23 results about "Superposition coding" patented technology

The invention relates to the field of psychological health monitoring, and discloses a psychological health dynamic management system, which comprises a data acquisition module used for acquiring time, space and behavior multi-modal data of a user in real time; the tensor processing module is connected with the data acquisition module and is used for constructing the multi-modal data into a three-dimensional tensor and carrying out dimension reduction decomposition on the three-dimensional tensor; the quantum privacy module is connected with the tensor processing module and is used for performing quantization coding and privacy protection processing on the decomposed feature gradient; the federation aggregation module is connected with the quantum privacy module and is used for executing collaborative optimization of model parameters among distributed nodes; and the correction compensation module is bidirectionally connected with the tensor processing module and the federal aggregation module. The quantum privacy module realizes irreversible hidden transmission of gradient data, adopts a quantum state superposition coding and dynamic measurement basis selection mechanism, and ensures that the transmission process meets differential privacy constraints through non-orthogonal basis projection measurement and quantum noise injection.

Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for communication uplink control information (UCI). One aspect provides a method for wireless communication. The method includes generating a physical uplink shared channel (PUSCH) having at least one resource element (RE) for communicating uplink control information (UCI), wherein at least a portion of the UCI is encoded and mapped to a first subset of bits of the at least one RE, and wherein a portion of data is encoded and mapped to a second subset of bits of the at least one RE; and transmitting the PUSCH including the data and the UCI.

The invention discloses an interactive live broadcast method and system, electronic equipment and a storage medium, and relates to the field of interactive live broadcast. The method comprises the following steps: acquiring user interaction content during live broadcast, and determining a to-be-generated branch plot according to the user interaction content; analyzing the interactive content file according to a branch plot to be generated to obtain an initial video, plot logic and model texture; rendering the model texture to obtain a first video stream, drawing a user interface element and an animation effect according to the plot logic to obtain a second video stream, and decoding the initial video to obtain a third video stream; and performing superposition coding on the first video stream, the second video stream and the third video stream to obtain a target live broadcast stream, and sending the target live broadcast stream to a live broadcast platform for display. By implementing the technical scheme provided by the invention, the story development is promoted according to the user interaction content, and the sense of participation of the user is improved.

The embodiment of the invention discloses a communication method, a communication device and a storage medium, which are applied to the technical field of communication and are used for realizing superposition coding between transmission blocks. The method comprises the steps that first data is determined, the first data comprises a first code block, the first code block is obtained by overlapping a plurality of code blocks, and at least two of the code blocks belong to different first transmission blocks; the first data packet is sent, the first data packet comprises multiple pieces of data, and the multiple pieces of data comprise the first data. The first code block in the first data is obtained by superposing the data in the plurality of first transmission blocks, so that when the data transmission in the data packet has an error, the receiving end equipment can correct the error data according to the first data in the data packet, so that the data in the data packet can be successfully decoded, and the decoding efficiency of the data packet is improved. The performance gain of mutual error correction between transmission blocks is improved.

The application relates to the technical field of wireless communication and vehicle-mounted multimedia interaction, in particular to a vehicle-mounted video backhaul and multi-mode audio interaction system, which comprises the following modules: a service shunting module, which is used for determining the priority label of audio stream data according to an identification result; a channel analysis module, which is used for evaluating the channel capacity and interference level of current time-frequency resources; a power domain allocation module, which is used for dynamically calculating a power allocation coefficient and dividing the total transmission power of a vehicle-mounted communication terminal into a first power level and a second power level; a superposition coding module, which is used for generating a multi-layer superposition signal; and a transmission control module, which is used for directly transmitting the multi-layer superposition signal to a base station side through a radio frequency unit in a scheduling-free transmission mode without sending a scheduling request signaling, so that the competition and conflict of high-definition video backhaul and key voice interaction for limited time-frequency resources in vehicle-mounted wireless communication are effectively solved, and efficient concurrency of heterogeneous services is realized.

The present disclosure relates to the technical field of communications. Provided are semantic communication methods, a communication device and a communication system. A semantic communication method comprises: a first device, which serves as a transmitting end, first acquiring semantic information at different levels from a semantic recognition result of data to be sent; then performing superposition coded modulation on the semantic information at different levels to obtain a modulated signal; and then sending the modulated signal to a plurality of second devices, which serve as receiving ends, such that the second devices can obtain semantic information at corresponding levels on the basis of channel conditions thereof, thereby meeting the communication requirements of different receiving ends under different channel conditions.

