164results about "Cross-talk reduction" patented technology

The invention discloses a method for improving transformer area crosstalk of HPLC (High Performance Liquid Chromatography) and micropower wireless dual-mode communication, which comprises the following steps of: S1, electrifying an acquisition terminal equipment node, and aligning signal acquisition time windows of two communication modes; s2, combining the obtained dual-mode signal parameters with a preset transformer area topology database to generate feature vectors of multi-dimensional features; s3, training to generate a random forest model, inputting feature vectors of multi-dimensional features, dynamically calculating the affiliation weight value of the transformer area, and carrying out nonlinear weighted calculation on the feature vectors; and S4, on the basis of weight comparison and transformer area boundary node processing, correcting measurement errors by combining the transformer area attribution weight value with a preset impedance shielding compensation algorithm, generating a unique transformer area identifier, locking a networking relationship, and executing transformer area attribution judgment. According to the method, the wide coverage advantage of HPLC is reserved, meanwhile, the space attenuation characteristic of wireless communication is used for achieving accurate recognition of the transformer area boundary, and the installation and acquisition stability of the use and acquisition terminal equipment can be improved.

Disclosed is a wired cooperative multiple input multiple output (CMIMO) signal transmission method based on a multimode transmission line. The method includes the following step: selecting a type of the multimode transmission line; constructing a wired CMIMO transmission system based on the multimode transmission line; performing channel measurement to obtain a transmission coefficient matrix; judging whether the transmission coefficient matrix satisfies a full rank and reversibility and has a condition number satisfying conditions; optimizing a structure of the multimode transmission line, a multiport excitation structure, and a multiport receiving structure to obtain the transmission coefficient matrix which satisfies a full rank and reversibility and has a condition number satisfying conditions; making the transmission coefficient matrix be equivalent to a channel matrix of the wired CMIMO transmission system; and completing signal excitation, transmission and reception of the wired CMIMO transmission system based on the multimode transmission line.

Disclosed are a noise suppression method and apparatus for power line carrier communication, and a storage medium. The method comprises: acquiring a frequency domain signal of power line carrier communication, and performing interference detection on subcarriers within a target frequency band in the frequency domain signal to obtain a target effective subcarrier, the target frequency band being determined on the basis of the frequency domain signal; on the basis of on the target effective subcarrier, performing noise reduction processing on channel estimation results at the subcarriers within the target frequency band; and, on the basis of the channel estimation results before and after the noise reduction at the subcarriers within the target frequency band, performing compensation on communication data after channel estimation in the power line carrier communication, so as to suppress noise in the power line carrier communication. According to the method, noise within the target frequency band of the frequency domain signal in the power line carrier communication is effectively detected and suppressed, so that the noise suppression effect of power line carrier communication is improved, thereby improving the quality of the power line carrier communication.

A system may include a signal replica transmitter configured to generate a replica signal based on a first signal, and an echo canceller configured to remove crosstalk from a second signal. The echo canceller may include a first current mode logic (CML) circuit configured to receive a first set of input signals, and a second CML circuit configured to receive a second set of input signals, wherein a first output from the first CML circuit and a second output from the second CML circuit may be combined to remove the crosstalk from the second signal and generate an output signal from the echo canceller.

The embodiment of the invention discloses an interconnection communication method and device based on a power terminal cross-operating system. The method comprises the following steps: acquiring an original data set of a cross-operating system channel of the power terminal in each modulation mode; training a preset quantitative relation model based on the original data set and a support vector machine regression algorithm, and determining a to-be-selected quantitative relation model; performing performance evaluation on the to-be-selected quantitative relation model based on the original data set, and determining a target quantitative relation model; determining the current crosstalk intensity corresponding to the current channel interval parameter based on the current channel interval parameter in the current communication environment and the target quantitative relation model in the cross-operating system interconnection communication process of the power terminal; according to the method, the current channel interval parameter is dynamically adjusted based on the current crosstalk intensity and the preset crosstalk intensity threshold value, so that the dynamic adjustment of the channel interval parameter is accurately and conveniently realized, the crosstalk between channels is avoided, and the communication quality of cross-operating system interconnection communication of the power terminal is improved.

