74 results about "Channel code" patented technology

The invention discloses a soft network system capable of expanding a transmission mode and an implementation method, and the system comprises an equipment resource mapping management unit which automatically generates a unique channel code based on a native hardware interface and establishes a multi-dimensional mapping relation; the heterogeneous interface data acquisition unit is used for monitoring various hardware interfaces in a kernel space in parallel and realizing zero-copy data transmission through a three-buffer lockless annular buffer area; the transmission abstraction and dynamic expansion unit realizes transmission mode modularization in a plug-in form and supports atomic hot plug during operation; the protocol analysis and service processing unit is used for realizing unified scheduling and fault isolation in a single process through a dynamic link mechanism; and the cross-layer monitoring and self-healing unit realizes automatic switching based on a session state machine and a redundant channel. According to the method, the code complexity is reduced from O (N * M) to O (N + M), and the time lt is extended; fault switching is carried out at 1s; and the hardware cost is reduced by more than 40%, so that the method is particularly suitable for power and environment monitoring scenes with more than 1000 devices and more than 15 protocols, and has high creativity.

The invention provides a real-time telemetry data multivariate presentation and comparative analysis system for batch production satellites. The system comprises a front end and a rear end, the front end comprises a page management module and a corresponding control, and obtains telemetering data according to the selected satellite code and telemetering channel code through multiple types of controls so as to realize real-time telemetering data multivariate presentation and comparative analysis of mass-produced satellites; and the rear end is responsible for receiving and storing multi-satellite telemetering data, maintaining the latest real-time telemetering information table, triggering all controls to update the displayed telemetering data, and carrying out basic processing and interpretation on the telemetering data. According to the method, under the trend that satellite batch production and satellite telemetry data interpretation requirements are improved, a single person carries out conventional monitoring on multiple satellites at the same time, and when the multiple satellites in batch production cooperatively test or work cooperatively, the requirements for telemetry data joint monitoring and comparative analysis of the multiple satellites are met.

The invention discloses a multi-level coding modulation transmitting method suitable for a hybrid automatic repeat request system, which belongs to the wireless communication technology and comprises the following steps of: performing high-code-rate channel coding on a first information bit sequence of a transmitting end to obtain a first coding bit sequence, and performing low-bit-rate coding on the second information bit sequence to obtain a second coded bit sequence. In the first transmission, the first coded bit sequence and the second coded bit sequence are combined and pass through an interleaver to obtain a first transmission bit sequence, and the first transmission bit sequence is modulated to obtain a first transmission modulation symbol sequence; and if the first transmission fails, performing channel coding with a lower code rate on the second group of information bit sequences to obtain a first retransmission bit sequence, and modulating the first retransmission bit sequence to obtain a first retransmission modulation symbol sequence. Compared with a BICM scheme with the same spectrum efficiency, the transmitting method provided by the invention has the advantages that the demodulation and error correction code decoding complexity is greatly reduced, and meanwhile, the performance similar to that of an incremental redundancy HARQ is obtained.

The invention belongs to the technical field of power load prediction, and relates to a power load prediction method based on interpretable multi-mode enhancement, which comprises the following steps: 1, constructing a text representation mode of an original load time sequence through a multi-mode enhancement module; 2, time sequence modal information and text representation information of the load are embedded into a high-dimensional vector space through a two-channel coding module; 3, receiving an embedded vector of a time sequence mode through a multi-mode prediction module, and taking a representation vector of a multi-mode text as input; 4, realizing an interpretable multi-mode alignment module; according to the method, the effects among the multi-modal information are divided into uniqueness, redundancy and collaboration; by constructing a negative sample pair for training, alignment of multi-modal information representation is enhanced, and then the prediction performance of the model is improved.

A UE of a wireless communication network first receives a modulation and coding scheme index IMCS for demodulating a physical layer data channel of the network. The UE then demodulates the physical layer data channel with a non-square quadrature amplitude modulation (NS-QAM) having a modulation order and code rate corresponding to a spectral efficiency (SPEFF) substantially equal to a SPEFF of a square QAM (S-QAM) SPEFF indicted by the IMCS, where the NS-QAM has an effective channel code rate no larger than the code rate for which the UE may skip decoding a transport block in an initial received transmission.

