Patents by Inventor Alberto Ginesi
Alberto Ginesi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 10749596Abstract: A method of controlling transmission of signals in a group of beams emitted by a satellite, wherein each beam has an associated area of coverage, includes adjusting an allocation of a channel resource by re-distributing portions of the channel resource among the beams in the group of beams in accordance with respective capacity demands for the areas of coverage of the beams in the group. The method further includes obtaining, for each of the areas of coverage, an indication of a signal quality from a terminal in the respective area of coverage for the adjusted allocation of the channel resource, and applying a co-channel interference mitigating technique to the group of beams in accordance with the obtained indications of the signal quality. The application further relates to an apparatus for performing such method.Type: GrantFiled: June 10, 2016Date of Patent: August 18, 2020Assignee: European Space AgencyInventors: Alberto Ginesi, Pantelis-Daniel Arapoglou, Emiliano Re
-
Publication number: 20190305842Abstract: A method of controlling transmission of signals in a group of beams emitted by a satellite, wherein each beam has an associated area of coverage, includes adjusting an allocation of a channel resource by re-distributing portions of the channel resource among the beams in the group of beams in accordance with respective capacity demands for the areas of coverage of the beams in the group. The method further includes obtaining, for each of the areas of coverage, an indication of a signal quality from a terminal in the respective area of coverage for the adjusted allocation of the channel resource, and applying a co-channel interference mitigating technique to the group of beams in accordance with the obtained indications of the signal quality. The application further relates to an apparatus for performing such method.Type: ApplicationFiled: June 10, 2016Publication date: October 3, 2019Inventors: Alberto Ginesi, Pantelis-Daniel Arapoglou, Emiliano Re
-
Patent number: 10270520Abstract: A, method and apparatus for wirelessly transmitting data to a plurality of terminals in each of a plurality of beams through a plurality of transmit feeds includes selecting, for each beam, two or more terminals among the plurality of terminals in the beam as a subgroup of terminals, on the basis of channel state information of the plurality of terminals; determining, for each beam, equivalent channel state information representing the subgroup of terminals in the beam on the basis of the channel state information of the terminals of at least one of the plural subgroups of terminals; and determining a set of weight coefficients that relate the plurality of transmit feeds to a plurality of signals that are intended for transmission in the plurality of beams on the basis of the equivalent channel state information representing the plural subgroups of terminals.Type: GrantFiled: April 14, 2015Date of Patent: April 23, 2019Assignee: European Space AgencyInventors: Pantelis-Daniel Arapoglou, Alberto Ginesi, Giorgio Taricco, Dimitrios Christopoulos, Symeon Chatzinotas, Bjorn Ottersten, Miguel Angel Vazquez, Ana Isabel Perez-Neira, Stefano Andrenacci, Alessandro Vanelli Coralli
-
Patent number: 10116476Abstract: A method for demodulating a received signal relating to a sequence of transmitted symbols that have been modulated by continuous phase modulation includes normalizing samples of a sequence of samples generated from the received signal, to obtain a normalized sequence of samples, wherein an amplitude of each sample of the normalized sequence of samples has an absolute value equal to unity; estimating, on the basis of the normalized sequence of samples, a time offset and a frequency offset of the received signal, and using the estimated time offset and the estimated frequency offset for compensating the normalized sequence of samples for the time and frequency offsets, to obtain a compensated sequence of samples; and determining a sequence of symbols corresponding to the transmitted sequence of symbols on the basis of the compensated sequence of samples.Type: GrantFiled: January 22, 2014Date of Patent: October 30, 2018Assignee: European Space AgencyInventors: Giulio Colavolpe, Alessandro Ugolini, Tommaso Foggi, Juan Lizarraga Cubillos, Alberto Ginesi, Stefano Cioni
-