Disclosed is an inter-channel interference attenuation circuit system, which includes a plurality of channels provided between a memory and a processor and that transmits data received from the memory to the processor, and an interference attenuation circuit module connected one by one to each of the channels, and each of the channels is, a victim channel with respect to the connected interference attenuation circuit module, and an aggressive channel with respect to an adjacent interference attenuation circuit module, which is an interference attenuation circuit module connected to an adjacent channel which is interfered with by its own data transmission, and each of the interference attenuation circuit modules, adjusts an output signal of the connected victim channel based on the interference attenuation circuit module and the number of adjacent channels.

Examples described herein relate to an Ethernet physical layer transceiver (PHY) circuitry to generate a training signal for transmission for a lane based on a pseudorandom bit sequence (PRBS) polynomial and seed.

Methods, systems, and devices for crosstalk cancellation for signal lines are described. In some examples, a device (e.g., a host device or a memory device) may generate a first signal and may invert the first signal to obtain an inverted first signal. The device may obtain a second signal based on attenuating a first range of frequencies of the inverted first signal and a second range of frequencies of the inverted first signal, where the first range of frequencies is below a first threshold frequency and the second range of frequencies is above a second threshold frequency that is greater than the first threshold frequency. The device may transmit the first signal via a first signal line of a set of signal lines and the second signal line via a second signal line of the set of signal lines.

Aspects of the embodiments disclosed herein include electrical systems that reduce crosstalk, such as far-end crosstalk (FEXT) between two or more signal paths of a memory system by electromagnetically coupling the two or more signal paths each comprising a respective trace. Electromagnetically coupling the two or more respective traces includes positioning at least two traces in close proximity with each other such that a mutual-to-self-inductance ratio (Lm / L) between the at least two signal paths matches or substantially matches the mutual-to-self-capacitance ratio (Cm / C) of the at least two signal paths. Certain embodiments of this disclosure are directed to a passive manner of reducing FEXT between any number of signal paths without adding traces with the sole purpose of reducing crosstalk, thereby reducing or maintaining a signal density between designs of a component of an IC package.

Provided is an apparatus for controlling a communication signal of a photovoltaic power generation system. The apparatus includes a memory storing at least one program therein, and at least one processor configured to execute the at least one program, wherein the at least one processor is further configured to acquire data on a communication status by monitoring a plurality of devices included in the photovoltaic power generation system, derive information related to communication of each of the devices based on the acquired data, and control a communication signal of at least one of the devices based on one of the acquired data or the information related to the communication.

Example embodiments describe means (200) for performing i) pre-compensating (210, N sets of K1 tone data values (220) for crosstalk between N communication lines; the N sets of K1 tone data values pertaining to respective N terminal nodes of a digital communication system; ii) calculating (215) from the pre-compensated N sets of K1 tone data values (221) N sets of first time domain symbols (225); iii) calculating (283) a second time domain symbol (284) from a set of K2 tones values (280); the K2 tone data values pertaining to a selected one of the N terminal nodes; and iv) adding (212) the second time domain symbol in a weighted manner to the first time domain symbols such that the second time domain symbol is added to the first time domain symbol for the selected terminal node and to at least one other of the first time domain symbols for the respective other terminal nodes.

A method and computer readable medium for communication on a shared media. In one embodiment, the method comprises holding a token by a first coordinator on a virtual ring, only a token-holding coordinator is permitted to transmit data associated with a first service level; transmitting data associated with the first service level, by the first coordinator, to device(s) on a first local domain; passing, by the first coordinator, the token to a second coordinator; periodically transmitting data associated with the first service level, by the second coordinator, to device(s) on a second local domain; receiving, by a third coordinator while the second coordinator holds the token, a message to transmit data associated with a second service level to device(s) of a third local domain; and transmitting, by the third coordinator while the second coordinator is not transmitting, the data associated with the second service level.

