38 results about "Channel modulation" patented technology

Aspects of the present disclosure relate generally to systems and methods for use in the implementation and / or operation of quantum information processing (QIP) systems, and more particularly, to a double individual-addressing multi-beam Raman system for use in QIP systems. A technique is described in which a first multi-channel modulator (MCM), a first telecentric zoom lens, and a first interleaver that form a first optical path of the Raman system that receives a first array of beams and adjusts the first array of beams to individually address atomic-based qubits in a chain from a first direction. Moreover, a second MCM, a second telecentric zoom lens, and a second interleaver form a second optical path of the Raman system that receives a second array of beams and adjusts the second arrays of beams to individually address the atomic-based qubits in the chain from a second direction different from the first direction.

The invention relates to the technical field of artificial intelligence and power grid management, in particular to a power consumption dynamic prediction method based on physical-semantic dual-channel modulation. A power consumption prediction model is trained, and power consumption is predicted based on power load time sequence data; the power consumption prediction model comprises a physical perception path, a semantic perception path, a fusion module and a liquid core computing architecture. According to the method, the physical perception path endows the model with the quick response capability to transient modes such as load sudden change, the semantic perception path ensures deep mining of a long-term periodic rule, and the physical perception path and the semantic perception path realize adaptive cooperation through gating fusion, so that the modeling and prediction precision of a complex non-stationary power load sequence is comprehensively improved.

The invention provides a lightweight SAR ship detection method based on an efficient attention mechanism. The lightweight SAR ship detection method comprises the steps of inputting a to-be-detected SAR ship image into a pre-trained lightweight ship detection model; feature extraction is carried out on the SAR ship image to be detected through the backbone network, the extracted features are fused through the neck network, and the fused features are predicted through the detection head to obtain a ship detection result; wherein each of the backbone network and the neck network comprises a feature extraction module ECMA-MF and a downsampling module ECAA-DS; the feature extraction module ECMA-MF is constructed based on a MetaFormer architecture and an efficient channel modulation attention mechanism, and is used for enhancing ship features and inhibiting background interference; the downsampling module ECAA-DS includes a packet convolution branch and an efficient channel aggregation attention branch for enriching ship features while downsampling. According to the method, the accuracy, the robustness and the real-time performance of SAR ship detection can be improved.

This application provides a method and apparatus for detecting channel modulation schemes. The method includes: hard demodulating the modulation data to be detected according to each modulation scheme in a candidate modulation scheme group to obtain demodulated bit sequences corresponding to each modulation scheme, forming a first demodulated sequence set; modulating the sequences in the first demodulated sequence set according to corresponding modulation schemes to obtain a modulation sequence set; obtaining error feature values ​​corresponding to each modulation scheme based on the modulation data to be detected, the modulation sequence set, and the feature value correction factors corresponding to each modulation scheme; and selecting the modulation scheme corresponding to the smallest error feature value as the modulation scheme of the modulation data to be detected. The technical solution of this application embodiment can improve the efficiency of the channel modulation scheme detection process.

The invention relates to a high-precision current copying circuit, and aims to solve the problem of current mirror copying precision caused by a channel modulation effect in a large-proportion current mirror copying process. The circuit comprises a current mirror copy tube, a negative feedback module and an adjusting tube. The grid voltage of the current mirror copying tube is externally input, and the negative feedback module is used for controlling the grid control voltage of the adjusting tube, so that the voltages at the Vsens end and the VBAT end in the circuit are kept the same, and the current copying precision is improved. And the negative feedback module samples and compares the voltages at the VBAT end and the VSENS end to generate a control signal to adjust the grid voltage of the adjusting tube, so that the drain-source voltage of the current mirror copy tube is controlled. In addition, the circuit also comprises a voltage stabilizing structure which is used for preventing the influence of power supply voltage fluctuation on the control node. The test result shows that the circuit can realize high-precision current copying when the current mirror proportion is 1: 1000, and the voltage at the VBAT end and the VSENS end is approximately the same in the change process, so that the circuit is suitable for application occasions with higher requirements on the current copying precision.

