7 results about "Impulse radio" patented technology

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.

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.

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.