55results about "Correct operation testing" patented technology

The invention provides a satellite service data analysis method and system based on a dynamic protocol, belongs to the technical field of satellite real-time data processing, and is used for analyzing satellite data downloaded by a data transmission link so as to complete closed-loop verification on a satellite data transmission core data flow path. The method depends on the support capability of an on-satellite data transmission system for a multi-channel downloading mode, and the independent, lossless and time sequence fidelity binary disk falling capability of ground detection equipment for each channel data. The method comprises the following steps: acquiring original downlink data highly consistent with an on-orbit state; secondly, adopting a scheduler model to carry out structured segmentation and affiliation allocation on the AOS frame after the original data stream is restored; and finally, dynamically loading a corresponding protocol description file for each data unit, and performing field-by-field decoding according to a mapping rule of binary data and readable engineering quantity to generate structured table data. The method can be widely applied to whole-satellite integration test scenes of various remote sensing satellites such as optics, SAR and infrared.

The invention discloses a subcarrier-level diversity combining method and subcarrier-level diversity combining equipment for multi-frequency diversity, and relates to the technical field of wireless communication. The method comprises the following steps: receiving a plurality of frequency points bearing the same service, and respectively carrying out orthogonal frequency division multiplexing demodulation on each frequency point to obtain a symbol estimation value; calculating a soft decision log-likelihood ratio and a reliability vector according to the symbol estimation value; aligning the time deviation, the carrier frequency deviation and the sampling rate deviation generated by frequency crossing of each frequency point based on each symbol estimation value; performing decorrelation processing on the aligned soft decision log-likelihood ratio to obtain a decorrelated soft decision log-likelihood ratio, and performing merging operation on the decorrelated soft decision log-likelihood ratio according to the aligned reliability vector to obtain a merged soft decision log-likelihood ratio; and decoding the merged soft decision log-likelihood ratio to obtain a decoding result, and adjusting the merging operation according to the decoding result. By implementing the technical scheme provided by the invention, the diversity combining accuracy can be improved.

Systems and methods are provided for detecting bit errors and further processing bit error information. A method, according to one implementation, includes the step of receiving a binary test sequence pattern generated by a pattern generator at an input to a digital communications system under test, wherein the binary test sequence pattern includes a plurality of sub-patterns. The method also includes the step of receiving an output binary sequence from an output of the digital communications system. Also, the method includes comparing the binary test sequence pattern with the output binary sequence to detect bit errors. Based on correlation characteristics between the bit errors and each of the sub-patterns, the method also includes the step of determining whether the bit errors are caused by random factors or are caused by deterministic factors associated with the digital communications system.

Devices, networks, systems, methods, and processes for determining receiver performance metric of a network device are described herein. A device may utilize one or more error patterns associated with the network device to retrieve one or more symbol errors from the one or more error patterns. The device can determine an error threshold for a segment based on a predefined Bit Error Rate (BER) level for the segment. The device may generate a performance metric for the segment based on the error threshold and the retrieved symbol errors. The device can generate a receiver performance metric based on performance metrics of segments. The device may determine a Code Error Ratio (CER) and can predict a Frame Loss ratio (FLR) associated with the network device based on the CER.

This disclosure generally relate to a method and system for network policy simulation in a distributed computing system. The present technology relates techniques that enable simulation of a new network policy with regard to its effects on the network data flow. By enabling a simulation data flow that is parallel and independent from the regular data flow, the present technology can provide optimized network security management with improved efficiency.

The present disclosure provides a computer implemented method for mapping signal ports in a quantum computer control system comprising a plurality of signal ports, the method comprising outputting at least one test signal on at least one of the signal ports of the quantum computer control system, measuring at least one response signal on at least one of the signal ports of the quantum computer control system, and determining a port mapping for the quantum computer control system based on the at least one test signal, and the at least one response signal. Further, the present disclosure provides a respective quantum computer control system and a respective quantum computer.