Publication number: 20170149493Abstract: A, method and apparatus for wirelessly transmitting data to a plurality of terminals in each of a plurality of beams through a plurality of transmit feeds includes selecting, for each beam, two or more terminals among the plurality of terminals in the beam as a subgroup of terminals, on the basis of channel state information of the plurality of terminals; determining, for each beam, equivalent channel state information representing the subgroup of terminals in the beam on the basis of the channel state information of the terminals of at least one of the plural subgroups of terminals; and determining a set of weight coefficients that relate the plurality of transmit feeds to a plurality of signals that are intended for transmission in the plurality of beams on the basis of the equivalent channel state information representing the plural subgroups of terminals.Type: ApplicationFiled: April 14, 2015Publication date: May 25, 2017Inventors: Pantelis-Daniel Arapoglou, Alberto Ginesi, Giorgio Taricco, Dimitrios Christopoulos, Symeon Chatzinotas, Bjorn Ottersten, Miguel Angel Vazquez, Ana Isabel Perez-Neira, Stefano Andrenacci, Alessandro Vanelli Coralli
-
Publication number: 20160380792Abstract: A method for demodulating a received signal relating to a sequence of transmitted symbols that have been modulated by continuous phase modulation includes normalizing samples of a sequence of samples generated from the received signal, to obtain a normalized sequence of samples, wherein an amplitude of each sample of the normalized sequence of samples has an absolute value equal to unity; estimating, on the basis of the normalized sequence of samples, a time offset and a frequency offset of the received signal, and using the estimated time offset and the estimated frequency offset for compensating the normalized sequence of samples for the time and frequency offsets, to obtain a compensated sequence of samples; and determining a sequence of symbols corresponding to the transmitted sequence of symbols on the basis of the compensated sequence of samples.Type: ApplicationFiled: January 22, 2014Publication date: December 29, 2016Inventors: Giulio Colavolpe, Alessandro Ugolini, Tommaso Foggi, Juan Lizarraga, Alberto Ginesi, Stefano Cioni
-
Patent number: 9008233Abstract: An Automatic Identification System—AIS—receiver comprising at least one processing section (PS1, PS2) for synchronizing, demodulating and detecting AIS messages contained in a received signal, said processing steps being carried out separately for a plurality of frequency sub-bands (SB1, SB2, SB3) spanning an AIS channel (CH1, CH2); the receiver being characterized in that: said sub-bands overlap with each others; and said or each processing section is adapted for synchronizing, demodulating and detecting said AIS messages within each sub-band on the basis of timing error and carrier frequency estimations obtained from filtered replicas of said received signal, propagating along respective auxiliary signal paths.Type: GrantFiled: October 19, 2010Date of Patent: April 14, 2015Assignee: Agence Spatiale EuropeenneInventors: Paolo Burzigotti, Alberto Ginesi
-
Publication number: 20120263163Abstract: An Automatic Identification System—AIS—receiver comprising at least one processing section (PS1, PS2) for synchronizing, demodulating and detecting AIS messages contained in a received signal, said processing steps being carried out separately for a plurality of frequency sub-bands (SB1, SB2, SB3) spanning an AIS channel (CH1, CH2); the receiver being characterized in that: said sub-bands overlap with each others; and said or each processing section is adapted for synchronizing, demodulating and detecting said AIS messages within each sub-band on the basis of timing error and carrier frequency estimations obtained from filtered replicas of said received signal, propagating along respective auxiliary signal paths.Type: ApplicationFiled: October 19, 2010Publication date: October 18, 2012Applicant: AGENCE SPATIALE EUROPEENNEInventors: Paolo Burzigotti, Alberto Ginesi
-
Patent number: 7673221Abstract: Apparatus and method for generating parameters used in coding data in a data transmission system. The method determines a number of possible coding parameters to satisfy a target coding gain and selects the best set of parameters that balance the code word length and the error rate. In this manner, a minimum coding gain may be used, which minimizes cross-talk on a transmission link.Type: GrantFiled: October 26, 2001Date of Patent: March 2, 2010Assignee: Ciena CorporationInventors: Bin Li, Alberto Ginesi, Song Zhang
-
