ATE328430T1 - Berechnung von weichen entscheidungswerten für mehrstufensignale - Google Patents

Berechnung von weichen entscheidungswerten für mehrstufensignale

Info

Publication number
ATE328430T1
ATE328430T1 AT02388019T AT02388019T ATE328430T1 AT E328430 T1 ATE328430 T1 AT E328430T1 AT 02388019 T AT02388019 T AT 02388019T AT 02388019 T AT02388019 T AT 02388019T AT E328430 T1 ATE328430 T1 AT E328430T1
Authority
AT
Austria
Prior art keywords
closest
calculation
delta
symbols
values
Prior art date
Application number
AT02388019T
Other languages
English (en)
Inventor
Leif Wilhelmsson
Peter Malm
Original Assignee
Ericsson Telefon Ab L M
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 Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Application granted granted Critical
Publication of ATE328430T1 publication Critical patent/ATE328430T1/de

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/32—Carrier systems characterised by combinations of two or more of the types covered by groups H04L27/02, H04L27/10, H04L27/18 or H04L27/26
    • H04L27/34—Amplitude- and phase-modulated carrier systems, e.g. quadrature-amplitude modulated carrier systems
    • H04L27/38—Demodulator circuits; Receiver circuits
    • 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
    • H04L25/067—DC level restoring means; Bias distortion correction ; Decision circuits providing symbol by symbol detection providing soft decisions, i.e. decisions together with an estimate of reliability
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/711—Interference-related aspects the interference being multi-path interference
    • H04B1/7115—Constructive combining of multi-path signals, i.e. RAKE receivers
    • H04B1/712—Weighting of fingers for combining, e.g. amplitude control or phase rotation using an inner loop

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Error Detection And Correction (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Complex Calculations (AREA)
AT02388019T 2002-03-07 2002-03-07 Berechnung von weichen entscheidungswerten für mehrstufensignale ATE328430T1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP02388019A EP1343285B1 (de) 2002-03-07 2002-03-07 Berechnung von weichen Entscheidungswerten für Mehrstufensignale

Publications (1)

Publication Number Publication Date
ATE328430T1 true ATE328430T1 (de) 2006-06-15

Family

ID=27741260

Family Applications (1)

Application Number Title Priority Date Filing Date
AT02388019T ATE328430T1 (de) 2002-03-07 2002-03-07 Berechnung von weichen entscheidungswerten für mehrstufensignale

Country Status (3)

Country Link
EP (1) EP1343285B1 (de)
AT (1) ATE328430T1 (de)
DE (1) DE60211847T2 (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7376195B2 (en) 2004-01-23 2008-05-20 Telefonaktiebolaget L M Ericsson (Publ) Digital communication systems having decreased memory
FI20055127A0 (fi) * 2005-03-22 2005-03-22 Nokia Corp Data ilmaisu kommunikointijärjestelmässä
EP1876786A1 (de) * 2006-07-03 2008-01-09 Koninklijke Philips Electronics N.V. Blinde Amplitudenschätzung für empfangene Symbole
DE102006038963A1 (de) 2006-08-21 2008-03-13 Micronas Gmbh Verfahren bzw. Schaltungsanordnung zum Entscheiden eines Symbols beim Empfang eines mit einem Quadratur-Signalpaar gekoppelten Signals
US8923412B2 (en) 2012-12-13 2014-12-30 Blackberry Limited Wireless electronic device with a decoder and associated methods
EP2744161A1 (de) * 2012-12-13 2014-06-18 BlackBerry Limited Drahtlose elektronische Vorrichtung mit Decodierer und zugehörige Verfahren

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5657354A (en) * 1995-05-15 1997-08-12 Thesling, Iii; William H. Planar approximating method for computing the log-likelihood ratio optimal signal metric of each component code decoder in 8-PSK block coded modulation systems
DE19912825C1 (de) * 1999-03-22 2000-08-10 Siemens Ag Verfahren, Empfangseinrichtung und Funkstation zum Detektieren eines Datensymbols

Also Published As

Publication number Publication date
DE60211847T2 (de) 2007-06-06
EP1343285B1 (de) 2006-05-31
DE60211847D1 (de) 2006-07-06
EP1343285A1 (de) 2003-09-10

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