46 results about "Communications receiver" patented technology

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 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.

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

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.

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.

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.

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.

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.

Reduced complexity maximum likelihood sequence detectors (rMLSDs) for detecting multi-bit symbols, such as symbols found in pulse amplitude modulation (PAM), quadrature amplitude modulation (QAM), and phase shift keying (PSK) signal constellations with more than two constellation points, are disclosed. One illustrative digital communication receiver includes an initial equalizer that derives an initial sequence of symbol decisions from a filtered received signal, each symbol decision in the initial sequence having a second possible symbol decision, and an rMLSD that derives a final sequence of symbol decisions by evaluating a state metric for only each symbol decision in the initial sequence and its second possible symbol decision.

The invention relates to the technical field of wireless communication, and discloses a simplified AGC-based frame synchronization method for a wireless communication receiver of a satellite portable station, which is characterized by comprising the following steps of: receiving a signal and separating an IQ component, simplifying AGC processing, preprocessing the signal, performing differential processing and simplifying correlation operation, and judging a peak value and completing frame synchronization. A feed-forward AGC structure is adopted, detection calculation is simplified through Taylor expansion first-order approximation, frequency offset and phase offset influences are eliminated through differential processing, correlation operation is simplified, a preprocessing mode of normalization processing or self-adaptive threshold adjustment is matched, efficient frame synchronization of a wireless communication receiver is achieved, system operation complexity and hardware resource consumption are reduced, and the system performance is improved. And the frame synchronization real-time performance and stability are improved.

The application provides a method and device for arbitrary sampling rate conversion of a communication receiver, comprising: performing down-rounding operation according to a sampling frequency of a sampling signal and a sampling frequency of the sampling signal required by a signal processor to determine an integral result; performing integral times down-sampling on the sampling signal according to the integral result to obtain a sampling result corresponding to the integral times down-sampling; performing curve fitting based on the sampling result corresponding to the integral times down-sampling to obtain a continuous signal; calculating a sampling time interval after decimal times decimation according to the sampling frequency of the sampling signal required by the signal processor; and performing decimal times decimation on the continuous signal based on the sampling time interval after the decimal times decimation to complete the arbitrary sampling rate conversion. The application has good decimation effect on any decimal times sampling frequency, has wide application range, and is more suitable for practical application.

Disclosed herein are methods for transmitting asynchronous event data via a synchronous communication interface using an expected event rate, and associated imaging systems. In one embodiment, an imager includes an array of event vision pixels, and a synchronous communication transmitter configured to transmit frames of data to a synchronous communication receiver. The pixels generate event data based on activity within an external scene. The imager transmits, at a first time and to the receiver, an expected amount of data to be included in a frame transmitted to the receiver at a second time. The expected amount of data can be based on a prediction of an amount of event data that will be generated at a future point in time for transmission to the receiver in the frame. The imager can then transmit the frame to the receiver at the second time with an amount of data corresponding to the expected amount of data.

This application discloses a mobile terminal-based unmanned vehicle debugging system and method. The system includes a mobile terminal and a vehicle communication interface module. The unmanned vehicle includes a vehicle OBD interface module, an on-board communication receiver, an on-board communication network, and a vehicle controller. The mobile terminal stores unmanned vehicle debugging, control, and diagnostic software programs. In wired debugging mode, one end of the vehicle communication interface module is connected to the mobile terminal, and the other end is connected to the vehicle OBD interface module. The vehicle OBD interface module is connected to the vehicle controller through the on-board communication network. In wireless debugging mode, the mobile terminal communicates with the on-board communication receiver through a wireless network. The on-board communication receiver is connected to the vehicle controller through the on-board communication network.

This disclosure provides a laser communication method, a laser communication receiver, a transmitter, and a laser communication system. The method applied at the receiver includes: receiving a target light signal emitted by the transmitter using a first telescope; processing the target light signal using a first polarization beam splitter to obtain first polarized light and second polarized light; processing any one of the first polarized light and second polarized light using a first optical wave splitter to obtain multiple first sub-signals with different wavelengths; processing two first sub-signals with the same wavelength using a balanced detection device to obtain a transmission sub-signal, wherein the transmission signal includes multiple transmission sub-signals with different wavelengths; and processing the multiple transmission sub-signals using a digital signal processor to obtain a transmission signal.

An optical wireless communication receiver (100 / 600) comprising: one or more harvesting solar cells (112) configured to convert light into electrical energy; one or more communication solar cells (122) configured to convert light into electrical signals with information embedded; a rechargeable battery (130) configured to store electrical energy generated by the one or more harvesting solar cells (112); a communication module (150) configured to decode the electrical signals generated by the one or more communication solar cells (122) and extract the information; a first switch (114) configured to connect the one or more harvesting solar cells (112) to the rechargeable battery (130) to achieve a first harvesting state, and to the communication module (150) to achieve a second communication state; a second switch (124) configured to connect the one or more communication solar cells (122) to the communication module (150) to achieve a first communication state, and to the rechargeable battery (130) to achieve a second harvesting state; and a microprocessor (140) configured to control the first switch (114) and the second switch (124).

