ES2115957T3 - Receptor para una señal de espectro disperso de secuencia directa codificada ortogonalmente que emplea el principio del rastrillo. - Google Patents

Receptor para una señal de espectro disperso de secuencia directa codificada ortogonalmente que emplea el principio del rastrillo.

Info

Publication number
ES2115957T3
ES2115957T3 ES94921281T ES94921281T ES2115957T3 ES 2115957 T3 ES2115957 T3 ES 2115957T3 ES 94921281 T ES94921281 T ES 94921281T ES 94921281 T ES94921281 T ES 94921281T ES 2115957 T3 ES2115957 T3 ES 2115957T3
Authority
ES
Spain
Prior art keywords
ortogonally
digit
binary
maximum
rake
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES94921281T
Other languages
English (en)
Inventor
Audrey Viterbi
Andrew Viterbi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
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.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Application granted granted Critical
Publication of ES2115957T3 publication Critical patent/ES2115957T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • 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
    • 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

Landscapes

  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Engineering & Computer Science (AREA)
  • Error Detection And Correction (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Relay Systems (AREA)
  • Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
  • Cable Transmission Systems, Equalization Of Radio And Reduction Of Echo (AREA)
  • Manufacture Of Porous Articles, And Recovery And Treatment Of Waste Products (AREA)
  • Polyurethanes Or Polyureas (AREA)
  • Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
  • Radio Transmission System (AREA)
  • Structure Of Receivers (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Ultra Sonic Daignosis Equipment (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)

Abstract

UN METODO Y APARATO PARA DECODIFICAR UNA SEÑAL DE DATOS ORTOGONALMENTE CODIFICADOS EN UN SISTEMA RECEPTOR NO COHERENTE. SE REFIERE AL METODO COMO UNA GENERACION METRICA DUAL-MAXIMA. CONSTA DE PASOS DE UNA BUSQUEDA SECUENCIAL DE UN NIVEL DE ENERGIA MAXIMO EN CADA UNO DE LOS SUBGRUPOS DE UN GRUPO DADO DE INDICES DE SIMBOLO Y NIVELES DE ENERGIA ASOCIADOS, Y EL CALCULO DE UNA DIFERENCIA DE DOS VALORES PARA FORMAR UN VALOR DE SALIDA DE DECISION BLANDA. LOS DOS SUBGRUPOS SE IDENTIFICAN POR EL VALOR BINARIO, (BIEN "0" O "1") DE UN DIGITO DADO DEL EQUIVALENTE BINARIO DEL INDICE DE SIMBOLO. EL VALOR DE SALIDA DE DECISION BLANDA REFLEJA UNA MEDIDA DE CONFIANZA DEL VALOR DEL DIGITO CORRESPONDIENTE DE LA SEÑAL ORIGINAL. LAS SECUENCIAS DE GENERADO DUAL-MAXIMA (204) A TRAVES DE LOS PASOS, UNA VEZ PARA CADA DIGITO BINARIO DE LA SEÑAL ORIGINAL. EL METODO PERMITE QUE LA ENERGIA CORRELACIONADA DE MULTIPLES RECEPTORES SE COMBINE ANTES DE LA DECODIFICACION DE SEÑALES, REDUCIENDO ASI MAS AUN LA COMPLEJIDAD DELCIRCUITO Y MEJORANDO LA ACTUACION DEL DECODIFICADOR.
ES94921281T 1993-06-24 1994-06-22 Receptor para una señal de espectro disperso de secuencia directa codificada ortogonalmente que emplea el principio del rastrillo. Expired - Lifetime ES2115957T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/083,110 US5442627A (en) 1993-06-24 1993-06-24 Noncoherent receiver employing a dual-maxima metric generation process

Publications (1)

Publication Number Publication Date
ES2115957T3 true ES2115957T3 (es) 1998-07-01

Family

ID=22176240

Family Applications (1)

Application Number Title Priority Date Filing Date
ES94921281T Expired - Lifetime ES2115957T3 (es) 1993-06-24 1994-06-22 Receptor para una señal de espectro disperso de secuencia directa codificada ortogonalmente que emplea el principio del rastrillo.

Country Status (19)

Country Link
US (1) US5442627A (es)
EP (1) EP0705510B1 (es)
JP (1) JP2788122B2 (es)
KR (1) KR100203469B1 (es)
CN (2) CN1050952C (es)
AT (1) ATE165200T1 (es)
BR (1) BR9406851A (es)
CA (1) CA2165801C (es)
DE (1) DE69409650T2 (es)
DK (1) DK0705510T3 (es)
ES (1) ES2115957T3 (es)
FI (1) FI112745B (es)
HK (1) HK1005923A1 (es)
IL (1) IL109843A (es)
MY (1) MY111343A (es)
SG (1) SG49912A1 (es)
TW (1) TW244408B (es)
WO (1) WO1995001018A1 (es)
ZA (1) ZA944074B (es)

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Also Published As

Publication number Publication date
EP0705510B1 (en) 1998-04-15
CA2165801C (en) 1999-08-31
FI112745B (fi) 2003-12-31
KR960703296A (ko) 1996-06-19
EP0705510A1 (en) 1996-04-10
CN1124694C (zh) 2003-10-15
DK0705510T3 (da) 1999-01-18
TW244408B (es) 1995-04-01
KR100203469B1 (ko) 1999-06-15
FI956253A0 (fi) 1995-12-22
WO1995001018A1 (en) 1995-01-05
DE69409650T2 (de) 1998-11-26
MY111343A (en) 1999-11-30
BR9406851A (pt) 1996-03-05
HK1005923A1 (en) 1999-01-29
DE69409650D1 (de) 1998-05-20
ZA944074B (en) 1995-03-06
CN1050952C (zh) 2000-03-29
JP2788122B2 (ja) 1998-08-20
US5442627A (en) 1995-08-15
ATE165200T1 (de) 1998-05-15
JPH09500245A (ja) 1997-01-07
SG49912A1 (en) 1998-06-15
IL109843A (en) 1998-01-04
FI956253A7 (fi) 1996-02-22
CA2165801A1 (en) 1995-01-05
CN1125498A (zh) 1996-06-26
IL109843A0 (en) 1994-08-26
CN1103521A (zh) 1995-06-07

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