18 results about "Impulse radio" patented technology

Implementations of a method of detecting a plurality of radio pulses may include, using at least one signal processor: pre-processing a wideband intermediate frequency signal to form a channelized segment from a software defined radio; performing coherent single-pulse correlation using a spectrogram of the channelized segment; and performing multi-pulse combining with the spectrogram, and determining whether a pulse train including a plurality of radio pulses from a desired pulsed radio signal may be present in the spectrogram.

The invention relates to a method for operating a transceiver device (1), comprising the following steps to be performed by the transceiver device (1): transmitting a pulse radio signal (5) at a given time; receiving a reflected signal of the transmitted pulse radio signal (5); generating a channel impulse response that describes the reflected signal as a function of a path delay; determining a self-interference distance range of the path delay of the channel impulse response, wherein the reflected signal of the self-interference distance range describes a self-interference signal of the transceiver device (1); determining at least one target distance range of the path delay of the channel impulse response, wherein the reflected signal of the target distance range describes a signal of the target distance range;Determining a signal component of the target distance range signal correlated with the self-interference signal using an operator, wherein the operator maps the self-interference signal to the correlated signal component of the target distance range signal; determining a signal component of the signal uncorrelated with the self-interference signal by removing the signal component correlated with the self-interference signal using a correlation cancellation filter.

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) transmits, to a network entity, a Long-Term Evolution (LTE) positioning protocol (LPP) capabilities message, the LPP capabilities message including one or more capability parameters indicating capabilities of the UE to engage in a positioning session with at least one network node, the positioning session comprising an impulse radio ultra-wideband (IR-UWB) ranging procedure between the UE and the at least one network node, receives, from the network entity, an LPP assistance data message, the LPP assistance data message including one or more assistance parameters configuring the UE to perform at least the IR-UWB ranging procedure, and performs at least the IR-UWB ranging procedure based at least on the one or more assistance parameters.

The invention relates to a method for operating a transceiver device (1), comprising the following steps to be carried out by the transceiver device (1): transmitting an impulse radio signal (5) at a point in time; receiving a reflected signal of the transmitted impulse radio signal (5); generating a channel impulse response, which describes the reflected signal according to a path delay; determining a self-interference distance range of the path delay of the channel impulse response, wherein the reflected signal of the self-interference distance range describes a self-interference signal of the transceiver device (1); determining at least one target distance range of the path delay of the channel impulse response, wherein the reflected signal of the target distance range describes a signal of the target distance range; ascertaining a signal component of the signal of the target distance range correlated with the self-interference signal by means of an operator, wherein the operator maps the self-interference signal onto the correlated signal component of the signal of the target distance range; ascertaining a signal component of the signal uncorrelated with the self-interference signal by removing the signal component of the signal correlated with the self-interference signal by means of a correlation cancellation filter.

A system for monitoring a tension in a track of a work machine includes one or more sensors coupled to the work machine. A sensor, of the one or more sensors, is configured to obtain a distance information related to a distance between the sensor and the track of the work machine. The sensor includes a pulse Radio Detection and Ranging (RADAR) sensor. The system includes a controller including at least one memory and at least one processor. The memory is configured to store an expected distance between the sensor and the track of the work machine. The processor is configured to determine an actual distance between the sensor and the track of the work machine, based on the distance information obtained from the sensor and determine, based on the actual distance being greater than the expected distance, that the tension in the track is below a tension threshold.

Systems and methods include a communication gateway in a vehicle configured to establish a Bluetooth low energy (BLE) communication connection with a portable device and to instruct at least one sensor to perform ranging using impulse radio (IR) ultra-wide band (UWB) communication with the portable device based on information exchanged with the portable device via the BLE communication connection. A localization module configured to determine a location of the portable device based on the ranging performed by the at least one sensor with the portable device.

