98 results about "Spatial modulation" patented technology

The invention discloses a visual detection method and system for tea impurities, electronic equipment and a storage medium, and the method comprises the steps: obtaining a to-be-detected tea image and a training image data set, and carrying out the preprocessing of image data in the training image data set; inputting a to-be-detected tea image into a trained tea impurity detection model to obtain a plurality of tea impurity detection results containing confidence coefficients of a to-be-detected target and a detection frame, the trained tea impurity detection model comprising a backbone network, a neck network and a plurality of detection heads, the backbone network comprises a ScharrStem module, a first SGCB improved module and a second SGCB improved module, and the neck network comprises a first SGCB improved module, a second SGCB improved module and a channel sensing spatial modulation module; and determining a target tea leaf impurity detection result according to the confidence coefficient and the detection frame in the plurality of tea leaf impurity detection results. The detection accuracy of the tea impurities can be improved.

The invention discloses a springback compensation control system for a metal stamping part, and belongs to the technical field of metal plate forming. The system comprises a stress memory prediction module, a fractal compensation analysis module, a phase change compensation regulation and control module, a compensation decision fusion module and an execution feedback optimization module. The stress memory prediction module extracts stress evolution characteristics of the stamping process through a multi-scale memory network and a time decay attention mechanism; the fractal compensation analysis module adaptively adjusts the compensation grid density based on the fractal dimension to realize optimal configuration of computing resources; the phase change compensation regulation and control module predicts the phase change behavior of the material through the thermal-mechanical coupling constitutive model and calculates the compensation correction amount caused by phase change; the compensation decision fusion module intelligently fuses three compensation strategies by adopting Bayesian reasoning and a spatial modulation function; and the execution feedback optimization module realizes continuous optimization of the system through online learning. According to the method, the influence of three dimensions of stress history, geometric complexity and material phase change is comprehensively considered, accurate prediction and compensation of the springback behavior are achieved, and the forming precision and production efficiency of the metal stamping part are remarkably improved.

A spatial adaptive multi-user service modulation and demodulation method suitable for various channel environments is characterized in that an uplink channel is configured with multiple paths of general carriers and multiple paths of helicopter special carriers in a frequency division mode, and the general carriers support uplink adaptive information transmission of terminals of various types and sizes in an MF-TDMA (Multimedia Frequency-Time Division Multiple Access) system; the on-satellite demodulator obtains a modulation coding mode of a burst data segment by identifying mode word information in a physical layer frame header, and demodulates a corresponding mode; the carrier special for the helicopter uses a continuous carrier mode, and multi-rate channel error correction coding and decoding under rotor wing shielding are supported in a channel interleaving mode. Downlink transmission is carried out in a fixed time slot and free time slot time division mode, and downlink information transmission for universal multi-type terminals and helicopter terminals can be supported at the same time. Compared with a common spatial modulation and demodulation method, the modulation and demodulation scheme provided by the invention can support adaptive transmission of general services of multiple types of terminals and helicopter service information on both an uplink and a downlink by using one satellite-borne modem.

The invention relates to the technical field of photoelectric detection, in particular to a photocurrent imaging system based on a probe station and an electrometer. The system generates a focused detection light beam through a light path system, the focused detection light beam irradiates a sample carried by a probe station after being spatially modulated by a mask plate, weak light current signals generated by the sample are collected by an electrometer, and a high-resolution light current distribution image is generated by combining scanning motion of a high-precision electric control displacement platform and intelligent processing of computer software. A physically-driven signal enhancement model, a multi-dimensional noise suppression algorithm and a dynamic imaging optimization formula are innovatively designed, the problems that in the prior art, weak light current detection precision is low, the scale connection error is large, and imaging efficiency is insufficient are solved, accurate quantitative analysis of the photoelectric characteristics of materials is achieved, and the method is suitable for popularization and application. The method is suitable for semiconductor device research and development, solar cell performance evaluation, biosensor detection and other scenes, and has both detection precision and application flexibility.

