143 results about "Communications receiver" patented technology

An integrated photonics millimeter wave (MMW) radar communication system based on analog phase modulation scheme includes an integrated photonics MMW radar communication signal transmitter, a radar receiver, and a communication receiver. The transmitter includes a radar communication signal analog phase modulation module, an optical frequency comb (OFC) module, an electro-optic modulator (EOM), an optical shaping filter, an optical power divider, a photoelectric detector, an electric power amplifier, and a transmitting antenna that are cascaded sequentially. The radar receiver includes a radar receiving antenna, an electric low-noise amplifier (LNA), an optical phase modulator, an optical bandpass filter (BPF), a low-speed photoelectric detector, an electric low-pass filter, and a low-speed oscilloscope that are cascaded sequentially. In the communication receiver, a communication receiving antenna is sequentially cascaded with an electric LNA, a frequency mixer, and an oscilloscope, and a voltage-controlled oscillator is cascaded with a frequency multiplier and then connected to the frequency mixer.

A method and apparatus for cross-computing power cluster communication, an electronic device, and a computer readable storage medium, are provided. An implementation of the method includes: in response to a communication initiator and a communication receiver respectively belonging to different computing power clusters, increasing a RDMA connection count on the basis of an initial connection count until a detected actual bandwidth value no longer increases, to obtain a target connection count; increasing, with the RDMA connection count being maintained at the target connection count, a Buffer size on the basis of an initial size until a detected actual bandwidth value no longer increases, to obtain a target size; determining cross-cluster transmission parameters, based on the target connection count and the target size; and communicating, cross-cluster transmission parameters, with the communication receiver belonging to a different computing power cluster.

The invention provides a full-space intelligent metasurface-assisted vehicle tracking method and system. The system comprises a roadside unit RSU, a vehicle top IOS and an in-vehicle communication receiver CR. The RSU comprises an MIMO (Multiple Input Multiple Output) multi-antenna system; the IOS assists the RSU to communicate with the CR in the vehicle and track the vehicle, and high-precision vehicle tracking is realized by designing a customized extended Kalman filter (EKF) method and utilizing position side information provided by the IOS. According to the method, the IOS is utilized to assist the MIMO multi-antenna ISAC system, and the transmitting beam forming and IOS configuration of the RSU are jointly optimized, so that the sensing performance is remarkably improved, the CR communication rate is ensured, and particularly, excellent performance is shown under the conditions of high power and a large number of IOS units.

The waveguide carrying a nonlinear crystal with reflective interface, a pump photon source and a circulator define an optical parametric amplifier which uses optical power from the pump photons to boost incoming signal and idler photons which carry the encoded signal. The nonlinear crystal performs optical parametric amplification upon the incoming optical signal in a quantum photonic process that generates additional signal and idler photons to thereby boost the intensity of the incoming signal. A photodetector is coupled for communication with the third port and operative to convert the reflected optical signal into an electrical signal defining the output of the communications receiver.

The invention relates to a Rydberg atomic communication receiving system and method based on AT split peak value analysis, and belongs to the technical field of quantum communication. The system comprises a detection laser, a coupling laser, an AOM / EOM, a function generator, a high-frequency signal generator, a cesium atom gas chamber, a photoelectric detector, a lock-in amplifier, a data acquisition module and a microwave signal output module. The AOM / EOM modulates the frequency of the detection laser; the microwave signal output module generates an AM modulation microwave signal and transmits the AM modulation microwave signal to the cesium atom gas chamber, so that the target Rydberg state atoms generate an AT splitting effect to calibrate system parameters; the photoelectric detector and the lock-in amplifier obtain a first harmonic component based on the transmission light. During communication, the system is arranged in a microwave electric field received by communication, and the data acquisition and processing module outputs AM modulation microwave signals received by the recovered cesium atom gas chamber based on calibrated system parameters and phase locking. The method solves the problem of signal distortion existing in EIT-AT direct communication transmission and the problem of tedious operation of a heterodyne method.

An optical wireless communications (OWC) receiver is configured for receiving light encoded with one or more data signals from one or more light sources of one or more OWC transmitters and for generating one or more electrical signals which are representative of the received light. The OWC receiver comprises a photodetector configured to generate the one or more electrical signals, a freeform optical component comprising a plurality of lenslets, each lenslet comprising a corresponding lenslet optical surface, wherein at least one of the lenslet optical surfaces is translationally and cylindrically asymmetric, wherein the freeform optical component comprises a three-dimensional freeform optical surface which includes the lenslet optical surfaces, and wherein the freeform optical component and the photodetector are configured so that the freeform optical component directs at least a portion of the light that is incident on the freeform optical component from the light source onto the photodetector. An OWC transmitter and an OWC system are also disclosed.