The invention discloses a near-field channel state information feedback method under a super-large scale array based on Transform, which comprises the following steps: in a downlink XL-MIMO system in a near-field area, a user side performs two-dimensional matrix processing on acquired CSI data and transmits the processed CSI data to a coding end; two-channel coding compression is carried out on the CSI matrix, a first channel uses an encoder to extract channel related characteristics, and a second channel enables an original CSI matrix to pass through a linear network so as to reserve original information; compressing the output of the two channels, and splicing to generate a low-dimensional code word to be fed back; the base station side decoding end splits the low-dimensional code word and decompresses the low-dimensional code word of the corresponding channel; decompressed dual-channel code words are respectively input to two ends of a decoder; and carrying out size change on the output of the decoder to obtain the estimated original CSI. According to the method, angle and distance information of a near-field channel is fully utilized, and efficient CSI compression and high-precision reconstruction are realized.

This application discloses a code block processing method, apparatus, device, and readable storage medium, relating to the field of communication technology, to ensure the reliability of MTN networks. The method includes: if an MTN channel code block carrying an fgMTN channel is incorrectly marked, or the code block contains an invalid synchronization header, or the code block is a control code block with an invalid type field, or the code block is an erroneous code block, replacing the fgMTN channel code block carried within the MTN channel code block with the erroneous code block. Embodiments of this application can ensure the reliability of MTN networks.

The present application provides a method and communication device for rate matching of a convolutional code, wherein a puncture pattern of a second codeword at a second code rate is obtained based on a puncture pattern of a first codeword at a first code rate, wherein a second puncture position set of the second codeword is a subset of the first puncture position set of the first codeword. When a transmitting end device reduces the code rate from the first code rate to the second code rate, redundant bits are transmitted at positions in the second puncture position set that are the complement of the first puncture position set. Compared to the first puncture position set, the second puncture position set can obtain more incremental redundant bits, thereby reducing the channel coding rate and improving the decoding performance of the convolutional code.

The invention discloses a service channel interaction data security detection method and system based on spatial-temporal feature analysis. According to the method, channel payment interaction data including channel codes, IP positioning data, account number attribution data and the like are obtained, spatial-temporal characteristic analysis is carried out, and consistency, legality and logicality checking is carried out on the data from the time dimension, the space dimension and the relevance dimension in sequence. And the security assessment engine performs comprehensive risk scoring on the data in combination with attributes such as confidentiality, integrity and authenticity, and generates a security alarm. The system integrates functions of data acquisition, feature analysis, evaluation, alarm and the like through modular design, supports multi-data source access, self-learning ability and multiple alarm modes, can adapt to interaction of different types of service channels, and improves security detection and risk early warning ability of access data.

The invention belongs to the technical field of aircraft control simulation, relates to a flight simulator dynamic encoding and decoding system and method based on rule decoupling, and aims to solve the problems that an existing flight simulator encoding and decoding method is low in maintenance efficiency, long in switching period and insufficient in compatibility. The method comprises the following steps: configuring a file module and a three-layer architecture, wherein a network connection layer obtains connection information of simulation equipment; the variable coding and decoding layer stores predefined coding and decoding rules and modifies the corresponding coding and decoding rules according to the connection information; the message analysis layer encodes and decodes the message according to the encoding and decoding rule, and maps and interacts with the logic variable; the coding and decoding rule comprises a device coding and decoding rule for integrating communication information of each device, a channel coding and decoding rule for extracting message information of each channel and a variable coding and decoding rule for positioning a logic variable. According to the invention, codes and configuration are decoupled, dynamic coding and decoding are carried out, flexible switching of a code-modification-free adaptive protocol and configuration is realized, and the compatibility is better.

The application discloses a kind of LDPC code decoding methods for reducing error flat layer based on column layering, belong to channel coding technical field.The decoding of LDPC code is susceptible to the influence of trap set in high signal-to-noise ratio area, information transmission approach is blocked in the decoding process, leading to decoding failure, performance curve drops and flattens, limiting its application in some low error flat layer required scenarios.This method groups all variable nodes in the decoding process by column, all variable nodes in a group are processed in parallel, after decoding failure caused by decoding into trap set, the process of post-processing is increased, according to the check result of check node, the weight of check node transmitting information to variable node is modified, and the final result is obtained by decoding again.The application can effectively make the decoding process jump out of trap set, significantly improve the performance of LDPC code in high signal-to-noise ratio area, and reduce error flat layer.

