WO2002071616A3 - Methods and systems for dsp-based receivers - Google Patents

Methods and systems for dsp-based receivers Download PDF

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Publication number
WO2002071616A3
WO2002071616A3 PCT/US2002/006019 US0206019W WO02071616A3 WO 2002071616 A3 WO2002071616 A3 WO 2002071616A3 US 0206019 W US0206019 W US 0206019W WO 02071616 A3 WO02071616 A3 WO 02071616A3
Authority
WO
WIPO (PCT)
Prior art keywords
path
separate
equalization
parallel
dsp
Prior art date
Application number
PCT/US2002/006019
Other languages
French (fr)
Other versions
WO2002071616A2 (en
Inventor
Oscar Agazzi
Venugopal Gopinathan
Original Assignee
Broadcom Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Broadcom Corp filed Critical Broadcom Corp
Priority to DE60208890T priority Critical patent/DE60208890T2/en
Priority to EP02725024A priority patent/EP1374407B1/en
Publication of WO2002071616A2 publication Critical patent/WO2002071616A2/en
Publication of WO2002071616A3 publication Critical patent/WO2002071616A3/en

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver
    • H04B10/697—Arrangements for reducing noise and distortion
    • H04B10/6971—Arrangements for reducing noise and distortion using equalisation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0617—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence
    • H03M1/0624—Continuously compensating for, or preventing, undesired influence of physical parameters characterised by the use of methods or means not specific to a particular type of detrimental influence by synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver
    • H04B10/693—Arrangements for optimizing the preamplifier in the receiver
    • H04B10/6933—Offset control of the differential preamplifier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/60—Receivers
    • H04B10/66—Non-coherent receivers, e.g. using direct detection
    • H04B10/69—Electrical arrangements in the receiver
    • H04B10/697—Arrangements for reducing noise and distortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03012—Arrangements for removing intersymbol interference operating in the time domain
    • H04L25/03019—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception
    • H04L25/03057—Arrangements for removing intersymbol interference operating in the time domain adaptive, i.e. capable of adjustment during data reception with a recursive structure
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03159—Arrangements for removing intersymbol interference operating in the frequency domain
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
    • H03M1/0604—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic
    • H03M1/0604—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic at one point, i.e. by adjusting a single reference value, e.g. bias or gain error
    • H03M1/0607—Offset or drift compensation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/08—Continuously compensating for, or preventing, undesired influence of physical parameters of noise
    • H03M1/0836—Continuously compensating for, or preventing, undesired influence of physical parameters of noise of phase error, e.g. jitter
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/12—Analogue/digital converters
    • H03M1/1205—Multiplexed conversion systems
    • H03M1/121—Interleaved, i.e. using multiple converters or converter parts for one channel
    • H03M1/1215—Interleaved, i.e. using multiple converters or converter parts for one channel using time-division multiplexing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/03433—Arrangements for removing intersymbol interference characterised by equaliser structure
    • H04L2025/03439—Fixed structures
    • H04L2025/03445—Time domain
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L7/00—Arrangements for synchronising receiver with transmitter
    • H04L7/0054—Detection of the synchronisation error by features other than the received signal transition
    • H04L7/0062—Detection of the synchronisation error by features other than the received signal transition detection of error based on data decision error, e.g. Mueller type detection

Abstract

Digital signal processing based methods and systems for receiving data signals include parallel receivers, multi-channel receivers, timing recovery schemes, and, without limitation, equalization schemes. The present invention is implemented as a multi-path parallel receiver in which an analog-to-digital converter ('ADC') and/or a digital signal processor ('DSP') are implemented with parallel paths that operate at lower rates than the received data signal. In an embodiment, a parallel DSP-based receiver in accordance with the invention includes a separate timing recovery loop for each ADC path. The separate timing recovery loops can be used to compensate for timing phase errors in the clock generation circuit that are different for each path. In an embodiment, a parallel DSP-based receiver includes a separate automatic gain control (AGC) loop for each ADC path. The separate AGC loops can be used to compensate for gain errors on a path-by-path basis. In an embodiment, a parallel DSP-based receiver includes a separate offset compensation loop for each ADC path. The separate offset compensation loops can be used to independently compensate for offsets that are different for each path. In an embodiment the present invention is implemented as a multi-channel receiver that receives a plurality of data signals. In an embodiment, one or more of the following types of equalization are performed, alone and/or in various combinations with one another: Viterbi equalization; feed-forward equalization ('FFE'); and/or decision feed-back equalization ('DFE').
PCT/US2002/006019 2001-03-01 2002-03-01 Methods and systems for dsp-based receivers WO2002071616A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE60208890T DE60208890T2 (en) 2001-03-01 2002-03-01 METHOD AND SYSTEMS FOR DIGITAL SIGNAL PROCESSING BASED RECEIVERS
EP02725024A EP1374407B1 (en) 2001-03-01 2002-03-01 Methods and systems for dsp-based receivers