The application discloses a long-wave infrared dynamic space modulation device and method based on double coding apertures, and belongs to the technical field of optics. The application avoids the diffraction effect in the long-wave infrared space modulation process by selecting a large-size coding pixel coding aperture, adopts a double coding aperture space light modulation structure, separately performs space modulation on target light beams, and realizes coding effect superposition through beam combination, so that the space modulation resolution of the large-size coding pixel coding aperture is improved. On the premise of guaranteeing the space modulation resolution requirement and without increasing the coding aperture area, the diffraction effect in the long-wave infrared space modulation process is avoided by selecting the large-size coding pixel coding aperture. The application introduces the use of a displacement table, and the position of the moving coding template is transformed for multiple times within the single information acquisition time of the system, so that the effective coding area in the optical path is transformed, more coding superposition effects are generated, and the coding resolution and the coding gray scale are further improved.

The invention discloses a boundary perception gating cross-scale feature fusion method for a remote sensing image, belongs to the technical field of computer vision and remote sensing image processing, and particularly relates to the field of remote sensing target detection. Aiming at the problems of insufficient cross-layer alignment, boundary confusion, insufficient small target recall and the like in the prior art, the invention provides a boundary perception gating cross-scale feature fusion method for a remote sensing image. The method comprises the following steps: constructing an Epag module containing Scharr edge prior and logit space fusion, and realizing dual-branch feature adaptive fusion; designing an SAFM module with channel separation and multi-scale pooling, and completing spatial adaptive enhancement; the two modules are integrated at the neck of a detection network, and multi-scale features are output through top-down gating fusion and spatial modulation. According to the method, the target boundary positioning precision and the multi-scale adaptation capability are remarkably improved, multiple technical pain points are solved, mAPs on DOTA1.0 and DIOR-R data sets are improved respectively, multiple detectors are adapted, and accurate technical support is provided for remote sensing application such as urban planning and traffic monitoring.

A semiconductor device comprising: a silicon substrate; at least one P+ / N-well structure formed on the substrate, the at least one P+ / N-well structure comprising a first set of N-well layers coupled to an extra positive extrinsic electric field, and a second set of N-well layers coupled to an extra negative extrinsic electric field; and whereby the extra positive extrinsic electric field and the extra negative extrinsic electric field accelerate movement of carriers in the layers.

The embodiment of the invention provides an optical system and optical processing equipment. The optical system comprises a light source module, a polarization modulation module, a micromirror array and an objective lens assembly. The light source module is used for outputting femtosecond laser pulses. The polarization modulation module is used for receiving the femtosecond laser pulse and modulating the polarization state of the femtosecond laser pulse into a circular polarization state. And the micro-mirror array is used for receiving the femtosecond laser pulse in the circular polarization state and performing spatial modulation on the femtosecond laser pulse to generate different patterns. The objective lens assembly is used for receiving and focusing the pattern to the surface of the sample. Thus, the femtosecond laser pulse passing through the polarization modulation module has the same polarization state in all directions, so that the absorptivity and the working efficiency of different positions of the sample M are consistent in the laser processing process, and the processing quality and effect are improved. Moreover, the micro-mirror array is sensitive to the polarization state, so that energy loss and non-uniformity caused by polarization can be avoided, and the processing uniformity and the processing precision can be further improved.

The invention discloses a crop leaf disease detection method and system based on an improved YOLOv11 model, and the method comprises the steps: obtaining image data of crop leaves, carrying out the preprocessing of the image data, and inputting the preprocessed image data into an improved and trained YOLOv11 model; performing feature extraction on the image data to obtain an input feature map, and performing multi-scale processing through an adaptive down-sampling module to obtain a multi-scale primary feature map; performing space and channel attention weighting on the multi-scale primary feature map through a multi-scale local attention module; and / or in at least another fusion layer, performing spatial modulation and channel attention fusion on the multi-scale primary feature map through a space-channel fusion attention module to obtain a multi-scale fusion feature map; and outputting a detection result according to a detection head in combination with the multi-scale fusion feature map. According to the invention, the precision and robustness of disease detection can be improved, and the calculation overhead is reduced.

The invention discloses a high-dynamic three-dimensional reconstruction method based on cooperative regulation and control of a projector and a camera. At a camera end and a spatial light modulator, according to a pre-calibrated spatial mapping relation between the camera and the spatial light modulator, the corresponding position of an overexposure pixel on the spatial light modulator is accurately positioned, local gray scale attenuation is carried out on the overexposure pixel, and spatial domain intensity suppression of reflected light is realized; and when the adjustment of the spatial light modulator is insufficient to completely eliminate the overexposure area, the system starts the brightness modulation of the projector end, analyzes the image brightness distribution in real time through the camera, and dynamically adjusts the projection brightness of the local area by adopting a self-adaptive projection strategy to avoid overexposure of the high-reflectivity area. The process forms a closed-loop linkage control strategy of projection self-adaption and spatial modulation compensation, and the fringe imaging quality and the three-dimensional reconstruction precision of the system in a high dynamic range scene are remarkably enhanced.