Patent number: 7536197Abstract: Methods for reducing power required for transmitting a signal from a first transceiver to a second transceiver are described. The methods comprise the steps of estimating an excess amount of power used by the first transceiver for transmitting the signal, reducing the first transceiver's power use by the excess amount of power to a reduced power level, and transmitting the signal from the first transceiver using the reduced power level. The reduced power level achieves a transmission rate of the signal within a predefined tolerance of its preferable rate.Type: GrantFiled: July 30, 2001Date of Patent: May 19, 2009Assignee: Ciena CorporationInventors: Alberto Ginesi, Francois Tremblay, Scott McClennon
-
Patent number: 7463678Abstract: A circuit and method is provided for reducing the effect of having potentially different sizes for an Inverse Discrete Fourier Transform (IDFT) at a transmitter and a Discrete Fourier Transform (DFT) at a receiver in a telecommunications system without requiring a change in the DFT's size. The method includes following steps. The first step includes determining whether the IDFT size is greater than, equal to, or less than the DFT size. The second step includes selecting a target impulse response length from a predefined set of impulse response lengths in accordance with a result the previous step. The third step includes training an equalizer at the receiver to the target impulse response length. The circuit comprises hardware and software for implementing the method.Type: GrantFiled: March 10, 2003Date of Patent: December 9, 2008Assignee: CIENA CorporationInventors: Alberto Ginesi, Song Zhang, Andrew Deczky, Duncan Baird, Christian Bourget
-
Patent number: 7409024Abstract: A process for providing a phase synchronization of a pilot aided carrier of an input digital signal z(k), the signal z(k) having signal fields of Ls symbol signals, namely a block of LP pilot symbol signals ZP(k) and a data field of (Ls?LP) data symbol signals Zd(k), and characterized for each signal field (l) by: extracting the pilot symbol signals ZP(k) and calculating an unwrapped phase estimate {circumflex over (?)}(lLs) over the pilot block of said signal field (1) and: interpolating said unwrapped phase estimates of successive signal fields (l, +1 . . .Type: GrantFiled: September 1, 2004Date of Patent: August 5, 2008Assignee: Agence Spatiale EuropeenneInventors: Alberto Ginesi, Domenico Fittipaldi, Alan Bigi, Riccardo De Gaudenzi
-
Patent number: 7397869Abstract: Providing a pilot aided phase recovery of a carrier of an input digital signal Zk having signal fields of Ls symbol signals, LP pilot symbol signals ZP(k) and (Ls?LP) data symbol signals Zd(k), by for each signal field: calculating an unwrapped pilot phase estimate {circumflex over (?)}f(P)(l); initiating with {circumflex over (?)}f(P)(l) a first digital phase locked loop implementing a phase estimate algorithm and calculating a forward phase trajectory {circumflex over (?)}F(k) from Zd(k), ks varying between 1 and Ls?LP over the data field (l), {circumflex over (?)}F(P)(l) having Ls?LP forward phase estimates {circumflex over (?)}F(ks); and initiating with {circumflex over (?)}(P)f(l+1) a second digital phase locked loop, implementing a phase estimate algorithm and calculating a backward phase trajectory {circumflex over (?)}B(ks) from Zd(k), ks varying between Ls?LP and 1 over said data field (l), {circumflex over (?)}B(ks) having Ls?LP backward phase estimates {circumflex over (?)}B(ks); and from said pType: GrantFiled: September 1, 2004Date of Patent: July 8, 2008Assignee: Agence Spatiale EuropeenneInventors: Alberto Ginesi, Domenico Fittipaldi, Alan Bigi, Riccardo De Gaudenzi
-
Patent number: 7173978Abstract: In a coding system for asymmetric digital subscriber line (ADSL) communications, a method of encoding a sequence of information bits is provided comprising the steps of dividing the information bits into encoding bits and parallel bits; encoding the encoding bits to produce encoded bits; mapping the encoded bits and the parallel bits into first and second pulse amplitude modulation (PAM) signals; and generating a quadrature amplitude modulation (QAM) signal from these first and second PAM signals. This method overcomes the decoder complexity that would otherwise be required due to the large QAM constellations involved for ADSL communications.Type: GrantFiled: July 23, 2001Date of Patent: February 6, 2007Inventors: Song Zhang, Bin Li, Andrew Deczky, Alberto Ginesi
-
