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公开(公告)号：US20190109646A1
公开(公告)日：2019-04-11
申请号：US16204909
申请日：2018-11-29
Applicant: INPHI CORPORATION
Inventor： Oscar Ernesto AGAZZI , Diego Ernesto CRIVELLI , Paul VOOIS , Ramiro Rogelio LOPEZ , Jorge Manuel FINOCHIETTO , Norman L. SWENSON , Mario Rafael HUEDA , Hugo Santiago CARRER , Vadim GUTNIK , Adrián Ulises MORALES , Martin Ignacio DEL BARCO , Martin Carlos ASINARI , Federico Nicolas PAREDES , Alfredo Javier TADDEI , Mauro Marcelo BRUNI , Damian Alfonso MORERO , Facundo Abel Alcides RAMOS , María Laura FERSTER , Elvio Adrian SERRANO , Pablo Gustavo QUIROGA , Roman Antonio ARENAS , Matias German SCHNIDRIG , Alejandro Javier SCHWOYKOSKI
IPC: H04B10/516 , H04B10/40 , H04L7/00 , H04B10/61
Abstract: A coherent receiver comprises an ingress signal path having an ingress line-side interface, and an ingress host-side interface. The ingress signal path is configured to receive an analog signal vector at the ingress line-side interface, to demodulate the analog signal vector, and to output a digital data signal Fat the ingress host-side interface. The coherent receiver also comprises clock and timing circuitry configured to receive a single reference clock signal and to provide a plurality of modified ingress path clock signals to different components of the ingress signal path, the plurality of modified ingress path clock signals derived from the single reference clock signal and the plurality of modified ingress path clock signals having different clock rates. The receiver, transmitter, or transceiver can operate in a plurality of programmable operating modes to accommodate different modulation/de-modulation schemes, error correction code schemes, framing/mapping protocols, or other programmable features.
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公开(公告)号：US20180351585A1
公开(公告)日：2018-12-06
申请号：US16041642
申请日：2018-07-20
Applicant: INPHI CORPORATION
Inventor： Damian Alfonso MORERO , Mario Alejandro CASTRILLON , Matias German SCHNIDRIG , Mario Rafael HUEDA
CPC classification number: H03M13/616 , H03M13/112 , H03M13/1137 , H03M13/116 , H03M13/6577
Abstract: A decoder performs forward error correction based on quasi-cyclic regular column-partition low density parity check codes. A method for designing the parity check matrix reduces the number of short-cycles of the matrix to increase performance. An adaptive quantization post-processing technique further improves performance by eliminating error floors associated with the decoding. A parallel decoder architecture performs iterative decoding using a parallel pipelined architecture.
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3.发明申请公开(公告)号：US20190115984A1
公开(公告)日：2019-04-18
申请号：US16212461
申请日：2018-12-06
Applicant: INPHI CORPORATION
Inventor： Mario Rafael HUEDA , Mauro Marcelo BRUNI , Federico Nicolas PAREDES , Hugo Santiago CARRER , Diego Ernesto CRIVELLI , Oscar Ernesto AGAZZI , Norman L. SWENSON , Seyedmohammadreza MOTAGHIANNEZAM
CPC classification number: H04B10/6162 , H04B10/616 , H04B10/6165 , H04L7/0075 , H04L7/0079
Abstract: A timing recovery system generates a sampling clock to synchronize sampling of a receiver to a symbol rate of an incoming signal. The input signal is received over an optical communication channel. The receiver generates a timing matrix representing coefficients of a timing tone detected in the input signal. The timing tone representing frequency and phase of a symbol clock of the input signal and has a non-zero timing tone energy. The receiver computes a rotation control signal based on the timing matrix that represents an amount of accumulated phase shift in the input signal relative to the sampling clock. A numerically controlled oscillator is controlled to adjust at least one of the phase and frequency of the sampling clock based on the rotation control signal.
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公开(公告)号：US20190036614A1
公开(公告)日：2019-01-31
申请号：US16151094
申请日：2018-10-03
Applicant: INPHI CORPORATION
Inventor： Damián Alfonso MORERO , Mario Rafael HUEDA , Oscar Ernesto AGAZZI
IPC: H04B10/61 , H04L1/00 , H04B10/079
Abstract: A method and structure for signal propagation in a coherent optical receiver device. Asynchronous equalization helps to reduce complexity and power dissipation, and also improves the robustness of timing recovery. However, conventional devices using inverse interpolation filters ignore adaptation algorithms. The present invention provides for forward propagation and backward propagation. In the forward case, the filter input signal is forward propagated through a filter to the adaptation engine, while, in the backward case, the error signal is backward propagated through a filter to the asynchronous domain. Using such forward and backward propagation schemes reduces implementation complexity while providing optical device performance.
