130results about How to "Improve spectrum utilization" patented technology

The invention provides a time division duplex multi-carrier synchronous transmission method based on 5G, which is used for solving the problems of inflexible carrier time slot allocation and inaccurate time delay compensation in synchronous transmission. By dynamically adjusting time slot allocation and working frequency bands of carriers in a network control center, the method optimizes network loads and reduces cross interference; the time delay of each carrier is compensated in real time by adopting a synchronous signal calibration algorithm, so that strict alignment of transmission time slots is ensured; the transmitting end dynamically adjusts the transmitting power according to link state information, and the receiving end reduces interference and signal attenuation through a multi-carrier cooperative interference management and multi-path delay compensation mechanism; and a receiving end performs joint decoding based on channel estimation and integrates demodulation signals of all carriers, so that the transmission efficiency and the signal quality of the 5G network are improved. The method is suitable for a base station system and a base station and repeater extension coverage system, and is especially suitable for a distributed wireless system including an optical fiber remote distributed system, a cable remote frequency shift repeater system and the like.

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 discloses a mode selection method and device for a D2D auxiliary power internet of things, and the method comprises the steps: building a graph neural network model, modeling the interference relation between D2D user pairs and cellular users in a power network and channels into a graph structure in a graph building module, coding the node features and edge features in the graph structure into feature vectors, and carrying out the coding of the feature vectors, in a graph convolution module, a graph convolution neural network is utilized to perform feature extraction on the feature vectors to obtain node hidden states including D2D user pair nodes and cellular user nodes, and in a classification decision module, the node hidden states are input into a classifier to calculate channel selection variables so as to determine a selected channel mode; and training the graph neural network model and then deploying and applying. According to the method, the pattern selection of D2D communication is optimized and the system throughput is maximized by using the graph neural network, so that the calculation complexity is further reduced, the calculation speed is improved, and the overall performance of the communication system can be greatly improved.

The invention discloses a base station joint multi-band resource allocation method and device, a medium and a product. The method comprises the following steps: acquiring spectrum state data of each band; determining demand data of user communication according to the acquired user communication data; and performing global optimization by adopting a preset optimization model according to the spectrum state data and the demand data, and determining a frequency band resource allocation strategy. The scheme of the invention can improve the spectrum utilization rate, improve the network throughput and ensure the service quality.

The invention relates to the technical field of radio frequency communication control, and discloses a beam forming accurate control method, which comprises the following steps of: acquiring a business service quality parameter and frequency domain channel information of a user; generating a user priority sequence; constructing a three-dimensional resource scheduling matrix; outputting a beam forming coefficient matrix and a power distribution result; and performing beam precise closed-loop regulation and control of the radio frequency array. The technical problems in the prior art that real-time resource scheduling and fine beam regulation and control are difficult to carry out in combination with user QoS dynamic changes, and stable beam forming control is difficult to realize especially in a scene that a chip supporting large-scale user concurrency needs to dynamically adjust beams according to QoS requirements are solved. According to the invention, the dynamic resource scheduling matrix fused with power perception is constructed, and a multi-dimensional feedback calibration mechanism based on amplitude-phase perturbation is combined, so that high-precision beam control is realized, and the communication stability and the regulation and control flexibility are improved.

The invention discloses a data acquisition method based on edge computing and satellite communication technologies, and relates to the technical field of communication data processing. The method comprises the following steps: constructing an edge cloud service platform by fusing cloud computing, edge computing and 5G communication technologies; optimizing a satellite communication protocol, a modulation and demodulation technology and a signal processing technology, and performing satellite communication data transmission; and intelligent data acquisition and processing are carried out. According to the invention, by fusing the high-performance calculation and storage capability of 5G edge cloud and the wide coverage advantage of satellite communication, more efficient, real-time and wide-coverage data acquisition is realized; the technical problems of high propagation delay, bandwidth limitation, expensive spectrum resources, path loss, multipath effect, Doppler frequency shift, orbit parameter uncertainty, edge computing resource limitation and the like encountered in data acquisition of the 5G edge cloud and satellite communication technology are effectively solved.

