ZA200404175B - Method and apparatus for determining the log-likelihood ratio with precoding. - Google Patents

Method and apparatus for determining the log-likelihood ratio with precoding. Download PDF

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Publication number
ZA200404175B
ZA200404175B ZA200404175A ZA200404175A ZA200404175B ZA 200404175 B ZA200404175 B ZA 200404175B ZA 200404175 A ZA200404175 A ZA 200404175A ZA 200404175 A ZA200404175 A ZA 200404175A ZA 200404175 B ZA200404175 B ZA 200404175B
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ZA
South Africa
Prior art keywords
signal
set forth
constellation
bit
value
Prior art date
Application number
ZA200404175A
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English (en)
Inventor
Alok Gupta
Original Assignee
Qualcomm 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.)
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Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of ZA200404175B publication Critical patent/ZA200404175B/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0064—Concatenated codes
    • H04L1/0066—Parallel concatenated codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • 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
    • H04L25/03343—Arrangements at the transmitter end
    • 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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/38—Synchronous or start-stop systems, e.g. for Baudot code
    • H04L25/40—Transmitting circuits; Receiving circuits
    • H04L25/49—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems
    • H04L25/497—Transmitting circuits; Receiving circuits using code conversion at the transmitter; using predistortion; using insertion of idle bits for obtaining a desired frequency spectrum; using three or more amplitude levels ; Baseband coding techniques specific to data transmission systems by correlative coding, e.g. partial response coding or echo modulation coding transmitters and receivers for partial response systems
    • H04L25/4975—Correlative coding using Tomlinson precoding, Harashima precoding, Trellis precoding or GPRS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/06—Demodulator circuits; Receiver circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—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
    • H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
    • H04L25/03006—Arrangements for removing intersymbol interference
    • H04L2025/0335—Arrangements for removing intersymbol interference characterised by the type of transmission
    • H04L2025/03375—Passband transmission
    • H04L2025/03414—Multicarrier
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2647—Arrangements specific to the receiver only
ZA200404175A 2001-11-29 2004-05-27 Method and apparatus for determining the log-likelihood ratio with precoding. ZA200404175B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US33436301P 2001-11-29 2001-11-29

Publications (1)

Publication Number Publication Date
ZA200404175B true ZA200404175B (en) 2005-08-11

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Family Applications (1)

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ZA200404175A ZA200404175B (en) 2001-11-29 2004-05-27 Method and apparatus for determining the log-likelihood ratio with precoding.

Country Status (16)

Country Link
US (1) US7218689B2 (ru)
EP (1) EP1461924A4 (ru)
JP (1) JP4116562B2 (ru)
KR (1) KR100911424B1 (ru)
CN (1) CN100583860C (ru)
AR (1) AR039071A1 (ru)
AU (1) AU2002346605B2 (ru)
BR (1) BR0214528A (ru)
CA (1) CA2468574A1 (ru)
IL (2) IL162191A0 (ru)
MX (1) MXPA04005171A (ru)
MY (1) MY137160A (ru)
RU (1) RU2304352C2 (ru)
TW (1) TWI292272B (ru)
WO (1) WO2003047118A2 (ru)
ZA (1) ZA200404175B (ru)

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Also Published As

Publication number Publication date
RU2004119550A (ru) 2005-11-10
KR20040061005A (ko) 2004-07-06
AU2002346605B2 (en) 2008-09-11
IL162191A0 (en) 2005-11-20
EP1461924A2 (en) 2004-09-29
AR039071A1 (es) 2005-02-09
CN100583860C (zh) 2010-01-20
US7218689B2 (en) 2007-05-15
MXPA04005171A (es) 2004-08-11
MY137160A (en) 2009-01-30
BR0214528A (pt) 2004-12-28
AU2002346605A1 (en) 2003-06-10
JP4116562B2 (ja) 2008-07-09
CA2468574A1 (en) 2003-06-05
WO2003047118A3 (en) 2003-11-27
US20030112901A1 (en) 2003-06-19
WO2003047118A2 (en) 2003-06-05
RU2304352C2 (ru) 2007-08-10
CN1615622A (zh) 2005-05-11
TW200304309A (en) 2003-09-16
TWI292272B (en) 2008-01-01
KR100911424B1 (ko) 2009-08-11
IL162191A (en) 2010-11-30
EP1461924A4 (en) 2010-07-07
JP2005510939A (ja) 2005-04-21

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