242 results about "Interference reduction" patented technology

Aspects of the subject disclosure may include, for example, identifying one or more radiating elements of an antenna system that are to be adjusted based on interference determined to affect an operation of the antenna system, and altering one or more properties of the one or more radiating elements to effect polarization adjusting such that an impact of the interference on the antenna system is minimized. Other embodiments are disclosed.

The invention discloses a resource allocation method for LTE (Long Term Evolution) wireless communication, relates to the technical field of wireless communication, and is used for solving the problem that wireless communication resource allocation is not clear. According to the method, the future position of the user is predicted by acquiring the historical position and speed data of the user and combining with the time step length, the channel quality is predicted through the path loss and interference model, the target cell is identified, data is provided for resource allocation, and the resource occupation state of the target cell is evaluated. The resource reservation proportion is dynamically adjusted in combination with user service requirements and channel quality, the communication quality and service continuity of high-speed users in the switching process are guaranteed, then, a shared resource pool is constructed, and low-interference resource blocks are preferentially allocated to high-priority users through an interference coordination strategy in combination with an interference thermodynamic diagram generated in real time, so that the high-priority users are subjected to resource allocation. The interference influence is reduced, the priority and the resource allocation strategy are dynamically adjusted, user migration is triggered in combination with the load balancing index, and global optimization of resource allocation and improvement of network performance are achieved.

The invention discloses a phased array computing terminal real-time beam forming and interference reduction method, which comprises the following steps of: 1, acquiring an observation signal by an observation target, calculating an independent narrow-band beam former for each sub-band channel for a channelized frequency domain baseband signal, and further realizing frequency domain real-time beam forming on all baseband signals at the same time, based on the dynamic change of the propagation environment, the beam forming weight is updated, the beam shape and direction are adjusted, and the maximum signal-to-noise ratio beam forming is realized; and 2, effective interference reduction is realized by adopting spatial filtering in phased array calculation terminal equipment, a spatial filter is constructed in combination with a subspace projection method, identification and elimination of interference signals are realized through calculation and characteristic decomposition of a covariance matrix, and finally filtered signal data are obtained. According to the method, a large number of independent tasks in matrix operation can be efficiently processed, so that the calculation time is remarkably shortened, and the observation capability of a system and the adaptability of an application scene are improved.

The invention provides a beam weight optimization method and device based on a low-altitude scene, electronic equipment and a storage medium. The method comprises the following steps: acquiring measurement report MR data reported by a flight terminal in the low-altitude scene according to a set flight route period; performing coverage simulation on all weights in a preset cell beam weight library to obtain simulation data corresponding to different beam weights in the low-altitude scene; based on the simulation data and the MR data, optimizing a wave beam weight of a network side to obtain an optimized wave beam weight; and dynamically adjusting the beam weight of the base station antenna based on the optimized beam weight. In a low-altitude scene, by simulating the preset beam weight, aiming at low-altitude environment complex interference, the interference source is effectively identified and avoided, the beam weight is optimized, and the influence of the interference on the signal quality is reduced, so that the signal strength is enhanced, the stable connection between the flight terminal and the base station is ensured, the signal quality is improved, and the user experience is improved. And high efficiency and accuracy of data transmission are ensured.

The invention discloses a multi-band spectrum resource allocation method based on A2-MADDPG, and belongs to the technical field of MAB attention mechanisms. According to the technical scheme, a communication system framework is constructed, and a multi-band resource allocation environment is defined; modeling is carried out for frequency band characteristics, and cooperative work is realized; extracting multi-scale features of a system state by adopting self-adaptive multi-scale convolution and a dynamic attention mechanism; the hyper-parameters are optimized through an evolutionary strategy, and optimal resource allocation is achieved; a dynamic reward mechanism is established, weights are adjusted in real time according to actions and environments, and short-term and long-term targets are considered. The beneficial effects are that the method combines multi-agent deep reinforcement learning, adaptive multi-scale convolution, an attention mechanism and an evolutionary strategy to construct a multi-band collaborative resource allocation scheme, and can reduce inter-band loss to improve the spectrum utilization rate; the self-adaptive scale convolution and the dynamic attention mechanism are fused, the self-adaptive capability of the algorithm is improved, the system can keep high performance under different network environments and demand changes, interference is remarkably reduced, and the spectrum utilization rate is improved.