Methods, systems, and devices for channel modulation for a memory device are described. A system may include a memory device and a host device coupled with the memory device. The system may be configured to communicate a first signal modulated using a first modulation scheme and communicate a second signal that is based on the first signal and that is modulated using a second modulation scheme. The first modulation scheme may include a first quantity of voltage levels that span a first range of voltages, and the second modulation scheme may include a second quantity of voltage levels that span a second range of voltages different than (e.g., smaller than) the first range of voltages. The first signal may include write data carried over a data channel, and the second signal may include error detection information based on the write data that is carried over an error detection channel.

Aspects of the present disclosure relate generally to systems and methods for use in the implementation and / or operation of quantum information processing (QIP) systems, and more particularly, to a double individual-addressing multi-beam Raman system for use in QIP systems. A technique is described in which a first muti-channel modulator (MCM), a first telecentric zoom lens, and a first interleaver that form a first optical path of the Raman system that receives a first array of beams and adjusts the first array of beams to individually address atomic-based qubits in a chain from a first direction. Moreover, a second MCM, a second telecentric zoom lens, and a second interleaver form a second optical path of the Raman system that receives a second array of beams and adjusts the second arrays of beams to individually address the atomic-based qubits in the chain from a second direction different from the first direction.

The embodiment of the present application provides a kind of multimode dual-channel optical communication integrated device and implementation method, comprising: by buffer layer surface successively integrated first light source module, second light source module, mode multiplexing module, optical modulation module and dual-channel output module;By first light source module, first wavelength optical signal is sent and is transmitted to mode multiplexing module;By second light source module, second wavelength optical signal is sent and is transmitted to mode multiplexing module;By mode multiplexing module, first wavelength optical signal is combined with second wavelength optical signal as composite optical signal;By optical modulation module, composite optical signal is modulated to obtain dual-channel modulation signal;By dual-channel output module, dual-channel modulation signal is separated into independent first wavelength signal and second wavelength signal and is output to external optical communication system.

The invention discloses a satellite wireless communication modulation and coding method and system based on a bit error rate and a signal-to-noise ratio. The method comprises the following steps: acquiring satellite communication signal parameters; acquiring a real-time channel error rate according to the satellite communication signal parameter, and acquiring a real-time satellite communication channel signal-to-noise ratio if the channel error rate exceeds a first threshold value of a service communication error rate performance index; adjusting the channel signal-to-noise ratio, the channel modulation mode and the information source coding mode based on the channel signal-to-noise ratio, obtaining a real-time channel error rate after adjusting the information source coding mode, and adjusting the channel coding mode if the channel error rate exceeds a first threshold value of a service communication error rate performance index; after the channel coding mode is adjusted, a real-time channel error rate is obtained, and whether satellite wireless communication modulation and coding are successful or not is judged. According to the method, the problem that the channel quality is influenced by long-distance transmission and complex environment in satellite communication is solved, the channel data transmission quality of satellite communication is remarkably improved, and the error rate is ensured to be lower than a service demand threshold value.

The invention discloses a gamepad attitude resolving and self-calibration method based on multi-sensor fusion. The system is composed of a data fusion layer, a self-calibration state detection layer and a state interpretation and feedback layer, the three layers complete attitude estimation, state calibration and result interpretation in sequence, and self-adaptive optimization is achieved through closed-loop adjustment between result sets. According to the method, a dual-channel adaptive confidence stability modulation algorithm is introduced, two core mechanisms including a confidence coefficient dual-channel modulation mechanism and a stable time dual-channel modulation mechanism are established and used for cooperatively evaluating the reliability and the stability of a posture result, and system parameter adaptive adjustment and posture result output are driven at the same time through a dual-layer feedback mechanism. Therefore, dynamic balance between robustness and responsiveness is realized, and the precision and interpretability of attitude calculation are improved.

The invention relates to the technical field of signal processing, and provides a multi-channel pulse low and medium frequency signal generation system, which comprises a signal generation unit used for generating a multi-channel pulse signal, a low frequency signal and a carrier signal; the multi-channel pulse signal modulation unit is used for modulating the multi-channel pulse signal to generate a multi-channel modulation pulse signal; the power control unit is used for performing power control on the low-frequency signal and the multi-channel modulation pulse signal to generate a target low-frequency signal and a multi-channel target pulse signal; and the low and medium frequency signal modulation unit is used for synthesizing the target low frequency signal, the multi-channel target pulse signal and a carrier signal to generate a multi-channel pulse low and medium frequency signal. According to the system, through multi-channel pulse signal modulation and power control, multi-channel pulse low and medium frequency signals are accurately generated, and the flexibility and adaptability of the signals are enhanced.