A system and method for synchronizing to a received signal in an IR-UWB receiver including sampling the received signal in a frequency that is less than a Nyquist frequency of the received signal; for each part of the sampled received signal that is equal in length to a synchronization symbol: calculating a cross-correlation between the synchronization symbol and the part of the sampled received signal that is equal in length to the synchronization symbol; calculating at least one autocorrelation, where each autocorrelation is performed between the results of the cross-correlation and the results of the cross-correlation delayed by a time lag that equals one or more time-durations of the synchronization symbol; accumulating the results of each of the at least one autocorrelation to obtain at least one coarse synchronization window; and analyzing the at least one coarse synchronization window to detect presence of the synchronization symbol in the received signal.

A method for synchronizing in a receiver an IR-UWB signal including data packets having a first preamble portion of at least two sequences of N pulses spaced by period T and each equal to a reference pulse weighted by a complex coefficient cn, n=0 to N−1 indicating the rank of the pulse in the first sequence, and a second preamble portion of at least two sequences equal to the complex conjugate of the first sequence, includes: considering NP successive samples sn, for n=0 to NP−1, of a slice, of duration NT, of the first and respectively second preamble portion of a received packet, determining the sequence of valuesxn=c⌊nP⌋*⁢sn,and respectively the sequence of valuesyn=c⌊nP⌋⁢zn,with Ts the sampling period T=P×Ts; determining the frequency fd and fg of the sequence xn and yn, respectively; and computing shift Δf applied to synchronize to the received signal.

To provide a system and method for vehicle passive entry / passive start (PEPS).SOLUTION: The communication gateway establishes a Bluetooth low energy communication connection with the mobile device. The localization module determines the location of the mobile device based on two way ranging using impulse radio ultra-wideband. The PEPS system performs a vehicle function, such as unlocking a door or trunk, allowing the vehicle to start, or activating wireless charging, based on the location of the portable device. Another system includes at least one low frequency (LF) antenna configured to transmit a wireless charging ping signal within a predetermined range to a portable device configured for wireless charging. The communication gateway authenticates the portable device based on a response to the ping signal by the portable device. The PEPS performs a vehicle function, such as unlocking a door or trunk or allowing the vehicle to be started, in response to authenticating the portable device.SELECTED DRAWING: Figure 22

Ultra-Wideband (UWB) technology exploits modulated coded impulses over a wide frequency spectrum with very low power over a short distance for digital data transmission. Such UWB systems through their receivers may operate in the presence of interfering signals and should provide for robust communications. Accordingly, an accurate and sharp filter that operates at low power is required and beneficially one that does not require a highly accurate power heavy clock. Further, many UWB applications require location and / or range finding of other elements and it would therefore be beneficial to provide a UWB based range finding and / or location capability removing the requirement to add additional device complexity and, typically significant, power consumption.

A method, system and apparatus for synthesis of peaky waveforms by means of multi-antenna transmitters are disclosed. According to one aspect, a method in a network node includes precoding a plurality of signals for OTA synthesis of an impulse radio (IR) waveform via a plurality of antennas of the network node so that radio frequency (RF) energy radiated by each antenna of the plurality of antennas combine over the air to form an IR waveform comprising at least one peak and having a peak to average power ratio (PAPR) that exceeds a PAPR of any signal radiated by any one antenna of the plurality of antennas. The method includes transmitting the precoded plurality of signals via the plurality of antennas.

Techniques for wireless communications are disclosed. In one aspect, a user equipment (UE) transmits a Long Term Evolution (LTE) Positioning Protocol (LPP) capability message to a network entity, the LPP capability message includes one or more capability parameters indicating a capability of the UE to engage in a positioning session with at least one network node, the positioning session comprising an Impulse Radio Ultra Wideband (IR-UWB) ranging procedure between the UE and the at least one network node, and performs at least the IR-UWB ranging procedure based at least on the one or more aiding parameters, the LPP assistance data message including one or more aiding parameters that configure the UE to perform at least the IR-UWB ranging procedure.

A system for monitoring tension in a track of a work machine includes one or more sensors coupled to the work machine. A sensor of the one or more sensors is configured to obtain distance information related to a distance between the sensor and the track of the work machine. The sensor includes a pulsed radio detection and ranging (RADAR) sensor. The system includes a controller including at least one memory and at least one processor. The memory is configured to store an expected distance between the sensor and the track of the work machine. The processor is configured to determine an actual distance between the sensor and the track of the work machine based on the distance information obtained from the sensor, and determine that the tension in the track is below a tension threshold based on the actual distance being greater than the expected distance.