The invention relates to the technical field of satellite communication, and discloses a communication method and system for a long-voyage ship based on L frequency band communication, and the method comprises the steps: recognizing the navigation environment and communication demands of the long-voyage ship, recognizing the satellite signals of the long-voyage ship and a communication end through recognizing the frequency band characteristics of a communication frequency band, and carrying out the communication of the long-voyage ship; a signal tracking network of satellite signals is set, signal parameters of the satellite signals are monitored in real time according to the signal tracking network, a quality feedback mechanism of the signal parameters is set, the current signal quality grade is identified, and the signal quality requirements of the long-voyage ship and the communication end are identified based on the current signal quality grade; the method comprises the following steps: setting a multi-beam switching mechanism pointing to beams and a signal locking network of satellite signals, setting a confidential path for transmitting data, and generating a communication result of a long-voyage ship and a communication end in combination with the multi-beam switching mechanism, the signal locking network and the confidential path; according to the invention, the stability and safety of signal transmission can be enhanced, and the communication quality of the long-voyage ship is improved.

The invention discloses a dynamic spectrum sharing method based on a joint neural network, and belongs to the field of spectrum prediction methods. Aiming at the problems of low utilization rate and lack of spectrum resources and how to obtain the spectrum resources, the invention provides a dynamic spectrum sharing method based on a joint neural network, and the method comprises the steps: improving an LSTM recurrent neural network, and extracting the features of time sequence data; designing a spectrum sensing model based on the combination of a long and short term memory network LSTM and a recurrent neural network RNN; designing a time sequence prediction model based on a BP neural network and a GRNN neural network; and the accuracy of spectrum prediction is improved by using data detected by spectrum sensing, so that the spectrum utilization rate is enhanced, and the dynamic spectrum access is better completed. According to the method, the long-standing dependency problem in the RNN model is solved, and the risk of historical information loss caused by long distance is weakened, so that the accuracy of a trend prediction result of a future spectrum is improved.

The invention relates to the technical field of networking methods, in particular to an ad hoc network dynamic networking method and system based on an MAC layer, and the method comprises the steps: obtaining the topological relation information of each node in a network; obtaining distance information between the nodes; generating a topology sensing matrix based on the topological relation information; calculating a priority matrix according to the topology sensing matrix; evaluating the service capability of each node based on the priority matrix and the distance information; calculating the reliability of each node according to the service capability; based on the reliability, time slots are distributed for all the nodes; generating a routing optimization matrix according to the priority matrix, the reliability and the distance information; the priority, the service capability, the reliability, the time slot allocation result and the routing optimization information of each node are output, and by introducing an innovative priority matrix calculation method, the direct connection relationship of the nodes is considered, and the positions and the influence of the nodes in the whole network are captured, so that the network resource allocation is more reasonable, and the routing optimization efficiency is improved. And the overall throughput of the network is obviously improved.

The present disclosure relates to a method and system for determining the transmitter state of a terminal, as well as a base station and a terminal, and relates to the field of communication technology. The method of the present disclosure includes: the base station sends transmitter state configuration information to the terminal, wherein the frequency band for uplink transmission of the terminal's transmitter is dynamically switched between frequency bands greater than two frequency bands, and the transmitter state configuration information is used to: after the frequency band for uplink transmission of the terminal's transmitter is switched, if the terminal's transmitter optional state is not unique, indicate the transmitter state of the terminal after switching; the base station determines the transmitter state of the terminal after switching according to the transmitter state configuration information.

