17 results about "Communication system design" patented technology

The invention discloses a digital aeronautical communication system design based on a cellular-free network architecture, which belongs to the technical field of aeronautical communication and comprises an aeronautical communication system and a communication service execution module. The aeronautical communication system comprises a network infrastructure and a communication link layer and is responsible for providing underlying physical connection and transmission environment support. The communication service execution module covers a network protocol and information interaction and task execution process; the network infrastructure adopts distributed AP topology planning, airport and route area APs are deployed in a differentiated manner, and parameters are dynamically adjusted in combination with a three-dimensional coverage optimization model; and software and hardware modules comprise ground APs and airborne terminals, so that the problems caused by high-speed movement are solved. The communication link layer carries out multi-dimensional channel modeling, and LDPC code coding and dynamic cluster generation are adopted. The working process comprises the steps of initialization, cluster construction, state monitoring and the like, stable communication in the whole flight process is achieved, and the aviation communication efficiency and safety are improved.

The application discloses a communication system design method of a dynamic linked reconfigurable holographic surface and belongs to the wireless communication technical field.The application realizes the method as follows: 1, a single-source transmitter and a receiver are constructed, the transmitter is provided with a precoder, a switch selection link and a reconfigurable holographic surface, and the receiver is provided with a combiner, a switch selection link and a reconfigurable holographic surface; 2, a digital beam forming signal is input to the holographic antenna through a feed source selected by the switch selection link to form a transmitting signal; 3, a channel matrix is acquired, the feed source position is selected by utilizing an interactive entropy iteration, digital beam forming is realized through power distribution, the RHS unit excitation is realized by utilizing an element-by-element iteration, and the beam forming of the overall signal is completed; 4, a receiving signal is acquired by the receiver through a RHS combiner and a digital signal combiner mode; compared with the prior art, the application improves the communication transmission rate of the reconfigurable holographic surface in the random channel transformation scene.

The present invention relates to an assistive communication system designed for nonverbal individuals to effectively communicate their needs, emotions, and requests to caregivers. The system comprises a wearable user communication device and a wirelessly connected caregiver band. The user device features a plurality of buttons, each representing a communication category, and includes audio output, vibration feedback, and LED illumination upon activation. The caregiver band receives signals from the user device and provides haptic, visual, and auditory alerts to notify the caregiver of the nonverbal individual's request. The system supports customizable touchscreen buttons, adjustable layouts, and multi-language options. The invention provides real-time, intuitive communication, enhancing the independence and safety of nonverbal users while facilitating prompt caregiver responses.

The invention discloses a wireless energy supply OAM communication system design and optimization method based on a time switching protocol, and relates to the technical field of communication, and the method comprises the steps: obtaining array configuration data of a base station and energy limited equipment, calculating channel parameters, and determining power distribution; generating a modulation matrix according to the OAM mode order, and dividing a time period into an energy transmission time period and an information transmission time period; energy acquisition data and link capacity are calculated, an optimal time switching factor is determined by adopting a convex optimization method by taking maximization of uplink total capacity as a target under the condition that the constraint of a service quality threshold value is met, and finally, a base station is controlled to complete cooperative transmission of energy and information; the method has the advantages that through deep fusion of OAM mode multiplexing and TS protocols, dynamic optimal balance of energy transmission and information transmission is achieved on the premise that the service quality is guaranteed, and the spectrum efficiency and the energy efficiency of a communication system are improved.

The application discloses a kind of based on the design method of security wireless communication system of polarization modulation strategy, introduces camouflage image in the process of encoding and decoding and utilizes polarization mask key to encrypt target information, and adopts polarization modulation strategy to send the camouflage image containing encryption information and polarization mask key simultaneously;Target user extracts real target information from the camouflage information received by corresponding decoding strategy, while eavesdropper cannot obtain accurate target information;The method can simultaneously encrypt independent wireless communication in multiple channels with different polarization encoding strategies;By using different polarization mask keys and polarization encoding strategies, the security of the system can be further improved. The encryption scheme proposed integrates computation algorithm encryption and physical layer encryption, has the advantages of high security, large channel capacity, strong camouflage ability, etc., and is expected to play an important role in future secure wireless communication.

The invention discloses a service flow processing method, a communication flow processing method and a computer program product. The method relates to the field of communication system design in the field of cloud communication, and comprises the following steps: in response to a received processing instruction of a first service process, obtaining first configuration information of the first service process, the first configuration information comprising processing steps of a plurality of functional components in the first service process; determining a first running server which is successfully started in the running server cluster; and based on the first configuration information, processing the plurality of functional components in the first service process through the first operation server. According to the method and the device, the technical problem of inconsistent states of the service process in the running server cluster is solved.