The invention discloses a PVC film coating uniformity detection method based on spectral analysis, and relates to the technical field of optical detection, and the method comprises the following steps: S001, adopting a controllable incident illumination system with a multi-angle rotation function to carry out continuous angle scanning on the surface of a PVC film, collecting reflection spectrum intensity data in a corresponding wave band range according to different incident angles, and generating a spectrum data matrix containing interference characteristics; and S002, carrying out continuous wavelet transform processing on the spectral data matrix, carrying out multi-scale local decomposition on a spectral response signal, extracting and separating a periodic interference characteristic signal, and obtaining a purified spectral matrix after interference reduction. According to the method, through multi-angle spectrum collection and interference feature stripping, accurate identification of a coating thickness abnormal area and combination of strength indexes, spraying parameters are regulated and controlled, a detection-compensation-reinspection closed-loop mechanism is constructed, interference misjudgment is effectively avoided, and the accuracy and regulation and control efficiency of uniformity detection of the PVC film coating are improved.

The invention discloses an underground data wireless transmission system based on the Internet of Things technology, and relates to the technical field of wireless signal transmission control, and the system carries out the comprehensive monitoring and analysis of different channel performance data of LoRa, Wi-Fi, 5G, Bluetooth and NB-IoT through a channel monitoring module, and facilitates the switching to a qualified channel. In combination with a laser radar technology, an underground environment is scanned, a three-dimensional model is established, underground obstacles and influences of moisture content changes of the underground obstacles on signal propagation are identified, and targeted optimization strategies such as adjustment of signal transmitting power and antenna angles are generated so as to deal with the problems of environment changes and signal attenuation. Further, through underground multipath effect analysis, after a second early warning instruction is received, the system can identify a reflecting surface and a refracting surface in signal propagation in real time, analyze the influence of the multipath effect on the signal and generate an optimization scheme, such as measures of arranging relay equipment, adjusting antenna beams and the like, so that interference is remarkably reduced, and the transmission quality of wireless signals is improved.

The invention discloses an RGB-T salient target detection method based on asymmetric illumination perception progressive decoding. The method comprises the following steps: acquiring an RGB-T salient target detection data set, and inputting the RGB-T salient target detection data set into a trained RGB-T salient target detection network; the method comprises the following steps of: acquiring a multi-level feature by adopting two Swin Transform backbone networks; effective interaction of RGB features and T features is realized in an asymmetric mode by using an asymmetric illumination perception interaction module, and interference information is reduced; through a channel spatial feature fusion module, cross-modal feature fusion is realized in two dimensions of a channel and a space. Decoding the fused features by adopting a staged progressive decoding strategy, and outputting a final saliency map; according to the method, a cross-modal feature interaction and fusion method and a multi-scale information aggregation strategy are explored, and the precision of RGB-T salient target detection is improved.

This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for interference reduction techniques between passive wireless devices. In some aspects, a source device, a reader device, or a passive wireless device may support one or more interference avoidance mechanisms according to which the reader device may experience less interference from other devices within a system or may more accurately decode messaging that is meant for the reader device from the radio frequency signaling received at an antenna of the reader device, or both. In some implementations, multiple passive wireless devices may each add or apply a respective communications signature to a reflected or backscattered signal from that passive wireless device. The respective communications signatures may uniquely identify backscattered signaling from a specific passive wireless device such that a reader device may parse through received signaling and extract and decode a relevant message.

The invention relates to the technical field of live broadcast management, in particular to a digital intelligent live broadcast bullet screen supervision method and system. The method comprises the following steps: acquiring live broadcast bullet screen data and real-time live broadcast data; analyzing the live broadcast bullet screen data, and determining an abnormal bullet screen and an abnormal level of the abnormal bullet screen; performing risk assessment on the abnormal bullet screen in combination with the real-time live broadcast data, and determining a dynamic shielding judgment threshold value of the abnormal bullet screen; and comparing the abnormal level with the dynamic shielding judgment threshold, and determining a display strategy of the abnormal bullet screen according to a level comparison result. And in combination with the real-time live broadcast data, risk assessment is performed on the abnormal bullet screen, the dynamic shielding judgment threshold of the abnormal bullet screen is determined, and the high-risk scene recognition accuracy is improved. And comparing the abnormal level with a dynamic shielding judgment threshold, and determining a display strategy of the abnormal bullet screen according to a level comparison result, thereby reducing interference, retaining free expression of the user, reducing the complaint rate of the user, and inhibiting malicious screen refreshing diffusion.

A radar system includes a first transmitter channel and a first receiver channel. In a first mode of operation the radar system determines a first channel response. In a second mode of operation, the radar system modifies a received signal based on the first channel response.