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US27321501P 2001-03-01 2001-03-01
US60/273,215 2001-03-01
US09/909,896 US7564866B2 (en) 2000-07-21 2001-07-23 Methods and systems for digitally processing optical data signals
US09/909,896 2001-07-23

Publications (2)

Publication Number Publication Date
WO2002071616A2 WO2002071616A2 (en) 2002-09-12
WO2002071616A3 true WO2002071616A3 (en) 2003-10-16

Family

ID=26956013

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2002/006019 WO2002071616A2 (en) 2001-03-01 2002-03-01 Methods and systems for dsp-based receivers

Country Status (4)

Country Link
US (2) US7564866B2 (en)
EP (1) EP1374407B1 (en)
DE (1) DE60208890T2 (en)
WO (1) WO2002071616A2 (en)

Families Citing this family (116)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2001257348A1 (en) * 2000-04-28 2001-11-12 Broadcom Corporation Methods and systems for adaptive receiver equalization
US7245638B2 (en) * 2000-07-21 2007-07-17 Broadcom Corporation Methods and systems for DSP-based receivers
US7564866B2 (en) 2000-07-21 2009-07-21 Broadcom Corporation Methods and systems for digitally processing optical data signals
WO2003083623A2 (en) * 2002-03-28 2003-10-09 Celion Networks, Inc. Apparatus and method for aggregation and transportation for plesiosynchronous framing oriented data formats
US7505687B2 (en) 2002-03-29 2009-03-17 Pivotal Decisions Llc Distributed terminal optical transmission system
US7164692B2 (en) 2002-04-08 2007-01-16 Jeffrey Lloyd Cox Apparatus and method for transmitting 10 Gigabit Ethernet LAN signals over a transport system
US6965738B2 (en) * 2002-04-16 2005-11-15 Eiselt Michael H Chromatic dispersion compensation system and method
US7725042B2 (en) * 2002-04-22 2010-05-25 Marvin Ray Young Automated optical transport system
US6847678B2 (en) * 2002-04-25 2005-01-25 Raytheon Company Adaptive air interface waveform
US8494372B2 (en) 2002-04-30 2013-07-23 Pivotal Decisions Llc Apparatus and method for optimizing optical and electrical filtering of optical signals
US7460296B2 (en) * 2002-04-30 2008-12-02 Pivotal Decisions Llc Compensation for spectral power tilt from scattering
US7711271B2 (en) * 2002-04-30 2010-05-04 Eiselt Michael H Wave division multiplexed optical transport system utilizing optical circulators to isolate an optical service channel
US7206516B2 (en) * 2002-04-30 2007-04-17 Pivotal Decisions Llc Apparatus and method for measuring the dispersion of a fiber span
AU2003231190A1 (en) * 2002-04-30 2003-11-17 Celion Networks, Inc. Optical transport system architecture for remote terminal connectivity
US7457538B2 (en) * 2002-05-15 2008-11-25 Nortel Networks Limited Digital performance monitoring for an optical communications system
US7460745B2 (en) * 2002-06-04 2008-12-02 Pivotal Decisions Llc Configurable dispersion compensation trimmer
US7603042B2 (en) * 2002-06-04 2009-10-13 Eiselt Michael H Apparatus and method for optimum decision threshold setting
US20040042067A1 (en) * 2002-06-04 2004-03-04 Eiselt Michael H. Apparatus and method for duplex optical transport using a co-directional optical amplifier
US7729617B2 (en) * 2002-06-04 2010-06-01 Samir Satish Sheth Flexible, dense line card architecture
US7924496B2 (en) * 2002-06-04 2011-04-12 Pivotal Decisions Llc Apparatus and method for Raman gain control
US6920277B2 (en) 2002-06-04 2005-07-19 Marvin R. Young Optical bypass method and architecture
US20050226630A1 (en) * 2003-06-03 2005-10-13 Celion Networks Inc. Optical bypass method and architecture
US7440164B2 (en) * 2002-06-04 2008-10-21 Pivotal Decisions Llc Apparatus and method for Raman gain spectral control
US7110485B2 (en) * 2002-09-26 2006-09-19 Stmicroelectronics, Inc. System and method for clock synchronization of multi-channel baud-rate timing recovery systems