This communication system using a heating line may perform communication by dividing a time section into a heating section and a communication section in communication between a control panel and a sensor unit connected by the heating line. The present invention enables communication to be performed by dividing a time section into a heating section and a communication section in communication between a control panel and a sensor unit, thereby preventing a problem that a communication signal is blocked or distorted in power communication in which a heating line is connected. The present invention enables communication to be performed by dividing a time section into a heating section and a communication section, thereby solving problems of excessive heating caused by continuous supply of power to the heating line and high temperature maintenance costs.

A differential data transmission system (200; 700), comprising: a source (201) configured to transmit a differential signal containing data; a load (204) configured to receive the differential signal; and a common-mode suppressor (300; 400; 500; 702) comprising a long, wound differential transmission line configured to carry the differential signal from the source to the load; wherein a length of the differential transmission line is at least greater than one tenth of the wavelength of the differential signal, which is transmitted through the differential transmission lines in a predetermined operating frequency range of the differential signal, further comprising a protection circuit (202; 701) against electrostatic discharges, which is connected to the first (303; 703) and second (304; 704) input pins of the common-mode suppressor (300; 400; 500; 702) and which is configured to provide protection against shocks from electrostatic discharge.

A communication system for use in a vehicle includes a first communication device configured for operation in the vehicle, and a second communication device configured for operation in the vehicle. A cable assembly communicatively couples the first communication device with the second communication device. A signal suppressing device is coupled to the cable assembly at a location proximate to an end of the cable assembly. The signal suppressing device is configured to suppress signals in a frequency range corresponding to in-band radiated emission (RE).

The transmitter transmits a first signal at a first communication rate over a first cable. The receiver receives a second signal over the first cable simultaneously with transmitting the first signal over the first cable. The second signal is transmitted by another device at a second communication rate that is lower than both (i) the first communication rate and (ii) a third communication rate at which a third signal is being transmitted over the second cable that causes crosstalk in the second signal received over the first cable. Receiving the second signal at a second communication rate that is lower than the third communication rate facilitates mitigating crosstalk in the second signal caused by transmission of the third signal at the third communication rate over the second cable.

The embodiments herein are directed to technologies for crosstalk cancellation structures. One semiconductor package includes conductive metal layers separated by insulating layers, the conductive metal layers for routing signals between external package terminals and pads on an integrated circuit device. Signal lines formed in the conductive metal layers have electrode structure (capacitor electrode-like structures) formed for at least adjacent signaling lines of the package terminals. Two of the electrode structures from the adjacent signaling lines are formed opposite each other on different metal layers.

The invention discloses a detection circuit and a detection method. When the detection circuit provided by the specification is adopted to execute the detection method, the cut-off frequency of the signal of the transmitting line induced by the receiving line can be determined in a manner of enabling the structure between the controlled equipment and the control equipment to be equivalent to a high-pass filter of the high-frequency interference noise of the corresponding circuit, and then the communication frequency is set according to the cut-off frequency; and the effect of eliminating interference signals is achieved. By adopting the method, the influence of interference signals on normal transmission signals can be effectively reduced, faults such as equipment failure and out-of-control caused by the interference signals are solved, the implementation process is simple and convenient, the method can be continuously effective only by performing measurement once before formal application, and the cost is relatively low.

The invention provides a synchronous data crosstalk effect optimization method and system and electronic equipment. The method comprises the following steps: respectively measuring a jump edge jitter range of a victim channel and a jump edge jitter range of an applicator channel; any channel is selected from the victim channel and the applicator channel, and a first delay module is additionally arranged at the sending end of the selected channel; a second delay module is additionally arranged at the tail of the other unselected channel; configuring the first time delay module and the second time delay module based on the jump edge jitter range of the victim channel and the jump edge jitter range of the applier channel; and performing crosstalk effect optimization on the synchronous data of the two channels based on the configured first delay module and second delay module. The method can solve the problems that an existing synchronous data crosstalk effect optimization scheme is high in responsible degree and poor in optimization effect.

