313 results about "Modulation coding" patented technology

The invention overcomes the constraints imposed by conventional wireless communication standards by introducing a physical-layer optimized architecture that decouples transmission control from any single protocol. Rather than being confined by the predefined behaviors of LTE, 5G NR, Wi-Fi, or NB-IoT, the system implements a unified control system that dynamically manages radio parameters—such as modulation, coding, and power—based on real-time link quality and network context. This cross-standard, multimode capability effectively supersedes traditional standard-driven implementations, enabling adaptive, low-latency, and spectrum-efficient communication in complex heterogeneous environments.The system dynamically controls radio access network (RAN) and physical layer parameters, including carrier aggregation, dynamic spectrum allocation, modulation and coding scheme (MCS) adaptation, beamforming configuration, channel coding, transmit power control, and frequency selection. The system architecture includes multi-mode base stations, relay nodes, and edge access points that support inter-RAT handover, fast radio link recovery, and seamless mobility across diverse wireless technologies.

The invention discloses an adaptive modulation anti-multipath unmanned aerial vehicle swarm communication method and system based on MIMO-OFDM, and relates to the technical field of wireless communication, and the method comprises the steps: receiving a down-conversion baseband; synchronization and compensation are carried out; removing a cyclic prefix and carrying out fast Fourier transform; estimating a channel and noise on the training and pilot frequency, and correcting a common phase; performing frequency domain equalization and soft decision, forward error correction and cyclic redundancy check according to the estimation to obtain a control parameter, decoding a payload according to the control parameter, and performing statistics to form a link quality indication; modulating coding, bandwidth and spatial mode, configuring mapping, power and weight, and packaging physical layer protocol data; carrier sensing conflict avoiding sending, confirmation and retry are adopted to generate media access statistics; and the routing selects the next-hop multi-hop forwarding according to the transmission quality, and performs end-to-end statistics and recharge. Through cooperation of hierarchical synchronization and phase correction with cyclic prefix and FFT, crosstalk is suppressed, channel noise scale optimization soft decision is robust, data decoupling is controlled, and end-to-end availability is improved through multi-hop self-healing recharge.

The invention discloses a data reading method and system based on an RFID reader-writer, particularly relates to the technical field of radio frequency identification data acquisition, and is used for solving the problem that the communication reliability of an existing RFID system is reduced due to carrier frequency deviation and multipath interference in a high-speed mobile environment. A phase change characteristic and an error rate index are obtained through double-antenna receiving signal analysis, when the error rate exceeds a limit, spatial correlation and error rate distribution difference are jointly analyzed to determine a multipath interference level, and meanwhile, a relative motion state is detected and judged through a phase track curvature characteristic. And dynamically selecting an optimal modulation coding mode to read data again according to the calculated motion speed estimated value and the interference level, thereby realizing the optimal balance between the communication rate and the reliability in the mobile environment.

The invention relates to the technical field of fingerprint identification, in particular to a wireless communication system and communication method of a fingerprint machine. The method comprises the following steps: collecting a fingerprint original data matrix through a capacitive fingerprint sensor, and carrying out fingerprint data preprocessing to obtain a fingerprint optimization feature vector; performing AES-GCM encryption on the fingerprint optimization feature vector by using the server side and the equipment side to generate primary encrypted feature data; therefore, through multi-level fingerprint feature optimization and encryption processing, based on a channel quality self-adaptive modulation coding and layered compression transmission technology, and a full-flow decryption discrimination and performance evaluation mechanism, the security and reliability of the system are improved, and the security and reliability of the system are improved. The problems that in a traditional fingerprint recognition system, data security is insufficient, transmission efficiency is low, and authentication accuracy is difficult to guarantee are solved, the security, reliability and communication transmission efficiency of the fingerprint recognition system are improved, and efficient protection and stable verification of biological recognition data are achieved.

The invention discloses an adaptive modulation coding method and system based on fuzzy logic, and belongs to the field of wireless communication, and the system comprises a dynamic window module which dynamically adjusts the window size of a fuzzy set according to the received signal strength indication and the change trend of the packet reception rate; the input fuzzification module takes the actual received signal strength indication and the packet reception rate as input and converts the actual received signal strength indication and the packet reception rate into fuzzy variables through fuzzification processing; the fuzzy reasoning module is used for defining different membership functions, mapping continuous received signal strength indications and packet reception rate measurement values into a fuzzy set, considering membership value combinations of all RSSI and PRR fuzzy categories, calculating a weighted total score and outputting a fuzzy decision value; and the defuzzification module is used for converting into an actual modulation coding selection scheme through a defuzzification process. By adopting the method and the system, the adaptability and the response speed of the system to complex and changeable channel conditions are improved, and the accuracy and the reliability of adaptive modulation coding selection are improved.

