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

Similar Documents

Publication Publication Date Title
US10469099B2 (en) Apparatus and method for multilevel coding (MLC) with binary alphabet polar codes
US10594523B2 (en) Decoder circuit for a broadband pulse amplitude modulation signal
KR100266122B1 (ko) 소프트판정방법및이소프트판정방법을채용하는수신기
CN104737510B (zh) Qam调制通信系统的多级差分解码装置和方法
US7113550B2 (en) Technique for improving the quality of digital signals in a multi-level signaling system
ATE370566T1 (de) Dekodierungssystem und verfahren für digitale kommunikation
ATE270795T1 (de) Turbo produktkode decodierer
AU2001264653A1 (en) Baseband processors and methods and systems for decoding a received signal having a transmitter or channel induced coupling between bits
WO2003047118A3 (en) Method and apparatus for determining the log-likelihood ratio with precoding
US6690738B1 (en) Trellis coded modulation system employing a flexible trellis coded modulation decoder
US7457368B2 (en) Multilevel channel coding in ADSL
US8213552B2 (en) Demodulation method
DE60211847D1 (de) Berechnung von weichen Entscheidungswerten für Mehrstufensignale
KR101509728B1 (ko) 심볼 매핑 방법 및 장치
WO2006122291A3 (en) Using soft bit decisions to improve dpsk demodulation of sps data
US5928377A (en) Method and apparatus for data transmission through manipulation of encoding formats
JP2001053816A (ja) 対称差分位相偏移キーイング（ｓｄｐｓｋ）変調フォーマットに対するマルチチップ・データ検出器
US20090190695A1 (en) Decoding device and method, receiving device and method, and program
US20070171102A1 (en) Sequentially decoded low density parity coding (ldpc) forward error correction (fec) in orthogonal frequency division modulation (ofdm) systems
KR20230141188A (ko) 두 개의 편이된 직교 진폭 변조 성상을 이용한 통신 방법 및 장치
KR100510635B1 (ko) 통신시스템에서의 부분 중첩 양자화 진폭 변복조장치
EP1028533A1 (de) Dekodierung eines digitalen Eingangssignals
CN121643780A (zh) 一种高可靠8b/6t编码方法及其联合rs码的混合纠错纠删方法
JP2001244825A (ja) 復号器
US8537917B2 (en) Apparatus and method for mapping symbol

Legal Events

Date Code Title Description
RER Ceased as to paragraph 5 lit. 3 law introducing patent treaties