The present disclosure relates to the technical field of mobile communications. Disclosed are a method for communicating a sidelink positioning reference signal (SL-PRS), and a device. The method applicable to a sidelink (SL) communication receiver terminal. The method includes: transmitting or receiving the SL-PRS based on an SL-PRS configuration matching a sidelink discontinuous reception (SL-DRX) configuration.

This invention relates to an ambient backscatter communication receiver and a blind symbol detection method based on an LNA. The method includes constructing an ambient backscatter communication received signal model using an LNA by fusing the linear gain and nonlinear distortion of the LNA based on an ambient backscatter communication network model; designing energy detection rules based on the established received signal model, deriving an approximately optimal detection threshold that minimizes the bit error rate, and analyzing the bit error rate of the energy detector under LNA application; estimating the parameters required for the approximately optimal detection threshold based on the characteristics of the received signal samples, and calculating the estimated value of the approximately optimal symbol detection threshold based on the estimated parameters. This invention improves signal quality in low ambient RF source transmit power scenarios through LNA, and ensures detection reliability through near-optimal threshold and parameter estimation, ultimately significantly improving the symbol detection performance of the ambient backscatter communication receiver and supporting low-power, high-reliability applications of ambient backscatter communication in the Internet of Things.

This disclosure relates to a data storage method, a data decoding method, an apparatus, a device, and a chip, belonging to the field of communication technology. The method includes: determining the actual value range corresponding to a given resource block based on the actual value range of each target data carried by any resource block in the communication data; scaling any target data carried by the corresponding resource block based on the difference information between the actual value range and a reference value range, so as to update the corresponding target data with the scaled data; quantizing the corresponding target data based on a first sub-range in which the updated target data is located, to obtain quantized data; and storing each quantized data in the storage space of the communication receiver. Therefore, this disclosure proposes an adaptive scaling mechanism that can dynamically adjust the actual value range, and proposes a segmented quantization mechanism that helps improve quantization accuracy, reduce information loss, and thus improve the accuracy of data decoding.

A communication method, apparatus, electronic device and storage medium for a computing power cluster are provided. An implementation of the method includes: during a process of communicating with a communication receiver using Remote Direct Memory Access (RDMA) protocol, obtaining a first packet loss rate corresponding to the RDMA protocol; in response to the first packet loss rate being higher than a first preset packet loss rate, initiating a first handshake request to the communication receiver for requesting to switch to Transmission Control Protocol (TCP) for communication; receiving a first handshake response returned by the communication receiver for the first handshake request, and determining a first starting transmission position of data according to a last data receiving position in the first handshake response; and communicating, by using the TCP, with the communication receiver starting from data corresponding to the first starting transmission position.

A method of joint communication and sensing of a target obstacle includes deploying an integrated sensing and communication (ISAC) node having an ISAC transmitter having M transmitting antenna(s) and a radar receiver having L receiving antenna(s), wherein the M and L are integers; transmitting radio frequency (RF) signals carrying data to a communication receiver by the M transmitting antenna(s) of the ISAC transmitter; receiving radio frequency (RF) signals reflected by the target obstacle by the L receiving antenna(s); and obtaining a sounding result based on the reflected radio frequency (RF) signals; wherein the RF signals are applied with cyclic shift diversity; and wherein the RF signals contain precoders which are selected by aligning a range of communication direction linked to a communication channel between the ISAC node and the communication receiver with minimal capacity loss based on the sounding result.

A Bluetooth wireless communication receiver and its control method are disclosed. The Bluetooth wireless communication receiver includes: a Bluetooth scanning module configured to scan for nearby HID devices; a Bluetooth connection module configured to establish a connection with the scanned Bluetooth HID devices; a service discovery module configured to acquire service information and descriptor information of the connected Bluetooth HID devices; a USB descriptor registration module configured to register the acquired descriptor information; a USB device disconnect and reconnect module configured to generate simulated disconnect / connection signals; a USB enumeration module configured to enumerate the Bluetooth wireless communication receiver as devices with the same descriptor information as the Bluetooth HID devices based on the simulated disconnect / connection signals; a data acquisition module configured to acquire data reported by the Bluetooth HID devices; and a mapping module configured to map data from a Bluetooth channel to a USB channel.

This invention proposes a distributed optical fiber sensing integrated system and its implementation method. The system includes a transmitter, a sensing receiver, a communication receiver, and a transmission link unit. The transmitter generates an LFM-PSK sensing integrated optical signal and one LFM optical signal. The sensing receiver performs matched filtering on the LFM-PSK sensing integrated optical signal and the Rayleigh scattering signal returned from the transmission link unit to detect and analyze changes in the phase information of the transmission optical fiber. The communication receiver performs heterodyne correlation detection on the LFM-PSK sensing integrated optical signal and the other LFM optical signal to reconstruct the PSK communication signal, and then obtains the original service signal based on the PSK communication signal. Compared with existing technologies, this system has a higher signal-to-noise ratio and better sensing performance in environments with strong noise interference.