The invention provides a communication method and a communication device supporting a variable authentication label length, and the method comprises the steps: generating a first key stream and a second key stream according to input data through employing a ZUC algorithm, and carrying out the encryption processing of the input data through employing the first key stream, and obtaining a ciphertext message; a secret key mixing step: performing shift operation on the current secret key and the next secret key in the second secret key stream to obtain secret key mixed data; a first updating step: updating the next secret key as the current secret key, and sequentially repeating the secret key mixing step and the first updating step for at least one time until all secret key mixed data is obtained; calculating a target message authentication code according to the second key stream and all key mixed data; and sending the ciphertext message and the target message authentication code to a communication receiver. The problem that in the prior art, the bit number of integrity verification is too single, and integrity verification of different lengths cannot be adopted for messages of different importance degrees, so that the risk that a secret key is attacked and cracked is increased is solved.

An optical communication receiver system for a mobile platform includes: a surface having an entrance aperture for entry of an optical communication signal from a remote source; an optical receiver to receive the optical communication signal through the entrance aperture; a reflective layer over at least a portion of the surface to at least partially reflect an alignment beam that is substantially coincident with the optical communication signal; a camera positioned to detect the reflected alignment beam; a processor to determine alignment information about the alignment beam relative to the entrance aperture based on the reflected alignment beam detected by the camera; and a transmitter to transmit the alignment information to the remote source to enable the remote source to center the optical communication signal in the entrance aperture.

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for radio frequency band segmentation, signal detection and labelling using machine learning. In some implementations, a sample of electromagnetic energy processed by one or more radio frequency (RF) communication receivers is received from the one or more receivers. The sample of electromagnetic energy is examined to detect one or more RF signals present in the sample. In response to detecting one or more RF signals present in the sample, the one or more RF signals are extracted from the sample, and time and frequency bounds are estimated for each of the one or more RF signals. For each of the one or more RF signals, at least one of a type of a signal present, or a likelihood of signal being present, in the sample is classified.

The invention discloses a real-time damage detection device for a communication receiver under strong electromagnetic pulse impact, and belongs to the field of electromagnetic compatibility. According to the device, different signal injection modes are adopted, the injection power and the injection duration of signals are adjusted, an injection experiment of high-power electromagnetic pulses is carried out, and the damage condition of the communication receiver under strong electromagnetic pulse attack in a complex electromagnetic environment is simulated through the working state of the most sensitive first-stage low noise amplifier of the receiver, so that the reliability of the communication receiver is improved. And real-time damage detection is carried out, and exploration about damage conditions is carried out, so that timely maintenance and further protection of the communication receiver in a complex environment are facilitated. The device can simulate the impact effect of strong electromagnetic pulses on the communication receiver, comprehensively monitor the working state of the communication receiver in real time and record the damage condition, provide core support for rapid positioning and isolation of fault equipment, and remarkably shorten the communication link repair time.

The invention discloses a wireless communication receiver data enhancement method based on a diffusion model, and belongs to the technical field of wireless communication. The method comprises the following steps: S1, collecting channel measurement data and corresponding user positions and speeds; s2, training a diffusion model by using channel measurement data under the conditions of user position and speed; s3, generating synthetic channel data by using a diffusion model according to the user position and speed of the scene to be enhanced; s4, combining the channel measurement data with the synthesized channel data to obtain an enhanced channel data set; and S5, generating a receiver training data set based on the enhanced channel data set, and training a receiver neural network model. According to the invention, the scene-adaptive synthetic channel data is generated based on the diffusion model, the demand for channel measurement data is reduced, the adaptive capability of a receiver model to different scenes is improved, and the problems of high data acquisition cost and poor scene adaptability in the prior art are solved.