ATE315853T1 (en) * 2002-11-15 2006-02-15 Cit Alcatel DIGITAL SIGNAL PROCESSING RECEIVER AND METHOD OF OPERATING SAME
US7460793B2 (en) * 2002-12-11 2008-12-02 Michael George Taylor Coherent optical detection and signal processing method and system
US7421207B2 (en) * 2002-12-13 2008-09-02 Pivotal Decisions Llc Single fiber duplex optical transport
US7656905B2 (en) 2002-12-24 2010-02-02 Samir Sheth Apparatus and method for aggregation and transportation of gigabit ethernet and other packet based data formats
US7782778B2 (en) * 2002-12-24 2010-08-24 Samir Satish Sheth Apparatus and method for fibre channel distance extension embedded within an optical transport system
JP3686898B2 (en) * 2003-01-09 2005-08-24 独立行政法人理化学研究所 Fluorescence energy transfer analyzer
US6898347B2 (en) * 2003-05-30 2005-05-24 Intel Corporation Monitoring power in optical networks
US9337948B2 (en) * 2003-06-10 2016-05-10 Alexander I. Soto System and method for performing high-speed communications over fiber optical networks
US7206363B2 (en) 2003-06-24 2007-04-17 Intersymbol Communications, Inc. Method and apparatus for delayed recursion decoder
US7173552B1 (en) * 2003-10-01 2007-02-06 Analog Devices, Inc. High accuracy segmented DAC
EP1553742B1 (en) * 2004-01-09 2007-12-26 Alcatel Lucent Receiver for optical signals comprising a Viterbi equalizer and an analog electronic equalizer
US7522901B2 (en) * 2004-01-20 2009-04-21 Broadcom Corporation Direct digital conversion tuner and method for using same
US20060007969A1 (en) * 2004-03-31 2006-01-12 Barnett Brandon C Short pulse optical interconnect
US7623797B2 (en) * 2004-07-14 2009-11-24 Fundacion Tarpuy Compensating impairments of optical channel using adaptive equalization
WO2006058459A1 (en) * 2004-12-01 2006-06-08 Zte Corporation Adaptive optical receiving device and the method thereof
ES2258924B1 (en) * 2005-02-21 2007-11-16 Universitat Politecnica De Catalunya RECEIVER FOR OPTICAL COMMUNICATIONS WITH NON-LINEAR EQUALIZER.
US7627252B2 (en) * 2005-02-28 2009-12-01 Nortel Networks Limited Clock recovery from an optical signal with dispersion impairments
US7576676B2 (en) * 2006-02-02 2009-08-18 Clariphy Communications, Inc. Analog-to-digital converter using lookahead pipelined architecture and open-loop residue amplifiers
US8831074B2 (en) 2005-10-03 2014-09-09 Clariphy Communications, Inc. High-speed receiver architecture
US7852913B2 (en) * 2005-10-03 2010-12-14 Clariphy Communications, Inc. High-speed receiver architecture
US8483343B2 (en) * 2005-10-03 2013-07-09 Clariphy Communications, Inc. High-speed receiver architecture
US8139630B2 (en) * 2005-10-03 2012-03-20 Clariphy Communications, Inc. High-speed receiver architecture
US7778320B2 (en) * 2005-10-03 2010-08-17 Clariphy Communications, Inc. Multi-channel equalization to compensate for impairments introduced by interleaved devices
US7555227B2 (en) * 2005-10-21 2009-06-30 Nortel Networks Limited Polarization compensation in a coherent optical receiver
US7522841B2 (en) * 2005-10-21 2009-04-21 Nortel Networks Limited Efficient data transmission and training of data processing functions
US7606498B1 (en) 2005-10-21 2009-10-20 Nortel Networks Limited Carrier recovery in a coherent optical receiver
US8094056B2 (en) * 2006-02-02 2012-01-10 Clariphy Communications, Inc. Analog-to-digital converter
US7623796B2 (en) * 2006-02-27 2009-11-24 Alcatel-Lucent Usa Inc. Data-aided multi-symbol phase estimation for optical differential multilevel phase-shift keying signals
US20080069198A1 (en) * 2006-08-25 2008-03-20 Broadcom Corporation Sequence decision feedback equalizer
US7525470B2 (en) 2006-08-25 2009-04-28 Broadcom Corporation Phase control for interleaved analog-to-digital conversion for electronic dispersion compensation