This invention discloses a comprehensive evaluation method for wireless channel delay spread based on a dual correlation test in the field of wireless communication and channel modeling technology. This method includes the following steps: data acquisition and preprocessing, correlation calculation, data merging and trend analysis, and result presentation and decision-making basis. By combining Pearson and Spearman correlation coefficients, this method analyzes the impact of physical environment parameters on RMS_DS under LOS and NLOS conditions, improving the comprehensiveness and accuracy of correlation analysis and providing a reliable basis for wireless communication system design and optimization.

The application discloses a kind of multi-robot intelligent metasurface auxiliary lossy communication system optimization methods, first, under the framework of relevant Rayleigh channel, the spatial correlation of base station-IRS-user link is jointly modeled, the coupling channel matrix between the IRS reflecting unit carried by any robot is constructed using multidimensional correlated complex Gaussian variable, the distortion constraint is converted into SNR threshold using Shannon lossy theorem, and the outage probability closed form is derived;Second, the joint optimization is modeled as multi-agent Markov decision process MAMDP, and the IRS carried by each robot is an independent agent, which is centrally trained and distributedly executed using CTDE-TD3 algorithm;Finally, a low-complexity outage lower bound is given to realize real-time prediction.The application can realize multi-IRS cooperative regulation with low complexity and high robustness, significantly reduce the system outage probability, and provide theoretical support and practical tools for AI-oriented 6G communication system design and real-time optimization.

It discloses a communication system design method based on an intelligent omni-surface, comprising step 1: constructing an optimization problem by minimizing a total power consumption of the communication system as an objective function, the communication system being a communication system based on an intelligent omni-surface; step 2: setting a constraint condition for the optimization problem constructed in the step 1, the constraint condition comprising a minimum rate constraint of a user, a phase shift constraint of the intelligent omni-surface and a length constraint of an allocated time slot; and step 3: solving the optimization problem after setting with the constraint condition to obtain solution for minimizing the total power consumption of the system. When lowest rate requirements of all users are met, the method reduces the total power consumption of the system and realizes omnidirectional coverage of a communication area, and has a good application value.

The invention discloses an air-to-ground communication channel modeling method based on a random trajectory of an unmanned aerial vehicle, and the method comprises the steps: generating the random trajectory of the unmanned aerial vehicle through employing a smooth steering random movement model; a grid-based large-scale parameter generation method is adopted to generate large-scale parameters, and then small-scale parameters such as time delay, power, departure azimuth angle, arrival azimuth angle, departure pitch angle, arrival pitch angle and cross polarization ratio are generated; performing space-time evolution analysis of the cluster; calculating a channel impulse response CIR and a channel matrix; simulating and calculating a space-time correlation function STCF, a root-mean-square delay spread RMS DS, a stationary time interval SI and a channel capacity, and judging the influence of different unmanned aerial vehicle trajectories on a channel. Based on the random trajectory of the unmanned aerial vehicle, the influence of different unmanned aerial vehicle trajectories on the channel is considered, the characteristics of the spatial domain and the time domain of the channel are comprehensively analyzed, and the method has important significance for guiding the design of an air-to-ground communication system of the unmanned aerial vehicle.

The application provides a code word mapping method, which can improve the decoding performance and energy allocation fairness of a communication system designed by combining a multi-ary channel coding technology and an SCMA technology. The method comprises the following steps: obtaining a first mapping relationship of at least one user on at least two resource blocks (S301), determining a second mapping relationship of the at least one user on the at least two resource blocks (S302), and determining a third mapping relationship of the at least one user on the at least two resource blocks according to a peak-to-average power ratio corresponding to the second mapping relationship of the at least one user on the at least two resource blocks (S303). The first mapping relationship of each user on each resource block is composed of at least two corresponding relationships, and each corresponding relationship is a corresponding relationship between a sparse code division multiple access (SCMA) code word and a multi-ary channel coding symbol. The criterion value is used to measure the possibility of the SCMA code word being decoded incorrectly and the multi-ary channel coding symbol being decoded incorrectly. The peak-to-average power ratio is a peak-to-average power ratio of the energy of the SCMA code word after superposition on the at least two resource blocks.