The application discloses a method for interference utilization of a reconfigurable intelligent surface assisted cognitive non-orthogonal multiple access network, and comprises the following steps: constructing a reconfigurable intelligent surface assisted downlink cognitive radio non-orthogonal multiple access system; a superposition coding is adopted by a base station to send signals to all users, and a joint optimization of an active beamforming vector of the base station and a passive reflection phase shift matrix of the reconfigurable intelligent surface is performed to construct a constructive superposition signal for direct detection of a secondary user; the secondary user directly demodulates own data through a single user detector without performing serial interference cancellation (SIC) based on the constructive superposition signal; by utilizing the intelligent reconstruction of a wireless propagation environment by the reconfigurable intelligent surface, the application adopts a constructive interference technology to convert strong interference of a primary user into a constructive signal of a secondary user; the mechanism realizes direct detection through the constructive interference design, greatly simplifies the receiving and processing of the secondary user and reduces the time delay.

The invention relates to the technical field of wireless communication and vehicle-mounted multimedia interaction, in particular to a vehicle-mounted station video return and multi-mode audio interaction system, which comprises a service shunting module used for determining a priority label of audio stream data according to an identification result; the channel analysis module is used for evaluating the channel capacity and the interference level of the current time-frequency resource; the power domain distribution module is used for dynamically calculating a power distribution coefficient and dividing the total transmitting power of the vehicle-mounted communication terminal into a first power level and a second power level; the superposition coding module is used for generating multiple layers of superposition signals; the transmission control module is used for directly transmitting the multi-layer superposed signal to a base station side through a radio frequency unit in a scheduling-free transmission mode under the condition that a scheduling request signaling does not need to be sent; according to the method, the competition conflict of high-definition video return and key voice interaction on limited time-frequency resources in vehicle-mounted wireless communication is effectively solved, and efficient concurrency of heterogeneous services is realized.

The invention belongs to the technical field of wireless communication, and particularly relates to a channel-adaptive hybrid superposition coding modulation method. According to the method provided by the invention, a traditional superposition coded modulation system is improved, zero filling is carried out on a transmitting end by utilizing a channel feedback technology and combining channel information, and compared with the original superposition coded modulation system, the bit error rate is reduced and the spectrum efficiency is flexibly realized at the same time; the method has the potential of being combined with other detection algorithms.

Disclosed in the embodiments of the present application are a communication method, a communication apparatus and a storage medium, which are applied to the technical field of communications, and used for implementing superposition encoding between transport blocks. The method in the embodiments of the present application comprises: determining first data, wherein the first data comprises a first code block, the first code block is obtained by means of superimposing a plurality of code blocks, and at least two of the plurality of code blocks belong to different first transport blocks; and sending a first data packet, wherein the first data packet comprises a plurality of pieces of data, and the plurality of pieces of data comprise the first data. A first code block in first data is obtained by means of superimposing data in a plurality of first transport blocks, such that when an error occurs during the transmission of data in a data packet, a receiver-side device can perform error correction on erroneous data on the basis of the first data in the data packet. Therefore, the data in the data packet can be successfully decoded, thereby improving the performance gain of mutual error correction between the transport blocks.

This invention relates to the field of automation control technology and discloses a method for coordinated flow and pressure control under deep well high-pressure fluid operation conditions. The method includes: acquiring parameters from the power actuator and pressure feedback from the controlled system to establish a state feature vector; generating a control sequence containing flow control and pressure compensation components using a virtual cross-impedance decoupling model; superimposing an coded signal as a logic probe into the command and extracting the dynamic phase angle difference using the feedback residual; calibrating the transmission channel time constant based on the phase angle difference and performing time-domain shifting and alignment on the pressure compensation component; adjusting the power actuator while simultaneously controlling the output of the regulating actuator to provide a counter-current signal. This invention transforms variable coupling into non-interfering logic channels through virtual impedance decoupling, eliminating oscillations induced by loop interference; and using an endogenous excitation calibration mechanism to sense transmission characteristics, solving the compensation phase deviation caused by material property drift, and ensuring stable pressure convergence.