US7560986B2 (en) 2006-08-25 2009-07-14 Broadcom Corporation Variable gain amplifier and method for achieving variable gain amplification with high bandwidth and linearity
US7525462B2 (en) 2006-08-25 2009-04-28 Broadcom Corporation Gain control for interleaved analog-to-digital conversion for electronic dispersion compensation
US20080049825A1 (en) * 2006-08-25 2008-02-28 Broadcom Corporation Equalizer with reorder
US7830987B2 (en) 2006-08-25 2010-11-09 Broadcom Corporation Electronic dispersion compensation utilizing interleaved architecture and channel identification for assisting timing recovery
US7961781B2 (en) 2006-08-25 2011-06-14 Broadcom Corporation Electronic dispersion compensation utilizing interleaved architecture and channel identification for assisting timing recovery
US8300685B2 (en) 2006-08-25 2012-10-30 Broadcom Corporation Non-linear decision feedback equalizer
WO2008095996A1 (en) * 2007-02-09 2008-08-14 Texas Instruments Limited Digital filter
JP4994315B2 (en) * 2007-06-15 2012-08-08 マーベル インターナショナル リミテッド Analog signal processing system, parallel analog / digital converter system, and mismatch elimination method
US7808407B2 (en) 2007-06-15 2010-10-05 Solarflare Communications, Inc. Sub-channel distortion mitigation in parallel digital systems
US7831416B2 (en) * 2007-07-17 2010-11-09 Caterpillar Inc Probabilistic modeling system for product design
JP5034770B2 (en) * 2007-08-16 2012-09-26 富士通株式会社 Coherent optical receiver and optical communication system
GB0717840D0 (en) 2007-09-13 2007-10-24 Nxp Bv A signal sampling circuit
US7808417B2 (en) * 2007-09-14 2010-10-05 Clariphy Communications, Inc. Analog-to-digital converter
WO2009047852A1 (en) * 2007-10-11 2009-04-16 Fujitsu Limited Reception circuit, reception method and signal transmission system
US8243866B2 (en) * 2008-03-05 2012-08-14 Oracle America, Inc. Analog baud rate clock and data recovery
US8102938B2 (en) * 2008-04-22 2012-01-24 Finisar Corporation Tuning system and method using a simulated bit error rate for use in an electronic dispersion compensator
DE602008003566D1 (en) * 2008-07-16 2010-12-30 Alcatel Lucent Adaptive nonlinearity compensation in a coherent receiver
US7979558B2 (en) * 2008-08-06 2011-07-12 Futurewei Technologies, Inc. Remote session control
US8358729B2 (en) * 2008-08-22 2013-01-22 Finisar Corporation Baseband phase-locked loop
US8891601B2 (en) * 2008-09-02 2014-11-18 Realtek Semiconductor Corp. Apparatus and method for start-up in communication system
CN101577530B (en) * 2009-06-05 2012-09-05 中兴通讯股份有限公司 Multi-passage power control circuit and method thereof
JP5407595B2 (en) * 2009-06-30 2014-02-05 富士通株式会社 Signal processing circuit, optical receiver, detector, and waveform distortion compensation method
EP2381595B1 (en) * 2010-04-21 2012-06-20 Alcatel Lucent Phase skew compensation at a coherent optical receiver
US9178642B2 (en) * 2010-10-27 2015-11-03 Hewlett-Packard Development Company, L.P. Receivers and transceivers for optical multibus systems
JP5582039B2 (en) * 2011-01-07 2014-09-03 富士通株式会社 Optical transmission device and analog-digital conversion device
JP5720425B2 (en) * 2011-05-31 2015-05-20 富士通株式会社 Digital coherent receiver and phase control method
US8942334B1 (en) 2011-07-13 2015-01-27 Pmc-Sierra, Inc. Parallel replica CDR to correct offset and gain in a baud rate sampling phase detector
US8693596B1 (en) 2011-07-20 2014-04-08 Pmc-Sierra, Inc. Gain calibration for a Mueller-Muller type timing error detector
US8879616B2 (en) * 2011-10-31 2014-11-04 Hewlett-Packard Development Company, L.P. Receiver with decision feedback equalizer
US8558597B2 (en) 2012-02-10 2013-10-15 International Business Machines Corporation High-resolution phase interpolators
US8737549B2 (en) 2012-04-30 2014-05-27 Lsi Corporation Receiver having limiter-enhanced data eye openings