The invention belongs to the technical field of wireless communication, and particularly relates to an environment backscatter communication receiver design method for multiple radio frequency sources. In a backscatter communication system, besides a radio frequency source, the backscatter communication system also comprises an uncontrollable single-antenna interference source, the interference source and the radio frequency source transmit information on the same resource block, a reflection device modulates own information bits to an environment radio frequency signal from the radio frequency source, and the reflection device backscatters the radio frequency signal of the interference source at the same time. According to the invention, based on the actual situation in the backscatter communication system, a received signal model is provided, a judgment rule is established, parameters required by the receiver are obtained, and the receiver design is realized by calculating the parameters. The method is suitable for the conditions that the wireless electromagnetic environment is complex and changeable and a plurality of same-frequency radio frequency sources exist in practical application.

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.

An optical communication system, receiver, and method for synchronizing a receiver with a transmitter to decode a data input stream transmitted by the transmitter and received at the receiver are provided, the method including receiving a data input stream at the receiver, the data input stream having a first data rate set based on a transmitter clock rate, generating a wave, obtaining a phase error between the data input stream and the generated wave, determining a synchronized clock rate by using the phase error to adjust a frequency of the generated wave to match the frequency of the generated wave to the transmitter clock rate of the data input stream, and using the synchronized clock rate to decode the data input stream to obtain data encoded in the data input stream.

The invention provides a relay-free ultra-long distance communication and perception integration method and system, and relates to the technical field of communication and perception integration based on optical fibers, and the method comprises the steps: generating a communication signal and a sensing probe signal through a communication and sensing integrated transmitter, inputting the communication signal and the sensing probe signal to a first end of an optical fiber link, and outputting the communication signal and the sensing probe signal from a second end of the optical fiber link, a sensing probe signal is output from the second end of the optical fiber link and is input to a communication receiver, the sensing probe signal is output from the second end of the optical fiber link and then is input to a loopback module, the loopback module divides the sensing probe signal into two paths of sub-probe signals, generates two paths of IF signals based on the two paths of sub-probe signals, and outputs the two paths of IF signals to the second end of the optical fiber link; the two paths of IF signals are transmitted to the optical fiber link and output to the sensing receiver from the first end of the optical fiber link, and the sensing receiver determines the vibration position on the optical fiber link based on the delay of the two paths of IF signals, so that the integration of communication and sensing is realized through the loopback module, the modes with higher system complexity, such as a GPS (Global Positioning System), are not needed, and the system complexity is lower.

The application provides a continuous time linear equalizer and a high-speed serial communication receiver thereof, and belongs to the technical field of integrated circuits, and comprises: a plurality of differential input pairs with different input common-mode voltage ranges; an input selection circuit configured to alternatively enable one of all the differential input pairs as a target differential input pair; a differential load circuit coupled to an output end of a differential input stage module and having an adjustable equivalent impedance; and a load control circuit configured to determine load configuration information in response to an input mode selection signal and adjust the equivalent impedance of the differential load circuit according to the load configuration information. The application establishes a linkage mechanism of input stage switching and load impedance adjustment through the input mode selection signal, automatically calls corresponding calibration parameters to eliminate the offset voltage in different modes while expanding the input common-mode voltage range, and significantly improves the adaptability and signal transmission quality of the high-speed interface circuit.

A control terminal includes: a wireless communicator that communicates with a plurality of lighting fixtures; a receiver that receives, from a user, a setting related to identification information indicating a group to which the plurality of lighting fixtures are to belong or control content to be instructed to the plurality of lighting fixtures; and an information processor that, when the plurality of lighting fixtures include an unset lighting fixture to which the setting has not been applied and the information processor instructs the plurality of lighting fixtures to participate in a first control to be performed by specifying the identification information, (a) instructs the plurality of lighting fixtures to participate in the first control by using the wireless communicator and further (b) instructs the unset lighting fixture to participate in same control as the first control by using the wireless communicator.

The invention relates to the technical field of wireless communication, in particular to a perception interleaving frequency division multiplexing waveform system oriented to communication perception integration, and the system comprises a transmitter which is used for modulating a symbol sequence into a time domain signal through a modulation matrix of a perception interleaving frequency division multiplexing waveform, and transmitting the time domain signal to a channel; the communication receiver is used for receiving the received signal transmitted by the channel and carrying out iterative processing on the received signal by utilizing a low-complexity detector so as to realize optimal recovery of the symbol sequence; the sensing receiver is used for realizing target identification through matched filtering and analyzing the sensing performance of the sensing interleaving frequency division multiplexing waveform through a fuzzy function; according to the scheme, optimal communication signal transmission, signal recovery and excellent sensing performance can be realized in a scene of integrating various communication sensing while the advantage of waveform randomness is reserved.