Disclosed are techniques for wireless communication. In an aspect, a band-pass filter of a radio frequency front end (RFFE) of a user equipment (UE) receives an analog radio frequency (RF) signal having a first bandwidth associated with a first sampling rate, the analog RF signal comprising a positioning reference signal (PRS). An analog-to-digital converter (ADC) of the UE samples the analog RF signal at a second sampling rate to generate a digital RF signal representing the analog RF signal, wherein the ADC operates at a second bandwidth lower than the first bandwidth, and wherein the second sampling rate is lower than the first sampling rate by an inverse of a folding factor for the first bandwidth. The digital RF signal is then output to a baseband processor of the UE.

The present disclosure discloses a method and a device for extracting broadband error calibration parameters, and a computer-readable storage medium. The method includes: performing frequency band splitting on link broadband signals of an ultra-wide band system according to a received frequency band index table to generate sub-bands; extracting an amplitude error and a phase error of each sub-band; and iteratively weighting and accumulating, according to the frequency band index table and a preset broadband weight table, the amplitude error and the phase error of each sub-band one by one to an initial amplitude error compensation parameter and an initial phase error compensation parameter respectively, to synthesize and extract broadband error calibration parameters. The present disclosure can adaptively match a working bandwidth of the current ultra-wide band system, and perform iterative solution on error parameters of a working area in real time, thereby having the advantages of ultra-wide band, high performance, low power consumption and high flexibility.

A method is provided for estimating at least one characteristic of a signal received by a receiver, the signal having been transmitted in succession by a plurality of antennas in successive time segments, each segment being dedicated to one separate antenna, the signal being modulated into the form of pulses according to ultra-wideband modulation. The method includes steps of: receiving and digitizing the signal, computing the product of multiplication of each symbol of the received signal by the complex conjugate of the corresponding transmitted symbol, for each segment and for each symbol of the signal received for this segment, estimating a phase error by means of a phase-locked loop applied to the product, for each segment, determining a reference phase by means of a linear regression applied to the phase errors estimated for all of the segments, determining, for at least one pair of antennas, a phase difference between the signals transmitted by the antennas of the pair, on the basis of the difference between the reference phases computed for the segments associated with the antennas.

According to certain embodiments, an electronic device comprises: a wireless communication module configured to support ultra-wide band (UWB) communication; and at least one processor operatively connected with the wireless communication module, wherein the at least one processor is configured to: set the wireless communication module to a wake-up state; when a given number of first ranging response messages (RRMs) are received from second external electronic devices after receiving a first ranging initiation message (RIM) from a first external electronic device in a RIM slot of a first ranging round, set the wireless communication module to a sleep state after receiving a first ranging final message (RFM) from the first external electronic device in a RFM slot of the first ranging round until a RIM slot of a second ranging round is reached after the first ranging round; set the wireless communication module to the wake-up state in the RIM slot in the second ranging round; and set the wireless communication module to the sleep state if a second RIM is not received from a third external electronic device in the RIM slot in the second ranging round.

An electronic circuit for detecting an ultra-wideband pulse, the electronic circuit comprising an analog input terminal configured for connection to an ultra-wideband antenna, a low noise amplifier connected to the analog input terminal and configured to amplify one or more ultra-wideband pulses received via the ultra-wideband antenna, and a comparator connected to the low noise amplifier and configured to generate a wake-up trigger signal for ultra-wideband pulses exceeding a pre-defined pulse amplitude threshold.

An ultra-wideband, UWB, receiver module (213) comprising: an antenna for wirelessly receiving UWB signalling from a UWB transmitter module (212) and a processor. The processor is configured to: determine a channel impulse response, CIR, (519) of the wirelessly received UWB signalling, wherein the CIR comprises a plurality of channel taps each having a tap-response-value; identify a predetermined feature (520) in the CIR and an associated channel tap; and based on the channel tap that is associated with the identified feature (520) in the CIR (519), synchronize the UWB receiver module (213) for reception of subsequent UWB signalling.

A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to detect a specific element in chronological information based on respective pulse signals received by the plurality of wireless communication sections, on the basis of respective pieces of chronological information including, as elements related to time, information that chronologically changes and that is obtained when the plurality of wireless communication sections receive the respective pulse signals transmitted from the other communication device, verify whether each of a plurality of the detected specific elements is based on the pulse signal coming through a shortest path, and estimate an angle from which the pulse signal has come while using axes extending from reference point, on the basis of the plurality of specific elements that are verified as elements based on the pulse signals.

A method for receiving a modulated signal, includes the steps of receiving a signal modulated by a pulse position modulation (PPM) or a pulse width modulation (PWM) or a pulse amplitude modulation (PAM) or an on-off keying (OOK) amplitude modulation, corresponding to the transmission of a sequence of one or more consecutive digital symbols, squaring the received signal, projecting the square of the received signal onto multiple components of an analogue signal basis in order to obtain an analogue vector of dimension equal to the number of projection components, the components of the analogue signal basis being non-constant functions, digitizing the analogue vector into a digital vector, jointly demodulating the components of the digital vector by way of a maximum likelihood algorithm in order to estimate the transmitted sequence of one or more consecutive digital symbols.

A communication device includes: a plurality of wireless communication sections, each of which is configured to wirelessly receive a signal from another communication device; and a control section configured to perform a detection process of detecting specific elements with regard to a plurality of correlation computation results, each of which is obtained by correlating a first signal that is transmitted from the other communication device and each of second signals at the designated interval and includes a correlation value indicating magnitude of correlation between the first signal and the second signal as an element obtained at the designated interval, and control a change process of treating a wireless communication section having earliest time corresponding to the specific element as a first wireless communication section among the plurality of wireless communication sections, treating the other wireless communication section as a second wireless communication section among the plurality of wireless communication sections.

In one embodiment, an electronic device may include a plurality of antennas, at least one wireless communication module configured to transmit and receive wireless signals through the plurality of antennas, and at least one processor operatively connected to the wireless communication module. The at least one wireless communication module or the at least one processor may be configured to, based on one or more ultra-wide band (UWB) signals received from a target device, obtain first pieces of phase information corresponding to first channel impulse response (CIR) indices and second pieces of phase information corresponding to second CIR indices, and determine information on the one or more UWB signals based on a slope between the first pieces of phase information and a slope between the second pieces of phase information.