The application relates to the technical field of optics, in particular to a low-crosstalk channel modulation interference polarization spectrum detection method and system, which comprises a half-field telescope module, a phase modulation module, an interference modulation module and a detection module; the half-field telescope module is used for collimating an input target light beam in a lower half field, the target light beam is parallelly transmitted to the phase modulation module according to a set range, a compound polarization beam splitter prism group in the phase modulation module performs a light splitting operation based on the target light beam output by the half-field telescope module, two parallel polarization lights are emitted, and independent phase modulation of the two lights is ensured; the interference modulation module is used for performing light splitting modulation according to the two polarization lights, ensuring that the two polarization light beams after modulation interfere and are transmitted to the detection module to be imaged. The system improves the detection precision of narrow-band polarization spectrum or polarization spectrum with obvious narrow-band wave peaks and narrow-band absorption peaks, and has strong polarization spectrum detection capability and wide application range.

The application discloses a deep cycle hyperspectral image processing method for marine subpixel target recognition. The hyperspectral image processing method provided by the application is based on simultaneous feature extraction of high and low resolution feature spaces, combines multi-channel segmentation adaptive weighting and channel modulation spectral information processing technology, utilizes a network combining spatial spectrum to perform parallel unmixing on two types of information, and significantly improves unmixing precision in a complex scene. The application can efficiently unmix and accurately classify complex spectral and spatial information in a hyperspectral image, has strong robustness and adaptability, is particularly suitable for marine environment monitoring, resource exploration and environmental protection and the like, can overcome the deficiency of traditional methods in high-dimensional features and generality in complex landform spectral separation and classification, and has important application value.

The embodiment of the invention provides a signal modulation method combining up-sampling and shaping filtering in a modulation process. The method comprises the following steps of: sending a code element value lookup table (1), then accumulating an impulse response sequence (8) after I-path table lookup and an impulse response sequence (9) after Q-path table lookup at a T0-Tn moment according to an up-sampling mode (7) to obtain an I / Q value (10) at the T0-Tn moment, and then forming a sending waveform signal through subsequent digital up-conversion and DA signal output. In the table lookup process, a single code element value (2) is decomposed into an I sequence value and a Q sequence value (3), the modulation and shaping filtering joint lookup table (4) is looked up respectively, and an I-path modulated impulse response sequence (6) and a Q-path modulated impulse response sequence (5) are obtained. The method has the advantages that the modulation and shaping filtering combined lookup table is utilized, the modulation process, up-sampling and shaping filtering combined calculation is realized, multiplication in the modulation and filtering process is eliminated, and the operand is saved.

The invention discloses an image segmentation method and system based on local-global fusion and channel modulation, and relates to the technical field of image segmentation, and the specific steps are as follows: coding an input remote sensing image through the combination of a local-global fusion attention module and a depth estimation module, and outputting a multi-scale fusion feature map; performing feature compression and segmentation, cross fusion, channel modulation and adaptive weighting on the multi-scale fusion feature map, and outputting a modulation feature map; and recovering the spatial resolution of the modulation feature map through step-by-step up-sampling and convolution, and performing segmentation to generate a pixel-level category prediction map. According to the method, the spatial distribution consistency of the features is optimized, the category consistency of the overall segmentation result is improved, the category confusion phenomenon is reduced, and the method is particularly suitable for a complex remote sensing image segmentation task containing multi-category and multi-scale targets.

