and AoD.

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an apparatus may include first transceiver hardware comprising: first processing logic configured to generate a first plurality of output streams associated with a first sub-array of antenna elements of an antenna array by applying a first inverse power-amplifier- to-antenna-array network (A-l) matrix to one or more first input streams; and a first plurality of digital predistortion (DPD) circuits that are apply first DPD to the first plurality of output streams. The apparatus may include second transceiver hardware comprising: second processing logic configured to generate a second plurality of output streams associated with a second sub-array of antenna elements of the antenna array by applying a second A-l matrix to second one or more input streams, and a second plurality of DPD circuits configured to apply second DPD to the second plurality of output streams.

The invention discloses an accurate directional diagram null control robust airspace anti-interference method, which considers a multi-antenna receiver communication scene with interference signals in different incoming wave directions, and improves the output signal to interference plus noise ratio of a receiving end by controlling a receiving array directional diagram to form accurate null in the direction of an interference angle of arrival. Therefore, robust airspace anti-interference is realized. In order to control the nulling direction of a directional diagram, the nulling control problem of the directional diagram is converted, and then a filtering weight vector form capable of accurately controlling nulling of the directional diagram is obtained by using an orthogonal projection theory. And then establishing an optimization problem to maximize the output signal to interference plus noise ratio on the premise of controlling the null of the directional diagram. And finally, solving the optimization problem to obtain an optimal filtering weight vector capable of controlling the directional diagram to form accurate null at the angle of arrival of the interference signal. The model is complete, the design method is reasonable and effective, and directional diagram nulling can be effectively controlled in a communication scene in which a receiver faces interference in multiple directions so as to effectively suppress interference.

Mechanism on reporting procedure information for simultaneous multi-panel uplink (UL) transmission is provided. According to embodiments of the present disclosure, a first device transmits first capability information to a second device. The first capability information comprises a list of UE capability value sets. Each UE capability value set in the list defines an antenna arrangement of the first device and is characterized by a first number of transmission antenna ports. The first device transmits second capability information to the second device. The second capability information comprises a group of UE capability value sets, wherein the group of UE capability value sets defines a plurality of antenna arrangements of the first device, and coherence information in phase domain between transmission antenna ports of the plurality of antenna arrangements or between the plurality of antenna arrangements. In this way, it enables simultaneous multi-antenna panel codebook based UL transmission with different antenna panels having difference capabilities.

The present invention provides a method for low-complex estimation of Direction of Arrival (DoA) and Time of Arrival (ToA) in multi-antenna-based communication comprising detecting overlapped paths between a Mobile Station (MS) and a Base Station (BS) operating under said multi-antenna-based communication with scatters present therein involving channel paths represented as Channel Impulse Response (CIR) defined with channel signatures including delay and angle steering vectors, decoupling the channel paths in delay and angle-domain and separately estimate the DoA and ToA of each path with a low computational complexity which is based on one-dimensional low-index based rotation methodology and finally pairing the DoA and the ToA.

There is provided method performed by a user equipment (UE) configured with 8 or more transmit antenna ports (NTX). The method comprises: receiving a precoding indication which indicates a precoder in a subset of precoders, where the subset of precoders corresponds to a plurality of precoders associated with NTX / Ng transmit antenna ports, where Ng is a number of transmit antenna port groups; and transmitting a data transmission using the indicated precoder to a network node. A UE to perform this method is also provided.

The invention relates to the technical field of radio frequency identification, in particular to a UHF-RFID (Ultra High Frequency-Radio Frequency Identification)-based access door warehouse-in and warehouse-out identification method and identification system. The method comprises the following steps: acquiring activated and scattered signal data of an RFID tag array on goods in a recognition and reading area, acquiring position information and signal change characteristics of each tag in the RFID tag array, and establishing a multi-characteristic data model of the RFID tag array in combination with path information of the goods in the recognition and reading area; and calculating to obtain high-dimensional multi-source data features of the RFID tag array in the multi-antenna space, inputting the high-dimensional multi-source data features into a pre-trained tag classification model to identify a target tag, obtaining space-time dynamic feature vectors of the target tag passing through different antenna reading areas, and inputting the space-time dynamic feature vectors into a pre-trained warehouse-in and warehouse-out classification model to identify warehouse-in and warehouse-out states of goods in the reading areas. According to the invention, the target goods in the access door can be accurately identified, the warehouse-in and warehouse-out state of the target label on the target goods can be reliably judged, and the warehouse-in and warehouse-out process can be monitored and managed in real time.