US9042721B2 (en) * 2012-07-25 2015-05-26 Alcatel Lucent Stochastic reflectometer
US9112608B2 (en) * 2012-10-08 2015-08-18 Futurewei Technologies, Inc. Resource-efficient digital chromatic dispersion compensation in fiber optical communication using spectral shaping subcarrier modulation
US8837570B2 (en) * 2012-11-27 2014-09-16 Lsi Corporation Receiver with parallel decision feedback equalizers
DE102012113008A1 (en) * 2012-12-21 2014-06-26 Hamilton Bonaduz Ag Apparatus and method for measuring a periodic signal
US9385858B2 (en) * 2013-02-20 2016-07-05 Avago Technologies General Ip (Singapore) Pte. Ltd. Timing phase estimation for clock and data recovery
US20150085914A1 (en) * 2013-09-25 2015-03-26 Avago Technologies General Ip (Singapore) Pte. Ltd. Modal PAM2/4 Pipelined Programmable Receiver Having Feed Forward Equalizer (FFE) And Decision Feedback Equalizer (DFE) Optimized For Forward Error Correction (FEC) Bit Error Rate (BER) Performance
WO2015116738A1 (en) * 2014-01-28 2015-08-06 SA Photonics, Inc. Data retransmission for atmospheric free space optical communication system
US9419719B2 (en) * 2014-03-19 2016-08-16 Huawei Technologies Co., Ltd. Transmitter apparatus and method
CN108352895B (en) 2015-08-21 2020-03-24 Sa光子学公司 Free Space Optical (FSO) system
WO2017035095A1 (en) 2015-08-21 2017-03-02 SA Photonics, Inc. Free space optical (fso) system
DE102015217435A1 (en) * 2015-09-11 2017-03-16 Robert Bosch Gmbh Integrated circuit
JP6541528B2 (en) * 2015-09-17 2019-07-10 富士通コンポーネント株式会社 Optical receiving module and method of manufacturing optical receiving module
US9973274B1 (en) 2015-10-07 2018-05-15 SA Photonics, Inc. Fast tracking free space optical module
US10148465B2 (en) * 2015-12-08 2018-12-04 Zte Corporation Training assisted joint equalization
US10148363B2 (en) 2015-12-08 2018-12-04 Zte Corporation Iterative nonlinear compensation
US10075257B2 (en) * 2016-01-11 2018-09-11 Nokia Of America Corporation Optical spatial division multiplexing usable at short reach
US9762379B2 (en) * 2016-02-08 2017-09-12 Alcatel-Lucent Usa Inc. Clock recovery for an optical receiver
US9742597B1 (en) * 2016-03-29 2017-08-22 Xilinx, Inc. Decision feedback equalizer
US20180062747A1 (en) * 2016-08-26 2018-03-01 Macom Technology Solutions Holdings, Inc. Optical Communication Module
US10305603B2 (en) * 2017-03-31 2019-05-28 Nokia Of America Corporation Optical communication with some compensation of nonlinear distortions
EP3703279A1 (en) * 2019-03-01 2020-09-02 Xieon Networks S.à r.l. Compensation of signal distortion induced by a periodic optical copropagating optical signal
US11476947B2 (en) * 2019-05-24 2022-10-18 Google Llc Low power coherent receiver for short-reach optical communication
TWI724544B (en) * 2019-09-12 2021-04-11 創意電子股份有限公司 Communication receiving device and clock data recovery method
US11575437B2 (en) 2020-01-10 2023-02-07 Macom Technology Solutions Holdings, Inc. Optimal equalization partitioning
CN115191090A (en) 2020-01-10 2022-10-14 Macom技术解决方案控股公司 Optimal equalization partitioning
US11502756B2 (en) * 2020-06-23 2022-11-15 Infinera Corporation Data synchronization in optical networks and devices
KR20220022398A (en) * 2020-08-18 2022-02-25 삼성전자주식회사 Receiver circuit performing adaptive equalization and system including the same
US11177986B1 (en) * 2020-11-24 2021-11-16 Texas Instruments Incorporated Lane adaptation in high-speed serial links
CN112636842B (en) * 2020-12-29 2022-03-25 武汉邮电科学研究院有限公司 Low-power-consumption DSP device and working method thereof
US11616529B2 (en) 2021-02-12 2023-03-28 Macom Technology Solutions Holdings, Inc. Adaptive cable equalizer
US11909439B2 (en) 2021-04-23 2024-02-20 SA Photonics, Inc. Wavefront sensor with inner detector and outer detector

