TR200102153T2 - Çarpma için tarama tablolarını kullanan MLSE - Google Patents

Çarpma için tarama tablolarını kullanan MLSE

Info

Publication number
TR200102153T2
TR200102153T2 TR2001/02153T TR200102153T TR200102153T2 TR 200102153 T2 TR200102153 T2 TR 200102153T2 TR 2001/02153 T TR2001/02153 T TR 2001/02153T TR 200102153 T TR200102153 T TR 200102153T TR 200102153 T2 TR200102153 T2 TR 200102153T2
Authority
TR
Turkey
Prior art keywords
metric value
branch metric
value calculation
multiplication
signals modulated
Prior art date
Application number
TR2001/02153T
Other languages
English (en)
Inventor
Chennakeshu Sandeep
Zangi Kambiz
E. Bottomley Gregory
Original Assignee
Ericsson Inc.
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 Ericsson Inc. filed Critical Ericsson Inc.
Publication of TR200102153T2 publication Critical patent/TR200102153T2/tr

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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03184—Details concerning the metric
    • H04L25/03197—Details concerning the metric methods of calculation involving metrics
    • 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03299—Arrangements for operating in conjunction with other apparatus with noise-whitening circuitry

Abstract

Bu bulus, sembol arasi girisimle distorsiyonun mevcudiyetinde, M-ary modülasyonu ile modüle edilmis radyo sinyallerinin demodülasyonuna iliskindir. Bulus, M-ary modülasyonu ile modüle edilmis sinyaller için bir maksimum-ihtimali-dizi-kestirim (MLSE) ekulayzerinin gerçeklestirilmesi için ihtiyaç duyulan çarpma sayisinin düsürülmesi için bir yöntem sunmaktadir. Bu bulusun örnek teskil eden düzenlemelerinde, çarpmalarin sayisi, dal metrik degerinin saptanmasi için ihityaç duyulan bazi degerlerin ön-hesaplanmasi ve bu ön-hesaplanmis degerlerin bir çarpim tablosunda depolanmasiyla düsürülmektedir. Ister bir Öklidci dal metrik deger hesaplamasi olsun ister bir Ungerboeck dal metrik deger hesaplamasi olsun, bir dal metrik deger hesaplamasi yapilacak oldugunda, belirli çarpma islemlerinin yerini basit tablo tarama islemleri almaktadir. Bir sonuç olarak, sistemin güç verimi ve hizi artmaktadir. M-ary modülasyonu ile modüle edilen sinyalleri demodüle eden herhangi bir alici bu bulus DEVAMI VAR.
TR2001/02153T 1999-01-26 1999-12-29 Çarpma için tarama tablolarını kullanan MLSE TR200102153T2 (tr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/237,356 US7099410B1 (en) 1999-01-26 1999-01-26 Reduced complexity MLSE equalizer for M-ary modulated signals

Publications (1)

Publication Number Publication Date
TR200102153T2 true TR200102153T2 (tr) 2001-12-21

Family

ID=22893386

Family Applications (1)

Application Number Title Priority Date Filing Date
TR2001/02153T TR200102153T2 (tr) 1999-01-26 1999-12-29 Çarpma için tarama tablolarını kullanan MLSE

Country Status (8)

Country Link
US (1) US7099410B1 (tr)
EP (1) EP1147641A1 (tr)
JP (1) JP2003518340A (tr)
CN (1) CN1145330C (tr)
AR (1) AR025511A1 (tr)
AU (1) AU2596000A (tr)
TR (1) TR200102153T2 (tr)
WO (1) WO2000044141A1 (tr)

