Commissariat &#xc0; L'&#xc9;nergie Atomique Et Aux &#xc9;nergies Alternatives

Nokia Corporation

Commissariat a L'energie Atomique

Cornell University

Centre National De La Recherche Scientifique

Universite Claude Bernard – Lyon1

Ecole Centrale De Lyon

Michael Pelissier

Jari-Jukka Harald Kaaja

Dominique Morche

Christoph Emanuel Studer

Joni Jorma Marius Jantunen

Patrick Villard

Mykhailo Zarudniev

Jaakko Varteva

Risto Heikki Sakari Kaunisto

Bertrand Gomez

Anton Korniienko

Luis Lolis

Eric Blanco

Gèrard Billiot

Olesia Mokrenko

Gèrard Scorletti

Marguerite Marnat

Gérard Scorletti

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 fof 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 f&#x2264;fand 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

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.

Method of non-uniform wavelet bandpass sampling

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.

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

An RF signal reception device including: a transposition device of signals of frequency fto a first intermediate frequency IF&#x3c;f; a first bandpass filter centered on IF; a sampler at a frequency fs&#x3c;IF; a second discrete-time filter centered on a second intermediate frequency IF=&#x3b1;&#xb7;fs/M+fs/(M&#xb7;n); a decimation device of a factor M; an analog-digital convertor to operate at a frequency fs/M; where &#x3b1;, n and M are strictly positive real numbers chosen such that: &#x3b1;&#x3c;fs/(2&#xb7;BW&#xb7;M), and BW/2&#x3c;fs/M&#xb7;n), with BW: bandwidth of a channel of the received RF signals.

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

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.

Radio unit reconfiguration

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 ultrawideband reception using a super-regenerative detector

Growing community of inventors

Grenoble, France

Michael Pelissier