The invention discloses a method for processing data loss caused by frequency offset in request-system satellite data transmission, and belongs to the technical field of satellite communication. The two-channel modulator of the dual-channel request system satellite respectively sends request frames to the data processor, and the request frames are combined and then output to the solid-state memory; the solid-state memory sends playback data of a corresponding data frame number of a single path to the data processor according to the frame number of the received request frames; the data processor averagely divides the received single-path playback data into two paths, respectively performs data processing, and generates a full identification signal; after data processing is completed, the data are output to a two-channel modulator according to the number of request frames of the path; when the full identification signal of any one of the two channels is 1, request frame combination is stopped, and at the moment, the solid-state memory pauses data playback. By detecting the capacity of the cached data in the caches in the two coding processing units in real time, the problem of data loss caused by frequency offset of a modulator clock crystal oscillator in satellite request system data transmission is reliably solved in real time.

The application relates to the field of artificial intelligence and feature enhancement technology, and provides a multi-head dynamic soft gating method based on cross-layer visual attention propagation trajectory bias, which comprises the following steps: acquiring a visual token sequence; calculating the weight of multi-head attention and single-head output; constructing a trajectory vector containing at least attention intensity, active attention intensity, entropy, change rate, divergence, historical gating, CLS bidirectional attention, CLS rollout accumulation and spatial neighborhood mean by using cross-layer attention; layer-in standardization; projecting into a bias injection current token representation; combining the bias representation and the trajectory to generate a layer-by-layer, head-by-head, token-by-token and channel-by-channel gating; writing into a cache, and obtaining an effective gating through strength coefficient conversion, and then modulating channel by channel before splicing; splicing and modulating output and projecting. The method can inhibit redundant propagation, retain token sequences and enhance foreground representation.

The invention discloses an underwater image enhancement method and system based on conditional collaboration and multi-scale observation, and the method comprises the steps: constructing a multi-scale degradation observation sequence for an original underwater image, and carrying out the multi-stage dual-domain conditional collaboration coding under the condition of the multi-scale degradation observation sequence. Channel domain modulation and spatial domain condition compensation are carried out in parallel in each level: channel modulation features are generated through channel attention and cross-branch interaction, spatial degradation is compensated through directional high and low frequency decomposition and weighted modulation, and conditional collaborative fusion of double-domain features is realized under the constraint of fusion weight generated by channel domain modulation. Structural prior features are extracted from a low-resolution observation image, and are fused with corresponding scale coding features to introduce physical constraint information. And outputting an enhanced image through cross-scale decoding and residual reconstruction. Collaborative optimization of color correction and structure detail recovery is realized under a unified framework, and the visual quality and the structure authenticity of an underwater image under a complex degradation scene and the robustness of an enhancement result are effectively improved.

A 6G-enabled AI protocol for real-time agent coordination, implemented on a TSMC N2 ASIC (2048 cores, 2 GHz), uses 256 QAM signals, DON scheduling, and Neuroelectrics NE-256CH EEG at 256 Hz for β-power prioritization, achieving sub-5 μs latency with 99.995% reliability over 10{circumflex over ( )}7 trials. It integrates symbolic channel modulation, zero-knowledge routing, EEG-based packet prioritization, sovereign containerization, DON task scheduling, symbolic DMA for sensor fusion, encrypted ledgers, and holistic network synthesis, yielding emergent AGI / ASI. Layers are scored for integrity, security, privacy, compliance, and governance via multiplicative formulas, achieving ≥0.99994. Compliant with GDPR, CCPA, and FDA via zk-SNARK and ethics arbitration, it supports autonomous vehicles, smart cities, and disaster-response networks.

This invention discloses a robust image semantic-driven steganography method based on a large language model and dual-channel modulation. By cleaning image descriptions, extracting image semantics and object cues, a large language model is jointly driven to generate steganographic text. A dual-channel feature modulation and multi-layer embedding mechanism is constructed to embed continuous floating-point secrets into the text through affine transformation. This invention can generate long steganographic text with consistent image semantics and low "illusion," and its statistical imperceptibility is lower than current methods. This method can still extract secret information well under four common word-level attacks, demonstrating high information transmission security and privacy protection capabilities.