This invention discloses a frame header detection method and system for configurable multi-rate SDH lines, relating to the field of optical synchronous digital transmission. The method includes: acquiring the serial data stream rate; converting the serial data stream on the SDH line into parallel data; truncating the parallel data into eight segments of different lengths and buffering them into eight corresponding registers; performing bit alignment based on the A1 byte hit result of the data of different lengths; aligning the bit-aligned parallel data based on the A2 byte and outputting a frame header signal; judging the accuracy of each frame header and outputting valid data frames and valid frame header signals; obtaining the current system state based on the output valid frame header signals, and determining that a true frame header has been detected when the current system state is a fixed-frame state. This invention can flexibly configure frame headers for detecting multiple SDH rates, has high accuracy in frame header detection, and continuously provides indications of fixed-frame and frame loss states.

A universal asynchronous receiver / transmitter includes a transmit register including information to be transmitted, a receive register including received information, a frame error check circuit that evaluates contents of the receive register for a frame error, and a control logic. The control logic routes contents of the transmit register to the receive register. During transmission of the contents of the transmit register to the receive register through a reprogrammable pin, the control logic modifies a bit inversion register to produce modified contents to be provided to the receive register. The modified contents cause a frame error. The control logic determines whether the frame error check circuit detects the frame error.

A low voltage differential serial (LVDS) communication system includes a system-on-chip (SoC) which includes a transmitter configured to serially transmit data, a receiver configured to serially receive data, a loopback control circuit configured to provide transmitted test data from the transmitter directly to the receiver during testing, and a built-in self-test (BIST) circuit. The BIST circuit controls testing by setting a voltage level of a common mode voltage for the transmitter, providing a test data pattern for transmission by the transmitter and receiving the test data pattern from the receiver in which the loopback control circuit directly provides the transmitted test data pattern from the transmitter to the receiver when an internal loopback configuration is enabled, and determining whether the voltage level of the common mode voltage results in a pass or fail.

This invention relates to network coding technology and discloses a network coding method based on maximum rank distance code. The method includes: performing network coding on transmitted data to obtain coded data; performing linear addition and multiplication on the coded data to obtain coded data packets; using a preset parity check matrix to perform error detection and location on the coded data packets to obtain an error matrix; and performing rank error correction on the coded data packets based on the error matrix to obtain the original source data. This invention also provides a network coding apparatus, device, and medium based on maximum rank distance code. This invention can reduce the amount of redundant data transmitted in the transmission network and maintain low latency and high data recovery success rate even in complex network environments.

The application discloses a semantic communication decoding method based on space-based computing, comprising the following steps: receiving a semantic encoding signal transmitted through a channel, and generating an initial decoding distribution through a non-autoregressive semantic decoder; constructing an empty information observation adapting to the current channel characteristics, inputting the observation into the decoder to estimate an implicit language prior, and correcting the initial decoding distribution to obtain a corrected channel likelihood distribution; combining the semantic prior of a pre-trained language model, quantifying the channel uncertainty and semantic uncertainty of each word position respectively, and generating a refinement priority based on the source ratio of the channel uncertainty in the total uncertainty; and iteratively refining the text sequence according to the priority. The application can explicitly eliminate the internal prior bias of a large model by using an empty observation, suppress the illusion phenomenon under a low signal-to-noise ratio, and realize the on-demand allocation of computing resources by distinguishing the uncertainty sources, thereby improving the accuracy and efficiency of decoding.

The invention relates to a method of real-world testing of a device under test with laboratory equipment. The method comprises the steps of: - Transmitting at least one data packet by means of a device under test at a certain reference time, wherein the reference time is derived from a global navigation satellite system signal, - Receiving the data packet by means of a test equipment, wherein the data packet received has been transmitted by the device under test at the reference time, - Processing the data packet received by means of the test equipment such that the test equipment synchronizes itself with the reference time, and - Transmitting at least one test data packet by means of the test equipment, wherein the test data packet is synchronized with the reference time.

The present application discloses a probabilistic shaping method, apparatus and device for a transmission signal, and a storage medium. The method comprises: acquiring a binary bit stream and a preset distribution symbol of a transmission signal; performing multi-layer bit probability operation processing on the binary bit stream on the basis of the preset distribution symbol to obtain a bit probability of the processed binary bit stream; obtaining a symbol probability by means of the bit probability; obtaining a modulation symbol on the basis of the processed binary bit stream; and completing probabilistic shaping of the transmission signal by means of the symbol probability and the modulation symbol.