This invention provides a communication countermeasure simulation method based on random simulation, belonging to the field of electronic countermeasure simulation technology. The method first establishes a probability distribution model of reconnaissance information deviation for key parameters of the communication target; then, based on the probability distribution model of each parameter deviation, independent random sampling is performed to generate instantaneous values ​​of frequency deviation, positioning deviation, and modulation pattern recognition results at each moment, and the guidance parameters of the jammer are determined; next, the instantaneous interference-to-signal ratio (ISR) at the target receiver at the current moment is calculated; finally, the ISR calculated at the communication receiver is compared with a preset communication performance degradation ISR threshold to determine whether the jamming is successful. The model of this invention has clear physical meaning and can accurately quantify the impact of reconnaissance information deviation and propagation loss on the jamming effect, significantly improving the credibility and practicality of the simulation evaluation.

serial communications bus.20 25 28 73 31 24 D ec 2 02 5 A B S T R A C T 2 0 2 5 2 8 7 3 3 1 2 4 D e c 2 0 2 5 s e r i a l c o m m u n i c a t i o n s b u s . 400 Serial communications bus interface 220A 408A Upstream Serial communications receiver bus 412A 404A 410 402 Upstream transmitter Upstream control 414A Clock Upstream enable Lock-out Serial communications Downstream control control circuit bus interface 220B Electronic 404B 414B processor Downstream Downstream enable 408B transmitter 406B 3 / 5 Downstream Serial communications receiver bus 412B FIG. 4 20 25 28 73 31 24 D ec 2 02 5 2 0 2 5 2 8 7 3 3 1 2 4 D e c 2 0 2 5 b u s i n t e r f a c e 4 0 6 A 2 0 2 t r a n s m i t t e r U p s t r e a m c o n t r o l U p s t r e a m e n a b l e Downstream control c o n t r o l c i r c u i t b u s i n t e r f a c e E l e c t r o n i c p r o c e s s o r D o w n s t r e a m D o w n s t r e a m e n a b l e t r a n s m i t t e r D o w n s t r e a m

The present disclosure is directed to a light-signal communication receiver device including a photo-receiving diode configured to generate a current signal on a first node from a received light signal, a preamplifier configured to convert the current signal on the first node into a voltage signal on a second node, and a differential amplifier including a first input connected to the first node and a second input connected to a third node coupled to the second node via an adjustment circuit. The adjustment circuit is configured to offset the level of the voltage signal of the second node, on the third node, in a controlled manner by a control signal.

This invention belongs to the field of space laser communication and deep space exploration technology, and discloses an integrated detection device for space laser communication monitoring and interaction. The device includes a main body, on which are integrated a solar panel, a navigation imaging device, a communication antenna, a communication receiver, a radar, a landing support, and functional components for communication monitoring, environmental perception, and interactive operation. This invention forms a closed-loop system through electrical, signal, and mechanical connections, enabling simultaneous execution of multiple tasks, significantly improving the device's space operation efficiency, reducing the load pressure on space launch vehicles, and adapting to the space constraints of on-orbit operations. The communication antenna and receiver achieve bidirectional signal interaction through a high-speed laser communication module and are linked with the navigation imaging device and environmental sensors to ensure stable transmission and status monitoring of laser communication signals, which is beneficial for practical applications and operations.

A fall monitor has a first wireless communications receiver and a second wireless communications receiver. The second receiver receives wireless communications according to a different communications protocol than the first receiver. A fall detection pad includes a wireless communications module having a first pad transmitter configured to communicate with the first receiver to transmit a pairing communication when the fall detection pad is placed in proximity to the first receiver and a second pad transmitter configured to communicate with the second receiver when the fall detection pad is paired with the fall monitor display unit to transmit the fall alarm communication when the fall detection pad determines that a patient has removed pressure from the fall detection pad. A clinician key may be provided that is configured to communicate with the first receiver to provide a hold status for the alarm signal of the display unit.

A context communication system includes an external device including a communication receiver and an electronic control unit (ECU). The ECU includes data processing hardware and memory hardware that stores actions and action settings. The data processing hardware includes a contextual communication feature having a telematics system configured to detect the external device and a contextual event. The contextual communication feature is configured to selectively issue a contextual alert based on the detected external device and in response to a contextual event.

The invention discloses a sampling method and device for source synchronous communication, terminal equipment and a storage medium. The sampling method comprises the following steps: acquiring a Slave path initial delay value and a Master path initial delay value of a communication receiver; according to the initial delay value of the Slave path and the initial delay value of the Master path, window sweeping and ping-pong switching operation are repeatedly executed, when the time for executing the window sweeping and ping-pong switching operation is larger than a time threshold value, adjustment of a communication receiver is completed, and sampling of source synchronous communication is carried out based on the adjusted communication receiver. According to the invention, based on the burr-free data duration of the Slave path and the burr-free data duration of the Master path, the Slave path and the Master path are controlled to carry out switching output, thereby ensuring that the communication equipment can transmit stable burr-free transmission data, and improving the stability of data transmission when source synchronous communication is at an optimal sampling position.