The invention provides a method for writing test parameters into a single-board memory, which comprises the following steps: establishing a channel pin comparison table associated with each test single board, the channel pin comparison table indicating that an ith channel in M channels corresponds to a jth pin in N pins of the test single board where the ith channel is located; converting each test code transmitted by the M channels at the first time into a corresponding group of test parameters; maintaining a channel code comparison table in the test buffer, wherein the channel code comparison table stores a test parameter corresponding to the ith channel in the M channels at the first time; and according to the channel pin comparison table and the stored channel code comparison table, writing the test parameter corresponding to the ith channel at the first time into the entity address of the single board memory of each corresponding test single board.

A UE of a wireless communication network receives, for the first time, a modulation and coding scheme index (IMCS) for demodulating a physical layer data channel of the network. The UE then demodulates the physical layer data channel with a non-square quadrature amplitude modulation (NS-QAM) having a modulation order and a code rate corresponding to a square QAM (S-QAM) spectral efficiency (SPEFF) substantially equal to the SPEFF indicated by the IMCS, wherein the NS-QAM has an effective channel code rate that is not greater than a code rate at which the UE can skip decoding of an initially received transmission transport block.

The present disclosure relates to a channel coding method and device, electronic equipment, storage medium and computer program product, the method comprising: at a data sending end, encoding a first k-ary remainder vector based on a target RRNS encoder to obtain a first n-ary remainder vector; transmitting the first n-ary remainder vector from the data sending end to a data receiving end using a target channel; at the data receiving end, obtaining a second n-ary remainder vector from the target channel, and decoding the second n-ary remainder vector based on a target RRNS decoder to obtain a third n-ary remainder vector, the target RRNS decoder comprising at least one target RRNS encoder, and the third n-ary remainder vector being obtained after error correction of the second n-ary remainder vector. The embodiments of the present disclosure are effectively applicable to high-performance low-latency data transmission scenarios, and the decoding process can reuse the encoder logic, thereby increasing the hardware circuit reusability and expandability.

This invention relates to the field of adaptive semantic coding, specifically to an adaptive relay semantic coding method based on deep learning. The scheme includes: constructing a relay semantic communication system based on a deep neural network, the system consisting of a transmitter, relay nodes, and a receiver, including a direct link from the transmitter to the receiver, a relay receiving link from the transmitter to the relay, and a relay forwarding link from the relay to the receiver. A half-duplex DF relay system is adopted, i.e., the relay operates on two orthogonal time slots or frequency bands, such that the relay's reception and decoding of block t corresponds to its forwarding of block t+1. At the transmitter, a bitstream is generated through deep semantic source coding and entropy coding and interfacing with digital channel coding. Simultaneously, half-duplex DF relay is introduced, and cooperative gain is obtained through random binning and two-stage continuous decoding. An end-to-end distortion calculation model is established under finite code length conditions, and finally, joint optimization is performed. This invention is applicable to adaptive semantic coding.

The embodiment of the invention discloses a picture processing method and device. The method is executed on a C / C + + layer, and comprises the following steps: in response to a detected picture shooting request, calling a dynamic library corresponding to a camera function, and obtaining initial picture data shot by a camera through the dynamic library; performing signature processing on the initial picture data to obtain initial picture data including a digital signature; performing format conversion and alpha channel coding processing on the initial picture data to obtain intermediate picture data including an alpha channel coding value, the intermediate picture data being used for being added with a watermark by a client to obtain a target picture; and in response to a storage or uploading request for the target picture, verifying the digital signature and the alpha channel coding value included in the target picture, and detecting whether the target picture has a tampering risk or not according to a verification result. Through the method, the tampering difficulty of the picture data can be increased, meanwhile, whether the picture data has the tampering risk or not can be effectively detected, and the authenticity of the picture data is ensured.