The invention discloses a sonde energy-saving method based on a superposition coding technology, and belongs to the field of wireless communication. In order to solve the problem that energy consumption is too high due to the fact that a wireless communication module is frequently started by a traditional sonde, superposition coding transmission of meteorological data is achieved through a Hadamard orthogonal matrix. The method specifically comprises the steps that after meteorological data packets collected at multiple adjacent moments are subjected to constellation modulation, Hadamard matrix row vectors are distributed for signal expansion; superposing the extended signals into a single transmitting signal, and completing multi-packet data transmission through single communication; and the ground station demodulates and recovers each data packet by using the orthogonality of the row vector of the Hadamard matrix. A dynamic adjustment strategy is innovatively introduced, the number of superposed packets is optimized in real time according to the bit error rate feedback of a ground station, and energy is saved to the maximum on the premise that the communication quality is guaranteed. According to the method, the communication energy consumption is reduced, the endurance of the lithium battery is effectively prolonged, the method is suitable for an aerial sonde system released by an unmanned aerial vehicle, and the meteorological data acquisition efficiency is remarkably improved.

A user device determines 510, based on a condition (e.g. a radio condition level) of the user device, a superposition encoding level to be used by the user device for a detection of a low power wake-up signal (LP-WUS) received from a network node and detects 520 the LP-WUS based on the determined superposition encoding level. The superposition encoding level may be associated with a modulation order of an On-Off Keying (OOK) modulation and the user device may obtain a first modulation order corresponding to the first superposition encoding level, determine a sub-group indication associated with a sub-group of user devices to which the user device belongs and determine whether the sub-group of user devices is paged based on the sub-group indication.

The invention provides a transmission-type multi-wavelength image reproduction optical element, a printing stock and a preparation method, and the preparation method of the transmission-type multi-wavelength image reproduction optical element utilizes a wavelength multiplexing technology to hide a plurality of patterns in the same hologram, and realizes selective reproduction of the patterns by changing the wavelength of illumination light. For each pattern to be hidden, a hologram for a specific wavelength is calculated, respectively. And then the holograms for different wavelengths are superposed and coded on the same physical diffraction structure. When a wide-spectrum light source (such as white light) is used for irradiation, all coding information is diffracted at the same time, and reproductive images are overlapped, blurred and unclear and cannot be recognized due to dispersion and crosstalk. When a monochromatic point light source (specific wavelength) is used for irradiating from the back surface of the element, only a target image corresponding to the wavelength can be clearly reproduced with high contrast, and images corresponding to other wavelengths cannot be focused due to serious phase mismatch, so that the anti-counterfeiting effect is good.

The application discloses a kind of superimposed coding phase unwrapping method based on phase quantization in the field of optical measurement, comprising the following steps: confirming the pixel width W1 of each period in image, generating N-step phase shift fringe;Design the superimposed coding fringe of auxiliary phase unwrapping, uniformly assign to each period, generate black and white fringe image;Acquisition modulated projection fringe is transmitted into computer;Extract wrapped phase, extract order fringe k1;Determine another group of fringe order k2 by order k1 superimposed binary fringe;Phase unwrapping operation is carried out to wrapped phase, and the absolute phase of measured object is obtained.The method of the application in the process of obtaining order, coding fringe can obtain ladder order by digital superposition operation, algorithm is simple, and it is not necessary to carry out tedious calculation such as radix operation, mapping array or phase calculation, and jump error is modified using the method of wrapped phase binaryzation, improve wrapped phase utilization, reduce additional coding projection.

The invention belongs to the technical field of underwater acoustic communication, and relates to an underwater acoustic OFDM (Orthogonal Frequency Division Multiplexing) downlink communication multiple access method based on polarization code superposition coding. The method comprises the following steps: determining an optimal signal-to-noise ratio according to a required code rate, and calculating a Bhattacharyya parameter logarithm value of each sub-channel under the optimal signal-to-noise ratio; performing ascending sorting on the sub-channels according to the Bhattacharyya parameter logarithm value, and selecting an information bit position distribution set; dividing the sub-channels in the set into a plurality of subsets according to a recording sequence, and respectively distributing the subsets to different users; carrying out interleaving scrambling, constellation mapping and OFDM modulation on code words coded by a user to obtain time domain signals of the code words; superposing the time domain signals of the two users to obtain a sending signal of the main node; and decoding the received signal at a receiving end. According to the method provided by the invention, the fairness of the communication quality of a plurality of users is realized, the bit error rate is reduced, and under the condition that the signal-to-noise ratio difference is large enough, fair resource allocation is realized among the plurality of users, and the data transmission efficiency is improved.