Various example embodiments for supporting burst mode communications in an optical communication system may be configured to support burst mode communications based on use of a burst delineation scheme for burst detection. The burst delineation scheme may be based on detection of a delimiter in a burst mode transmission based on selecting, from a received bit stream, a first and second sets of bits, computing first and second error statistics on the first and second sets of bits, computing one or more error metrics based on one or more linear combinations of the first and second error statistics, and determining, based on one or more comparisons based on the one or more error metrics and one or more error thresholds, whether the received bit stream includes a delimiter. The burst delineation scheme for burst detection may be used for burst detection within various types of optical communication networks, including passive optical networks.

The application discloses a kind of soft demodulation methods for low signal-to-noise ratio 188-110A signal under large frequency offset, it is related to communication technical field, comprising: S1, preamble sequence detection and preamble sequence coarse synchronization based on autocorrelation;S2, prepare baseband preamble reference modulation signal;S3, preamble sequence fine synchronization based on differential cumulative correlation;S4, M&M and L&R joint frequency offset estimation and frequency offset correction based on preamble reference signal;S5, according to D1, D2 value table in 188-110A protocol, the demodulation of interleaving indicating D1, D2;S6, the frame search and frame demodulation of data are executed;S7, after the frame constellation of data is disturbed, the soft information of data frame is obtained;S8, based on 188-110A protocol, the deinterleaving of data frame soft information is completed by corresponding bit storage and reading mode, then it is decoded.After compared with prior art, signal detection anti-frequency offset is improved from ±0.4% to ±100%, signal detection performance is improved about 3dB gain, signal demodulation decoding performance is improved about 2.6dB gain.

In an exemplary embodiment, a method for detecting an interference event for a vehicle is provided, the method comprising: transmitting a plurality of zero packets via vehicle-internal communication from a first short-range wireless communication system of the vehicle to a second short-range wireless communication system of the vehicle; monitoring, via a processor of the vehicle, using sensor data from one or more sensors of the vehicle, which of the zero packets transmitted by the first short-range wireless communication system are actually received by the second short-range wireless communication system; determining, via the processor, a frequency at which the zero packets transmitted by the first short-range wireless communication system are actually received by the second short-range wireless communication system;and determine, via the processor, whether a traffic jam event has occurred for the vehicle, based on the frequency.

A test equipment (TE) may be configured to train a two-sided machine learning model for encoding and decoding channel state information (CSI) that is associated with a cellular network. TE may be configured to obtain training data associated with CSI and the cellular network, input the training data to one or more two-sided machine learning (ML) models, each comprising an encoder and a decoder, compress, by the encoder the channel state information (CSI) resulting in compressed CSI data, and decode, by the decoder the compressed CSI data, to obtain second CSI data.

The application provides a data transmission method based on UCIe, a storage medium and an artificial intelligence chip. The data transmission method comprises the following steps: receiving, by a receiving module of a second core, bypass-received data signals and bypass-received clock signals from a sending module of a first core; transmitting, by the receiving module, the bypass-received data signals and the bypass-received clock signals to a serial-parallel conversion module of the second core; counting, by a receiving clock counter of the serial-parallel conversion module, the bypass-received clock signals to obtain a bypass-received frame count value; generating, by the serial-parallel conversion module, a gray code count according to the bypass-received clock signals, and generating a gray code count synchronization signal and a gray code count delay signal in a bypass-constant-on clock domain; comparing, by the serial-parallel conversion module, the gray code count synchronization signal and the gray code count delay signal to determine whether to asynchronously reset the bypass-received frame count value; and sampling, by the serial-parallel conversion module, the bypass-received data signals according to the bypass-received frame count value.

The invention discloses a signal modulation analysis and data recovery method and system based on a zero-span mode, and provides a complete process which can complete FSK / ASK modulation signal identification and original binary data recovery only by using a general frequency spectrograph without special demodulation hardware. Low-cost and high-compatibility signal analysis is realized through a five-step method of frequency domain scanning, modulation identification, zero-span time domain observation, symbol synchronization and decision reduction, and frequency information is converted into a waveform of which the amplitude changes along with time by utilizing a zero-span mode of a frequency spectrograph, so that a common engineer can also intuitively observe and decode a digital modulation signal, and the accuracy of the digital modulation signal is improved. Symbol-level time synchronization and automatic judgment threshold setting are realized, and the accuracy and repeatability of data reduction are remarkably improved.