A transmitter transmits a first signal via a first cable at a first baud rate. A receiver receives a second signal via the first cable concurrently with transmitting the first signal via the first cable. The second signal is transmitted by another device at a second baud rate that is lower than both i) the first baud rate and ii) a third baud rate at which a third signal is being transmitted in a second cable that causes crosstalk in the second signal being received via the first cable. Reception of the second signal at the second baud rate that is lower than the third baud rate facilitates mitigation of the crosstalk in the second signal caused by transmission of the third signal in the second cable at the third baud rate.

Embodiments of the present invention provide systems, devices and methods for identifying and selecting a preferred frequency spectrum for communication using a wireline media. In certain embodiments, a process of sensing traffic on the wireline media from other service is described and subsequent selection of a preferred frequency range in which interference from these other services is reduced.

During the development of Low Power Mode (LPM) (also known as L2 Mode) for DSL (Digital Subscriber Line) systems, it has become apparent that one of the most important issues is the impact on deployed legacy DSL systems. Legacy DSL systems are not capable of operating in the presence of large changes in crosstalk noise from neighbouring lines entering and exiting LPMs. For example, prior LPM methods at least do not assure that legacy lines will be protected to guarantee that no retrains will occur. These and other issues are addressed herein.

This application discloses a co-cable probability detection method and an apparatus, to accurately and efficiently detect a cable segment shared by different transmission media. The method includes: obtaining information about at least two first events generated by a first sounding signal transmitted in a first transmission medium and information about at least two second events generated by a second sounding signal transmitted in a second transmission medium, where the information about the at least two first events indicates at least one cable segment on the first transmission medium, and the information about the at least two second events indicates at least one cable segment on the second transmission medium; and obtaining, based on the information about the at least two first events and the information about the at least two second events, a probability that the at least one cable segment on the first transmission medium and the at least one cable segment on the second transmission medium include a co-cable segment.

The invention relates to the technical field of rail transit, in particular to a broadband power line carrier communication method and system, a medium and equipment applied to a rail circuit outdoor monitoring system, and the method comprises the steps that a power line carrier processing module issues a broadcast frame through the frequency of a preset frequency band of a channel where the power line carrier processing module is located; the acquisition extension sets receive the broadcast frames in a polling manner according to preset frequency bands of channels where the acquisition extension sets are located, response frames are uploaded if receiving succeeds, and otherwise, the acquisition extension sets are not networked; judging whether all acquisition extensions in each channel bus are networked or not; if the extension sets are not networked in the channel bus, recording the number of the networked extension sets, replacing the frequency band and re-issuing the broadcast frame; if all the extensions in the channel bus are networked, locking the frequency band, issuing a configuration frame, and receiving a configuration return frame of each extension; if the configuration return frame is successfully received, the extension networking configuration is successful; after networking configuration succeeds, the acquisition extensions and the communication host can carry out power line carrier communication. According to the invention, the signal transmission anti-interference capability and the data transmission security can be enhanced.

A communication circuit for reducing recoil noise of an eye open monitor comprises a first sampler, a second sampler and a pre-amplifier, the first output end and the second output end of the pre-amplifier are connected with the first input end and the second input end of the first sampler respectively, and the first input end and the second input end of the second sampler are connected with the first output end and the second output end of the pre-amplifier respectively. An input signal is applied to the preamplifier and a first input of the second sampler, respectively, and when an edge of the sub-clock precedes an edge of the master clock, the first sampler samples a data value by comparing the input signal with a second reference voltage at the edge of the sub-clock, the second sampler samples a data value by comparing the input signal with a first reference voltage at an edge of the master clock, and when an edge of the sub-clock lags the edge of the master clock, the second sampler samples a data value by comparing the input signal with a second reference voltage at an edge of the sub-clock, a first sampler samples a data value by comparing an input signal to a first reference voltage at an edge of a master clock.