The present disclosure provides an interference mitigation cartridge for cardiac vibrational waves. The reduction box comprises an upper end face, side faces, a bottom face and a box body inner cavity defined by the upper end face, the side faces and the bottom face. The impedance wave-absorbing layer on the upper end surface comprises a carbon fiber epoxy layer, a silica gel carbon powder layer and a porous silicone rubber layer of which the impedance values are gradually reduced from large to small, and a through hole is formed in the center of the impedance wave-absorbing layer; the through hole penetrates through the upper lining layer to form an upper inner layer facing the inner cavity of the box body; the damping resonant cavity is formed after a gap between the lower surface of the porous silicon rubber layer and the upper surface of the upper lining layer is sealed at the side edge; the input vibration acquisition plate is embedded into a groove which is sunken downwards from the upper surface of the impedance wave-absorbing layer and is used for receiving and conducting input vibration containing heart vibration waves and environmental interference waves; and the vibration wave sensor is connected with the lower surface of the input vibration acquisition plate through a magnetic connecting piece, is arranged in the inner cavity of the box body and is used for receiving heart vibration waves.

The invention discloses a time-frequency cooperative multi-sub-pulse adaptive matched filtering main lobe intermittent sampling interference resisting method, which comprises the following steps of: modeling a radar multi-sub-pulse transmitting signal to obtain an echo signal, modeling a radar system total receiving signal, filtering an interference signal, recovering a target signal, and obtaining a pulse pressure result. According to the method, multi-channel pulse compression is completed, then distance gate alignment is carried out, finally, distance and speed information of a real target is further highlighted through intra-sub-pulse coherent accumulation and inter-sub-pulse coherent accumulation, and intermittent sampling interference is effectively suppressed. According to the method, a multi-sub-pulse structure is utilized, the interception length of a single sub-pulse by a jammer can be reduced, so that the interference degree of the single sub-pulse is reduced, and the intermittent sampling interference can be effectively suppressed under the condition that interference prior information does not need to be known.

A wireless communication network performs multi-static radar operations, including operating multiple access points as geographically-diverse radar transmitters that transmit illumination signals, for illumination of a target region, and an example User Equipment (UE) operates as a radar receiver with respect to the multi-static radar transmission. The network may perform multi-static radar operations on demand, for power savings and interference reduction, and UEs may indicate particular radar-sensing needs or capabilities when requesting multi-static radar operation, for consideration by the network when configuring the corresponding illumination-signal transmissions.

Systems and methods for reducing interference between content play and video recording among multiple devices located proximate to each other. Microphones of devices recording video are muted, or content play is interrupted, according to the actions of a majority of nearby devices. For example, if most devices are recording video, content play may be interrupted to prevent the video from unintentionally recording unwanted sounds from play of the content. Conversely, if most devices are not recording video, only those devices which are may have their microphones muted. Actions to reduce interference may be taken according to the current behavior of a majority of proximate devices.

A radar system operates in two modes: a calibration mode and a sensing mode. In the calibration mode, the radar system sends a set of test signals via a set of transmitters and receives responsive signals at a corresponding set of receivers. Based on the received signals, the radar system estimates the channel responses. In a sensing mode of operation, the radar system transmits a signal, receives a responsive set of signals at the receivers, and detects characteristics of nearby objects based on the received signals. In the sensing mode, the radar system employs the estimated channel responses to precode the signals for transmission and thereby reduces the components of the received signals that are due to self-interference.

The invention discloses an anti-interference strong-robustness high-precision differential positioning method which is applied to real-time dynamic differential positioning of a Beidou No.3 receiver in a complex electromagnetic environment. Comprising the following steps: step 1, performing gross error combined processing: a, forming an LI combined observation value and an MW combined observation value by using double-difference phase observation values and double-difference pseudo-range observation values on B1 and B3 respectively; according to the method, a staged combined processing strategy is innovatively adopted, in the preprocessing stage, large gross errors are accurately eliminated through a median method (with the formula: XiM formula > k * MAD as the criterion, k = 5), and interference can be reduced from the source; in the parameter calculation stage, robust estimation iteration is only carried out on the residual small gross error, limitation of a single standard is avoided, the calculation amount is greatly reduced, balance of gross error processing effectiveness and real-time performance is achieved, and support is provided for efficient operation of an embedded processor.