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5.发明申请公开(公告)号：US20180115369A1
公开(公告)日：2018-04-26
申请号：US15839698
申请日：2017-12-12
Applicant: INPHI CORPORATION
Inventor： Mario Rafael HUEDA , Mauro Marcelo BRUNI , Federico Nicolas PAREDES , Hugo Santiago CARRER , Diego Ernesto CRIVELLI , Oscar Ernesto AGAZZI , Norman L. SWENSON , Seyedmohammadreza MOTAGHIANNEZAM
CPC classification number: H04B10/6162 , H04B10/616 , H04B10/6165 , H04L7/0075 , H04L7/0079
Abstract: A timing recovery system generates a sampling clock to synchronize sampling of a receiver to a symbol rate of an incoming signal. The input signal is received over an optical communication channel. The receiver generates a timing matrix representing coefficients of a timing tone detected in the input signal. The timing tone representing frequency and phase of a symbol clock of the input signal and has a non-zero timing tone energy. The receiver computes a rotation control signal based on the timing matrix that represents an amount of accumulated phase shift in the input signal relative to the sampling clock. A numerically controlled oscillator is controlled to adjust at least one of the phase and frequency of the sampling clock based on the rotation control signal.
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Patent Agency Ranking
公开(公告)号：US20180026726A1
公开(公告)日：2018-01-25
申请号：US15714990
申请日：2017-09-25
Applicant: INPHI CORPORATION
CPC classification number: H04B10/6165 , H04B10/616 , H04L1/0045 , H04L1/0054 , H04L7/033
Abstract: A receiver architecture and method recovers data received over an optical fiber channel in the presence of cycle slips. In a first cycle slip recovery architecture, a receiver detects and corrects cycle slips based on pilot symbols inserted in the transmitted data. In a second cycle slip recovery architecture, a coarse cycle slip detection is performed based on pilot symbols and a cycle slip position estimation is then performed based on carrier phase noise. The receiver compensates for cycle slips based on the position estimation.
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公开(公告)号：US20200321985A1
公开(公告)日：2020-10-08
申请号：US16904381
申请日：2020-06-17
Applicant: INPHI CORPORATION
Inventor： Damian Alfonso MORERO , Mario Alejandro CASTRILLON , Matias German SCHNIDRIG , Mario Rafael HUEDA
Abstract: A decoder performs forward error correction based on quasi-cyclic regular column-partition low density parity check codes. A method for designing the parity check matrix reduces the number of short-cycles of the matrix to increase performance. An adaptive quantization post-processing technique further improves performance by eliminating error floors associated with the decoding. A parallel decoder architecture performs iterative decoding using a parallel pipelined architecture.
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8.发明申请公开(公告)号：US20180323871A1
公开(公告)日：2018-11-08
申请号：US16024105
申请日：2018-06-29
Applicant: INPHI CORPORATION
Inventor： Shu Hao FAN , Damian Alfonso MORERO , Mario Rafael HUEDA
IPC: H04B10/079 , H04L25/03 , H04B10/40 , H04B10/50 , H04B10/61
CPC classification number: H04B10/07955 , H04B7/005 , H04B7/0413 , H04B10/40 , H04B10/5053 , H04B10/5161 , H04B10/532 , H04B10/61 , H04B10/616 , H04L25/03 , H04L25/14
Abstract: Apparatus and method for transmitter alignment in an optical communication system are provided. In certain configurations, a method of correcting for transmitter skew is provided. The method includes generating an optical signal using a transmitter based on an in-phase (I) component and a quadrature-phase (Q) component of a transmit signal, the optical signal having a baud rate that is based on a timing tone. The method further includes receiving the optical signal as an input to a receiver, and generating a signal vector representing the optical signal using the receiver. The signal vector includes an I component and a Q component. The method further includes calculating a power of the timing tone based on processing the signal vector using a tone power calculator of the receiver, and correcting for a skew of the transmitter based on the calculated power.
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公开(公告)号：US20180041287A1
公开(公告)日：2018-02-08
申请号：US15786108
申请日：2017-10-17
Applicant: INPHI CORPORATION
Inventor： Oscar Ernesto AGAZZI , Diego Ernesto CRIVELLI , Hugo Santiago CARRER , Mario Rafael HUEDA , Martin Ignacio DEL BARCO , Pablo GIANNI , Ariel POLA , Elvio Adrian SERRANO , Alfredo Javier TADDEI , Mario Alejandro CASTRILLON , Martin SERRA , Ramiro MATTEODA
CPC classification number: H04B10/6161 , H04B10/616 , H04L7/0075 , H04L27/01
Abstract: A receiver for fiber optic communications.
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10.发明申请公开(公告)号：US20200295842A1
公开(公告)日：2020-09-17
申请号：US16892146
申请日：2020-06-03
Applicant: INPHI CORPORATION
Inventor： Mario Rafael HUEDA , José L. CORREA LUST , Damian Alfonso MORERO
Abstract: A method and structure for compensation techniques in coherent optical receivers. The present invention provides a coherent optical receiver with an improved 8x8 adaptive MIMO (Multiple Input, Multiple Output) equalizer configured within a digital signal processor (DSP) to compensate the effects of transmitter I/Q skew in subcarrier multiplexing (SCM) schemes. The 8×8 MIMO equalizer can be configured such that each of the 8 outputs is electrically coupled to 3 of 8 inputs, wherein each of the input-output couplings is configured as a filter. The method includes compensating for impairments to the digital conversion of an optical input signal via the 8x8 MIMO equalizer following other signal processing steps, such as chromatic dispersion (CD)/polarization-mode dispersion (PMD) compensation, carrier recovery, timing synchronization, and cycle slip correction.
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