168 results about "Error correction coding" patented technology

There is provided a method in a node of a wireless communication network. The method comprises receiving from an application a protocol data unit (PDU) set corresponding to an encoded application data unit (ADU). The method further comprises determining an Application-Layer Forward Error Correction (AL-FEC) coding configuration associated with the encoded ADU and transmitting the PDU set. The method further comprises determining whether a cease criterion is satisfied, wherein the cease criterion is based on the AL-FEC coding configuration, and ceasing transmission of the PDU set based on the cease criterion being satisfied.

The invention discloses a customer information storage management method and system based on a block chain, and relates to the technical field of distributed data evidence storage, and the method comprises the steps: collecting terminal customer information, generating an encrypted data packet, carrying out erasure coding, and generating an encrypted data fragment set; carrying out distributed storage based on the encrypted data fragment set, and calculating a data availability commitment at the same time; executing availability sampling according to the data availability commitment, and generating a fragment validity proof; based on the fragment validity proof, performing format and validity verification to obtain a to-be-processed proof set; and generating a recursive aggregation proof according to the to-be-processed proof set, and submitting the recursive aggregation proof to the block chain to verify and update a proof storage state. And cryptographic authentication is carried out on the persistent evidence storage state of the data assets, so that the dual beneficial effects of ensuring data privacy and credible evidence storage are achieved.

The invention provides a fusion type secure storage system, electronic equipment, a data management method and a computer readable storage medium. The system comprises a hardware security layer, an encryption processing layer, a verification error correction layer, a data stream processing layer and an intelligent management layer which are in communication connection, the hardware security layer provides a physical trusted root for the system and executes a security policy; the encryption processing layer is used for carrying out encryption processing on data based on the security service provided by the physical trusted root; the verification and error correction layer is used for carrying out integrity verification and self-adaptive error correction coding on the encrypted data; the data stream processing layer is used for executing a near data calculation task on the data subjected to verification and error correction; and the intelligent management layer collects real-time state data from the hardware security layer, the encryption processing layer, the check error correction layer and the data stream processing layer, and performs dynamic strategy configuration and global optimization decision, thereby improving the active calculation, dynamic adaptation and intelligent optimization capabilities of the system.

The invention relates to an FPGA-based satellite-borne file adaptive storage and scheduling method, which comprises the following steps: defining a data plane and a control plane, the data plane being responsible for high-frequency and high-speed data processing, and the control plane being responsible for low-frequency and low-speed data management and decision making; the data plane obtains a real-time data stream to be stored and stores the real-time data stream into a data cache; monitoring the running state of the data cache in real time, generating cache state data and reporting the cache state data to a control plane; the control plane makes a strategy decision based on the cache state data to generate a target strategy instruction; the data plane obtains the instruction and carries out hardware priority judgment in combination with cache state data so as to determine a final data writing instruction; and the data plane responds to the write-in instruction, executes error correction coding processing, data write-in and file verification processing, and reports a file closing state to the control plane. The method has the advantages that the system can dynamically respond to the real-time system load, and the stability and reliability of system scheduling are improved.

The invention discloses a data management system based on unmanned aerial vehicle surveying and mapping, and particularly relates to the technical field of data management. The method comprises the steps of collecting unmanned aerial vehicle surveying and mapping data, and performing space coordinate registration and unified coding; performing spatial region division according to the terrain elevation variable coefficient and the obstacle projection coverage rate to obtain a high-density verification region and a low-density verification region; for the high-density verification area, calculating the feature matching degree of an overlapping area of adjacent frames through a local feature matching algorithm, and outputting first correction data; performing data compensation on the low-density verification region by adopting spatial interpolation and cubic spline interpolation to generate second correction data; generating a full-scene reconstruction data frame based on the first correction data and the second correction data; based on full-scene data frame reconstruction, region weight factor distribution, differential error correction coding execution and unmanned aerial vehicle surveying and mapping result data output, the spatial adaptability of data verification is effectively improved, and the overall accuracy and integrity of unmanned aerial vehicle surveying and mapping data are improved.