To provide baseband modules that mitigate crosstalk in dispersive waveguides.SOLUTION: In a system, a transmit baseband module 100 having a communication path for a first data signal received at a signal input 115a and a second data signal received at a signal input 115b has finite impulse response (FIR) filters 120a, 120b in a communication path between the first signal input and a second signal output. The system further has a radio frequency channel 110 and a receive baseband module 105.SELECTED DRAWING: Figure 1

A communication system includes a first physical-layer (PHY) transceiver and a second PHY transceiver. The first PHY transceiver includes (i) a first transmitter and (ii) a first receiver including a first equalizer. The second PHY transceiver includes (i) a second transmitter and (ii) a second receiver including a second equalizer. The first PHY transceiver and the second PHY transceiver are configured to communicate with one another over a full-duplex link, including training the first equalizer on a second training signal transmitted from the second PHY transceiver, and concurrently training the second equalizer on a first training signal transmitted from the first PHY transceiver.

The application discloses an image transmission and control method and device based on dynamic EQ compensation and anti-nuclear radiation, and belongs to the field of data transmission. The application calculates a first loss coefficient for quantifying the influence of environmental nuclear radiation on the transmission performance of unshielded twisted pair, calculates a second loss coefficient for quantifying the comprehensive influence of all environmental factors and signal frequency on the transmission performance of unshielded twisted pair, and fuses the two coefficients. Then, based on the signal frequency of the target video signal and the fused loss coefficient, the cable attenuation coefficient of the unshielded twisted pair is calculated according to a preset composite attenuation model, the amplitude attenuation factor of the unshielded twisted pair is calculated according to a preset cable transmission function, and the target video signal transmitted through the unshielded twisted pair is compensated. The technical effects of dynamically adapting to a complex nuclear radiation environment, dynamically and accurately compensating signal attenuation, and significantly improving the transmission quality and stability of the unshielded twisted pair video signal are realized.

The invention relates to a method for crosstalk compensation of output signals (SL1 (t), SL2 (t)) of at least one small signal converter for measuring electrical quantities on at least two conductors (L1, L2), at least one of which causes crosstalk,-wherein when a sinusoidal electrical quantity is fed into one of the conductors (L1, L2), the output signals (SL1 (t), SL2 (t)) of the small signal converter are compensated for the crosstalk of the output signals (SL1 (t), SL2 (t)). A crosstalk amplitude and a crosstalk phase angle of the small signal converter on the other conductor (L1, L2) are determined,-wherein for each small signal converter the crosstalk (CrCap) at a phase angle of 90 DEG (or-90 DEG) is determined from the product of the measured crosstalk amplitude and the sine of the measured crosstalk phase angle,-wherein for each small signal converter the crosstalk (CrCap) at a phase angle of 90 DEG (or-90 DEG) is determined from the product of the measured crosstalk amplitude and the sine of the measured crosstalk phase angle,-wherein the crosstalk (CrCap) at a phase angle of 90 DEG (or-90 DEG) is determined from the product of the measured crosstalk amplitude and the sine of the measured crosstalk phase angle. The crosstalk (Cind) at a phase angle of 0 DEG (or 180 DEG) is determined from the product of the measured crosstalk amplitude and the cosine of the measured crosstalk phase angle,-wherein, in order to form the compensated output signal (SL1 comp (t), SL2 comp (t)) of each small signal converter considered, the crosstalk (Cind) is determined at a phase angle of 0 DEG (or 180 DEG). From the uncompensated output signal (SL1 (t), SL2 (t)) of the small signal converter, the product of the electrical quantity on the respective other conductor (L1, L2) and the crosstalk (Cind) at a phase angle of 0 or 180 DEG and the product of the electrical quantity on the respective other conductor (L1, L2) phase shifted by 90 DEG and the crosstalk (CrCap) at a phase angle of + 90 DEG or-90 DEG are subtracted.

An active single-ended transmission cable is disclosed. The active single-ended transmission cable allows connection between a first and a second electronic device and comprises a first port, a second port, and a transmission wire. The first or second port is used for receiving or transmitting a differential signal between the first and the second electronic devices, and for converting between a differential signal and a single-ended signal. The transmission wire is used for transmitting the single-ended signal. This allows the conversion between the received or transmitted differential signal at the first and second ports into the single-ended signal so as to allow the transmission of the single-ended signal within the transmission wire.