The invention discloses an optimization method and device of a satellite communication channel, terminal equipment and a storage medium, and belongs to the technical field of satellite communication, and the method comprises the steps: through a channel state prediction model, according to a first channel state parameter of the satellite communication channel at a current moment and second channel state parameters of a plurality of historical moments, carrying out the optimization of the satellite communication channel; and identifying the change trend of the satellite communication channel, and predicting the predicted channel state parameter of the satellite communication channel at the next moment. According to the first channel state parameter and the predicted channel state parameter, when it is judged that a fluctuation risk exists in a satellite communication channel, a target modulation coding scheme is generated; and finally, switching the modulation coding mechanism of the satellite communication system according to the target modulation coding scheme, thereby realizing real-time optimization of the satellite communication channel, and solving the problems that the modulation coding mechanism of the satellite communication system is lagged in adjustment and the satellite communication quality is difficult to guarantee.

A spatial adaptive multi-user service modulation and demodulation method suitable for various channel environments is characterized in that an uplink channel is configured with multiple paths of general carriers and multiple paths of helicopter special carriers in a frequency division mode, and the general carriers support uplink adaptive information transmission of terminals of various types and sizes in an MF-TDMA (Multimedia Frequency-Time Division Multiple Access) system; the on-satellite demodulator obtains a modulation coding mode of a burst data segment by identifying mode word information in a physical layer frame header, and demodulates a corresponding mode; the carrier special for the helicopter uses a continuous carrier mode, and multi-rate channel error correction coding and decoding under rotor wing shielding are supported in a channel interleaving mode. Downlink transmission is carried out in a fixed time slot and free time slot time division mode, and downlink information transmission for universal multi-type terminals and helicopter terminals can be supported at the same time. Compared with a common spatial modulation and demodulation method, the modulation and demodulation scheme provided by the invention can support adaptive transmission of general services of multiple types of terminals and helicopter service information on both an uplink and a downlink by using one satellite-borne modem.

The invention relates to a space-based infrared staring imaging system based on detector multiplexing sub-view field modulation coding, and relates to the technical field of modulation coding, detector multiplexing and space-based infrared staring imaging systems. The system comprises a front lens group, a sub-view-field modulation coding element, a rear lens group and a detector multiplexing assembly which are sequentially arranged along a light incidence direction. According to the space-based infrared staring imaging system based on detector multiplexing sub-view-field modulation coding, the function integrated design of detector multiplexing and sub-view-field modulation is achieved, and the problems that a traditional space-based infrared early warning system is large in weight, large in size, high in cost, high in requirement for the detector manufacturing process and the like are solved; and a lightweight architecture form is provided for realizing large-view-field real-time staring imaging by a single spatial load.

A modulation and coding scheme indication method and a corresponding apparatus in a wireless local area network system that supports one or more of a next-generation Wi-Fi protocol of IEEE 802.11ax (for example, 802.11be, Wi-Fi 7, or EHT), a next-generation Wi-Fi protocol of IEEE 802.11be (for example, 802.11bn, Wi-Fi 8, or UHR), Wi-Fi AI, a millimeter wave (mm Wave), an ultra wideband (UWB), and sensing (sensing). A method includes: generating a physical layer protocol data unit PPDU, where the PPDU includes a first field and a second field, the first field indicates a first modulation and coding scheme MCS group, and the second field indicates a number of spatial streams corresponding to one or more MCSs in the first MCS group; and sending the PPDU. This can reduce bit overheads.

The invention relates to an aliasing image target recognition and positioning algorithm based on sub-view-field shape modulation coding, relates to the technical field of aliasing image target recognition and view field judgment and positioning, and solves the technical problem that the scale and view field of a detector cannot be considered when large-view-field and high-resolution imaging is realized under the condition of a limited detector in the prior art. The algorithm comprises the following steps: identifying a foreground target; tracking a target rotation state; and judging the relevance between the target motion trail and the light spot shape change trend and inversely solving the actual spatial position. According to the aliasing image target recognition and positioning algorithm based on sub-view-field shape modulation coding, space-based early warning and large-width detection are achieved through the advantages of low power consumption and low cost of a small target surface detector, and the bottleneck that large-view-field imaging of an infrared optical system is limited by the manufacturing process of an infrared detector is broken through. According to the invention, through continuous frame light spot morphological feature extraction and trajectory-shape double-domain correlation modeling, unique determination and high-precision positioning of a view field of an object space where a target is located are realized.