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* Cited by examiner, † Cited by third party
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US6278726B1 (en) 1999-09-10 2001-08-21 Interdigital Technology Corporation Interference cancellation in a spread spectrum communication system
US6115406A (en) 1999-09-10 2000-09-05 Interdigital Technology Corporation Transmission using an antenna array in a CDMA communication system
EP1442570B1 (de) * 2001-11-09 2005-05-04 Infineon Technologies AG Viterbi-entzerrung unter verwendung eines tabellenspeichers zur bereithaltung von rekonstruierten signalwerten für die berechnung von übergangsmetriken
WO2003075528A1 (en) * 2002-03-07 2003-09-12 Telefonaktiebolaget L M Ericsson (Publ) Soft value calculation for multilevel signals
GB2392066B (en) * 2002-08-16 2005-11-09 Toshiba Res Europ Ltd Equaliser apparatus and methods
US7627029B2 (en) 2003-05-20 2009-12-01 Rambus Inc. Margin test methods and circuits
US7590175B2 (en) * 2003-05-20 2009-09-15 Rambus Inc. DFE margin test methods and circuits that decouple sample and feedback timing
US7292650B2 (en) * 2003-07-01 2007-11-06 Silicon Integrated Systems Corp. OFDM receiver and metric generator thereof
GB0420183D0 (en) 2004-09-10 2004-10-13 Ttp Communications Ltd Metric calculation utilising pre-stored values
CN101213762B (zh) * 2005-06-10 2013-02-06 艾利森电话股份有限公司 无线通信接收器中的减损相关估算的方法和装置
US20070127608A1 (en) * 2005-12-06 2007-06-07 Jacob Scheim Blind interference mitigation in a digital receiver
CN1819690B (zh) * 2006-03-31 2011-03-23 北京邮电大学 一种应用于fdd/ofdm系统的下行干扰抑制方法
CN101296350B (zh) * 2007-04-25 2011-07-27 普诚科技股份有限公司 解交错器的编译码方法
GB2535426B (en) * 2014-10-31 2021-08-11 Advanced Risc Mach Ltd Apparatus, method and program for calculating the result of a repeating iterative sum
CN104503711B (zh) * 2014-11-17 2017-10-20 杭州先临三维科技股份有限公司 一种3d打印的自适应分层方法
CN115242584B (zh) * 2022-07-21 2023-12-01 苏州大学 一种优化基于查找表的mlse算法复杂度的方法和装置

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2215567B (en) 1988-03-05 1992-11-18 Plessey Co Plc Improvements in or relating to equalisers
JP2960436B2 (ja) 1989-06-26 1999-10-06 株式会社日立製作所 非線形データ伝送システム用受信器
JP3258067B2 (ja) 1992-03-25 2002-02-18 株式会社東芝 最尤系列推定方式
JP3560991B2 (ja) * 1993-09-20 2004-09-02 株式会社東芝 適応型最尤系列推定装置
US5488635A (en) * 1993-10-29 1996-01-30 General Electric Company Low complexity adaptive equalizer radio receiver employing reduced complexity branch metric calculation
US5499272A (en) 1994-05-31 1996-03-12 Ericsson Ge Mobile Communications Inc. Diversity receiver for signals with multipath time dispersion
US5680419A (en) 1994-08-02 1997-10-21 Ericsson Inc. Method of and apparatus for interference rejection combining in multi-antenna digital cellular communications systems
US5481572A (en) 1994-08-02 1996-01-02 Ericsson Inc. Method of and apparatus for reducing the complexitiy of a diversity combining and sequence estimation receiver
US5949796A (en) * 1996-06-19 1999-09-07 Kumar; Derek D. In-band on-channel digital broadcasting method and system
US6108517A (en) * 1997-07-28 2000-08-22 Ericsson Inc. Methods and apparatus for joint demodulation of adjacent channel signals in digital communications systems

Also Published As

Publication number Publication date
WO2000044141A1 (en) 2000-07-27
JP2003518340A (ja) 2003-06-03
US7099410B1 (en) 2006-08-29
EP1147641A1 (en) 2001-10-24
AR025511A1 (es) 2002-12-04
AU2596000A (en) 2000-08-07
CN1145330C (zh) 2004-04-07
CN1339215A (zh) 2002-03-06

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