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006697A2 (en) * 1998-12-02 2000-06-07 Lucent Technologies Inc. Parellel signal processing for equalisation on fibre channels
WO2001054317A2 (en) * 2000-01-17 2001-07-26 Broadcom Corporation Trellis-coding and pre-equalisation for optical channels
WO2001065788A2 (en) * 2000-02-28 2001-09-07 Broadcom Corporation System and method for high speed communications using digital signal processing

Family Cites Families (43)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126342A (en) * 1983-01-10 1984-07-20 Nec Corp Digital sound signal transmitting system
US5115450A (en) * 1989-07-06 1992-05-19 Advanced Micro Devices, Inc. High speed digital to analog to digital communication system
DE69020568D1 (en) 1990-10-30 1995-08-03 Ibm Self-training adaptive equalization method and device.
US5132633A (en) 1991-05-21 1992-07-21 National Semiconductor Corporation PLL using a multi-phase frequency correction circuit in place of a VCO
US5396224A (en) * 1991-11-22 1995-03-07 Hewlett-Packard Company Telemetered patient location system and method
US5485490A (en) * 1992-05-28 1996-01-16 Rambus, Inc. Method and circuitry for clock synchronization
US5550546A (en) * 1993-11-19 1996-08-27 Trw Inc. Advanced parameter encoder with dual integrated pulse present detection and channel/sector arbitration
KR100393317B1 (en) * 1994-02-15 2003-10-23 람버스 인코포레이티드 Delayed synchronization loop
US5554945A (en) * 1994-02-15 1996-09-10 Rambus, Inc. Voltage controlled phase shifter with unlimited range
US5757857A (en) * 1994-07-21 1998-05-26 The Regents Of The University Of California High speed self-adjusting clock recovery circuit with frequency detection
US5768268A (en) * 1995-07-19 1998-06-16 Watkins Johnson Company Wideband base station architecture for digital cellular communications system
US5650954A (en) * 1996-01-30 1997-07-22 Seagate Technology, Inc. Frequency and time domain adaptive filtration in a sampled communication channel
US5703905A (en) * 1996-02-16 1997-12-30 Globespan Technologies, Inc. Multi-channel timing recovery system
US5881108A (en) * 1996-02-22 1999-03-09 Globespan Technologies, Inc. Adaptive pre-equalizer for use in data communications equipment
EP0795982B1 (en) * 1996-03-11 2005-01-12 Micronas GmbH Transmission system with quadrature modulation
US6819514B1 (en) 1996-04-30 2004-11-16 Cirrus Logic, Inc. Adaptive equalization and interpolated timing recovery in a sampled amplitude read channel for magnetic recording
US5822143A (en) * 1996-06-11 1998-10-13 Western Digital Corporation Decision feedback equalization implementation of partial-response signaling in a magnetic recording channel
US5949820A (en) * 1996-08-01 1999-09-07 Nec Electronics Inc. Method for optimizing an equalization and receive filter
US6005445A (en) * 1996-12-29 1999-12-21 Sony Corporation Phase adjustment circuit including a ring oscillator in a phase locked loop
US5996415A (en) * 1997-04-30 1999-12-07 Sensys Instruments Corporation Apparatus and method for characterizing semiconductor wafers during processing
US5966415A (en) * 1997-06-13 1999-10-12 Cirrus Logic, Inc. Adaptive equalization in a sub-sampled read channel for a disk storage system
