16results about How to "Improve Spectrum Utilization Efficiency" patented technology

The invention discloses a broadband wide frequency spectrum analysis method and system based on deep learning. The method comprises the steps of spectrum signal acquisition, spectrum preprocessing, abnormal interference detection, spectrum trend prediction and spectrum scheduling management. The invention relates to the technical field of wide-frequency spectrum analysis, in particular to a broadband wide-frequency spectrum analysis method and system based on deep learning, which adopts a three-step method of abnormal interference detection, spectrum trend prediction and spectrum scheduling management, and adopts a layer-by-layer progressive deep learning and reinforcement learning technology. The real-time detection of spectrum abnormity, the accurate prediction of future trend and the optimal allocation of dynamic resources can be realized; carrying out abnormal interference detection by adopting a joint improvement multi-classification support vector machine method combined with feature enhancement; performing spectrum trend prediction by adopting a time sequence integrated network combined with one-dimensional convolution feature extraction; and performing spectrum scheduling management by adopting a reinforcement learning method enhanced by a near-end strategy optimization algorithm.

The invention provides a low-voltage communication demodulation platform, which relates to the technical field of communication and comprises a demodulation main system. The demodulation main system comprises a signal acquisition module, a data storage module, a clock management module, an interface module, a fault detection and recovery module, a protocol conversion module, a signal processing module, a frequency spectrum management module, a safety communication module, a power grid environment adaptation module and an intelligent demodulation module. The intelligent demodulation module realizes adaptive modulation identification and demodulation through a content convolutional neural network (CNN) and a support vector machine (SVM), the CNN is used for extracting features of carrier signals, and the SVM performs modulation mode classification; the intelligent demodulation module is combined with a Kalman filter through a generative adversarial network (GAN) to realize channel noise processing and enhancement, the GAN is used for generating a low-noise signal, and the Kalman filter further optimizes the signal quality.

The invention discloses a non-line-of-sight network bridge communication control method based on an outdoor deployment scene and related equipment. The method comprises the following steps: acquiring scene region division information, a position relationship and associated video monitoring equipment distribution information in a scene to which a network bridge belongs; based on the scene area division information, the position relationship and the associated video monitoring equipment distribution information, determining a control influence relationship among all the video monitoring equipment; and determining a video acquisition control state and a communication control state of a controlled influence device corresponding to the master control influence device according to the control influence relationship and video content acquired by the master control influence device. The problem that although the new Wi-Fi standard usually considers energy efficiency, higher performance and complexity may also bring greater energy consumption can be solved. And especially for a network bridge product of which the receiving end is in an outdoor deployment scene, the energy consumption of a communication product greatly affects the use effect of the network bridge product.

The invention relates to the technical field of communication navigation, and particularly discloses an RSMA-based communication and navigation integrated signal positioning method, which comprises the following steps of: performing time service synchronization on a base station by using a navigation satellite, and acquiring navigation positioning information required by a user side by the base station; rSMA coding is carried out on the information at the transmitting end of the base station, and communication and navigation integrated signals are generated and comprise a public flow and a private flow; the transmitting end of the base station performs distribution according to the power of the public flow and the private flow, and broadcasts the communication and navigation integrated signal to the user side; the user side receives the communication and navigation integrated signal to obtain required positioning information; the user side feeds back channel state information in the private stream in the received communication and navigation integrated signal to the base station, and the base station adjusts the power distribution proportion of the public stream and the private stream according to the fed back CSI information and broadcasts the communication and navigation integrated signal to the corresponding user side again; and the user side demodulates the received corresponding private stream to obtain the required communication information.

The invention relates to the field of communication, and provides a visible light communication method for a display and MIMO system, and the method comprises the steps: obtaining to-be-displayed content and to-be-transmitted data; according to the number S of pixels, needing to be lightened at a single time, of the to-be-displayed content, the QAM order of a channel corresponding to each pixel is determined; dividing the data to be transmitted into P groups of transmission data, so that each group of transmission data is transmitted through one channel; respectively performing QAM mapping on the P groups of transmission data according to the QAM order to generate P groups of QAM code elements; respectively carrying out OFDM modulation on the P groups of QAM code elements to generate P modulation signals; and driving the micro-LED array to synchronously transmit P paths of optical signals and perform communication based on the P modulation signals. According to the invention, the advantages of MIMO and micro-LED are combined, the spectrum utilization efficiency is improved on the basis of improving the modulation bandwidth, and the communication rate of a visible light communication system can be maximized.