The invention discloses a multi-modal vortex electromagnetic wave-based flux-inductance fusion system and an application method, and relates to the technical field of wireless communication, and the specific steps are as follows: the multi-modal vortex electromagnetic wave-based flux-inductance fusion system obtains multi-modal vortex electromagnetic waves; modulating communication information on the vortex electromagnetic wave in the first mode, and transmitting multiple paths of communication information at the same time and at the same frequency; and carrying out target detection and sensing imaging on the vortex electromagnetic wave in the second mode, and obtaining sensing information at the same time. Communication information and sensing information can be modulated on different orbital angular momentum modes to achieve communication and inductance fusion, efficient utilization of hardware is achieved, vortex electromagnetic wave modulation is introduced, a natural orthogonal channel is provided for a sensing loop and a communication link in the communication and inductance fusion system, and the communication and inductance fusion efficiency is improved. And modulation and demodulation of the information are equivalent to inverse discrete Fourier transform operation, so that the signal processing difficulty is greatly reduced, and unification of communication sensing information processing and hardware structure design is realized.

The invention relates to a self-adaptive CKF phase noise compensation method in a coherent light OFDM system. The method comprises the following steps of: estimating a phase noise value of each OFDM symbol at a signal receiving end through known pilot frequency information, performing first phase noise fitting by using a second-order Hermite interpolation function, performing pre-judgment and secondary symbol partitioning on a compensated signal, performing second phase noise fitting by using an updated second-order Hermite interpolation function, and performing phase noise fitting on the compensated signal. And finally, the residual phase noise is suppressed by using the characteristics that the adaptive CKF can adaptively update the process noise and reduce the estimation error. Simulation results show that the method can effectively compensate CPE and ICI phase noise, meanwhile, the tolerance of the CO-OFDM system to the laser line width is also improved, and the performance of the system is improved.

The invention relates to the technical field of optical networks, and provides a metropolitan area-access all-optical convergence network system based on a digital subcarrier multiplexing technology. The system comprises a digital subcarrier-based continuous signal generation module in a metropolitan area node, a digital subcarrier-based burst signal generation module in an access network optical network unit, and a digital subcarrier beam splitting / combining module in a metropolitan area-access all-optical fusion node, the digital subcarrier-based west / east continuous signal receiving and processing module is arranged in the metropolitan area node; and the burst signal receiving and processing module is arranged in the access network optical network unit. All-optical fusion is achieved in a metropolitan area network and an access network system through the digital subcarrier multiplexing technology, delay and jitter caused by optical-electric-optical conversion can be effectively avoided, and precious wavelength resources are saved. In addition, different subcarriers are endowed with different functions, so that not only is bidirectional high-speed transmission realized, but also the flexibility of the network architecture is greatly improved.

The invention relates to the technical field of communication, and particularly discloses an ad hoc network communication method, device and equipment and a storage medium, and the ad hoc network communication method comprises the steps: obtaining spectrum sensing information; performing dynamic spectrum resource allocation on each communication node in the ad hoc network based on the spectrum sensing information; performing multi-channel joint scheduling according to the dynamic spectrum resource allocation result; constructing an alternative path according to a multi-channel joint scheduling result and performing path quality evaluation; and performing segmentation and multi-path parallel transmission on a to-be-transmitted data packet based on a path quality evaluation result. According to the ad hoc network communication method provided by the embodiment of the invention, the idle and tension of the spectrum is avoided through the dynamic spectrum resource allocation basis real-time sensing information, the spectrum utilization rate is remarkably improved, and the problem of unbalanced spectrum resource allocation in the prior art is solved; and multi-channel joint scheduling is based on a distribution result, so that resource configuration can be optimized, efficient communication of each node is ensured, and the overall spectrum use efficiency is further improved.

The invention relates to the field of millimeter wave communication, in particular to a data transmission method and device based on a rate division multiple access technology, and the method comprises the following steps: inputting a bit information stream at a transmitter; performing block processing on the bit information stream; encoding the data stream subjected to the block processing; performing symbol mapping on the encoded data stream; pre-coding the data stream after symbol mapping to form a transmitting signal; a data stream is transmitted through a channel after a signal is transmitted through a transmitter, and a receiver receives the transmitted information stream, performs interference elimination on the data stream and obtains public information and private information of the information stream; and combining the public information stream and the private information stream to obtain a transmitted bit information stream. According to the invention, the bit data stream is split and combined at the transmitter, the frequency spectrum utilization rate in the information transmission process is increased, and the information transmission rate is improved.