Patent number: 7061974Abstract: Method and apparatus for improving data transmission in a digital subscriber line (DSL) system. The transmitter determines whether a spectrum of an inverse Fourier transform (IFT) is periodic with respect to a clock of a predetermined standard-size IFT and communicates this information to the receiver. Based on this information, the receiver adapts the FT if desired. In effect, the receiver adapts its signal processing algorithms to process the received signal in accordance with the transmitter's IFT size. In this manner, transmission performance is improved.Type: GrantFiled: February 5, 2002Date of Patent: June 13, 2006Assignee: Ciena CorporationInventors: Alberto Ginesi, Andrew Deczky
-
Patent number: 7050825Abstract: Method of reducing transmission power across a loop in a discrete multitone communication system. A first signal to noise ratio (SNR) is estimated for a signal transmitted across the loop. A second SNR is estimated for a signal across the loop, the second SNR signal being estimated exclusive of a predetermined portion of the first SNR. A power cutback scaling factor is determined in accordance with the first SNR, the second SNR, and a predefined maximum SNR degradation amount. The transmission power is scaled in accordance with said scaling factor for reducing said transmission power. In such a manner, fine gains are computed such that the transmit power is reduced without significantly affecting the achieved data rate.Type: GrantFiled: July 24, 2002Date of Patent: May 23, 2006Assignee: Ciena CorporationInventors: Alberto Ginesi, Scott McClennon
-
Patent number: 6981186Abstract: A method for establishing communication in an ADSL subscriber loop, the method comprising the steps of determining that showtime cannot be entered during initialization of communication between the modems; requesting entry into a diagnostic mode by one of the modems upon the determining; diagnosing line conditions as being unable to support communication at a predetermined standard; and establishing communication at a standard lower than the predetermined standard.Type: GrantFiled: July 30, 2002Date of Patent: December 27, 2005Assignee: Ciena CorporationInventors: Alberto Ginesi, Scott McClennon
-
Publication number: 20050123073Abstract: The Invention relates to a process for providing a pilot aided phase recovery of a carrier of an input digital signal, said signal Zk comprising signal fields comprised of Ls symbol signals, namely a block of LP pilot symbol signals ZP(k) and a data field of (Ls?LP) data symbol signals Zd(k), and characterized in that it comprises for each signal field (l) calculating an unwrapped pilot phase estimate {circumflex over (?)}f(P)(l). initiating with {circumflex over (?)}f(P)(l) a first digital phase locked loop (DPLLF) implementing a phase estimate algorithm and calculating a forward phase trajectory {circumflex over (?)}F(k) from the data symbol signals Zd(k) of the data field, ks varying between 1 and Lx?LP over said data field (l), said forward phase trajectory {circumflex over (?)}F(P)(l) being comprised of Ls?LP forward phase estimates {circumflex over (?)}F(ks).Type: ApplicationFiled: September 1, 2004Publication date: June 9, 2005Inventors: Alberto Ginesi, Domenico Fittipaldi, Alan Bigi, Riccardo De Gaudenzi
-
Publication number: 20050111603Abstract: A process for providing a phase synchronization of a pilot aided carrier of an input digital signal z(k), the signal z(k) having signal fields of Ls symbol signals, namely a block of LP pilot symbol signals ZP(k) and a data field of (Ls-LP) data symbol signals Zd(k), and characterized for each signal field (l) by: extracting the pilot symbol signals ZP(k) and calculating an unwrapped phase estimate {circumflex over (?)}(lLs) over the pilot block of said signal field (1) and: interpolating said unwrapped phase estimates of successive signal fields (l, l+1 . . .Type: ApplicationFiled: September 1, 2004Publication date: May 26, 2005Inventors: Alberto Ginesi, Domenico Fittipaldi, Alan Bigi, Riccardo Gaudenzi
-
Patent number: 6693957Abstract: An adaptive DMT modem determines, as part of a startup sequence, subscriber loop conditions. One or more loop condition adaptation operations are then performed to reduce the complexity of the filters employed in the modem, to reduce the power dissipated in the modem, to optimize performance of the modem or to reduce the likelihood of EMI being radiated into the premises of a subscriber.Type: GrantFiled: December 31, 1998Date of Patent: February 17, 2004Assignee: Nortel Networks LimitedInventors: Michael John Wingrove, Alberto Ginesi, Gwendolyn Kate Harris, Robert Scott McClennon