The invention discloses a single-mode optical fiber communication control system and method based on multi-carrier communication, and relates to the technical field of optical fiber communication. The system comprises a historical data acquisition and signal quality evaluation module, a data feature extraction and deviation analysis module, a multi-carrier transmission model construction and simulation module, a real-time transmission and quality monitoring module and an optimization result output and adjustment prompt module. The historical data acquisition and signal quality evaluation module acquires historical transmission data and calculates a signal quality score; the data feature extraction and deviation analysis module extracts feature vectors and defines an optimization target; the multi-carrier transmission model construction and simulation module constructs a multi-carrier transmission model according to the template data, simulates to-be-optimized data transmission and generates an optimization strategy; the real-time transmission and quality monitoring module transmits to-be-optimized data in real time according to an optimization strategy; and the optimization result output and adjustment prompt module compares the scores of the real-time data and the to-be-optimized data and outputs prompt information.

The invention discloses a miniaturized and low-delay multi-communication-link fusion radio frequency circuit, which comprises five communication links of LORA / NBIOT / GNSS / WIFI / BLE, and the communication links with different physical characteristics are respectively constructed by corresponding amplification circuits, radio frequency switching circuits, filtering isolation circuits and multi-frequency transceiving antennas. The fusion of multiple communication links adopts two architecture modes of a power amplifier, a switch module and an antenna and a power amplifier, a switch module, a filter, a duplexer and an antenna. Compared with the prior art, the method has the advantages that fusion transmission of multiple communication systems can be achieved, the simplified physical channel building mode can effectively avoid multi-dimensional communication conflicts, network time delay is reduced, and higher system capacity and spectrum utilization efficiency are obtained.

The application discloses a kind of full duplex antennas based on slot coupling differential feed, including two pairs of butterfly dipole antennas, first dielectric plate, four groups of vertically placed signal transmission lines, metal floor, second dielectric plate, two U-shaped feed networks and third dielectric plate;The application is placed on the upper surface and lower surface of first dielectric plate by setting two pairs of butterfly dipole antennas, to radiate horizontal polarization and vertical polarization wave, in order to generate differential signal, four T-shaped slots with the same size are etched on the metal floor, then the differential signal at T-shaped slot is transmitted to the feed position of dipole antenna by four groups of vertically placed transmission lines, and the two U-shaped feed networks are placed vertically without dielectric layer, so as to obtain larger port isolation, which can be applied to simultaneous same frequency full duplex communication system, and wireless signals can be transmitted and received simultaneously at the same frequency, thereby improving spectrum utilization efficiency.

The present invention discloses a method and system for air-ground collaborative target detection driven by cognitive semantic communication, including: image multi-scale semantic feature extraction; multi-scale semantic feature compression encoding; channel semantic transmission; multi-scale semantic feature decoding and reconstruction; knowledge graph node embedding; knowledge graph driven target detection; input aerial image target detection training set to train the air-ground collaborative target detection model driven by cognitive semantic communication; input aerial image target detection test set to verify the task accuracy and performance of the air-ground collaborative target detection model driven by cognitive semantic communication. The present invention alleviates the problem of scarce computing resources for aerial equipment, improves the robustness of the system in a high compression rate and low signal-to-noise ratio wireless communication environment, introduces the prior information of the knowledge graph to assist the communication process and target detection, improves the system's global cognition of the detected image, and improves the target detection accuracy.

The invention discloses a partial bandwidth BWP switching method and device, and the method comprises the steps: configuring a dedicated BWP resource and activating any BWP when there is a UE access service request, the BWP processing uplink and downlink communication of the UE, and the dedicated BWP resource comprising a plurality of configured BWPs; respectively calculating PRB utilization rates of the activated BWP for processing uplink communication and downlink communication of the UE every set duration; the method comprises the steps of determining a target bandwidth value of an activated BWP according to PRB utilization rates of uplink communication and downlink communication and a utilization rate threshold value, storing the non-activated BWP to obtain a target BWP according to the target bandwidth value of the activated BWP and a configured bandwidth value of the non-activated BWP, and performing BWP switching according to the target BWP. According to the scheme, the scheduling resource of the BWP can be changed in real time according to the user demand, so that the bandwidth resource is efficiently utilized, and the spectrum utilization efficiency of the data sharing channel can also be improved.

The invention provides a conduction fusion signal design method based on 5G non-ground network downlink broadcast. The method comprises the following steps: determining navigation message data based on a low-orbit forecast orbit generated by precise orbit determination and Beidou enhancement parameters; generating a navigation message block based on the navigation message data; adding an idle symbol behind the physical broadcast channel of the synchronization signal block; and adding a navigation message block on the idle symbol. According to the embodiment of the invention, the navigation message block used for positioning the terminal is added in the downlink broadcast signal in the broadcast signals, so that the dual functions of navigation and communication are realized under the same spectrum resource, the spectrum utilization efficiency is improved, the pseudo-range can be measured through the broadcast signals, the terminal can be positioned in the synchronization stage, and the user experience is improved. The positioning complexity is reduced, and a tedious access process is avoided.