This invention relates to the fields of physiological signal processing and emotion recognition technology, and discloses a method for recognizing physiological and emotional states of diverse populations. The method includes: acquiring facial video streams, infrared thermal imaging, and electrodermal signals; performing spectral adaptive enhancement based on skin color to obtain a spectrally enhanced video stream; inputting the spectrally enhanced video stream into a spatially modulated attention network to obtain a remote photoplethysmography waveform; extracting temperature distribution features from infrared thermal imaging; extracting electrodermal response features from electrodermal signals; aligning the three signals spatiotemporally and constructing alternative features for the failed signal based on the signal-to-noise ratio; inputting the three signals and alternative features into a multimodal signal pattern recognition network for weighted fusion, outputting a fused physiological feature; inputting the fused physiological feature into a population-level verification network for population adaptive matching and individual baseline correction, outputting the final emotional state. This invention achieves robust, fair, and accurate emotion recognition for diverse populations.

The invention discloses a communication method for realizing orthogonal time chirp space modulation based on discrete Fresnel transform, which is suitable for a mobile scene, and is characterized in that a data symbol is modulated on a two-dimensional complex chirp carrier on a delay-Fresnel Doppler plane, and the system performance is improved by using the interference resistance of the chirp wave. The system for realizing orthogonal time chirp spatial modulation based on discrete Fresnel transform provided by the invention has better bit error rate performance under a time-varying channel, especially under a high signal-to-noise ratio condition, is especially suitable for high-speed mobile application, and only increases a small amount of phase rotation complexity compared with OTFS.

A method of decoding information encoded in respective activation modes of an activated subset of antennas of a MIMO transmitter transmitting orthogonally modulated signal components, the method comprising: decoupling a real part and an imaginary part of a signal component of a received signal vector, respective channel matrices of real and virtual channels are received, determined, or estimated, and real and virtual signal components are represented as respective products of transmitted symbol components and activation unit vectors. The respective activation unit vectors of the decoupled real and imaginary parts are then represented with corresponding random variable vectors that are dependent on a probability quality function of the activation pattern available at the transmitter. Then, a Gaussian belief propagation-based messaging process is applied to the random variables to jointly estimate activation unit vectors of the respective real and imaginary parts of the received signal vector, and finally the activation unit vectors are decoded to obtain the information.

This application discloses a visual detection method, system, electronic device, and storage medium for tea impurities. The method acquires an image of the tea to be detected and a training image dataset, preprocesses the image data in the training image dataset, and inputs the image of the tea to be detected into a trained tea impurity detection model. This yields multiple tea impurity detection results containing confidence scores and detection boxes for the target tea. The trained tea impurity detection model includes a backbone network, a neck network, and multiple detection heads. The backbone network includes a ScharrStem module, a first improved SGCB module, and a second improved SGCB module. The neck network includes a first improved SGCB module, a second improved SGCB module, and a channel-aware spatial modulation module. Based on the confidence scores and detection boxes in the multiple tea impurity detection results, the detection result for the target tea impurity is determined. This application can improve the detection accuracy of tea impurities.

The application discloses a digital rock reconstruction method and device, equipment and medium, and relates to the field of digital rock reconstruction, and comprises the following steps: extracting micro-texture features in two-dimensional scanning electron microscope image data to obtain corresponding texture feature vectors, and performing integration processing on the texture feature vectors to obtain target texture feature vectors; extracting structural feature information from three-dimensional computer tomography image data, splicing the target texture feature vectors and target noise, and mapping the spliced vectors into target style vectors; fusing the structural feature information and the target style vectors to obtain a three-dimensional feature map, capturing geometric feature responses corresponding to local geometric structures of rocks in the three-dimensional feature map, and generating spatial modulation weights matched with the local geometric structures of the rocks; performing voxel-by-voxel weighted modulation on the three-dimensional feature map according to the spatial modulation weights to obtain a target feature map, and generating target three-dimensional digital rock body data based on the target feature map.