The invention discloses a dual-channel modulation and demodulation method based on an EIT signal, and relates to the technical field of atomic physics, and the method comprises the steps: loading different low-frequency modulation signals for 852 nm laser and 509 nm laser; according to a Rydberg EIT signal generated by the same cesium gas chamber, an error signal related to frequency deviation of 852 nm laser and 509 nm laser is extracted; demodulating the modulation signals of the 852 nm laser and the 509 nm laser by using a lock-in amplifier to generate error signals related to the detuning amount of each laser frequency; generated error signals are fed back to a 852 nm laser device and a 509 nm laser device respectively, and driving current of the laser devices or an external modulator is adjusted through a PID (Proportion Integration Differentiation) controller. EIT signals generated by the same cesium gas chamber are utilized, frequency error signals of 852 nm laser and 509 nm laser are obtained at the same time, the frequency error signals are demodulated through the lock-in amplifier and fed back through the PID controller, the frequencies of the two laser beams are independently adjusted, dependence on an extra saturated absorption light path and an external optical cavity is greatly reduced, and the overall cost is reduced.

The invention provides a wireless communication system based on signal processing, and relates to the technical field of wireless communication. The wireless communication system based on signal processing comprises a signal source, the signal source is connected with an information source code, the signal source is connected with a signal encryption unit, the information source code is connected with a channel modulation unit, the channel modulation unit is connected with a modulator, and the modulator is connected with a channel; the channel is connected with a noise source, the noise source is connected with a noise reduction device, the channel is connected with a signal compensation device, the channel is connected with a demodulator, the demodulator is connected with a channel decoding device, the channel decoding device is connected with an information source decoding device, and the information source decoding device is connected with an information sink. According to the wireless communication system based on signal processing provided by the invention, the wireless communication system based on signal processing has a very effective compensation effect on weak signals generated by a speed effect in a multipoint wireless communication system, and the communication quality is also remarkably improved.

N-channel modulation-doped field-effect transistors (N-MODFETs) in which a two-dimensional electron gas (2DEG) channel is formed in intrinsic diamond are provided. The n-MODFETs can be made using bandgap engineering and a transfer and grafting process to couple intrinsic diamond, which has a very high electron mobility, with a highly n-type doped aluminum gallium nitride (AlGaN) alloy as an electron donor material to realize a high-cutoff frequency (fT) MODFET for radiofrequency (RF) electronics applications.

This invention discloses a super-resolution microscopic imaging method based on multi-channel modulation and demodulation. First, this invention utilizes the synergistic effect of a spatial light modulator and an electro-optic deflector to generate multiple hollow illumination spot arrays. Second, during the scanning of the target sample, fluorescence signals are acquired for the illumination area of ​​each hollow illumination spot, corresponding one-to-one with the multi-channel hollow illumination spot array according to the sampling time sequence. Then, pixel-level signal redistribution processing is performed on the acquired multi-channel images. The redistributed image stack is divided into at least three regions, and corresponding weighting coefficients are applied to the signals of different regions for linear or nonlinear combination. Finally, an inverse Fourier transform is performed on the weighted combined image to obtain the super-resolution image. This invention can extend the support domain of the optical transfer function, achieving a resolution superior to traditional confocal and single-point hollow excitation and detection methods.

The application discloses an image segmentation method and system based on local-global fusion and channel modulation, and relates to the technical field of image segmentation. The specific steps are as follows: a local-global fusion attention module and a depth estimation module are combined to encode an input remote sensing image, and a multi-scale fusion feature map is output; the multi-scale fusion feature map is subjected to feature compression and segmentation, cross fusion, channel modulation and adaptive weighting, and a modulation feature map is output; the spatial resolution of the modulation feature map is restored through step-by-step upsampling and convolution, and a pixel-level class prediction map is generated through segmentation. The application optimizes the spatial distribution consistency of features, helps to improve the class consistency of the overall segmentation result, reduces the class confusion phenomenon, and is especially suitable for complex remote sensing image segmentation tasks containing multiple classes and multiple scales.

The invention relates to the technical field of semiconductors, in particular to a Schottky and ohmic mixed drain enhanced GaN high electron mobility transistor, which comprises a metal source, a metal gate, a P-GaN region, a first Schottky drain, an ohmic drain, a second Schottky drain, an AlGaN barrier layer, a GaN channel layer, an AlGaN buffer layer, an AlN nucleating layer and a substrate layer. The first Schottky drain electrode contact metal has the effect similar to a field plate, channel modulation and electric field modulation of the second Schottky drain electrode contact etched to the GaN channel layer can effectively optimize electric field distribution of a drain end, and withstand voltage of the device is improved; meanwhile, the current can be more effectively guided to flow to the whole ohmic region under the action of improving electric field distribution through contact of the first Schottky drain electrode and the second Schottky drain electrode, so that electron injection is more sufficient, the effective channel width is increased, current crowding can be remarkably improved, the on-resistance is reduced, the output current is improved, and the reliability of the device is improved. And the problem of compromise contradiction between the on resistance and the withstand voltage of the device is solved.