The invention provides a physical frame structure design method suitable for satellite-ground high-order high-bit-rate wireless communication, which comprises the following steps of: slicing service data according to a preset length, and generating a baseband frame based on the obtained data slices; performing scrambling processing on the baseband frame to obtain a scrambled baseband frame; sequentially executing preset error correction coding processing on the scrambled baseband frames to obtain coded frames; performing internal interleaving processing on the coding frame to obtain internal interleaving data, and forming a first physical frame; performing external interleaving processing on the first physical frame to obtain external interleaving data; mapping the outer interleaved data into a symbol stream; performing physical frame framing based on the symbol stream to obtain a second physical frame; and performing scrambling processing on the to-be-scrambled symbols except the physical frame header in the second physical frame to obtain a scrambled physical frame, and performing modulation based on the scrambled physical frame to perform data transmission, thereby improving phase noise resistance and channel distortion resistance, enhancing Doppler frequency shift resistance, and optimizing transmission efficiency and reliability.

The invention relates to the technical field of electronic data collection, in particular to a secure data transmission method for an EDC system, and the method comprises the steps: carrying out the semantic layering of a data package, and setting target transmission reliability for the data of different semantic hierarchies; the network transmission state is evaluated in real time, the minimum redundancy required for achieving the target transmission reliability is dynamically calculated, and forward error correction coding parameters are determined; carrying out adaptive forward error correction coding on data of different semantic hierarchies according to the parameters, and carrying out hierarchical transmission according to priorities; and the receiving end carries out progressive reconstruction and instantly presents the reconstructed data. Through the technical scheme of the invention, accurate calculation and application of appropriate redundancy protection can be realized according to the data value and the real-time network quality, reliable transmission of high-value data is ensured in a weak network environment, and the transmission efficiency is improved to the greatest extent.

The invention relates to the technical field of computers, in particular to a block chain right-confirming forestry remote sensing data ontology feature recognition method and system, and the method comprises the steps: extracting the multi-scale features of forestry remote sensing image data through a pre-trained deep convolutional neural network, and generating a feature pyramid with an unchanged rotation and scale; a time-space fusion feature vector is generated by combining seasonal attention weight adjustment, and forestry remote sensing image fingerprints are formed after principal component analysis and dimension reduction; a fuzzy commitment is adopted to bind the random key after error correction coding with a forestry remote sensing image fingerprint to generate a block chain evidence storage commitment, and a storage architecture with on-chain evidence storage and under-chain metadata collaboration is constructed; and efficient right confirmation is realized. The problem that a traditional Hash method is sensitive to image deformation is solved, the problem of feature drift caused by seasonal changes is solved, verifiable right confirmation is achieved, the method has the advantages of being high in storage efficiency, high in response speed and the like, a credible ownership authentication basis is provided for forestry remote sensing data sharing, and the data circulation efficiency is remarkably improved.

A geometry-aware method of writing parity, performed by a storage system is provided. The method includes writing data, using error correction coding, to a RAID stripe comprising a plurality of allocation units of storage memory of the storage system, and writing one or more parity pages comprising parity data for a block having a portion of the data of the RAID stripe in one of the plurality of allocation units of the RAID stripe to a targeted differing word line of the block or a differing block, the parity data for the block distinct from the error correction coding of the RAID stripe.

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. The present disclosure discloses a method and an apparatus for error correction coding in a communication system, more specifically, to error correction coding integrated with transmission diversity.

In one aspect, a method includes receiving, in a first wireless device, a data transmission including at least one orthogonal frequency division multiplexing (OFDM) packet from a second wireless device; processing the at least one OFDM packet to recover data and providing the data to a host processor of the first wireless device; encoding, in the first wireless device, at least one decoded symbol of the at least one OFDM packet using forward error correction coding; processing the encoded at least one decoded symbol to recover at least one corresponding transmission symbol of the at least one OFDM packet; and determining a distance estimate between the first wireless device and the second wireless device based at least in part on the corresponding transmitted symbols.

The invention relates to a spread spectrum underwater acoustic communication coding and decoding method, which comprises the following steps of: performing dual-channel coding modulation, sequentially performing CRC (cyclic redundancy check) coding, serial-parallel conversion, multi-system error correction coding and interleaving operation on an information bit stream at a transmitting end, then performing spread spectrum modulation on a code element by using a pseudorandom sequence, and finally mapping modulation output of an I channel and a Q channel into a baseband signal, and a spread spectrum underwater acoustic communication signal is formed through pulse shaping and up-conversion processing. According to the method, the communication accuracy is improved through a dual-channel incoherent and coherent redundancy decoding mode and an opportunity cross validation decoding mode.