The invention discloses an encryption communication method and system based on biological genetic coding chaos driving, and the method comprises the steps: receiving an original bit stream and an initial secret key, and generating a chaos sequence group according to the initial secret key through two hyperchaos models; performing DNA coding encryption on the original bit stream by using the chaos sequence to obtain a gene transmission sequence, and performing DNA decoding on the gene transmission sequence to obtain a transmission bit stream; performing constellation mapping on the transmission bit stream to obtain a constellation diagram, and performing subcarrier scrambling, symbol scrambling and constellation rotation on the constellation diagram according to the chaos sequence; performing OCDM modulation on the constellation diagram through an inverse discrete Fresnel transformation matrix to obtain a transmission signal; hiding the initial key in a frame header of a transmission signal, and sending the transmission signal to a receiver through a transmitter; according to the invention, multi-layer encryption of the OCDM signal and dynamic secret key follow-up transmission are realized.

The invention discloses a two-way communication transmission method based on full-duplex communication, which realizes efficient self-interference elimination in an analog domain and a digital domain by deploying antenna arrays at a transmitting end and a receiving end and combining a self-adaptive beam forming technology and a self-adaptive filter, and realizes synchronous two-way transmission by adopting an orthogonal frequency division multiplexing technology. The spectrum utilization rate and the communication quality are improved by detecting available channels and optimal channel allocation in real time, the weight value is intelligently calculated, the resource allocation is optimized and the priority transmission of key data is ensured according to the importance, the delay sensitivity and the network state of the data packet; a fuzzy control algorithm is used for evaluating the signal-to-noise ratio and the bit error rate of a communication signal in real time, the transmitting power and channel selection are dynamically adjusted according to an evaluation result, adaptive optimization of communication parameters is achieved, and the defects of an existing full-duplex communication system in the aspects of self-interference elimination, channel allocation, data scheduling and communication parameter optimization are effectively overcome.

The invention discloses a frequency multiplexing implementation method of a ground-air broadband communication system, which comprises the following steps: setting a plurality of multiplexing frequencies for aggregating downlink subcarriers for the ground-air broadband communication system, the plurality of multiplexing frequencies multiplexing the frequency of a ground operator system; arranging a ground-air system base station which is spatially isolated from a ground same-frequency network base station of the ground operator system for the ground-air broadband communication system along an air route according to the plurality of multiplexing frequencies; according to the coverage condition of a plurality of multiplexing frequencies in the ground operator system, selecting an actual multiplexing frequency for the laid ground-air system base station from the plurality of multiplexing frequencies; and realizing ground-to-air communication of the ground-to-air broadband communication system by using the actual multiplexing frequency of the ground-to-air system base station. According to the frequency multiplexing technology, the inter-system co-frequency interference caused by frequency multiplexing can be reduced, and the design complexity and the construction cost are low.

The application provides an AM-PM distortion calibration method applied to an UWB transmitter and belongs to the field of UWB communication. The method adds a sampling resistor between a linear voltage stabilizing power supply LDO and a digital power amplifier DPA driving stage of the UWB transmitter using a digital power amplifier, so as to simulate the instantaneous change of the power supply voltage of the DPA driving stage when the UWB pulse is transmitted; an adjustable delay unit is added between a carrier input port LO and the DPA driving stage; the continuous sine wave is transmitted, the phase information under each digital baseband amplitude control word is collected to form original data of the AM-PM distortion of the UWB transmitter, the digital baseband output AM-PM control word is used to control the adjustable delay unit to output the phase which is opposite to the original data and has the same size, so that the phase predistortion of the transmitted UWB pulse is realized, and the AM-PM distortion calibration is completed. The application has the advantages of simple implementation and strong compensation capacity.

