Forghieri
Fabrizio Forghieri, Monza (mi) IT
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20100239259 | OFDM Transponder Interface With Variable Bit Transfer Rate in Optical Communications Systems - OFDM (Orthogonal Frequency Division Multiplexing) has been proposed for processing signals over WDM channels in an optical network. The number of OFDM sub-carrier channels utilized in transmitting optical signals from a transmitting node to a remote is adapted to the quality of transmission in a WDM channel. Responsive to control signals from the remote node, the number of used sub-carrier channels is set to optimize optical performance of the WDM channel. | 09-23-2010 |
Fabrizio Forghieri, Monza IT
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20090097014 | Measurement of Optical Fiber Length and Determination of Chromatic Dispersion Over the Optical Fiber - In one embodiment, first optical signal can be generated at a first end of an optical fiber segment at a first time. The first optical signal can be detected at a second end of the optical fiber segment at a second time. A second optical signal can be generated at a second end of the optical fiber segment at a third time in response to the detection of the first optical signal. The second optical signal can be detected at the first end of the optical fiber segment at a fourth time. A length of the optical fiber segment can be determined based on a difference between the second time and the first time, a difference between the third time and the second time, and a difference between the fourth time and the third time. | 04-16-2009 |
Fabrizio Forghieri, Modena IT
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20080259968 | DIFFERENTIAL QUADRATURE PHASE-SHIFT KEYING TRANSMISSION SYSTEM WITH VARIABLE TRANSMISSION RATE - Methods and apparatus for varying the transmission rate of a signal transmitted within a dense wavelength division multiplexing (DWDM) system or network are disclosed. According to one aspect of the present invention, a method includes obtaining a first signal and determining a transmission rate associated with the first. If it is determined that the transmission rate is a first rate, the method includes processing the first signal as having a first transmission format and the first rate. Alternatively, it is determined that the transmission rate is not the first rate and is a second rate, the method includes processing the first signal as having a second transmission format and a second rate. | 10-23-2008 |
20090003837 | END-TO-END CHROMATIC DISPERSION CHARACTERIZATION OF OPTICALLY AMPLIFIED LINK - An economic way of determining the chromatic dispersion along a link of a DWDM network is provided. A transmitter modulates the output signals of two lasers operating at two different wavelengths and the modulated output signals are sent into the link. Detectors at each one of a plurality of detection sites along the link determine a phase difference in modulation between the output signals of the two lasers. The chromatic dispersion for each detection site can be calculated from the modulation frequency and determined phase differences at that site. | 01-01-2009 |
Fabrizio Forghieri, Monza (mb) IT
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20150256268 | Adaptive Equalization in Coherent Receivers Using a Stokes Space Update Algorithm - A coherent optical receiver including an optical transducer, an adaptive filter, and a processor updates the adaptive filter according to a metric derived in Stokes space. The optical transducer receives an optical signal corresponding to a modulated signal of symbols. The optical transducer also determines a first signal corresponding to a first polarization of the optical signal and a second signal corresponding to a second polarization of the optical signal. The adaptive filter recovers a first equalized signal and a second equalized signal from the first signal and the second signal. The first equalized signal and the second equalized signal form an equalized modulated signal of symbols. The processor calculates a set of Stokes parameters from the equalized modulated signal and updates the adaptive filter based on a metric derived from the set of Stokes parameters. | 09-10-2015 |
Franco Forghieri, Emmering DE
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20130222525 | SYSTEM AND METHOD FOR REMOTELY LOCATING AN OBJECT IN REAL TIME VIA A NETWORK - A method for remotely locating an object in real time via a network comprises sending a request from a user to a server describing an object to be geographically located remotely via the network, identifying a possible geographic area in which the object is expected to be geographically located, determining a messenger having a geographical location within a predetermined distance of the possible geographic area from a table comprising messengers having known geographical locations, the identity and geographical location of the user being unknown to the messenger, sending an assignment including the possible geographical area from the server to the messenger enabling the messenger to proceed to the possible geographic area to provide a real-time video image is sent from the messenger to the user to enable the user to visually determine whether the object is geographically located within the field of view. | 08-29-2013 |
Luigi Forghieri, Gent BE
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20150173300 | Agricultural Square Baler - An agricultural square baler comprising a baling chamber, for compressing crop by a plunger, and a plunger drive connected to the plunger provided to drive the plunger. At least one connecting rod longitudinally delimited by a first and a second end is provided to transfer the rotational movement of the plunger drive into the linear reciprocal movement of the plunger. Each of the ends of the connecting rod having a first surface. An attachment connects a constraining element with the connecting rod at an attachment location away from the first surface of the connecting rod. | 06-25-2015 |