This invention discloses a method for embedding a hidden two-dimensional dot matrix watermark using a splicable, cut-out, and fully embedded method. It includes: (1) data normalization encoding; (2) data information signature; (3) multiple error detection and correction encoding; (4) two-dimensional dot matrix; (5) pseudo-random scrambling of the dot matrix data; (6) scale matching with the associated carrier image; (7) generation of a two-dimensional dot matrix point cloud; and (8) embedding the hidden two-dimensional dot matrix point cloud into the associated carrier image. This invention is an information hiding method based on the combination of reliability encoding and printed image processing in modern communication technology using two-dimensional coded dot matrices. It can hide anti-counterfeiting marks, images, or text within printed images to achieve information anti-counterfeiting and information traceability. This method improves the anti-attack capability of the two-dimensional dot matrix and overcomes the problem of unreadable information caused by image damage or misjudgment during printing and optical image acquisition.

The invention discloses a two-dimensional code recognition and defect repair method and device, and the method achieves the effective integration of visible light, infrared and ultraviolet image features through the collection and preprocessing of a multi-modal image, greatly improves the feature recognition degree of a two-dimensional code under a complex background, and solves a problem that a conventional method is poor in adaptability to the complex background. According to the lightweight convolutional neural network defect detection model, pixel-level defect segmentation and multi-dimensional classification are realized, a defect severity grading mechanism is combined, an accurate basis is provided for intelligent defect evaluation, and the defect of lack of intelligent evaluation in the prior art is made up; for self-adaptive repair strategies of defects of different types and levels, the advantages of multiple algorithms such as texture synthesis, error correction coding and geometric correction are fused, and the repair precision of the two-dimensional code is greatly improved; a closed-loop verification mechanism of repair and recognition realizes linkage optimization of a repair process and a recognition result by dynamically adjusting repair parameters, and the problem of low efficiency caused by separation of repair and recognition is effectively solved.

A communication method, apparatus, and system are provided. An apparatus (such as a channel interleaver) can acquire a first coded bit sequence, wherein the first coded bit sequence is obtained by rate matching a second coded bit sequence; divide the first coded bit sequence into blocks; and perform channel interleaving on the blocks in a predefined order, wherein the channel interleaving is applied to the first coded bit sequence before modulation and transmission to the channel. The ability to divide the first coded bit sequence into blocks for channel interleaving enables block-level interleaving with higher parallelism, improving flexibility, simplifying operation, and achieving higher throughput, while also providing stable or better performance under high-order modulation or fading channels.

Communication devices, communication methods, and communication systems capable of achieving high communication performance. suggest. [Solution] The communication device is a communication device that performs wireless communication using multiple channels, and comprises a generation unit that generates multiple bit sequences with different contents by applying a predetermined encoding process based on a predetermined error correction coding scheme to a transmission data sequence, and a distribution unit that distributes the multiple bit sequences to the multiple channels.

The application discloses a 4G three-card single-waiting method and system applied to a monitoring camera, belongs to the technical field of SIM card communication, and specifically comprises the following steps: a multi-card virtual bearing layer is constructed; the multi-card virtual bearing layer is based on historical signal tracks of three SIM cards, environmental electromagnetic disturbance trends and base station congestion prediction results of a target area, link stability scores of the SIM cards are calculated in real time, a target SIM card currently used preferentially is automatically determined according to the scores, video streams collected by the monitoring camera are divided into continuous small segments, each segment is attached to error correction coding and card segment binding identification, and when it is detected that the link stability score of the target SIM card decreases to below a threshold value, the next video segment is switched to a standby SIM card with the highest score to be output; the application can maintain the continuity of video backhaul under complex electromagnetic environments, cross-region mobile scenes and base station congestion changes, and reduce the probability of interruption of monitoring pictures.