Systems, methods, and computer-readable media are provided for determining a packet's round trip time (RTT) in a network. A system can receive information of a packet sent by a component of the network and further determine an expected acknowledgement (ACK) sequence number associated with the packet based upon received information of the packet. The system can receive information of a subsequent packet received by the component and determine an ACK sequence number and a receiving time of the subsequent packet. In response to determining that the ACK sequence number of the subsequent TCP packet matches the expected ACK sequence number, the system can determine a round trip time (RTT) of the packet based upon the received information of the packet and the received information of the subsequent packet.

A communication method includes: sending a first sequence including P subsequences A to a first device, where the first sequence is used by the first device to count a first bit error rate (BER), and the subsequence A is constituted by one or more forward error correction (FEC) code blocks; and sending a second sequence including Q subsequences B to the first device, where the second sequence is used by the first device to count a second BER, the subsequence B is constituted by one or more FEC code blocks, a length of the second sequence is greater than or equal to a length of the first sequence, and P and Q are positive integers.

The present application relates to a kind of iteration shaping method and system of Ethernet pma layer, belong to electronic information, communication and power system automation field, iteration shaping method of Ethernet pma layer judges whether the duty cycle of overall sampling sequence is distorted, for the distorted sampling sequence needs further processing.Sampling sequence includes multiple sampling values, judge and iteration compensation are carried out to each sampling value, so as to achieve the shaping of distorted sampling sequence.Eigenvalue is used to judge whether the sampling value of sampling sequence needs iteration compensation.After the distorted sampling sequence is processed in turn, the defect of distortion may not be eliminated, so after processing, whether the sampling sequence after processing is distorted is judged again, and the defect of eliminating the distortion of sampling sequence is achieved by processing the sampling value multiple times, so as to realize the shaping of data distortion distortion, improve the accuracy of data.

Test system for determining at least one processing parameter of audio and / or video data in a mobile device (30) with a test device (10) with - an audio / video unit (11) that outputs audio and / or video data, - a mobile communication unit (12) connected to the audio / video unit (11) of the test device (10), wherein the mobile communication unit (12) is configured to transmit the audio and / or video data via a mobile communication interface (17) to the mobile communication device (30) under test, - a detection unit (13) which is connected via a cable to a decoder (36) in an audio / video unit (31) of the mobile communication device (30) under test and is designed to detect audio and / or video data, and - an analysis unit (14) which is connected to an analysis interface (15) between the audio / video unit (11) of the test device (10) and the mobile communication unit (12) and to the detection unit (13) and which is configured to detect the audio and / or video data at the analysis interface (15) and in the detection unit (13).

Various example embodiments for supporting burst mode communications in an optical communication system may be configured to support burst mode communications based on use of a burst delineation scheme for burst detection. The burst delineation scheme may be based on detection of a delimiter in a burst mode transmission based on selecting, from a received bit stream, a first and second sets of bits, computing first and second error statistics on the first and second sets of bits, computing one or more error metrics based on one or more linear combinations of the first and second error statistics, and determining, based on one or more comparisons based on the one or more error metrics and one or more error thresholds, whether the received bit stream includes a delimiter. The burst delineation scheme for burst detection may be used for burst detection within various types of optical communication networks, including passive optical networks.

This invention discloses a communication method, system, storage medium, and device based on a solar-blind ultraviolet detector. The method includes: constructing a fixed-duration frame structure containing a synchronization segment, a control segment, a data segment, and a protection segment, and formulating a unified communication protocol; the transmitting end converts the input digital signal into a binary bit stream and frames it, determines the number of bits carried by a single symbol based on the APPM modulation order and amplitude level, and transmits an ultraviolet light signal through bit grouping, symbol mapping, Gaussian pulse shaping, digital modulation, and electro-optic conversion; the receiving end converts the ultraviolet light signal into an electrical signal, extracts pulse feature parameters after filtering, adaptive shape Gaussian matched filtering, and timing synchronization, demodulates to obtain a bit stream, and performs frame parsing to extract valid user data; frame synchronization and bit synchronization are achieved throughout the process through a synchronization control module to ensure timing matching between the transmitting and receiving ends. This invention enhances the system's adaptability to channel time-varying characteristics and environmental interference, and improves communication confidentiality and reliability.