The application discloses a free-form surface optical imaging method and system, and relates to the technical field of true three-dimensional technology; the technical points are as follows: acquiring light field source data; forming optical emission parameters, and constructing a three-dimensional physical coordinate sequence based on a discretized three-dimensional voxel set; collecting a surface equation parameter of the free-form surface and a physical distribution parameter of a light field projection array; arranging an optical path transmission matrix according to four dimensions of a light source horizontal coordinate, a light source vertical coordinate, a target space horizontal coordinate and a target space vertical coordinate to obtain an initial four-dimensional light ray transmission tensor; calling a tensor decomposition operator to perform dimension reduction processing on the four-dimensional light ray transmission tensor to generate a spatial modulation characteristic base matrix; generating a modulation driving flow based on the light field source data and the spatial modulation characteristic base matrix; driving the light field projection array to output a modulation light field according to the modulation driving flow; and the modulation light field is reflected or transmitted by the free-form surface and converges at a specified physical space position to form a spatial three-dimensional pixel; and the application improves the precision and definition of true three-dimensional imaging.

A rotating magnet magnetic field vector interference compensation method based on adaptive spectrum tracking, comprising: establishing a reference digital model of a rotating magnetic component, obtaining a raw magnetic measurement vector signal sequence of a three-component magnetic sensor at a preset observation point, and constructing a time-domain observation vector; establishing a finite harmonic model of each axial component; establishing a spatial modulation function; combining the finite harmonic model with the spatial modulation function to obtain a modulated time-domain signal; performing fast Fourier transform on the modulated time-domain signal, adaptively updating second-order IIR notch filter parameters under candidate frequency point set constraints, and then performing inverse fast Fourier transform to obtain a noise-reduced time-domain magnetic field signal; obtaining a non-stationary magnetic field signal across rotating speeds based on the noise-reduced time-domain magnetic field signal; performing vector fusion and coordinate unification on the non-stationary magnetic field signal to output a final dynamic magnetic vector signal mapping after interference compensation. The present application can improve the filtering effect on noise frequency points and improve the interference compensation effect.

The image output device disclosed herein facilitates the enlargement of stereoscopic images. This image output device includes a spatial modulator, an image illumination unit, and an addressing light illumination unit. The spatial modulator has a main surface, a back surface, and multiple pixels, reflects light illuminating the main surface, and modulates the phase of the light for each pixel. The image illumination unit illuminates light containing a two-dimensional optical image on the main surface. The addressing light illumination unit illuminates addressing light containing a diffraction grating pattern on the back surface. Each pixel of the spatial light modulator changes its phase modulation amount according to the intensity of the addressing light illuminating from the back surface. The addressing light illumination unit is configured such that the direction of the diffraction grating pattern on the back surface dynamically changes. The image illumination unit illuminates a two-dimensional optical image on the main surface corresponding to the direction of the diffraction grating pattern.

The invention relates to a visual training instrument control method and system with a phototherapy function, a terminal and a medium, and relates to the technical field of phototherapy, and the method comprises the steps: obtaining the diopter information of a user; performing diopter compensation adjustment on the light source according to the diopter information to obtain a reference light path; controlling the light source modulation plate to carry out spatial modulation on the reference light path to obtain a light distribution image; generating a fixation target in the central area of the light distribution image, and fusing a fixation target light path with the reference light path through a reflective mirror and a semi-transparent and semi-reflective mirror to obtain a fused light path; controlling the fixation target to move back and forth along the visual axis direction of the fusion light path; correcting the position of the fixation target and the focusing parameter of the light source according to the eye image of the user; and based on the corrected focusing parameter, adjusting the output parameter of the light source in real time, so that the irradiation intensity output by the light source is synchronous with the eye adjusting state of the user. The visual adjustment capability can be improved, and the visual function recovery effect can be improved.

This invention relates to a symbol detection method for an orthogonal time-frequency spatial modulation system combining LMMSE and MRC, belonging to the field of mobile communication. Based on the orthogonal time-frequency spatial OTFS modulation system, linear minimum mean square error (LMMSE) detection is first performed in blocks in the time domain. The detection results are then combined and converted to the time-delay-Doppler domain for orthogonal amplitude demodulation. The demodulated results are then converted to the time-delay-time domain and used as the initial values ​​for the maximum ratio combining (MRC) detection algorithm in the time-delay-time domain, thereby improving the bit error rate performance of the MRC detection method. Simulation experiments verify the effectiveness of this invention. Compared with other initialization detection methods, this method has a lower bit error rate at high communication rates and also exhibits superior performance in high-speed mobile scenarios.