The present disclosure provides a method, apparatus, system, and device including a computer readable medium for managing error correction coding in a memory system. In one embodiment, a memory system includes a system controller configured to communicate with a host device and a memory device coupled to the system controller. The memory device includes at least one memory and a memory controller coupled to the at least one memory. The memory controller includes an error correction code circuit (ECC circuit) configured to perform error correction coding on received data, the data received from at least one of the system controller or the at least one memory.

In one embodiment, a first codeword is generated by error correction encoding a first individual payload, and a second codeword is generated based on bits associated with a second individual payload, the bits interleaving with bits associated with the first individual payload. Another embodiment includes encoding individual payloads by, for example, low density parity check (LDPC) encoding to generate encoded bits, the encoded bits including a first encoded bit generated by encoding a first individual payload, and a second encoded bit generated by encoding a second individual payload, where the encoded bits include a first encoded bit generated by encoding the first individual payload, and a second encoded bit generated by encoding the second individual payload, where the encoded bits include a first encoded bit generated by encoding the first individual payload, and a second encoded bit generated by encoding the second individual payload. The bits associated with the first individual payload are combined with the second individual payload. The first codeword and the second codeword each include encoded bits based on bits associated with the first individual payload. The first codeword in these embodiments may be decoded independently of the second codeword, and may also be decoded in conjunction with the second codeword.

The invention provides a ciphertext classification model anti-attack method introducing error correction codes. The method comprises the following steps: performing redundant information addition processing on original ciphertext data through an ECC (Error Correction Code) scheme; inputting the current adversarial sample into the target ciphertext classification model for forward propagation, and then calculating a model output result and a loss value of a real encryption algorithm label; solving the embedding gradient of the loss value relative to the current adversarial sample through back propagation; combining gradient income, cost and ECC residual error correction quota to construct a comprehensive evaluation index, and screening an optimal character for replacement to generate a candidate confrontation sample; the disturbance amplitude of the candidate adversarial sample is verified through the Hamming distance, and if the disturbance amplitude exceeds the maximum ECC error correction capability, discrete ECC safety projection is executed for constraint, and a new adversarial sample is obtained; and the confrontation sample with successful deception model is verified at the receiving end. According to the method, the integrity and the concealment of communication data are kept while the attack is effectively resisted.

The present disclosure relates to error correction coding based on generalized concatenated codes with restricted error values for code-based cryptography. The error correction encoding comprises encoding the information according to a McEliece cryptosystem or according to a Niederreiter cryptosystem, in each case using an error vector containing at most t ε non-zero error values; and a combination of: a permutation operation, a scrambling operation; and a coding operation involving a p-ary generalized concatenated code, GCC, having an error correction capability t up to which it can correct all possible error patterns. The GCC comprises multiple outer codes A(1) with different dimensions n1 and 1=0, . . . ,N, and an inner code B, the inner code B being one of an error correction code over Gaussian integers, an error correction code over Eisenstein integers, or a binary BCH error correction code, wherein q is a natural number with q>2 in the case of an error correction code over Gaussian integers or Eisenstein integers and with q=2 in the case of a binary BCH error correction code. A corresponding decoding method comprises applying erase decoding such that all decoding errors, if any, are recognized during the decoding of the GCC.

The invention discloses an electric energy meter data adaptive fragmentation transmission communication method and system based on multi-dimensional perception, and the method comprises the steps: enabling an intelligent electric meter to extract the fingerprint stability characteristics of a power supply voltage waveform, detecting a load switching edge event, generating perception data, and uploading the perception data; the concentrator generates a channel quality map reflecting a physical channel state of a power grid according to sensing data of each electric meter, and generates and issues a dynamic fragmentation strategy parameter defining a corresponding relation between a channel quality grade, a network load grade and a recommended fragmentation size and an error correction coding scheme in combination with a real-time network load state; the intelligent electric meter generates a final transmission strategy according to the voltage fingerprint characteristics, the load event and the strategy parameters in combination with the key level of the to-be-transmitted data; processing to-be-transmitted data into fragments according to the strategy, and sending the fragments; the concentrator receives and decodes the data fragments to obtain reading data. The method can be adaptive to channel and network changes, and the copying and reading reliability and efficiency are improved.