Disclosed are a method and a device for performing Internet of things (IoT)-based communication in a wireless communication system. A method according to an embodiment of the present disclosure may comprise the steps of: identifying, by a first device, at least one of a modulation and coding scheme (MCS), repeated transmission, and transmission power for physical device-to-reader channel (PDRCH) transmission on the basis of a configuration or an indication from a second device; and transmitting, by the first device, a PDRCH to the second device on the basis of an energy level of the first device. Here, on the basis that the energy level of the first device does not satisfy a predetermined condition, transmission of the PDRCH may be performed by changing at least one of the MCS, the repeated transmission, and the transmission power.

Provided in the present application are a communication method and a communication apparatus, which can be applied to the field of communications. In the technical solutions provided in the present application, a communication device may predict, on the basis of historical interference information of an interfering satellite to a serving satellite and state information of the interfering satellite, interference of the interfering satellite to the serving satellite at a future time point. In this way, when it is detected that future interference information is greater than a threshold, the serving satellite may instruct the interfering satellite to disable a corresponding interfering beam or change a beam modulation and coding scheme, so that interference to communication can be reduced, and communication performance can be ensured.

The present application relates to the technical field of signal modulation and coding joint identification, and particularly relates to a modulation and coding joint identification method and system based on a multi-channel attention network, which encodes a modulation information sequence by simulating a communication environment with a randomly generated radio information sequence, generates a digital modulation signal and an analog modulation signal, and assembles signal sample data; constructs a multi-channel convolutional gated deep attention network model for modulation and coding joint identification, and trains and optimizes the multi-channel convolutional gated deep attention network model using the signal sample data; inputs a signal to be identified into the trained and optimized multi-channel convolutional gated deep attention network model, and obtains the modulation and coding category of the signal to be identified using the trained and optimized multi-channel convolutional gated deep attention network model. The present application can improve the efficiency of modulation and coding joint identification, can realize the task of signal modulation and coding joint automatic identification, and is convenient for deployment and implementation.

The present application belongs to the technical field of signal processing. Disclosed are a signal processing method and apparatus, and a device. The method comprises: using an encoding matrix to modulate driving signals sent in parallel by a plurality of TX electrodes, wherein the encoding matrix comprises a full-column-rank matrix of size M×N or a full-row-rank matrix of size N×M, M and N are both positive integers, and M＞N; and using a decoding matrix to decode sensed signals, wherein the decoding matrix is a generalized inverse matrix of the encoding matrix, the sensed signals are obtained by means of sensing by a plurality of RX electrodes, there is coupling capacitance between any RX electrode among the plurality of RX electrodes and each TX electrode among the plurality of TX electrodes, and the coupling capacitance is determined on the basis of the signals decoded by means of the decoding matrix. In the method, when a touch control panel uses a CDM driving mode, driving signals are modulated using a non-square encoding matrix, thereby increasing SNRs of sensed signals generated when the touch control panel uses the CDM driving mode.

Ultra-Wideband (UWB) wireless technology transmits digital data as modulated coded impulses over a very wide frequency spectrum with very low power over a short distance. Accordingly, the inventors have established UWB devices which accommodate and adapt to inaccuracies, errors, or issues within the implemented electronics, hardware, firmware, and software. Beneficially, UWB receivers may accommodate offsets in absolute frequency between their frequency source and the transmitter, accommodate drift arising from phase locked loop and / or from relative clock frequency offsets of the remote transmitter and local receiver. UWB devices may also employ modulation coding schemes offering increased efficiency with respect to power, data bits per pulse transmitted, and enabled operation at higher output power whilst complying with regulatory emission requirements. Further, UWB devices may support a ranging function with range / accuracy not limited to the low frequency master clock employed within these devices enabling operation with ultra-low power consumption.