The application relates to the technical field of image recognition and understanding, and discloses a dynamic calibration and adaptation system for industrial visual detection and positioning guidance integration, which comprises an imaging and collecting module for collecting original digital images; a feature re-anchor module for extracting semantic anchor points and calculating a drift tensor; a dynamic calibration and adaptation module for generating a space modulation mask based on the drift tensor, according to which the original digital images are sharpened and their contrast is modulated, and a parameterized three-dimensional grid is driven to generate geometric topological deformation to reconstruct a virtual space positioning reference; and an execution guidance module for outputting a pose parameter according to the positioning reference. The application converges physical environment interference into high-frequency information repair in the digital domain of images, eliminates negative conduction of mechanical hysteresis on calibration accuracy, strengthens the supporting force of bottom image quality on high-level semantic understanding, and enhances the anti-shock stability of the system in a dynamic scene.

The invention discloses a single Rydberg atom receiver multi-target direction of arrival estimation method based on spatial resolution fluorescence spectrum analysis. According to the method, a modulation pattern formed by interference of a plurality of radio frequency signals and a local oscillation field in the steam chamber is obtained through spatial resolution fluorescence imaging, traditional lumped power measurement is replaced, and therefore multi-target spatial information is completely reserved. On the basis, complex spatial modulation caused by a plurality of signals is linearized into superposition of sine waves with different spatial frequencies by utilizing a strong local oscillation condition, so that a multi-target direction-of-arrival estimation problem is converted into a classical frequency spectrum estimation problem. And finally, through spectrum analysis, extracting each spatial frequency and calculating a corresponding direction of arrival. According to the method, through the core steps of spatial resolution imaging, linear modeling and spectral analysis, the limitation that a single Rydberg atom receiver can only estimate a single target is fundamentally broken through, and simultaneous estimation of the directions of arrival of a plurality of signal sources by using a single receiver is realized.

The invention discloses an RIS auxiliary spatial modulation blind detection method and system based on structural constraint, and relates to the technical field of wireless communication, and the method comprises the steps: constructing an RIS auxiliary spatial modulation communication system, and obtaining a receiving signal of the RIS auxiliary spatial modulation system; the method comprises the following steps: reconstructing a received signal by constructing a matrix to obtain a channel model, and performing equivalent transformation on the channel model to obtain an equivalent channel model; maximum likelihood signal detection is converted into an unsupervised clustering task through an equivalent channel model; based on the amplitude and phase characteristics of the channel, constructing a structure constraint clustering detector; and iterating the unsupervised clustering task through a structure constraint clustering detector, and carrying out blind detection on the signal. According to the method, the accuracy and the robustness of detection are improved, and meanwhile, low complexity is kept and the method is completely independent of CSI (Channel State Information).

This invention discloses a method and apparatus for obtaining the original aperture and shearing amount of an interference system with arbitrary aperture. The method includes: acquiring multiple frames of phase-shifted interferograms in the x and y directions of a transverse shearing interferometer system, and fusing them to obtain a spatial modulation quality map; using the gray values ​​of each pixel in the spatial modulation quality map as features, and employing a K-means clustering algorithm to label each pixel as an interference region, a non-interference region, and a background region; based on the known shearing direction, spatially reorganizing the interference region and the non-interference region to generate an original aperture mask and a sheared aperture mask; calculating the centroid coordinates of the mask, and determining the shearing amount based on the distance between the two centroids. This invention requires no prior knowledge of the aperture shape, is fully automated, and is applicable to arbitrary apertures such as rectangles, ellipses, and rings. It also maintains high robustness and accuracy in interferograms with dense fringes, blurred edges, or noise.

The utility model discloses a spectral confocal three-dimensional measurement system based on spatial modulation, comprising a light source used for generating a compound color light beam; the light space modulation element is used for adjusting the incident space position of the incident light of the light source in a time-sharing manner; the dispersion imaging optical assembly is used for dispersing the multi-color light beams adjusted by the light space modulation element and focusing the multi-color light beams to different depths in the first space direction; after the position of the incidence space is adjusted, light with different depths correspondingly enters different positions of the surface of a sample to be measured, is reflected by the sample to be measured and then is coupled into an imaging spectrometer. According to the system realized by the utility model, the measurement precision and the measurement speed can be effectively improved by virtue of the change of the light position in space by the light space modulation element and the combination of the corresponding dispersion imaging light path element.