A method for link adaptation in a wireless communication network, the wireless communication network comprising at least one initiator and one or more responders, the method comprising: the initiator sending a training packet to the one or more responders, the training data packet comprises a non-null data field carrying a payload known to both the initiator and the one or more responders, the payload being generated according to a set of one or more predefined bit sequences, the training data packet is an announcement data packet sent by the initiator to the one or more responders before the training data packet, the announcement data packet announces the training data packet, and if the initiator is used to request a response of more than one responder, the announcement data packet announces the training data packet. The training data packet is followed by a dedicated trigger frame sent by the initiator to the more than one responder; the dedicated trigger frame indicates which responders in the more than one responder are requested to send the feedback report of the responder and how the more than one responder should send the feedback report of the responder; the initiator receives a feedback report from each of the one or more responders, where the respective feedback report includes a value of a measured link performance indicator relating to each transmitted predefined bit sequence detected by each respective responder.

This invention relates to the fields of medical informatics and data communication technology, specifically a CRRT online acquisition and intelligent monitoring system based on HL7. The system includes: a protocol cleaning and state mapping step: parsing the private protocol binary stream based on a virtual device state machine model to extract the device operating status and monitoring value vectors; a differential semantic analysis step: calculating the rate of change and deviation vector of the monitoring value vector relative to the historical time window; an adaptive message encoding step: selectively generating incremental maintenance messages or full semantic messages based on the comparison results of the rate of change and semantic fluctuation threshold; and a hybrid channel transmission step: dynamically allocating transmission channels and error correction coding strategies according to the message type to execute transmission. This invention solves the transmission contradiction between the real-time nature of high-frequency vital sign data and the redundancy of standardized protocols, balancing standard compatibility and real-time alarm capabilities under limited network conditions.

The invention discloses an adaptive Shearlet-compressed sensing distributed optical fiber sensing data transmission method and device, and relates to the technical field of optical fiber sensing data compression. The method comprises the following steps: carrying out information acquisition based on a distributed optical fiber sensing system to obtain an original signal matrix and a timestamp sequence; performing two-stage joint signal-noise separation according to the original signal matrix to obtain a de-noised signal matrix; according to the de-noised signal matrix and the timestamp sequence, carrying out data compression coding by using an adaptive Shearlet-compressed sensing algorithm to obtain a measurement vector and a time code frame; and performing joint data reconstruction by using a compressed sensing reconstruction algorithm according to the measurement vector and the time code frame to obtain a reduced signal matrix and a reduced timestamp sequence. The invention relates to a distributed data compression method suitable for a long-distance optical fiber monitoring scene based on sparse representation.

The application discloses a method and device for Internet of Things communication in a node for wireless communication. The node receives a first information block indicating a plurality of power control parameter values; transmits a first PRDCH, the first PRDCH adopts OOK; the transmission power value of the first PRDCH is equal to the smaller value compared between the maximum output power value and the first transmission power value, the maximum output power value depends on the power class of the transmitter of the first PRDCH; the first transmission power value is linearly related to the target power control parameter value, the target power control parameter value is equal to one of the plurality of power control parameter values, the target power control parameter value depends on the device type of the receiver of the first PRDCH, and the first PRDCH carries the information of the device type. The application optimizes power control and improves transmission quality.

The invention discloses an encryption compression transmission method and system for electric energy meter data, and relates to the technical field of data compression transmission, and the method comprises the steps: collecting the electric energy meter data in real time, periodically intercepting a time window, and obtaining a window sequence of multiple dimensions; converting each sampling point into a group of binary data, and dividing to obtain a bit plane sequence; obtaining the flipping probability of each bit plane sequence, and calculating the flipping random degree of each bit plane sequence; determining a noise interference layer based on the flipping random degree and performing bit mask processing to obtain purified data corresponding to each dimension window sequence; calculating the trend confusion degree of each dimension window sequence based on the purification data; and calculating a transmission control coefficient corresponding to each dimension window sequence based on the trend chaos degree so as to execute a corresponding compression strategy and carry out encrypted transmission. The compression transmission efficiency of the electric energy meter data can be improved, and the defect that the compression effect of a traditional LZW compression algorithm is reduced in a complex power grid environment is overcome.