The invention provides a platform cascade information synchronization method and a platform cross-domain interaction method, and relates to the technical field of the Internet of Things, and the method comprises the following steps: a superior platform sends a request for querying equipment association information of the superior platform to a storage layer of the superior platform; the storage layer of the superior platform inquires and obtains an equipment main body data model of the current-level platform according to the equipment id of the current-level platform contained in the request, and returns an equipment main body data model response of the current-level platform to the superior platform; the equipment main body data model is defined and described by a triple of'equipment id, equipment code and channel code '. According to the method, after the superior platform uses the new equipment data model, the data model contains the equipment key information, the incidence relation of the storage layer can be directly changed, the platform at the level does not need to be accessed through cascading, and the storage layer directly returns the result to the superior platform, so that data conversion does not need to be performed during cross-domain information synchronization, and the efficiency is improved. And the synchronization performance is greatly improved.

In embodiments, provided is an electronic device in a communication system or a broadcasting system. The electronic device may comprise at least one processor, and a memory for storing instructions. The instructions, when executed by the at least one processor, may cause the electronic device to: acquire a signal encoded through a channel code; acquire a first input sequence for the signal; determine a change region in the first input sequence on the basis of a lifting size for the channel code and the number of bits to be encoded in a code block; acquire second candidate input sequences corresponding to combinations in which each value of the change region is different on the basis of the first input sequence; and provide a final decoding result by decoding each candidate input sequence from at least some of the second candidate input sequences.

The invention relates to an impedance adjusting circuit and a semiconductor device including the same. An impedance adjustment circuit includes a calibration circuit and a code update circuit. The calibration circuit performs an impedance adjustment operation to generate a source impedance code in response to activation of the impedance adjustment enable signal. The code update circuit performs a first channel code update operation according to the source impedance code to update the first channel impedance code when a first channel code update request signal is input. When a second channel code update request signal is input, performing a second channel code update operation according to the first channel impedance code to update the second channel impedance code; and blocking the second channel code update operation when the second channel code update request signal is input while the first channel code update operation is performed.

This application relates to a method and device for converting a high-resolution analog quantity using a low-resolution DAC. The method includes: obtaining a target resolution and a reference voltage; setting the number of output channels of the low-resolution DAC chip and the output resolution corresponding to each output channel according to the target resolution and the existing resolution of the low-resolution DAC chip; calculating an output code value according to the target resolution and the target output voltage; calculating the channel code value of each output channel and the channel voltage of each output channel according to the output code value and the number of output channels; splitting the parallel data according to the number of output channels, the output resolution, and the channel voltage to obtain a plurality of low-resolution data code values, which are sent to the DAC chip and output as the channel output voltage; processing the channel output voltage of each output channel to obtain a high-resolution stable constant voltage output of the target output voltage. This application can convert a high-resolution analog quantity using a low-resolution DAC chip.

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a configuration defining an event that triggers an event-based handover, the configuration further defining one or more of a waveform, modulation, or channel coding associated with the event-based handover. The UE may perform transmission using one or more of the waveform, the modulation, or the channel coding based at least in part on the occurrence of the event. Numerous other aspects are described.

The application discloses a data broadcast method, a service server, a terminal device and a storage medium. The method comprises the following steps: acquiring a plurality of service data of different service types to be broadcast, and determining a corresponding broadcast channel of each service data in a preset broadcast channel based on the service type of each service data in the plurality of service data; using a preset channel layer data protocol, performing channel coding on each service data based on the corresponding broadcast channel of each service data, to obtain a plurality of groups of single-channel data frames corresponding to the plurality of service data; using a preset link layer data protocol, performing link coding on the plurality of groups of single-channel data frames based on a preset channel priority of the corresponding broadcast channel of each service data, and determining the coded data as to-be-broadcast data; and performing data broadcast on the to-be-broadcast data through the preset broadcast channel. Through the technical scheme, the efficiency of data broadcast is improved.

The present disclosure relates to a communication technique of fusing a 5G communication system for supporting higher data transmission rate beyond a 4G system with an IoT technology and a system thereof. The system may be used for an intelligent service (for example, smart home, smart building, smart city, smart car or connected car, health care, digital education, retail business, security and safety related service, or the like) based on the 5G communication technology and the IoT related technology. The present disclosure discloses a method and apparatus for inserting an index into a code block as a unit in which a channel code is executed and transmitting the same.