The invention provides a magnetic material surface temperature gradient generation method based on laser regulation and control, and relates to the field of data processing. According to the method, optical absorption, electron energy relaxation, phonon thermal conductivity and magnetic anisotropy parameters of a magnetic material are obtained, modeling is carried out in a three-dimensional space according to a silicon-based substrate, a cobalt layer and a platinum layer, and a cross-scale photo-thermal-magnetic full-coupling model is constructed. The method comprises the following steps: generating a laser coding tensor through light intensity, wavelength and phase parameters of a laser space modulation array, driving a model to solve in a simulation environment, generating temperature gradient evolution data and an implicit field quantity, and constructing a temperature gradient control database. After target temperature gradient distribution is set, a depth prediction model is used for outputting a temperature gradient evolution sequence, sensitivity distribution is calculated through the model, the optimal laser coding tensor is determined, finally verification and application to a laser array are carried out, and temperature distribution consistent with the target temperature gradient is achieved. By implementing the technical scheme, the temperature gradient on the surface of the magnetic material is convenient to generate.

A transmission device according to the present invention includes: a beam generation unit that generates an Airy beam having a property in which radio waves are spatially asymmetric; and a control unit that performs spatial modulation of a carrier wave by controlling a phase pattern such that spatial distribution of the Airy beam generated by the beam generation unit is different.　

The invention discloses a terahertz liquid crystal spatial light modulator with large modulation depth and ultra wide band, which belongs to the field of novel artificial electromagnetic materials and terahertz science and comprises an upper-layer quartz substrate, an upper-layer metal grating, an upper-layer pre-oriented film, a liquid crystal layer, a lower-layer pre-oriented film, a lower-layer metal grating and a lower-layer quartz substrate which are sequentially stacked and arranged, the upper-layer metal grating and the lower-layer metal grating are orthogonally arranged in space to form a Fabry-Perot cavity; the liquid crystal layer is filled between the upper pre-oriented film and the lower pre-oriented film, and the liquid crystal director has in-plane pre-orientation; the upper-layer metal grating and the lower-layer metal grating serve as a first electrode and a second electrode respectively and are used for receiving external voltage and controlling the liquid crystal director to be dynamically switched between an in-plane state and an out-of-plane state; according to the invention, the spatial modulation of the incident terahertz wave intensity can be realized, and the problems of photoelectric function conflict and pixel crosstalk of a metal structure are effectively solved.

This invention discloses a multi-level polarization-coded differential spatial modulation method and related apparatus based on a set-partitioned antenna matrix. In this invention, the transmitter divides the uncoded bit sequence into AM and MPSK layer sequences, performs multi-level polarization coding on the AM and MPSK layer sequences respectively, maps them to AM and MPSK symbols, and generates the transmission signal through differential spatial modulation. The receiver employs a multi-level decoding method matching the transmitter, using the estimation results of the decoded bits from the previous stage as prior information to assist the subsequent decoding, finally recovering the estimated antenna matrix and the decoded bit sequence. Based on the characteristics of polarization codes and DSMs, this invention proposes a set-partitioned AM with stronger overall distinguishability and signal polarization effect. By cascading channel polarization and signal polarization, the mapping relationship between polarization coding and antenna activation modes is strengthened, effectively improving the system's error rate performance and anti-interference capability.

The application discloses a kind of intelligent reflecting surface assisted spatial modulation system reflection coefficient optimization method, belong to wireless communication field, the information bits to be sent of sending end is divided into several information blocks with same length, according to each information block selects corresponding active antenna and sends specific signal;Optimize the coefficient of reflecting element on intelligent reflecting surface, maximize the Euclidean distance between different receiving signals;Maximum likelihood detection decoding is used at receiving end, and the original information bits are recovered.The application combines intelligent reflecting surface with spatial modulation scheme, reconstructs wireless channel using intelligent reflecting surface, increases the Euclidean distance between different receiving signals, improves the error performance of system, and can obtain better error performance than existing algorithm under the same condition.