The invention discloses a multi-beam digital transmission metasurface design method adaptive to direct communication of the Internet of Vehicles. The metasurface works in a 5.9 GHz frequency band and is composed of 40 * 40 double-C-shaped slot loading units, 2-bit transmission phase coding is achieved by adjusting inner-layer slot parameters of the units, and the transmission amplitude is superior to-2dB. According to the design, a quadrant partition beam forming method is adopted, an array is divided into four sub-regions, superposition codes of a focusing phase and a specific deflection phase are loaded respectively, and therefore four symmetrically-distributed high-gain beams are synchronously generated. Simulation results show that main beams of the array respectively point to azimuth angles of 45 degrees, 135 degrees, 225 degrees and 315 degrees, pitch angles are all 30 degrees, the maximum gain reaches 14.2 dBi, the narrow-beam and low-sidelobe characteristics are achieved, and the problem of efficient coverage of one source and multiple directions in an Internet of Vehicles scene is effectively solved.

Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for communication uplink control information (UCI). One aspect provides a method for wireless communication. The method includes generating a physical uplink shared channel (PUSCH) having at least one resource element (RE) for communicating uplink control information (UCI), wherein at least a portion of the UCI is encoded and mapped to a first subset of bits of the at least one RE, and wherein a portion of data is encoded and mapped to a second subset of bits of the at least one RE; and transmitting the PUSCH including the data and the UCI.

Provided are a data transmission method and a communication device, the method relating to the technical field of communications, the method comprising: a terminal device sending first data, the first data being encoded by using a first encoding mode; and the terminal equipment sends second data, wherein the second data is determined by carrying out LDGM superposition coding according to a plurality of to-be-retransmitted first data blocks in the first data. Through the method and the device, the overhead of data block retransmission resources can be reduced under the condition of limited resources and limited data packet delay budget.

The invention relates to the technical field of automatic control, and discloses a flow pressure coordinated regulation and control method under the working condition of deep well high-pressure fluid operation, which comprises the following steps: acquiring parameters of a power execution end and pressure feedback of a controlled system to establish a state feature vector; generating a regulation and control sequence containing a flow control component and a pressure compensation component by using a virtual cross impedance decoupling model; superposing a coded signal in the instruction to serve as a logic probe, and extracting a dynamic phase angle difference by using a feedback residual error; calibrating a transmission channel time constant according to the phase angle difference and implementing time domain translation alignment on the pressure compensation component; according to the method, variable coupling is converted into non-interfering logic channels through virtual impedance decoupling, and oscillation induced by loop intervention is eliminated; an endogenous excitation adjustment mechanism is used for sensing transmission characteristics, compensation phase deviation caused by physical property drift is solved, and stable convergence of pressure is ensured.

Provided in the present application are a data transmission method and a communication apparatus. The method relates to the technical field of communications, and comprises: a terminal device sending first data, wherein the first data is encoded in a first encoding mode; and the terminal device sending second data, wherein the second data is determined by means of performing LDGM superposition coding on a plurality of first data blocks to be retransmitted in the first data. The present application facilitates a reduction in the overheads of data block retransmission resources under the conditions of limited resources and a limited packet delay budget.

Example embodiments of the present disclosure generally relate to methods, devices, apparatuses and computer readable storage medium for the low power wake-up signal (LP-WUS). The method comprises: The method may include determining, at a user device based on at least one condition of the user device, a superposition encoding level to be used by the user device for a detection of a LP-WUS received from a network node; and detecting the LP-WUS based on the determined superposition encoding level.

Various example embodiments of the present disclosure relate to methods, devices, apparatuses and computer readable storage medium for the low power wake-up signal (LP-WUS) The method comprises: generating, a LP-WUS signal including at least one group specific information and at least one sub-group indication associated with the at least one group specific information, each of the at least one group specific information being associated with a group of user devices; and transmitting the LP-WUS signal to at least one user device.