The invention discloses a signal modulation method for spaceflight. Data are modulated based on a direct sequence spread spectrum and Gaussian minimum frequency shift keying modulation technology. Compared with DSSS-BPSK modulation, satellite EMC of multi-frequency-point emission is improved, the frequency spectrum captured by PMF-FFT is more characteristic, the phenomenon of mistaken capturing is not prone to occurring, and due to the fact that the single-path code rate is half of the DSSS-BPSK, the chip migration effect is easy to eliminate.

A coded bit transmission method and apparatus, to improve spectrum resource utilization and a data rate of a Wi-Fi system, where the method includes: A sender performing channel coding on information bits according to a used MCS, to generate coded bits; and the sender distributing the coded bits to a plurality of channel sets or a plurality of resource units according to a distribution rule. The MCS is an MCS used for each of the plurality of channel sets, or an MCS used for each of the plurality of resource units.

The invention discloses a multi-channel optical diffraction neural network image classification method based on inter-class similarity decomposition, and the method comprises the steps: calculating a class center vector through a pre-training network, constructing an inter-class similarity matrix, and decomposing a multi-class task into a plurality of sub-tasks; configuring an independent optical channel for each subtask, and generating a multi-channel coded word table; constructing a multi-channel optical diffraction neural network, and synchronously training each channel by adopting a joint loss function; during reasoning, a test image is propagated through a network, and a final classification result is obtained through coding word decoding. According to the method, decoupling and parallel optical calculation of multi-class tasks are realized, and the accuracy and expandability of the shallow optical diffraction neural network in multi-class classification are effectively improved.

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates than a 4G communication system, such as LTE. A method for decoding a channel code by a reception device in a communication system according to an embodiment of the present invention comprises the steps of: generating a first input sequence on the basis of bits that are received from a transmission device and encoded with a channel code; determining, on the basis of the structure of the channel code, a search range of, in the first input sequence, at least one element to be changed in order to generate a plurality of second input sequences; determining at least one element to be changed in order to generate the one or more second input sequences on the basis of the search range; generating the one or more second input sequences by changing the at least one element; and determining a final decoding result by decoding each of the one or more second input sequences.

The embodiment of the application discloses a block storage-based cutting method and device, the method comprising: obtaining a plurality of storage blocks to be allocated; numbering the plurality of storage blocks according to a preset order, and establishing an allocation index for the plurality of storage blocks according to the numbering; pre-allocating the plurality of storage blocks to a plurality of channels according to channel parameters of the audio / video storage channels and the allocation index, and adjusting the storage blocks allocated by the channels according to changes of the storage channels and / or storage disks; the channel parameters comprising: channel code rate, channel capacity, channel number and channel retention period; the changes of the storage channels and / or storage disks comprising: deleting a channel, adding a channel, channel offline, channel re-online, deleting a storage disk and adding a storage disk. Through the embodiment, the time consumed by block selection is eliminated, the recorded audio / video is prevented from being lost, the utilization rate of the storage blocks is improved, the integrity and stability of the monitoring storage system are improved, and the read / write efficiency is improved.

The invention relates to the technical field of Internet, and provides a load balancing scheduling method and device, electronic equipment, a storage medium and a computer product, and the method comprises the steps: responding to a user service request, and if the user service request does not have a center identifier, executing the load balancing scheduling; a to-be-decided block code determined according to the user service request is matched with a code of any code group in the first code group set and the second code group set, and the user service request is forwarded to a center associated with a target center identifier after the target center identifier is set for the user service request; wherein the first coding group set comprises coding groups obtained by carrying out knapsack problem solving based on a historical coding group set; the second coding group set comprises residual coding groups in the historical coding group set; the historical code grouping set is determined based on the user information, the regional code and the source channel code in the historical user service request. According to the invention, the request success rate of the user during load balancing of double-center traffic scheduling can be improved.

The embodiment of the invention provides a model training method and device. A source coding and decoding model and a channel coding and decoding model can be jointly trained. The method comprises the steps that a model training device obtains channel coding and decoding algorithm information and information source coding and decoding algorithm information, the channel coding and decoding algorithm information is used for indicating a model structure of a first coding and decoding model, and the information source coding and decoding algorithm information is used for indicating a model structure of a second coding and decoding model; the model training device carries out training based on the channel coding and decoding algorithm information and the information source coding and decoding algorithm information to obtain at least one of the weight of the first coding and decoding model and the weight of the second coding and decoding model.