The invention relates to a broadcast emission signal optimization method based on multi-antenna cooperation, and the method comprises the steps: constructing a multi-antenna cooperation broadcast emission system which comprises a central control unit, a distributed antenna array, an environment perception module and a terminal feedback module; real-time channel state information (CSI) is collected through the environment sensing module, and a dynamic propagation environment map is constructed; and optimizing a radiation pattern of the antenna array by adopting a three-dimensional beam forming algorithm based on the propagation environment map. According to the multi-antenna cooperative broadcast emission signal optimization method, a cooperative architecture of the central control unit, the distributed antenna array, the environment sensing module and the terminal feedback module is adopted, dynamic beam forming and power optimization are achieved, the coverage uniformity of broadcast signals is remarkably improved, and blind areas and overlapped interference areas are reduced; the energy utilization efficiency is improved, the energy waste caused by ineffective radiation is reduced, the self-adaptive capability of the system is enhanced, and the channel environment change can be responded in real time.

The invention discloses a radar sensing method and system based on near-field beam splitting. The method comprises the following steps: determining a target distance based on a radar transmitting signal and an echo signal; determining a preliminary target angle according to the phase difference of the multi-antenna receiving signals; then, a near-field codebook is constructed based on the initial target angle, and beam splitting caused by frequency deviation is compensated by adjusting delay parameters; and meanwhile, a beam focusing vector is controlled to be generated, a pilot signal is transmitted, a feedback signal is received, and an optimal angle is determined through energy maximization search according to the feedback signal. According to the method, the number of detection beams is reduced by adopting the near-field beam splitting effect, the cost is reduced, meanwhile, beam training is performed after radar sensing, the pilot frequency overhead can be effectively reduced, and the communication rate can be effectively improved.

The invention discloses a bow net offline electromagnetic interference multichannel data acquisition and analysis method and device, and belongs to the technical field of electromagnetic interference test and analysis. A transient electromagnetic signal of pantograph-catenary discharge is acquired through cooperation of multiple antennas, multiple probes and multiple channels, and strict alignment of multi-source data under the same discharge event is realized through unified triggering and time base line unification; in the off-line stage, denoising, feature extraction and multi-event statistical modeling are carried out on data generated by triggering, so that multi-path and multi-mode electromagnetic characteristics of pantograph-catenary discharge and statistical laws of the multi-path and multi-mode electromagnetic characteristics of pantograph-catenary discharge are obtained; the device comprises a data acquisition unit, a synchronous trigger unit, an analysis processing unit and an interactive display unit, and can improve data processing efficiency and analysis depth while ensuring high sampling rate and broadband coverage; the device solves the problems of insufficient space coverage, poor synchronism and limited analysis capability in the existing pantograph-catenary discharge test, and is suitable for pantograph-catenary discharge mechanism research, electromagnetic interference evaluation and related engineering application.

The invention discloses a DRL-based power distribution method in a VR overlapped XL-MIMO system, belonging to the technical field of wireless communication multi-antenna transmission, comprising: in an XL-MIMO multi-user downlink scene communication system, collecting position information of users and VR information in an environment, and using a rectangular area to represent the positions of the users; based on the position information and the VR information, generating a corresponding user channel matrix, and constructing a corresponding user precoding matrix; defining a state space, an action space, a reward value and a priority experience playback mechanism of the Markov decision process; establishing a strategy network and a value network for updating a strategy function and a value function; and selecting an optimal strategy network to generate an optimal power distribution strategy according to the maximum reward value obtained by feedback through continuous iterative updating. According to the method provided by the invention, the problem of high complexity of a power distribution algorithm in an existing real scene is solved by utilizing the VR characteristics of the user, and the transmission performance of the system is effectively improved.