To provide a communication receiver that can perform service-oriented communication in the whole of between servers and clients.SOLUTION: A communication transceiver 12 according to one aspect of the present disclosure is connected to a main control unit 11A of a communication device 10A. The communication transceiver includes a service control unit 121 and a service interface unit 122. The service control unit transmits a service presentation message to an electronic control device according to a first protocol of service-oriented communication based on first setting information set in response to an instruction from the main control unit. When service-oriented communication is established, the service interface unit converts communication data according to a second protocol received from the main control unit into communication data according to the first protocol based on second setting information set in response to the instruction from the main control unit, and transmits the converted communication data to the electronic control device.SELECTED DRAWING: Figure 2

The present disclosure provides a method, apparatus, and device for compensating for carrier phase and IQ imbalance of a communication receiver, which can be applied to the field of communication signal processing technology. The method includes: sampling a received signal of a communication receiver to obtain a received signal sequence, wherein the communication receiver includes a transmitter and a receiver, and the receiver processes the transmitted signal from the transmitter to obtain a received signal; calculating the expectation and covariance matrices of the received signal sequence, and constructing a likelihood function corresponding to the received signal sequence based on the expectation and covariance matrices; derivatizing the logarithmic function of the likelihood function to obtain a set of estimation equations corresponding to multiple parameters to be estimated; iteratively solving the set of estimation equations according to a predetermined number of iterations to obtain multiple target estimation parameters corresponding to the multiple parameters to be estimated; and compensating the received signal sequence based on the target estimation parameters to obtain a target signal sequence.

This invention discloses a short-window gamma-gamma turbulence parameter prediction method for space-to-ground laser communication, belonging to the technical field of space-to-ground laser communication and atmospheric turbulence channel parameter prediction. This method addresses the problems of traditional methods, such as strong dependence on long observation windows, significant degradation in prediction accuracy under short-window scenarios, and insufficient robustness under low signal-to-noise ratio conditions. It establishes a short-window observation model for the space-to-ground optical link and a gamma-gamma channel statistical model, constructs time-dependent short-window training data, and designs a short-window gamma-gamma network. Temporal features are extracted through a convolutional backbone, and a scintillation exponential physical regularization auxiliary head is used to achieve joint parameter prediction under physical constraints, outputting predicted gamma-gamma distributed parameters. This method can achieve high accuracy and good stability in parameter prediction under short observation windows and low signal-to-noise ratio conditions, and can be used for turbulence channel state characterization at the space-to-ground laser communication receiver.

An image display device is disclosed in which electrical connection to a rotary body is reliably maintained during rotation of the rotary body and supply of power and transmission and reception of a signal are stabilized. Since transmission and reception of a signal between a communication transmitter and a communication receiver are implemented through a cavity formed in a motor, introduction of an external signal is blocked, and thus security and control stability are ensured. Even when a rotary module rotates at a high speed, damage thereto due to friction is prevented, and thus the durability thereof is ensured. Rotation of the rotary module is stabilized through structural stabilization.

The application discloses a wireless communication receiver and a wireless communication receiving method. The receiver comprises a signal receiving circuit and a data processing circuit. The signal receiving circuit is used for receiving a wireless data packet transmitted by a remote device, wherein the wireless data packet comprises a preamble signal and a data signal. The signal receiving circuit comprises a transimpedance amplifier, a low-pass filter and an analog-to-digital converter connected in sequence. The transimpedance amplifier and the low-pass filter are configured in a wideband mode and a filtering mode. An input end of the data processing circuit is connected with an output end of the signal receiving circuit. The data processing circuit is further connected with the transimpedance amplifier and the low-pass filter. The data processing circuit is used for sending a control signal to switch the modes of the transimpedance amplifier and the low-pass filter. Compared with a conventional receiver, the application saves area and power and has more accurate signal strength estimation.

A contextual communication system includes an external device with a communication receiver and an electronic control unit (ECU). The ECU includes computing hardware and storage hardware that stores actions and action settings. The computing hardware includes a contextual communication function that has a telematics system configured to detect the external device and a contextual event. The contextual communication function is configured to selectively issue a contextual alert based on the detected external device and in response to the contextual event.