The invention relates to the technical field of concentration detection, in particular to a separation gel concentration real-time detection method and system.The method comprises the following steps that on the basis of input parameters of detection signals, multi-dimensional characteristic values of concentration detection signals are extracted, normalization processing is carried out on signal values in combination with gel matrix characteristics, and the concentration of the separation gel is obtained; after interference values are removed, linear variation and fitting degree calculation are carried out on the feature combination, and a concentration feature representation value is generated. According to the method, the weight is adjusted by combining abnormal deviation value extraction with a sparsity constraint rule, redundant features are optimized, and the influence of interference factors on a result is remarkably reduced. Through combination of nonlinear concentration interval weight distribution and dynamic weighting operation, concentration distribution fitting precision and adaptability in a complex environment are improved. By re-screening decoding parameters and iterative calculation, the accuracy and stability of a concentration distribution decoding result are ensured, a macroscopic trend value and a microcosmic difference value are integrated through multi-scale calculation, and the dynamic adaptability and data analysis depth of concentration prediction are remarkably improved.

The proposed dielectric beamformer may be used to provide beam-forming of a transmitted radio-frequency (RF) signal. The dielectric beamformer includes a dielectric lens that provides a means of quickly steering a peak beam of the RF signal in a specific direction, allowing tracking of a distant signal, or multiple distant signals. Moreover, the beam of the RF signal can be steered to place a null in a chose direction to reduce interference. The dielectric beamformer includes a dielectric lens, which includes a first layer including a plurality of photo-voltaic (P-V) cells and a second layer including a plurality of piezoelectric cells, and one or more light sources arranged to emit light beams towards the P-V cells of the first layer. The piezoelectric cells are electrically connected to the P-V cells to receive the electricity produced in the P-V cells.

The invention discloses a key self-learning method and system and driving equipment, and relates to the technical field of electronic equipment control. The method comprises the following steps: sending a key self-learning instruction; controlling the key to be self-learned to send out a first high-frequency signal carrying a preset identifier; high-frequency signals are collected according to a preset sampling period; analyzing the collected high-frequency signal and detecting whether the high-frequency signal carries a preset identifier; if yes, the detected high-frequency signal is marked as a second high-frequency signal, a first key ID carried by the second high-frequency signal is recognized, and a first low-frequency signal is sent out; controlling the key to be self-learned to receive the first low-frequency signal and send out a third high-frequency signal; and receiving the third high-frequency signal and judging whether the third high-frequency signal is matched with the second high-frequency signal, and if so, storing the first key ID. By means of the method, the high-frequency signal sent by the key to be learned can be effectively distinguished from other high-frequency interference signals, interference is reduced, and it is ensured that the key self-learning process is smoothly carried out.

A sensor multifunctional Bluetooth food probe is provided; a first sensor is provided at a front end of a probe body tube and configured to measure food temperature; the first sensor is connected to a PCB board and a main control circuit through first and second wires, the probe body tube is provided with a first charging electrode; a second sensor is provided at one end of a handle and configured to measure an environmental temperature; the second sensor is connected to the PCB board and main control circuit through third and fourth wires; the handle serves as an antenna or a second charging electrode; a switching circuit is configured to switch the third and fourth wires to a charging module or a temperature measurement module. In this application, the antenna is externally mounted and has fewer internal wires to reduce interference signals.

The invention provides a potential collision detection and optimization method for processing path trajectory simulation, which generates a virtual boundary through an ultrasonic dynamic sound field, and adjusts the shape of the boundary in real time to adapt to workpiece and environment changes. And a multi-path signal fusion and adaptive filtering technology is adopted, so that the detection precision is improved, and interference is reduced. Early warning and safety protection are realized through double-layer virtual boundary design; and the path is dynamically optimized by combining heuristic search and a fast path planning algorithm, and the collision avoidance requirement and the processing efficiency are balanced. Deep learning and reinforcement learning models are introduced, and self-adaptive optimization is performed on boundaries and paths based on historical data and real-time feedback. The method is suitable for multi-axis linkage machining and complex curved surface machining, and has high precision, strong anti-interference capability and wide applicability.

A first wanted signal beam is formed at a multi-element antenna array to receive a first wanted signal having a first and second sub-carrier, each having known transmitted modulation, and the subcarriers are combined using a first linear relationship determined to reduce a component of the wanted signal. A first orthogonal beam is formed that is orthogonal to the first wanted signal beam, and a first subcarrier received in the first orthogonal beam corresponding in frequency to the first subcarrier of the first wanted signal is combined, using the first linear relationship, with a second subcarrier received in the first orthogonal beam corresponding in frequency to the second subcarrier of the first wanted signal. The linear combinations are processed to generate weights, which are applied to interference received in the first orthogonal beam to produce weighted interference which is combined with the received first wanted signal to reduce interference.