The invention discloses a hybrid multiple access method suitable for a low-orbit satellite Internet of Things, and the method comprises the steps: firstly, enabling a low-orbit satellite and an unmanned plane to obtain the position information of ground Internet of Things equipment; secondly, on the basis of the obtained position information, calculating a position correlation coefficient between the devices, and performing grouping optimization on the multiple pieces of non-direct-transmission Internet of Things devices; then, the unmanned aerial vehicle relay serves one non-direct transmission device group in each time slot by adopting a method of combining polling scheduling with a beam forming technology based on position information; and finally, a plurality of direct transmission Internet of Things devices share spectrum resources with the unmanned aerial vehicle, a multi-beam non-orthogonal multiple access technology based on weighted beam superposition is adopted to access a satellite network at the same time, and the hybrid multiple access method provided by the invention can make full use of resources such as a time domain, a space domain and a power domain. The heterogeneous flexible access requirements of different types of Internet of Things equipment are effectively met, and the method has the advantage of low algorithm complexity, so that the system overhead is remarkably reduced, and the method is suitable for a low-orbit satellite Internet of Things access scene.

The invention discloses an optical signal generation method based on sparse orthogonal space-time code multi-dimensional modulation. The method comprises the following steps: randomly dividing original data to be sent into first data, second data, third data and fourth data; respectively performing codebook constellation mapping on the first data, the second data, the third data and the fourth data to obtain a first codebook mapping signal, a second codebook mapping signal, a third codebook mapping signal and a fourth codebook mapping signal; performing sparse code division multiplexing on the first codebook mapping signal, the second codebook mapping signal, the third codebook mapping signal and the fourth codebook mapping signal to obtain a first sparse code signal, a second sparse code signal, a third sparse code signal and a fourth sparse code signal; performing orthogonal space-time block coding modulation according to the first sparse code signal, the second sparse code signal, the third sparse code signal and the fourth sparse code signal to generate a modulation signal; and inputting the modulation signal into a hollow-core optical fiber channel for transmission.

The invention relates to the technical field of 5G communication modules, in particular to a 5G communication module integrated antenna system and a use method thereof.The 5G communication module integrated antenna system comprises a 5G communication module with a built-in signal filter and a built-in power filter; an integrated antenna system with conductive foam wrapped outside an antenna, an industrial control system and a sensor with a shell adopting a conductive coating for electromagnetic shielding, an anti-interference element with a common mode choke added in a signal line and a power line, and a frequency spectrum management module for dynamically adjusting a 5G communication frequency band and avoiding interference; according to the 5G communication module integrated antenna system, the problem of electromagnetic interference of a 5G communication module integrated antenna system to nearby industrial control systems and sensors in application of the industrial Internet of Things can be effectively solved, and the service life of the 5G communication module integrated antenna system is prolonged. High-speed 5G network connection of industrial Internet of Things equipment is realized, and industrial automation and remote monitoring are supported.

This invention discloses a physical layer secure communication method to counter eavesdropping attacks. The communication process consists of two time slots. In the first time slot, a roadside base station selects an antenna to transmit a NOMA signal, while nearby and distant user vehicles simultaneously transmit artificial noise to interfere with the eavesdropping user vehicle. In the second time slot, the nearby user vehicle acts as a relay node, XORing the decoded distant user message with the artificial noise signal generated in the first time slot, and then sending the mixed signal to the distant user vehicle. The distant user vehicle simultaneously transmits artificial noise to interfere with the eavesdropping user. In the vehicle-to-everything (V2X) network, the nearby user, the distant user, and the eavesdropping user calculate their respective required signal-to-interference-plus-noise ratio (SIR) based on the received signals, and calculate the system user's interruption probability and interception probability. Compared with existing secure communication schemes in V2X networks, the secure communication scheme of this invention can significantly enhance the physical layer security of nearby and distant user vehicles.

This invention discloses a continuous signal processing method, system, and storage medium suitable for satellite communication. The method acquires a continuously received signal; performs coarse frequency offset estimation and compensation on the continuously received signal to obtain a frequency offset compensated signal; performs symbol timing recovery on the frequency offset compensated signal to obtain an optimal sampling sequence; performs modulation identification on the optimal sampling sequence to determine the modulation type of the optimal sampling sequence; combines the modulation type to perform fine frequency offset and carrier phase estimation compensation on the optimal sampling sequence to obtain a phase compensated sequence; performs multi-path candidate phase rotation and channel decoding decision on the phase compensated sequence, eliminates phase ambiguity using decoding convergence features, and obtains decoded data; and filters the decoded data based on a preset frame boundary flag to output valid service data. This invention can reduce physical layer frame structure overhead and improve spectrum utilization efficiency and link carrying capacity.