Methods, systems, and devices for techniques for dynamically adjusting retransmission opportunities within a connected isochronous stream (CIS) are described. In some aspects, a first wireless device and a second wireless device may support one or more dynamic or “on-the-fly” adjustments to one or more CIS settings in accordance with a link quality between the first wireless device and the second wireless device. For example, the first wireless device and the second wireless device may tie a number of transmission opportunities that are usable for retransmissions, within a given isochronous (ISO) interval, to the link quality between the first wireless device and the second wireless device. The link quality may be tied or associated with a modulation and coding scheme (MCS) of the link. As such, the first wireless device and the second wireless device may tie a dynamic change in MCS to a dynamic change in retransmission opportunities.

The application relates to the technical field of underwater acoustic communication, and discloses a method and system for dynamically allocating resources of an underwater voice communication system. The method comprises the following steps: setting a multi-user priority strategy according to a formation modular grouping; adopting a hybrid access mechanism of fusion of time division multiple access and carrier sense multiple access / collision avoidance, dividing communication channels into inter-group time slots and intra-group time slots, and competing for access to idle sub-carrier clusters in the time slots through a CSMA / CA mechanism; predicting a future state of an underwater acoustic channel; based on the predicted future state, adaptively switching a modulation and coding scheme according to a preset signal-to-noise ratio threshold; distributing sub-carrier bands to users with the largest channel gain based on a channel gain matrix; and combining the multi-user priority strategy, the hybrid access mechanism and the modulation and coding scheme to jointly optimize and distribute sub-carriers, bit loading and transmission power. Through dynamic resource allocation and adaptive transmission optimization, the application effectively improves the resource utilization rate and transmission quality of underwater voice communication.

Using this described protocol an AP can control multiple STAs to allow them to utilize the same scrambling seed to scramble the data in identical data units being sent on the wireless network. The AP sends a scrambling seed indication within a frame communicated to other STAs on the network. These other STAs, then use this scrambling seed indication to scramble a data field of a data unit with an identical scrambling seed, and to transmit these packets using the same modulation and coding scheme (MCS).

This invention discloses a PUSCH resource allocation method, comprising: updating the signal-to-interference-plus-noise ratio (SIR) of single-port or two-port PUSCH scheduling; calculating the SIR adjustment amount of single-port or two-port PUSCH scheduling; calculating the total SIR of single-port or two-port PUSCH scheduling; and optimizing single-port and two-port PUSCH scheduling based on a maximum throughput algorithm according to the maximum number of resource blocks T, the total SIR of single-port or two-port scheduling, the demodulation threshold of single-port or two-port scheduling, and the maximum number of resource blocks available during the current PUSCH scheduling, to determine the number of ports, modulation and coding scheme, and maximum number of resource blocks for PUSCH scheduling. This method improves the uplink rate of the terminal and the utilization efficiency of valuable air interface resources, thereby enhancing the user experience.

This invention relates to a modulation and coding scheme and a method, system, device, and medium for predicting spatial stream counts. The method includes: acquiring received signal strength indication data and preset threshold information between at least two access points and a site; determining the synchronous / asynchronous communication status between each access point based on the dynamic relationship between the received signal strength indication data and the preset threshold information; classifying signals transmitted from adjacent access points to the site as interference signals and signals transmitted from adjacent sites as ambient noise based on the synchronous / asynchronous communication status; calculating the signal-to-noise ratio (SNR) of the site based on the signal classification results; inputting the SNR, synchronous / asynchronous communication status, and access point transmit power into a gradient boosting decision tree model; and outputting the modulation and coding scheme and spatial stream count prediction results of the target access point through the gradient boosting decision tree model. This method significantly improves the MCS / NSS prediction accuracy of high-density WLANs.

Methods and apparatuses for downlink and uplink transmissions in full-duplex systems. A method for operating a user equipment (UE) for receiving a physical downlink shared channel (PDSCH) includes receiving: first information for a first modulation and coding scheme (MCS) table associated with a first frequency-domain subband in a reception bandwidth on a cell, second information for a second MCS table associated with a second frequency-domain subband in the reception bandwidth, and third information for a condition. At least one of the first and second frequency-domain subbands is one of a subband full-duplex (SBFD) downlink (DL) subband, an SBFD flexible subband, or an SBFD uplink (UL) subband. The method further includes determining whether the condition is valid for reception in a slot or symbol and receiving the PDSCH in the slot or symbol based on the first MCS table when valid and the second MCS table when not valid.