The application belongs to the technical field of radar signal processing and imaging, and provides a differential coupling single-frequency time-varying low-quantization imaging method, which comprises receiving a SAR echo signal, constructing a single-frequency time-varying threshold signal, single-bit quantization processing of a reference channel, single-bit quantization processing of a phase shift channel, double-channel data fusion and harmonic cancellation, and imaging processing based on a synthesized signal. The application effectively reduces the quantization noise base and improves the detection capability of a SAR system on weak targets under the premise of not significantly increasing the hardware cost.

This invention discloses an HPAM-DMT-NOMA method based on time-domain preprocessing, comprising: At the transmitting end, PAM modulation is performed on the input user transmission bits to generate PAM symbols; after power superposition, serial-to-parallel conversion, and Hermitian symmetry, the symbols are allocated to two signal components for HPAM-DMT transmission; the frequency domain signals of PAM-DMT and RPAM-DMT are calculated; an IFFT operation is performed to obtain the time domain signal; the time-domain preprocessed signal is calculated; the RPAM-DMT time domain signal is calculated and superimposed on the clipped PAM-DMT signal for synchronous transmission to obtain a mixed signal; a reconstructed signal is introduced, processed, and input to drive an LED for illumination; at the receiving end, the received signal is processed to generate a frequency domain signal, and finally, the multi-user signal is recovered. This scheme eliminates clipping noise interference between the mixed signal components, avoids error propagation problems, and achieves high spectral efficiency and power efficiency.

The present invention discloses a communication optimization method of joint beamforming and channel allocation, comprising: allocating channels between a controller and a user based on an ultra-reliable low-latency communication system model; completing data transmission between the controller and the channel based on the allocated channels; constructing a decoding error rate model based on the user's received signal, and constructing an optimization model with an optimal beamforming vector that minimizes the decoding error rate as the optimization target; introducing auxiliary variables, and converting the optimization model into a convex problem model through continuous convex approximation; iteratively solving the convex problem model based on an interior point method to obtain an optimal beamforming vector matrix; converting the optimal beamforming vector matrix into an optimal beamforming vector between the controller and the user through singular value decomposition; completing the beamforming of the ultra-reliable low-latency communication system model based on the optimal beamforming vector; and allocating channels between the controller and the user again. The present invention can effectively improve communication stability.

Embodiments of the present disclosure relate to the technical field of mobile communications, and provide a communication method and apparatus, an electronic device and a storage medium. The communication method is applied to a station device that supports multiple connections, and the method comprises: sending a first radio frame, wherein the first radio frame comprises a TID-to-Link mapping information element between a communication identifier and a target communication connection, and the target communication connection is a newly added and / or deleted communication connection. The embodiments of the present disclosure provide a means for implementing a TID-to-Link mapping mechanism in a multi-connection scenario.

The invention provides a computing task unloading optimization method considering multiple performance indexes, and belongs to the technical field of edge computing, the method adopts an orthogonal multiple access technology and a non-orthogonal multiple access technology in a mixed mode to provide services for multiple users at the same time, and the method comprises the steps that the time cost of each computing task under a preset computing path is calculated; inputting the time cost of each calculation task into a pre-established calculation task allocation model to generate a preliminary allocation scheme; establishing an MINLP model of a calculation task unloading optimization problem; and solving the MINLP model by adopting a Lagrange relaxation method and a dual decomposition method by taking the preliminary allocation scheme as a starting point, and obtaining an optimal calculation task unloading optimization scheme. According to the method, when the MINLP model is solved by using the Lagrange relaxation and dual decomposition method, the calculation task allocation model is adopted to provide a preliminary allocation scheme, so that the search range is reduced, the calculation complexity is reduced, and the real-time performance of the system is improved.