The application discloses a game handle posture solution and self-calibration method based on multi-sensor fusion. The system is composed of a data fusion layer, a self-calibration state detection layer and a state interpretation and feedback layer. The three layers complete posture estimation, state calibration and result interpretation in sequence, and realize adaptive optimization through closed-loop adjustment between result sets. The method introduces a double-channel adaptive confidence stability modulation algorithm, establishes two core mechanisms of confidence double-channel modulation mechanism and stability time double-channel modulation mechanism, which are used for cooperative evaluation of the reliability and stability of the posture result, and simultaneously drives the system parameter adaptive adjustment and the posture result output through a double-layer feedback mechanism, so that a dynamic balance between robustness and responsiveness is realized, and the accuracy and interpretability of the posture solution are improved.

The invention provides an optical chip, a laser and a light quantum computer, and the optical chip comprises a first light incoming waveguide, a second light incoming waveguide, a first beam splitter, a second beam splitter, a third beam splitter and a channel modulator. The first light incoming waveguide is used for being connected with a single light source. The two second light incoming waveguides are used for being connected with the two light sources in a one-to-one correspondence mode. The first beam splitter is in coupling connection with the first light incoming waveguide. The number of the second beam splitters is two, one input port of each second beam splitter is in coupling connection with the output port of the first beam splitter, and the other input port of each second beam splitter is in coupling connection with the second light incoming waveguide. The number of the third beam splitters is four, and the third beam splitters are coupled to the two output ports of the second beam splitter. The channel modulators are coupled to the output ports of the plurality of terminal beam splitters in a one-to-one correspondence manner. According to the technical scheme, the optical chip can be suitable for working conditions with different input light source numbers, the adaptability is improved, and the production cost is reduced.

The invention provides an incoherent light long-distance three-dimensional imaging device using multi-beam synthesis, and relates to the technical field of incoherent light correlated imaging. The three-dimensional imaging device adopts multi-beam emission and optical synthetic aperture receiving, the number of emission beams can be increased according to application scenes, the emission power is improved, and the three-dimensional imaging device is suitable for long-distance imaging; the increase of the receiving aperture baseline can further improve the imaging resolution; in addition, long-distance amplitude random and phase random incoherent light synthesis can be realized by utilizing multi-channel modulation and atmosphere random modulation; according to the mode of combining active and passive amplitude and phase random modulation, a high-collimation, high-intensity and narrow-band thermal light source is synthesized, the disadvantage of short coherence time caused by inherent periodicity of active modulation and too low atmospheric modulation speed is made up, and anti-turbulence high-resolution three-dimensional imaging of a long-distance target can be achieved through second-order coherence of the light source.

The invention discloses a Chirp signal encoding and decoding method for indoor positioning, and relates to the technical field of communication, the method comprises the following steps: pre-constructing a Chirp code segment set of orthogonal dual channels, the set comprising independent code segments corresponding to different bit values; acquiring a serial bit stream bearing positioning and ranging information, calling a corresponding code segment according to a bit value to output an orthogonal dual-channel Chirp modulation signal, generating a time sequence latch signal, and prohibiting a new bit stream from being input in a current frame processing period; a modulation signal is collected and converted into a digital sampling signal, and the sampling signal and the code segment set are subjected to full-segment matching to obtain a matching result; restoring the serial bit stream according to a matching result, and synchronously updating the time sequence latch signal to allow a new bit stream to be input; and circularly executing the process to complete the continuous ranging frame encoding and decoding of indoor positioning. According to the method, the problems of frame processing time sequence disorder and bit stream crosstalk are relieved through time sequence closed-loop management and control, and the stability and coherence of continuous ranging encoding and decoding are improved.