US5852477A (en) * 1997-06-25 1998-12-22 Samsung Electronics Co., Ltd. Digital TV receivers with poly-phase analog-to-digital conversion of baseband symbol coding
US5945862A (en) * 1997-07-31 1999-08-31 Rambus Incorporated Circuitry for the delay adjustment of a clock signal
US6904110B2 (en) * 1997-07-31 2005-06-07 Francois Trans Channel equalization system and method
US6404525B1 (en) * 1997-07-31 2002-06-11 Nec Corporation Optical add-drop multiplexer
US6122336A (en) * 1997-09-11 2000-09-19 Lsi Logic Corporation Digital clock recovery circuit with phase interpolation
GB9721384D0 (en) 1997-10-08 1997-12-10 Phoenix Vlsi Consultants Phase locked loop
US6002279A (en) * 1997-10-24 1999-12-14 G2 Networks, Inc. Clock recovery circuit
US6038269A (en) * 1997-11-20 2000-03-14 National Semiconductor Corporation Detection for digital communication receivers
US6009534A (en) * 1998-06-01 1999-12-28 Texas Instruments Incorporated Fractional phase interpolation of ring oscillator for high resolution pre-compensation
JP3510794B2 (en) * 1998-07-21 2004-03-29 シャープ株式会社 Signal processing device and communication device
US6134268A (en) * 1998-10-19 2000-10-17 Motorola, Inc. Apparatus for performing a non-integer sampling rate change in a multichannel polyphase filter
US6842458B1 (en) * 1999-03-11 2005-01-11 Texas Instruments Incorporated PCM modems using communication lines with multiple digital-to-analog converters
US6498694B1 (en) * 1999-06-15 2002-12-24 Voyan Technology Servo error integration in read-channel equalization
EP1222787B1 (en) 1999-10-20 2009-08-26 Broadcom Corporation Apparatus for high-speed transmission on fiber optic channel
US6621862B1 (en) * 2000-01-04 2003-09-16 Alcatel Internetworking (Pe), Inc. Equalization for multichannel receiving node
US6329859B1 (en) * 2000-03-23 2001-12-11 Bitblitz Communications, Inc. N-way circular phase interpolator for generating a signal having arbitrary phase
EP1139619A1 (en) 2000-03-31 2001-10-04 Lucent Technologies Inc. Channel estimation using a probability mapping table
AU2001257348A1 (en) 2000-04-28 2001-11-12 Broadcom Corporation Methods and systems for adaptive receiver equalization
US6359486B1 (en) * 2000-05-22 2002-03-19 Lsi Logic Corporation Modified phase interpolator and method to use same in high-speed, low power applications
US7564866B2 (en) 2000-07-21 2009-07-21 Broadcom Corporation Methods and systems for digitally processing optical data signals
AU2001277069A1 (en) 2000-07-21 2002-02-18 Broadcom Corporation Methods and systems for digitally processing optical data signals
US7245638B2 (en) 2000-07-21 2007-07-17 Broadcom Corporation Methods and systems for DSP-based receivers

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1006697A2 (en) * 1998-12-02 2000-06-07 Lucent Technologies Inc. Parellel signal processing for equalisation on fibre channels
WO2001054317A2 (en) * 2000-01-17 2001-07-26 Broadcom Corporation Trellis-coding and pre-equalisation for optical channels
WO2001065788A2 (en) * 2000-02-28 2001-09-07 Broadcom Corporation System and method for high speed communications using digital signal processing

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US20020012152A1 (en) 2002-01-31
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US7835387B2 (en) 2010-11-16
US7564866B2 (en) 2009-07-21

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