ULTRABREITBANDIGES RECEIPT PROCEDURE AND - DEVICE WITH SUPER+RENEWABLE DETECTOR

Method of and apparatus for synchronisation

A method of synchronisation for pulsed wireless communication between a first transceiver and a second transceiver, the method comprising the steps of : transmitting a pulse signal from a first transceiver to a second transceiver; transmitting a reflection signal from the second transceiver to the first transceiver if the transmitted pulse signal is received at the second transceiver within an active reception period of the second transceiver; and detecting the reflection pulse to determine synchronisation between the first transceiver and the second transceiver. Apparatus for carrying out the method is also described. In an embodiment of the invention the reflection signal is generated by a super-regenerative oscillator.

METHOD OF AND APPARATUS FOR SYNCHRONIZATION

A method and apparatus of synchronizing pulsed wireless communication between a first transceiver and a second transceiver. It includes the steps of transmitting a pulse signal from a first transceiver to a second transceiver; transmitting a reflection signal from the second transceiver to the first transceiver if the transmitted pulse signal is received at the second transceiver within an active reception period of the second transceiver; and detecting the reflection pulse to determine synchronization between the first transceiver and the second transceiver. Embodiments of the invention also relate to an apparatus for carrying out the method. In one embodiment, the reflection signal is generated by a super-regenerative oscillator.

RADIO UNIT RECONFIGURATION

A super-regenerative transceiver that has an antenna interface for an antenna is self-tuned with a self-tuning unit configured. The self-tuning unit makes the transceiver to repeatedly perform a self-tuning cycle until the amplitude meets a predetermined detection condition or a predetermined criterion is met. The self-tuning cycle involves the following: transmitting to the antenna a probe signal with one or more pulses; receiving from the antenna a ringing detection signal; determining if the ringing detection signal reflects tails of the probe signal with amplitude meeting a predetermined detection condition; and adjusting of the tuning of the super-regenerative transceiver if the amplitude does not meet the predetermined detection condition.

Method of non-uniform wavelet bandpass sampling

A compressed sensing method based on non-uniform wavelet bandpass sampling. A K-sparse signal of interest is projected onto a sequence of waveforms succeeding one another at the bandpass sampling rate, the waveforms belonging to an overcomplete dictionary, the parameters of the waveforms depending on the characteristics of the bands of the signal. The correlation values are then non-uniformly sampled to provide a compressed representation of the signal.

Radio unit reconfiguration

A super-regenerative transceiver that has an antenna interface for an antenna is self-tuned with a self-tuning unit configured. The self-tuning unit makes the transceiver to repeatedly perform a self-tuning cycle until the amplitude meets a predetermined detection condition or a predetermined criterion is met. The self-tuning cycle involves the following: transmitting to the antenna a probe signal with one or more pulses; receiving from the antenna a ringing detection signal; determining if the ringing detection signal reflects tails of the probe signal with amplitude meeting a predetermined detection condition; and adjusting of the tuning of the super-regenerative transceiver if the amplitude does not meet the predetermined detection condition.

DEVICE AND METHOD FOR ULTRAWIDEBAND RECEPTION USING A SUPER-REGENERATIVE DETECTOR

Receiver and reception method of receiving pulsed ultrawideband radio-frequency signals employ an amplification phase, an oscillation phase sensitive to an instability control signal, a shaping phase, and a demodulation phase, and further including an adaptation control step for adapting the receiver or the reception method to the type of signals to be received.

Ultrabreitbandiges Empfangs-Verfahren und -Vorrichtung mit superregenerativem Detektor

OSCILLATION DETECTOR

An oscillation detector having an RF oscillator configured to be synchronized with a first frequency and a comparator for distinguishing the synchronized state from the non-synchronized state of the radiofrequency oscillator on the basis of an oscillating signal produced by the radiofrequency oscillator and indicating the presence of oscillations in a frequency band around the first frequency in response to identifying the synchronized state and, in alternation, indicating the absence of oscillations in this frequency band otherwise.

Method of and apparatus for synchronisation

Oscillation detector

An oscillation detector having an RF oscillator configured to be synchronized with a first frequency and a comparator for distinguishing the synchronized state from the non-synchronized state of the radiofrequency oscillator on the basis of an oscillating signal produced by the radiofrequency oscillator and indicating the presence of oscillations in a frequency band around the first frequency in response to identifying the synchronized state and, in alternation, indicating the absence of oscillations in this frequency band otherwise.

Device and method for ultrawideband reception using a super-regenerative detector

Receiver and reception method of receiving pulsed ultrawideband radio-frequency signals employ an amplification phase, an oscillation phase sensitive to an instability control signal, a shaping phase, and a demodulation phase, and further including an adaptation control step for adapting the receiver or the reception method to the type of signals to be received.

Device and method for receiving RF signals based on heterodyne architecture using complex IF subsampling

An RF signal reception device including: a transposition device of signals of frequency fRF to a first intermediate frequency IF1 Подробнее

Phase-locked loop with multiple degrees of freedom and its design and fabrication method

A design method for a phase-locked loop comprises: a controlled-frequency oscillator; a phase comparator, to determine a phase difference between an output signal of the controlled-frequency oscillator and a reference signal; a corrector to receive as input a signal representative of the phase difference and to generate at its output a first correction signal; at least one second corrector, to receive as input a signal representative of or affected by a phase noise of the reference signal or of the output signal of the controlled-frequency oscillator and to generate at its output a second correction signal; and a circuit for generating a slaving signal for the controlled-frequency oscillator on the basis of the first and second correction signals; the method using the H-infinity method. Method for fabricating such a loop comprising a design step implementing this method. Phase-locked loop thus obtained.

METHOD FOR BANDPASS SAMPLING BY POSITION MODULATED WAVELETS

The present invention relates to a wavelet bandpass sampling method, with low aliasing and a corresponding device. The analogue signal to sample is correlated with a sequence of wavelets succeeding each other with a rate fp of which the positions in the sequence are temporally modulated from arguments of a CAZAC sequence, notably a Zadoff-Chu sequence. The correlation results are next sampled at a frequency fs≤fp and digitally converted to provide a compressed representation of the signal. The temporal modulation of the positions of the wavelets makes it possible to obtain incoherent aliasing of the correlation signal in the sampling band and thereby to reduce aliasing.

Method for bandpass sampling by position modulated wavelets

The present invention relates to a wavelet bandpass sampling method, with low aliasing and a corresponding device. The analogue signal to sample is correlated with a sequence of wavelets succeeding each other with a rate fp of which the positions in the sequence are temporally modulated from arguments of a CAZAC sequence, notably a Zadoff-Chu sequence. The correlation results are next sampled at a frequency fs≤fp and digitally converted to provide a compressed representation of the signal. The temporal modulation of the positions of the wavelets makes it possible to obtain incoherent aliasing of the correlation signal in the sampling band and thereby to reduce aliasing.

DEVICE AND METHOD FOR RECEIVING RF SIGNALS BASED ON HETERODYNE ARCHITECTURE USING COMPLEX IF SUBSAMPLING

An RF signal reception device including: a transposition device of signals of frequency fRF to a first intermediate frequency IF1 Подробнее