AR004249A1 - Metodo para la provision y recepcion de simbolos, aparato codificador de simbolos y dispositivo de comunicaciones digital inalambrico aplicable al mismo - Google Patents

Metodo para la provision y recepcion de simbolos, aparato codificador de simbolos y dispositivo de comunicaciones digital inalambrico aplicable al mismo

Info

Publication number
AR004249A1
AR004249A1 ARP960104989A ARP960104989A AR004249A1 AR 004249 A1 AR004249 A1 AR 004249A1 AR P960104989 A ARP960104989 A AR P960104989A AR P960104989 A ARP960104989 A AR P960104989A AR 004249 A1 AR004249 A1 AR 004249A1
Authority
AR
Argentina
Prior art keywords
symbol
bit
bits
provision
reception
Prior art date
Application number
ARP960104989A
Other languages
English (en)
Original Assignee
Motorola 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 Motorola Inc filed Critical Motorola Inc
Publication of AR004249A1 publication Critical patent/AR004249A1/es

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
    • H04L27/3405—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power
    • H04L27/3416—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes
    • H04L27/3427—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation
    • H04L27/3433—Modifications of the signal space to increase the efficiency of transmission, e.g. reduction of the bit error rate, bandwidth, or average power in which the information is carried by both the individual signal points and the subset to which the individual points belong, e.g. using coset coding, lattice coding, or related schemes in which the constellation is the n - fold Cartesian product of a single underlying two-dimensional constellation using an underlying square constellation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Error Detection And Correction (AREA)

Abstract

Una constelación de símbolos está dividida lógicamente en una pluralidad de subconjuntos de múltiples símbolos (201-204). Además, se provee una seriede bits primarios y una serie de bits secundarios. Por lo menos un primer bit primario seleccionado se codifica en control de error (303) para proveer unpresímbolo de M bits (603) que únicamente corresponde al subconjunto de múltiples símbolos (602). El presímbolo de M bits es modulado (304) por almenos un primer bit secundario seleccionado para proveer un símbolo de N bits (605) que únicamente corresponde a un símbolo incluido en el subconjunto demúltiples símbolos. Los bits primarios recuperados se determinan comparando un símbolo recibido (609) con sólo un símbolo en cada unolos de subconjuntos demúltiples símbolos. Además, los bits secundarios recuperados se determinan comparando el símbolo recibido con límites de decisión predeterminados(622). Deesta manera, se proveen grados de protección de errores variables que permiten una variedad de velocidades de codificación más amplia.
ARP960104989A 1995-10-31 1996-10-31 Metodo para la provision y recepcion de simbolos, aparato codificador de simbolos y dispositivo de comunicaciones digital inalambrico aplicable al mismo AR004249A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US55110395A 1995-10-31 1995-10-31

Publications (1)

Publication Number Publication Date
AR004249A1 true AR004249A1 (es) 1998-11-04

Family

ID=24199875

Family Applications (1)

Application Number Title Priority Date Filing Date
ARP960104989A AR004249A1 (es) 1995-10-31 1996-10-31 Metodo para la provision y recepcion de simbolos, aparato codificador de simbolos y dispositivo de comunicaciones digital inalambrico aplicable al mismo

Country Status (7)

Country Link
CN (1) CN1166900A (es)
AR (1) AR004249A1 (es)
BR (1) BR9607557A (es)
FR (1) FR2740634A1 (es)
GB (1) GB2312814A (es)
IL (1) IL119467A0 (es)
WO (1) WO1997016910A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100576014B1 (ko) * 2003-05-23 2006-05-02 삼성전자주식회사 이동통신 시스템에서 심볼 단위의 결정 경계값 추정을위한 장치 및 방법
CN100596347C (zh) * 2008-05-21 2010-03-31 四川虹微技术有限公司 数字音频广播接收机自适应纠错方法

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4489418A (en) * 1983-04-18 1984-12-18 At&T Bell Laboratories Differential encoding technique
US4941154A (en) * 1989-05-30 1990-07-10 At&T Bell Laboratories Trellis coding method and arrangement for fractional bit rates
FR2660131B1 (fr) * 1990-03-23 1992-06-19 France Etat Dispositif de transmissions de donnees numeriques a au moins deux niveaux de protection, et dispositif de reception correspondant.
JPH0626346B2 (ja) * 1990-04-26 1994-04-06 郵政省通信総合研究所長 畳込み符号化直交ｆｍ・ビタビ受信方式
US5263051A (en) * 1991-07-05 1993-11-16 Codex Corporation Device and method of interleaving for a trellis precoding system
US5651032A (en) * 1993-11-04 1997-07-22 Kabushiki Kaisha Toshiba Apparatus and method for trellis decoder
EP0679000A1 (en) * 1994-04-22 1995-10-25 Koninklijke Philips Electronics N.V. Soft quantisation
US5546420A (en) * 1994-04-29 1996-08-13 At&T Corp. Methods of and devices for enhancing communications that use spread spectrum technology by using variable code techniques

Also Published As

Publication number Publication date
FR2740634A1 (fr) 1997-04-30
GB9713516D0 (en) 1997-09-03
IL119467A0 (en) 1997-01-10
WO1997016910A1 (en) 1997-05-09
BR9607557A (pt) 1998-07-07
MX9704951A (es) 1997-10-31
CN1166900A (zh) 1997-12-03
GB2312814A (en) 1997-11-05

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