Examples described herein utilize a multi-layer neural network, such as a multi-layer recurrent neural network to decode encoded data (e.g., data encoded using one or more encoding techniques). The neural network and / or recurrent neural network can have non-linear mapping and distributed processing capabilities, which can be advantageous in many systems that employ the neural network decoder and / or recurrent neural network. In this manner, the neural network or recurrent neural network described herein can be used to implement an error correction coding (ECC) decoder.

Joint error correction coding involves error correction encoding of multiple individual payloads to generate a codeword. The codeword includes a self-decodable encoded block generated by error correction encoding a first individual payload, and another encoded block generated by error correction encoding a second individual payload with which a portion of the first individual payload is combined. The portion of the first individual payload that is to be combined with the second individual payload is determined based on an ordering of bits of the first individual payload. The individual payloads or encoded blocks are decodable independently of each other, and the self-decodable encoded block and the other encoded block are also jointly decodable.

In some examples, a system groups a multitude of blocks of coded data into first segments, where each first segment comprises several blocks from the multitude of blocks, and the coded data is based on the application of a deletion correction coding to input data. The system stores the first segments in corresponding error domains of a first set of error domains in a first deletion correction configuration, where the first deletion correction configuration allows error recovery in response to lost coded data in a specified number of error domains. The system transitions from the first deletion correction configuration to a second deletion correction configuration by reorganizing the first segments into second segments, where each second segment comprises a different number of blocks of coded data than a first segment.

At least one aspect of the technical solutions is directed to a system. The system can include a first access point configured to generate a preamble for a network packet of a wireless local area network (WLAN). The first AP can be configured to include, into the common field of the preamble, one or more basic service sets (BSS) colors associated with the first AP and the second AP. The first AP can be configured to include, into a subfield of the user field for indicating error correction coding, an indication of association of the client device with the first AP or the second AP based on the one or more BSS colors. The first AP can be configured to transmit the network packet to be processed by the client device for CBF communication of the network packet according to the one or more BSS colors and the indication.

A communication method and apparatus, belonging to the technical field of communications, in the method, M reference signals are segmentally indicated by information (such as first information) obtained by a terminal through error correction coding. When a terminal sends M reference signals to a network device on a scheduling-free resource, the M reference signals may change due to interference between different users when received by the network device. However, the indication information of the reference signals is obtained through error correction coding, so that the network equipment determines the information used for indicating the reference signals according to the received reference signals, and performs error correction decoding on the information so as to recover and obtain the first information. Therefore, the network equipment can decode the scheduling-free transmission through the first information, so that decoding can still be performed when pilot frequency resources of different users for the scheduling-free transmission have conflicts.

The invention discloses a discrete fragmentation transmission method and system for an under-secret meteoric trail channel, and the method comprises the steps: a transmitting end builds a communication link with a receiving end through employing an active blind detection mechanism, and locks a communication frequency point; the method comprises the following steps: after a communication link is established, a sending end performs deletion error correction coding on original data to be transmitted to generate a coded data stream, splits the coded data stream into a plurality of independent discrete fragmented data, and transmits the data on a locked communication frequency point according to a set sequence; the receiving end performs integrity verification on each piece of received discrete fragmented data and requests the sending end to retransmit the current discrete fragmented data when the verification fails; and the receiving end recovers the original data in a cross-window accumulation mode. The utilization rate of the weak under-secret meteor channel can be greatly improved, the waiting time of a communication system is effectively shortened, and the reliability of the system is improved.

The invention belongs to the technical field of communication, and particularly relates to an interphone remote communication method and system, and the method comprises the steps: carrying out the framing processing of a collected original voice signal at a source end interphone, and generating a voice frame sequence with a fixed time length; performing forward error correction coding on each voice frame and adding a timestamp mark to form a coded voice packet with a time sequence identifier; injecting the coded voice packet into a multi-hop network formed by a plurality of relay nodes, and executing dynamic path selection and voice packet priority scheduling based on link state prediction at each relay node; according to the system, forward error correction coding voice frames with timestamps are introduced at a source end, dynamic path selection based on link state prediction and voice frame priority preemptive scheduling are implemented in a relay network, and a multi-path redundancy receiving and missing frame interpolation reconstruction mechanism based on linear predictive coding are adopted at a destination end. And transmission time delay and jitter accumulated in the multi-hop forwarding process are effectively eliminated.