Systems and methods for simultaneously recovering and separate sounds from multiple sources using Impulse Radio Ultra-Wideband (IR-UWB) signals are described. In one embodiment, a device can be configured for generating an audio signal based on audio source ranging using ultrawideband signals. In an embodiment the device includes, a transmitter circuitry, a receiver circuitry, memory and a processor. The processor configured to generate a radio signal. The radio signal including an ultra-wideband Gaussian pulse modulated on a radio-frequency carrier. The processor further configured to transmit the radio signal using the transmitter circuitry, receive one or more backscattered signals at the receiver circuitry, demodulate the one or more backscattered signals to generate one or more baseband signals, and generate a set of data frames based on the one or more baseband signals.

The utility model discloses an ultra-wideband radio astronomical pulse radio achromatic terminal, which is characterized by comprising an ADC (Analog to Digital Converter) sampling module used for carrying out multi-channel ultra-wideband concurrent sampling on baseband signals after radio frequency mixing; sampled data passes through the PFB multiphase filtering module, the FFT operation module and the frequency spectrum accumulation control module to obtain superposed spectral line data, and the superposed spectral line data is packaged and then sent to the GPU video memory module. The GPU video memory module comprises a shared memory and a global memory; the GPU high-spectral-resolution operation module processes the cached data to obtain ultrahigh-spectral-resolution frequency spectrum data and caches the ultrahigh-spectral-resolution frequency spectrum data into a shared memory; the GPU coherent achromatic operation module carries out alignment multiplication on the spectrum data with the ultrahigh spectral resolution and the CHIRP dispersion function parameter matrix to obtain pulse radio signal spectrum data after correlation achromatic; and the GPU inverse Fourier transform operation module carries out inverse Fourier transform on the pulse radio signal frequency spectrum data after correlation achromatic dispersion to complete coherent achromatic dispersion.

One or more aspects of this disclosure relate to the usage of an impulse radio ultra-wideband (IR-UWB) radar to reconstruct a cross-sectional image of subject in a noninvasive fashion. This image is reconstructed based on the pre- and post-processing of recorded waveforms that are collected by the IR-UWB radar, after getting reflected-off the subject. Furthermore, a novel process is proposed to approximate the different tissues' dielectric constants and, accordingly, reconstruct a subject's cross-sectional image.

The invention relates to an iron tower positioning method and device, computer equipment and a storage medium. The method comprises the following steps: receiving a reference station carrier phase observation value, a satellite signal and a reference station coordinate through a real-time dynamic differential RTK sensor; determining RTK positioning information of the iron tower based on the carrier phase observation value, the satellite signal and the reference station coordinate; receiving and transmitting a pulse signal through a pulse radio ultra wide band IR-UWB sensor so as to determine pulse positioning information of the iron tower; fusing the RTK positioning information and the pulse positioning information to determine target positioning information of the iron tower; wherein the RTK sensor and the IR-UWB sensor are arranged on an iron tower, and / or are arranged in a preset distance range of the iron tower. The position of the iron tower is measured by fusing the RTK technology and the IR-UWB technology, and the accuracy of the measured position of the iron tower is improved.

A runway intrusion detection and warning system (100) for monitoring at least one entity (200), the system comprising an airport signaling device (801.1), where each of the one or more airport signaling devices (801.1) comprises a sensor unit comprising an ultra-wideband pulsed radio module, the ultra wide band pulse radio module is configured to at least transmit and / or receive at least one ultra wide band pulse radio signal for object detection; a traffic monitoring and management unit (700) in data communication with the sensor unit of the airport signaling device, the traffic monitoring and management unit (700) is configured to determine at least one traffic parameter (such as intrusion) of at least one entity (200) depending on traffic data supplied by sensor units of at least one or more airport signaling devices, the data is extracted from at least one ultra-wideband pulsed radio signal received by at least one of the one or more airport signaling devices.