This application provides a P-NOMA-enabled design method for a PASS-D2D communication system, relating to the field of communication system technology. This application extends PASS to a PASS-D2D cooperative framework, designs a two-timeslot transmission protocol, and introduces MRC and LC merging strategies respectively. The closed-form solution for the ergodic rate of each scheme is derived, and the accuracy of the analytical results is verified through simulation. D2D cooperation can effectively alleviate the bottleneck of weak users and improve system throughput. The combination of P-NOMA and cooperative merging can further release gains, with P-LC typically performing better in interference-sensitive areas. Power allocation, user spacing, and overlap ratio jointly determine the upper limit of cooperative gains and the interference-dominant range. Reasonably controlling the near-end overlap ratio helps avoid rate degradation caused by excessive interference coupling. In summary, this application provides an interpretable theoretical basis and numerical support for the parameter design and deployment optimization of PASS and its cooperative extension systems.

The application discloses a kind of anisotropic compressible turbulent light beam transmission scintillation index simulation method, belong to optical transmission and turbulent effect analysis technical field.The present application is aimed at the problems existing in prior art, by introducing anisotropic factor to characterize the distortion degree of turbulent vortex perpendicular to the propagation direction, based on Boltzmann factor equation modified compressible turbulent spectrum to construct anisotropic refractive index power spectrum;Weak fluctuation and strong fluctuation condition are established by Rytov theory and modified Rytov theory respectively to establish the scintillation index analytical model of Gaussian beam transmission;The influence law of each parameter on scintillation index is analyzed by numerical simulation.The application can accurately describe the light beam transmission characteristics in anisotropic compressible turbulent flow, reveals the regulation of anisotropic factor in weak fluctuation condition to inhibit scintillation and in strong fluctuation condition to delay scintillation saturation, and provides a theoretical basis for optical imaging and communication system design of high-speed target in compressible turbulent environment.

The application relates to the technical field of wireless communication, in particular to a smart reflecting surface assisted multi-cell cooperation distributed communication system design method. The technical scheme of the application is that a message passing algorithm based on Bayesian estimation is used for precoding processing of a transmitting end and a smart reflecting surface, so that the bottleneck of low coverage capacity and low edge user spectrum efficiency of an existing multi-cell cellular network is broken through.

The invention claims to protect an unmanned aerial vehicle air-ground urban environment channel modeling and prediction method based on measured data, and aims to solve the problems that unmanned aerial vehicle air-ground channel modeling is disjointed with an actual scene, the path loss prediction precision is low, and integrated system support is lacked. And efficient and accurate modeling and prediction of the air-ground channel of the unmanned aerial vehicle in an urban environment are realized. The method comprises the following steps: step 1), constructing an air-ground channel measurement system, carrying out urban environment multi-band actual measurement, and constructing a channel data set; step 2), carrying out statistical channel modeling based on measured data, and analyzing large-scale and small-scale fading characteristics; step 3), designing a path loss prediction model PBANET based on deep learning; the unmanned aerial vehicle air-to-ground channel modeling and predicting method can be applied to communication system design and optimization of scenes such as unmanned aerial vehicle disaster rescue and emergency communication, compared with an unmanned aerial vehicle air-to-ground channel modeling method of CN120090745B, the unmanned aerial vehicle air-to-ground channel modeling and predicting method is more suitable for urban air-to-ground communication scenes, and modeling precision and engineering practicability are remarkably improved.

The disclosure relates to a communication technique for converging Internet of things technology with 5G communication systems designed to support a higher data transfer rate beyond 4G systems, and a system therefor. The disclosure may be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail business, security and safety-related services, etc.) on the basis of 5G communication technology and IoT-related technology. The disclosure provides a method and a device for preventing a data decompression error in a next-generation mobile communication system.

The invention relates to the technical field of simulation communication, in particular to a multi-computer collaborative air refueling simulation communication system based on an Ethernet UDP (User Datagram Protocol). The corresponding system communication comprises the following steps: step 1, constructing an Ethernet communication network and setting nodes; 2, initializing a UDP (User Datagram Protocol) and configuring node parameters; 3, configuring a simulation subsystem and a data transmission function; step 4, realizing UDP multicast data transmission; 5, a data verification and feedback mechanism; 6, subsystem adjustment and data synchronization are carried out; and 7, displaying and processing simulation data in real time. The invention aims to provide a multi-computer collaborative air refueling simulation communication system design method based on an Ethernet UDP (User Datagram Protocol), and aims to improve the data transmission efficiency and real-time performance between an oil receiver and an air refueling machine by optimizing the communication architecture of an existing air refueling simulation platform.