NO972987L - Fremgangsmåte og innretning for demodulasjon av et flernivåsignal - Google Patents

Fremgangsmåte og innretning for demodulasjon av et flernivåsignal

Info

Publication number
NO972987L
NO972987L NO972987A NO972987A NO972987L NO 972987 L NO972987 L NO 972987L NO 972987 A NO972987 A NO 972987A NO 972987 A NO972987 A NO 972987A NO 972987 L NO972987 L NO 972987L
Authority
NO
Norway
Prior art keywords
digital signal
demodulation
signal
level signal
converter
Prior art date
Application number
NO972987A
Other languages
English (en)
Other versions
NO972987D0 (no
Inventor
Satoshi Sato
Takeshi Imamura
Original Assignee
Casio Computer Co Ltd
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 Casio Computer Co Ltd filed Critical Casio Computer Co Ltd
Publication of NO972987D0 publication Critical patent/NO972987D0/no
Publication of NO972987L publication Critical patent/NO972987L/no

Links

Classifications

    • 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
    • H04L25/06—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection
    • H04L25/061—Dc level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing hard decisions only; arrangements for tracking or suppressing unwanted low frequency components, e.g. removal of dc offset
    • H04L25/062—Setting decision thresholds using feedforward techniques only

Abstract

En innretning for demodulasjon av et flernivåsignal omfatter en A/D-omformer (12) for omforming av et analogt inn- gangssignal hvis amplitude er modulert ved hjelp av flere nivåer, til et digi- talt signal, et lager (18) for lagring av det digitale signal, en terskel- generator for beregning av flere ters- kelnivåer i overensstemmelse med det digitale signal som er lagret i lageret, og en demodulator (13) for demodulasjon av det digitale signal som er oppnådd ved hjelp av A/D-omformeren (12) i over- ensstemmelse med de mange terskelnivåer til et signal ifølge et nivå av det digitale signal.
NO972987A 1995-10-30 1997-06-26 Fremgangsmåte og innretning for demodulasjon av et flernivåsignal NO972987L (no)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP30499295 1995-10-30
PCT/JP1996/003160 WO1997016908A1 (en) 1995-10-30 1996-10-29 Apparatus and method for demodulating multi-level signal

Publications (2)

Publication Number Publication Date
NO972987D0 NO972987D0 (no) 1997-06-26
NO972987L true NO972987L (no) 1997-08-29

Family

ID=17939778

Family Applications (1)

Application Number Title Priority Date Filing Date
NO972987A NO972987L (no) 1995-10-30 1997-06-26 Fremgangsmåte og innretning for demodulasjon av et flernivåsignal

Country Status (9)

Country Link
US (1) US5825243A (no)
EP (1) EP0800736A1 (no)
KR (1) KR100258136B1 (no)
CN (1) CN1166252A (no)
AU (1) AU696736B2 (no)
EA (1) EA000985B1 (no)
NO (1) NO972987L (no)
PL (1) PL181062B1 (no)
WO (1) WO1997016908A1 (no)

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US6198779B1 (en) * 1999-05-05 2001-03-06 Motorola Method and apparatus for adaptively classifying a multi-level signal
DE10007752A1 (de) * 2000-02-19 2001-08-23 Braun Gmbh Verfahren zur Anpassung eines Entscheidungspegels bei der Umwandlung eines analogen Signals in ein digitales Signal und digitaler Empfänger
US7042965B2 (en) * 2000-10-05 2006-05-09 Matsushita Electric Industrial Co., Ltd. Judgment level setting method and data receiver
GB0100202D0 (en) * 2001-01-04 2001-02-14 Koninkl Philips Electronics Nv Receiver having a variable threshold slicer stage and a method of updating the threshold levels of the slicer stage
US7200184B2 (en) * 2002-05-30 2007-04-03 Motorola, Inc. Data dithering apparatus and method
JP4161883B2 (ja) * 2003-11-19 2008-10-08 沖電気工業株式会社 Ｆｓｋ信号検波器
KR101096634B1 (ko) * 2003-12-24 2011-12-30 에스티 에릭슨 에스에이 적응적 슬라이서 임계값 생성 방법 및 시스템
FR2883434B1 (fr) * 2005-03-21 2007-04-20 Commissariat Energie Atomique Methode et dispositif de demodulation a deux niveaux.
FR2883433B1 (fr) * 2005-03-21 2007-04-20 Commissariat Energie Atomique Methode et dispositif de demodulation multiniveaux.
US8645793B2 (en) 2008-06-03 2014-02-04 Marvell International Ltd. Statistical tracking for flash memory
US8725929B1 (en) 2006-11-06 2014-05-13 Marvell World Trade Ltd. Adaptive read and write systems and methods for memory cells
US7941590B2 (en) * 2006-11-06 2011-05-10 Marvell World Trade Ltd. Adaptive read and write systems and methods for memory cells
US8190961B1 (en) 2006-11-28 2012-05-29 Marvell International Ltd. System and method for using pilot signals in non-volatile memory devices
US7808834B1 (en) 2007-04-13 2010-10-05 Marvell International Ltd. Incremental memory refresh
US8031526B1 (en) 2007-08-23 2011-10-04 Marvell International Ltd. Write pre-compensation for nonvolatile memory
US8189381B1 (en) 2007-08-28 2012-05-29 Marvell International Ltd. System and method for reading flash memory cells
US8085605B2 (en) 2007-08-29 2011-12-27 Marvell World Trade Ltd. Sequence detection for flash memory with inter-cell interference
CN107534628B (zh) * 2015-10-14 2020-06-02 华为技术有限公司 一种获取pam4的解码阈值的电路、方法和光网络单元
CN108880691B (zh) * 2017-05-11 2020-07-31 上海诺基亚贝尔股份有限公司 用于解调信号的方法、设备及计算机可读介质

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI89437C (fi) * 1991-11-01 1993-09-27 Nokia Mobile Phones Ltd Digitaldetektor foer ett soekaranlaeggningsystem
WO1993024909A1 (en) * 1992-05-29 1993-12-09 Motorola, Inc. Data communication receiver having variable length message carry-on
US5425056A (en) * 1993-03-23 1995-06-13 Motorola, Inc. Method and apparatus for generating threshold levels in a radio communication device for receiving four-level signals
US5566213A (en) * 1995-03-09 1996-10-15 Motorola, Inc. Selective call receiving device with improved symbol decoding and automatic frequency control

Also Published As

Publication number Publication date
US5825243A (en) 1998-10-20
MX9704757A (es) 1997-10-31
AU696736B2 (en) 1998-09-17
WO1997016908A1 (en) 1997-05-09
CN1166252A (zh) 1997-11-26
PL322024A1 (en) 1998-01-05
AU7337996A (en) 1997-05-22
EA000985B1 (ru) 2000-08-28
EA199700088A1 (ru) 1997-12-30
EP0800736A1 (en) 1997-10-15
NO972987D0 (no) 1997-06-26
KR100258136B1 (ko) 2000-06-01
PL181062B1 (pl) 2001-05-31

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