Provided in the present application are a synchronization signal block (SSB) sending method, network device and apparatus, the method being applied to the network device, the network device comprising a plurality of cells, the method comprising: segmenting a first frequency domain resource to obtain a plurality of sub-frequency domain resources under the first frequency domain resource, the first frequency domain resource being a frequency domain resource for sending an SSB, the plurality of sub-frequency domain resources are not overlapped with each other; in the plurality of sub-frequency domain resources, respectively determining sub-frequency domain resources, which are respectively used for sending the SSB, of the plurality of cells, the sub-frequency domain resources, which are respectively used for sending the SSB, of the plurality of cells are different; and respectively sending the SSBs to the terminals in the plurality of cells based on the sub-frequency domain resources, used for sending the SSBs, of the plurality of cells. According to the scheme, the spectrum utilization rate can be improved.

The present disclosure provides a communication method and apparatus. The communication method may comprise: determining a first message frame, the first message frame comprising information for identifying a capability of supporting the sending and / or receiving of an aggregate physical layer protocol data unit (A-PPDU); and sending the first message frame. The technical solution provided by embodiments of the present disclosure can improve a spectrum utilization ratio.

This invention provides a UAV power emergency communication and resource collaborative scheduling system, relating to the field of wireless communication technology. Through system initialization, data acquisition and hierarchical coding, satellite-to-ground link establishment, NOMA access and scheduling modeling, resource collaborative configuration model establishment, joint optimization solution, online collaborative execution, and anomaly response, it achieves dynamic resource scheduling and optimization, offering advantages such as efficient collaborative resource scheduling, improved spectrum utilization, optimized energy use, guaranteed access to key nodes, and enhanced system reliability and response speed.

The invention provides a spectral bandwidth adaptive adjustment method and device, equipment, a medium and a program product. The method comprises the following steps: acquiring a topological relation among a plurality of components in a satellite broadband communication system and a data index set of each component; constructing an adjacent matrix based on the topological relation; constructing a running state matrix based on the plurality of data index sets; inputting an adjacent matrix and the operation state matrix into an optimal Actor network to obtain a spectral bandwidth adjustment action; and issuing the spectral bandwidth adjustment action to the satellite broadband communication system to enable the satellite broadband communication system to execute the spectral bandwidth adjustment action. According to the spectral bandwidth adaptive adjustment method provided by the invention, the optimal Actor network is trained and deployed through the reinforcement learning algorithm, and the optimal Actor network can output an accurate spectral bandwidth adjustment action according to the adjacent matrix and the operation state matrix, so that the satellite spectral bandwidth is dynamically adjusted according to the real-time communication condition, and the flexibility of spectral bandwidth adjustment is improved; and the spectrum utilization rate is maximized.

The embodiment of the present invention discloses a small hybrid mode filter with two resonant cavities, belonging to the field of communication technology. The filter comprises: n resonant cavities connected in series, and a metal sheet is spaced between each two adjacent resonant cavities, n≥3; the first and last resonant cavities of the n resonant cavities are metal resonant cavities, and the remaining n‑2 resonant cavities are dielectric dual-mode resonant cavities; the n resonant cavities are coupled through the coupling window on the metal sheet. The filter provided by the embodiment of the present invention has the characteristics of compact size, low loss, large power capacity, high out-of-band suppression, and good harmonic performance, so as to effectively improve the anti-interference ability and spectrum utilization of the 5G communication system, reduce the power consumption of the 5G communication system, and improve the coverage of the 5G communication system.

The present application relates to a channel estimation optimization method, device, equipment and medium of a base station MIMO wireless communication system, which relates to the field of data processing, and the method includes: obtaining the channel preamble code in each communication connection request; based on the channel preamble code in the communication connection request, determining the pulse emission rate of multiple neurons corresponding to the channel preamble code in a preset channel estimation optimization model; in the neurons of the channel estimation optimization model, using Poisson distribution to perform Poisson sampling according to the pulse emission rate, randomly generating the time interval for the next pulse emission, and when the accumulated time interval reaches or exceeds the preset time interval threshold, recording the channel pulse code of the channel preamble code corresponding to the current time point; inputting the channel pulse code of the channel preamble code into the variational autoencoder in the channel estimation optimization model to reconstruct the channel preamble code. While improving the accuracy and efficiency of channel estimation, the present application also significantly reduces the energy consumption of the MIMO wireless communication system.