The present disclosure provides a data transmission method and device, a storage medium and a program product, relates to the technical field of communication, and is beneficial to improving data transmission efficiency. The method comprises the following steps: acquiring a first transport block to be encoded, information bits in the first transport block are configured to adopt a plurality of different modulation and coding modes; determining N second transport blocks according to the first transport block, the information bits in the second transport blocks adopt the same modulation and coding mode, and N is an integer greater than 1; encoding the N second transport blocks respectively, and then performing code block concatenation to obtain a third transport block, wherein the third transport block comprises the N second transport blocks after encoding; and transmitting the third transport block.

A method of a user equipment (UE) in a wireless communication system is provide. The method includes: receiving, from a base station, physical downlink shared channel (PDSCH) configuration information including a higher layer parameter for a modulation and coding scheme (MCS) table; identifying the MCS table for a PDSCH based on the higher layer parameter for the MCS table; receiving, from the base station, the PDSCH; and decoding, based on the identified MCS table, the PDSCH, wherein, in case that the higher layer parameter for the MCS table indicates a 1024-quadrature amplitude modulation (QAM), the MCS table for the PDSCH is identified as an MCS table with a maximum modulation order of 10, and wherein the MCS table with the maximum modulation order of 10 includes a set of combinations comprising a modulation order and a target code rate, the set of combinations including: (10, 805.5 / 1024), (10, 853 / 1024), (10, 900.5 / 1024), and (10, 948 / 1024).

A communication method and system for wireless transmission using aggregated physical layer protocol data units (A-PPDUs). An access point (AP) determines an A-PPDU comprising one or more sub-PPDUs, where each sub-PPDU includes a physical layer preamble containing bandwidth information indicating the transmission bandwidth of that sub-PPDU. The bandwidth information may be embedded in a legacy signal (L-SIG) field along with a legacy length (L-length) subfield providing sub-PPDU length. Additional signal (SIG) fields of each sub-PPDU may carry further information including basic service set (BSS) color, station identifiers, modulation and coding scheme (MCS), uplink / downlink identifiers, transmission opportunity (TXOP) values, and padding data. Media Access Control (MAC) fields include receiver and transmitter addresses, which vary depending on whether the A-PPDU is for uplink or downlink transmission, and support multi-link devices (MLDs). Implementations include electronic devices and computer-readable media configured to perform these communication methods for enhanced multi-user and multi-link wireless communication.

The application discloses a SNR-MCS dynamic mapping table design method, and belongs to the technical field of wireless communication, comprising: continuously updating the SNR-MCS dynamic mapping table; outputting the transmission success probability based on the probability prediction model according to the signal-to-noise ratio and the modulation and coding mode; screening the MCS candidate set according to the transmission success probability to construct the MCS prediction model; collecting the actual signal-to-noise ratio to input the MCS prediction model to output the modulation and coding mode, and collecting the transmission feedback to update the data pool; dividing the signal-to-noise ratio into several segments, generating the SNR-MCS dynamic mapping table based on the coverage range of the signal-to-noise ratio of each segment and the MCS prediction model; using the SNR-MCS dynamic mapping table for interaction and updating the data pool; and retraining the probability prediction model through the updated data pool. The application solves the problem of low transmission efficiency and reliability caused by the fact that the prior art cannot adapt to the changing channel conditions.

The application belongs to the technical field of emergency communication, and discloses an emergency communication method and system fusing a satellite network and a ground base station network; the method comprises the following steps: acquiring satellite data and ground data; performing spectrum allocation through federated learning; positioning blind area coordinates and survivor base station coordinates according to the satellite data, and adjusting the beam direction and width in combination with MIMO technology; selecting the survivor base station as a relay base station; acquiring a channel state, dynamically adapting modulation and coding through a dynamic switching strategy according to the spectrum allocation result and the beam gain value; constructing a comprehensive link weight model according to the link delay of the ground data, the spectrum allocation result and the dynamic switching strategy, and generating an optimal path by using an improved Dijkstra algorithm; and the relay base station is also powered through a hybrid power supply strategy; the application can significantly improve the fast self-healing capability of the communication network to node failure and link interruption and the service transmission reliability.

The disclosure relates to a method, device and non-transitory computer readable media or selecting a transmit power, a physical resource block (PRB), and a modulation and coding scheme (MCS) for a grant free uplink transmission. The method comprises obtaining an observation of the radio environment of the device. The method comprises selecting an action, based on the observation, for execution during a next time slot, the action comprising selecting the transmit power, the PRB, and the MCS for the grant free uplink transmission.