99 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.

Provided in the embodiments of the present disclosure are a mapping method for probabilistic shaping and a reception processing method for probabilistic de-shaping. The mapping method comprises: on the basis of a target amplitude probability distribution and a bit to be shaped, acquiring a shaping amplitude bit by means of a first decoder, which is dedicated to a channel code; and mapping the shaping amplitude bit to form a modulation constellation point. In the embodiments of the present disclosure, decoding can be performed according to a target amplitude probability distribution and by means of a first decoder, which is dedicated to a channel code, such that a shaping amplitude bit is acquired, and the shaping amplitude bit is enabled to be close to the target amplitude probability distribution, thereby realizing a relatively small rate loss and a relatively low shaping complexity.

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.

Various embodiments comprise systems, methods, architectures, mechanisms and apparatus for optical, radio frequency (RF), and / or acoustic data transmission by dividing each of one or more sequences of channel coded bits d into N blocks thereof, which are respectively spatially modulated (SM) with respective pilot sequences and mapped to constellations to provide thereby respective symbol streams, which are modulated in accordance with orthogonal signal division multiplexing (OSDM) to provide respective SM-OSDM signals, which are transmitted via optical sources, RF antennae, acoustic transducers, and the like during respective timeslots such that a receiver associated with a plurality of receiving devices may reconstruct the bitstream used to form the one or more sequences of channel coded bits d.

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.

An apparatus and method for video codec-aware RAN configuration and unequal error protection coding is disclosed. The apparatus includes a processor that detects a video coded traffic stream and a video codec specification used to encode the traffic stream, determines awareness of application data units of traffic of the video coded traffic stream as video coded network abstraction layer (NAL) units, aligns the NAL units to partitions of PHY transport elements and subsequent channel coding elements for video coded traffic aware PHY transport, determines allocation of channel coding rates of the partitions, and applies forward error correction coding taking into account the determined allocation of channel coding rates of the video coded traffic aware PHY transport to partitions of the channel coding elements.

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.

Methods, systems, and devices for wireless communications are described. A transmitting device may allocate a set of information bits into multiple subsets of bits corresponding to channel instances of a channel. The transmitting device may encode a first subset of bits according to a first channel coding scheme for a first channel instance and a second subset of bits according to a second channel coding scheme for a second channel instance. The transmitting device may input encoded subsets of bits to a polarizing transform, which may output a set of encoded polarized bits that are transmitted to a receiving device. Upon reception of the encoded polarized bits, the receiving device may apply a depolarizing transform to obtain multiple subsets of bits corresponding to channel instances of the channel, and may decode each subset of bits according to a respective channel coding scheme.

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.

The invention provides a multichannel photon flight time processing circuit, and relates to the technical field of laser radar three-dimensional imaging. The multichannel photon time-of-flight processing circuit comprises a time-to-digital conversion circuit which comprises a plurality of parallel time-to-digital conversion channels and is used for performing time quantization processing on a first signal at a current moment based on a target time-to-digital conversion channel in the plurality of parallel time-to-digital conversion channels and outputting a digital code value; the delay circuit is used for receiving a plurality of first signals according to a time sequence and outputting delay signals corresponding to the first signals; the first circuit is used for determining a channel code of the first signal at the current moment according to the delay signal corresponding to the first signal at the current moment, and the channel codes of two first signals at adjacent moments are different; and the second circuit is used for determining a target time-digital conversion channel from a plurality of parallel time-digital conversion channels according to the channel code of the first signal at the current moment.

The invention relates to a resource allocation method and device for a video recorder and the video recorder, and the method comprises the steps: decoding received multi-channel code stream data based on a plurality of video decoding channels to obtain corresponding multi-channel video data, and transmitting the multi-channel video data to a corresponding video processing module; processing the video data based on the first processing channel of each video processing module to obtain a corresponding preview video; and when a target decoding channel in the plurality of video decoding channels starts an intelligent service, processing video data corresponding to the target decoding channel based on a second processing channel of the target decoding channel to obtain a corresponding intelligent service video, and the intelligent service video is used for performing intelligent analysis to obtain an analysis result, and the analysis result and the corresponding preview video are displayed in an overlapping manner. The problem of insufficient decoding resources of the video recorder is solved.

The present invention provides a method and device for checking high-frequency market data: the method comprises: step 102: obtaining high-frequency market data, which includes snapshot data, transaction data, transaction data and K-line market data; step 104: if the maximum business sequence number under different channel codes in the transaction data and the transaction data does not correspond to the total number of the transaction data and the transaction data, the high-frequency market data is judged to be erroneous; step 106: when the high-frequency market data is erroneous, an error record is generated and an email is sent to the corresponding recipient. The method and device for checking high-frequency market data provided by the present invention checks whether the high-frequency market data obtained through different channels are missing, garbled, etc., thereby improving data quality and greatly reducing labor costs.

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.

The embodiment of the present application discloses a direct memory access circuit, an operation method and a method for generating access instructions. The direct memory access circuit is used to access a memory according to an instruction, and includes a first-in-first-out buffer, a first channel controller and a second channel controller. The operation method of the direct memory access circuit includes: decoding the instruction to obtain a first channel code and a second channel code, wherein the first channel code corresponds to the first channel controller, and the second channel code corresponds to the second channel controller; obtaining a state of the first channel controller from the first-in-first-out buffer according to the first channel code; selecting the second channel controller according to the second channel code; and controlling the second channel controller according to the state.

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.

An interleaved Analog-to-Digital Converter (ADC) has a reference channel receiving an attenuated analog input. The reference channel is also calibrated to remove capacitor-ratio mismatch, static, and dynamic mismatches and produces a linear replica of the data channels with negligible nonlinear errors due to attenuation. Nonlinear errors on the data channels are corrected by Harmonic Distortion HD2 and HD3 coefficients. A counter increments when the sign bit of a nonlinear-corrected channel code is negative. The count is doubled and reduced by a number of samples to generate a HD2 cost function that adjusts the HD2 coefficient in a LMS loop. A HD3 correlation is generated by multiplying the reference channel output by its difference with the nonlinear-corrected channel code. The sign of the correlation code increments a second counter which generates a HD3 cost function whose sign bit adjusts the HD3 coefficient. These 2 counters generate cost functions, eliminating sample storage.

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.