An antenna system is described. A main antenna can be used to receive a first signal, a first auxiliary antenna can be used to receive a second signal from a first intended interference direction. An adjustment unit receives the second signal and is used to adjust the second signal. A combiner unit receives the first signal and the adjusted second signal and is used to combine the adjusted second signal with the first signal to reduce any impact of the second signal on the first signal.

Method for providing reduced interference for at least two co-located FMCW (Frequency Modulated Continuous Wave) Doppler radars, each of said radars being used in a system to detect respective distances to and velocities of objects moving through space, can include a propagation determination step, in which expected electromagnetic wave propagation times are determined between pairs of radars; a sweep time offset synchronizing step, in which different respective sweep time offsets are selected, with respect to each radar in a first group of radars; and a sweep frequency offset synchronizing step, in which a second sweep frequency offset is selected with respect to a second group of radars, the second sweep frequency offset being relative to a sweep frequency pattern used for radars belonging to said first group. The invention also relates to a system and to a computer software product.

The proposed dielectric beamformer may be used to provide beam-forming of a transmitted radio-frequency (RF) signal. The dielectric beamformer includes a dielectric lens that provides a means of quickly steering a peak beam of the RF signal in a specific direction, allowing tracking of a distant signal, or multiple distant signals. Moreover, the beam of the RF signal can be steered to place a null in a chose direction to reduce interference. The dielectric beamformer includes a dielectric lens, which includes a first layer including a plurality of photo-voltaic (P-V) cells and a second layer including a plurality of piezoelectric cells, and one or more light sources arranged to emit light beams towards the P-V cells of the first layer. The piezoelectric cells are electrically connected to the P-V cells to receive the electricity produced in the P-V cells.

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit assistance information indicating a type of in-device coexistence (IDC) interference at the UE, and indicating a set of associated interference parameters that correspond to an interference pattern of the IDC interference in a time domain, a frequency domain, or both. The set of interference parameters and the interference pattern may describe a pattern of the IDC interference in the time domain, the frequency domain, or both. The UE may receive a message indicating one or more operating parameters associated with a time period that is based on the interference pattern. The operating parameters may be based on the type of IDC, the set of interference parameters, and the interference pattern, and may enable the UE to communicate with a network entity to maintain signaling throughput while decreasing effects of the IDC interference.

The invention discloses a human eye fixation point prediction method based on a deep convolutional network and frequency domain feature enhancement, and the method comprises the steps: employing the deep convolutional network (namely a residual network ResNet) as a backbone network to form an encoder branch, and employing five layers of coding blocks to extract the spatial features of five layers of an input image; the five layers of spatial features extracted by the encoder are respectively sent to a frequency domain feature enhancement module for frequency domain feature enhancement based on discrete cosine transform (DCT) so as to enhance the features of each layer of human eye fixation area and reduce interference features; sending the frequency-domain-enhanced characteristics of each level into a decoding block of a corresponding layer of a decoder branch, and carrying out decoding and spatial up-sampling operation in sequence from a high layer to a low layer; and the output of the last decoding block of the decoder branch is subjected to 1 * 1 convolution and double up-sampling to obtain a human eye fixation point prediction result. According to the method, frequency domain feature enhancement and sequential decoding from a high layer to a low layer are carried out on the spatial multi-layer convolution features extracted by the backbone network, so that the human eye fixation point prediction precision is improved.

An interference reduction device is provided. The interference reduction device may include a magnetic shield positioned in proximity of a magnetic field. The magnetic shield is configured to reduce interference on the magnetic field along the direction of the magnetic field. The magnetic shield may include a cutout approximately parallel to the direction of the magnetic field, the cutout is configured to reduce a distortion caused by the magnetic shield on the magnetic field.

The present invention discloses a wireless communication circuit for reducing interference. The wireless communication circuit includes: a chip, a crystal, and an impedance element; the chip is provided with a crystal oscillator and a first ground port; the crystal is provided with a second ground port; the crystal oscillator is connected to the crystal; the impedance element is disposed between the crystal and the second ground port to block the disturbance of the second ground port from entering the crystal oscillator and at the same time reduce the influence of the disturbance of the first ground port on the crystal oscillator. The wireless communication circuit for reducing interference proposed by the present invention can reduce or even eliminate the influence of external interference signals on the crystal oscillator and improve the communication quality of the entire communication system.