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BR9709696B1 - processo e aparelho para gerar um sinal modulado. - Google Patents

processo e aparelho para gerar um sinal modulado.

Info

Publication number
BR9709696B1
BR9709696B1 BRPI9709696-2A BR9709696A BR9709696B1 BR 9709696 B1 BR9709696 B1 BR 9709696B1 BR 9709696 A BR9709696 A BR 9709696A BR 9709696 B1 BR9709696 B1 BR 9709696B1
Authority
BR
Brazil
Prior art keywords
generating
modulated signal
modulated
signal
Prior art date
Application number
BRPI9709696-2A
Other languages
English (en)
Other versions
BR9709696A (pt
Inventor
Paul W Dent
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 filed Critical
Publication of BR9709696A publication Critical patent/BR9709696A/pt
Publication of BR9709696B1 publication Critical patent/BR9709696B1/pt

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
    • 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
    • H04L25/03178—Arrangements involving sequence estimation techniques
    • H04L25/03248—Arrangements for operating in conjunction with other apparatus
    • H04L25/03292—Arrangements for operating in conjunction with other apparatus with channel estimation circuitry
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0008—Modulated-carrier systems arrangements for allowing a transmitter or receiver to use more than one type of modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/18—Phase-modulated carrier systems, i.e. using phase-shift keying
    • H04L27/20—Modulator circuits; Transmitter circuits
    • H04L27/2003—Modulator circuits; Transmitter circuits for continuous phase modulation
    • H04L27/2007—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained
    • H04L27/2017—Modulator circuits; Transmitter circuits for continuous phase modulation in which the phase change within each symbol period is constrained in which the phase changes are non-linear, e.g. generalized and Gaussian minimum shift keying, tamed frequency modulation
    • 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
    • H04L27/3488—Multiresolution systems
    • 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
    • H04L27/36—Modulator circuits; Transmitter circuits
    • H04L27/362—Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated
    • 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
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Artificial Intelligence (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Amplifiers (AREA)
  • Transmitters (AREA)
BRPI9709696-2A 1996-06-12 1997-05-19 processo e aparelho para gerar um sinal modulado. BR9709696B1 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/662,940 US5815531A (en) 1996-06-12 1996-06-12 Transmitter for encoded data bits
PCT/US1997/008318 WO1997048219A2 (en) 1996-06-12 1997-05-19 Transmitter for qam encoded data

Publications (2)

Publication Number Publication Date
BR9709696A BR9709696A (pt) 1999-08-10
BR9709696B1 true BR9709696B1 (pt) 2010-08-10

Family

ID=24659851

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI9709696-2A BR9709696B1 (pt) 1996-06-12 1997-05-19 processo e aparelho para gerar um sinal modulado.

Country Status (13)

Country Link
US (1) US5815531A (pt)
EP (1) EP0904650B1 (pt)
JP (1) JP3887022B2 (pt)
CN (1) CN1183730C (pt)
AU (1) AU739232B2 (pt)
BR (1) BR9709696B1 (pt)
CA (1) CA2257930C (pt)
DE (1) DE69738130T2 (pt)
MY (1) MY132622A (pt)
SA (1) SA97180141B1 (pt)
SG (1) SG143061A1 (pt)
TW (1) TW329582B (pt)
WO (1) WO1997048219A2 (pt)

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Also Published As

Publication number Publication date
AU739232B2 (en) 2001-10-04
DE69738130D1 (de) 2007-10-25
EP0904650A2 (en) 1999-03-31
SG143061A1 (en) 2008-06-27
JP2000512457A (ja) 2000-09-19
EP0904650B1 (en) 2007-09-12
WO1997048219A3 (en) 1998-02-05
TW329582B (en) 1998-04-11
CA2257930C (en) 2006-05-09
US5815531A (en) 1998-09-29
CA2257930A1 (en) 1997-12-18
BR9709696A (pt) 1999-08-10
WO1997048219A2 (en) 1997-12-18
DE69738130T2 (de) 2008-06-12
AU3069297A (en) 1998-01-07
JP3887022B2 (ja) 2007-02-28
CN1222277A (zh) 1999-07-07
CN1183730C (zh) 2005-01-05
SA97180141B1 (ar) 2006-07-30
MY132622A (en) 2007-10-31

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