A power dolly includes a planar platform supported by at least three wheels, a battery mechanically coupled to the planar platform and located between the wheels, a mains input connector configured to receive mains power and to charge the battery, a battery charger electrically coupled to the mains input connector and configured to charge the battery using mains power received at the mains input connector, an inverter configured to receive direct current (DC) power from the battery and to provide alternating current (AC) power at an inverter output connector, and a wireless communication receiver configured to receive a control signal and to output the received control signal via a control output connector.

Road hazard warning systems and methods that deliver real-time, point-of-need alerts to road users. One system includes a command station with at least one sensor responsive to hazardous roadway conditions, a two-way communications system, a control system, and a power supply. The command station transmits hazard signals when a threshold condition is detected or when hazard information is received from external sources. A tactical station includes a communications receiver, a control system, a power supply, and a warning system such as flashing lights, illuminated signage, or reflectors. In some embodiments, multiple combined command / tactical stations are deployed along a roadway, each configured to detect hazards, exchange signals, and activate warnings. Sensors may include water depth, flow velocity, or pressure devices. Power may be supplied by a battery and solar panel. Methods are disclosed for detecting hazards, transmitting signals, and activating warnings to mitigate roadway risks.

The invention discloses an electromagnetic wave phase-polarization decoupling control system, belongs to the technical field of optical communication and quantum optics, and is suitable for equipment such as a quantum communication receiver and a laser radar. The invention aims to solve the problems of high bit error rate (greater than 8%) caused by phase symbol chaos and crosstalk (crosstalk coefficient is only-25dB) caused by polarization and phase coupling in the prior art. The system realizes decoupling through two core mechanisms: one is a phase expression forced unification module which uniformly converts an input electromagnetic wave phase into a standard form e (i (kx omegat)), comprises a phase detector, a converter and a calibration unit, and eliminates symbol chaos; and the Hilbert space tensor product regulation and control hardware realizes independent regulation and control of a polarization state and a phase state through a polarization liquid crystal array, a phase modulator and a tensor product operation unit based on a quantum state tensor product principle (psi gt, = [polarization state] [phase state]), and cuts off a physical coupling path. The method has the beneficial effects that the phase symbol chaos rate is reduced to 0%, and the crosstalk coefficient is increased to-45dB; when the method is applied to quantum communication, the bit error rate is less than or equal to 1.2%, and the key distribution rate is doubled; when the method is applied to the laser radar, the ranging error is less than or equal to + / -1cm, and the haze environment target recognition rate is improved from 60% to 85%. According to the invention, efficient decoupling of phase and polarization is realized, and the performance of optical communication and quantum optical equipment is remarkably improved.

The present invention provides a method for estimating an interference power threshold based on unmanned aerial vehicle (UAV) frequency hopping communication, comprising the following steps: detecting the communication signal parameters and azimuth angles of the uplink and downlink of the UAV frequency hopping communication system using a radio frequency signal detection device; obtaining the distance, azimuth, pitch angle, and altitude parameters between the UAV and the interference system through radar detection, and calculating the communication distance between the UAV and the ground station and the ground station transmission power based on the detected communication signal parameters and location information; setting a minimum bit error rate value for blocking UAV communication, calculating the minimum signal-to-interference ratio threshold acceptable to the UAV communication receiver, and determining the interference power threshold for the UAV frequency hopping communication. The present invention, based on the interference power threshold estimation method and system for UAV frequency hopping communication, can estimate the interference power threshold for civilian UAVs based on the characteristic parameters of the UAV frequency hopping communication, meeting actual application scenarios and optimizing the interference effect.

A robot control system is presented for a monitored environment. The control system includes: a central computer; and a plurality of sensors in data communication with the central computer. Each sensor is at a fixed location in the monitored environment and is configured to detect location of objects in the monitored environment. A plurality of robots also resides in the monitored environment. Each robot is comprised of a wireless communication receiver, a regulator, an actuator and a power source, such that the regulator receives motion commands directly from the central computer via the wireless communication receiver. It is noted that the robots are not configured with sensors to help navigate the robot.

A system (100) includes a test transmitter (102) including a pseudorandom bit sequence (PRBS) generator and a signal generation circuit. The PRBS generator is configured to generate a PRBS. The signal generation circuit is configured to generate a test signal comprising a repetition of a truncated portion of the PRBS such that a period of the repetition is shorter than a period of the PRBS.