DE69535415D1 - Verfahren und Anordnungen für Bandspreizkommunikationssysteme mit Vorwärtsfehlerkorrektur - Google Patents

Verfahren und Anordnungen für Bandspreizkommunikationssysteme mit Vorwärtsfehlerkorrektur

Info

Publication number
DE69535415D1
DE69535415D1 DE69535415T DE69535415T DE69535415D1 DE 69535415 D1 DE69535415 D1 DE 69535415D1 DE 69535415 T DE69535415 T DE 69535415T DE 69535415 T DE69535415 T DE 69535415T DE 69535415 D1 DE69535415 D1 DE 69535415D1
Authority
DE
Germany
Prior art keywords
arrangements
methods
spread
communication systems
spectrum communication
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
DE69535415T
Other languages
English (en)
Other versions
DE69535415T2 (de
Inventor
Nambirajan Seshadri
Carl-Erik Wilhelm Sundberg
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.)
AT&T Corp
Original Assignee
AT&T Corp
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 AT&T Corp filed Critical AT&T Corp
Application granted granted Critical
Publication of DE69535415D1 publication Critical patent/DE69535415D1/de
Publication of DE69535415T2 publication Critical patent/DE69535415T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • H04L1/0071—Use of interleaving
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
    • H03M13/35—Unequal or adaptive error protection, e.g. by providing a different level of protection according to significance of source information or by adapting the coding according to the change of transmission channel characteristics
    • 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
    • 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
    • H04L1/0041—Arrangements at the transmitter end
    • 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
    • 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
    • H04L1/007—Unequal error protection
    • 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
    • H04L2001/0098—Unequal error protection
DE69535415T 1994-04-29 1995-04-19 Verfahren und Anordnungen für Bandspreizkommunikationssysteme mit Vorwärtsfehlerkorrektur Expired - Lifetime DE69535415T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US236744 1994-04-29
US08/236,744 US5751739A (en) 1994-04-29 1994-04-29 Methods of and devices for enhancing communications that use spread spectrum technology

Publications (2)

Publication Number Publication Date
DE69535415D1 true DE69535415D1 (de) 2007-04-19
DE69535415T2 DE69535415T2 (de) 2007-11-29

Family

ID=22890770

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69535415T Expired - Lifetime DE69535415T2 (de) 1994-04-29 1995-04-19 Verfahren und Anordnungen für Bandspreizkommunikationssysteme mit Vorwärtsfehlerkorrektur

Country Status (4)

Country Link
US (1) US5751739A (de)
EP (1) EP0681376B1 (de)
CA (1) CA2145567C (de)
DE (1) DE69535415T2 (de)

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US5603081A (en) * 1993-11-01 1997-02-11 Telefonaktiebolaget Lm Ericsson Method for communicating in a wireless communication system
CA2145566C (en) * 1994-04-29 1999-12-28 Nambirajan Seshadri Methods of and devices for enhancing communications that use spread spectrum technology
US5883899A (en) * 1995-05-01 1999-03-16 Telefonaktiebolaget Lm Ericsson Code-rate increased compressed mode DS-CDMA systems and methods
US5742595A (en) * 1995-06-02 1998-04-21 Dsc Communications Corporation Processing CDMA signals
GB2301741A (en) * 1995-06-02 1996-12-11 Dsc Communications Establishing a Downlink Communication Path in a Wireless Communications System
ZA965340B (en) 1995-06-30 1997-01-27 Interdigital Tech Corp Code division multiple access (cdma) communication system
US7929498B2 (en) * 1995-06-30 2011-04-19 Interdigital Technology Corporation Adaptive forward power control and adaptive reverse power control for spread-spectrum communications
US7020111B2 (en) 1996-06-27 2006-03-28 Interdigital Technology Corporation System for using rapid acquisition spreading codes for spread-spectrum communications
US6885652B1 (en) 1995-06-30 2005-04-26 Interdigital Technology Corporation Code division multiple access (CDMA) communication system
US6356555B1 (en) 1995-08-25 2002-03-12 Terayon Communications Systems, Inc. Apparatus and method for digital data transmission using orthogonal codes
US6665308B1 (en) 1995-08-25 2003-12-16 Terayon Communication Systems, Inc. Apparatus and method for equalization in distributed digital data transmission systems
US5768269A (en) * 1995-08-25 1998-06-16 Terayon Corporation Apparatus and method for establishing frame synchronization in distributed digital data communication systems
US5805583A (en) * 1995-08-25 1998-09-08 Terayon Communication Systems Process for communicating multiple channels of digital data in distributed systems using synchronous code division multiple access
US6307868B1 (en) 1995-08-25 2001-10-23 Terayon Communication Systems, Inc. Apparatus and method for SCDMA digital data transmission using orthogonal codes and a head end modem with no tracking loops
US6678311B2 (en) 1996-05-28 2004-01-13 Qualcomm Incorporated High data CDMA wireless communication system using variable sized channel codes
KR100387078B1 (ko) * 1997-07-30 2003-10-22 삼성전자주식회사 대역확산통신시스템의심볼천공및복구장치및방법
US6034997A (en) * 1997-08-19 2000-03-07 Stanford Telecommunications, Inc. Trellis decoding with multiple symbol noncoherent detection and interleaving to combat frequency offset
CN101106418B (zh) * 1998-03-14 2012-10-03 三星电子株式会社 无线通信系统中的接收装置和数据接收方法
JP3429674B2 (ja) * 1998-04-28 2003-07-22 沖電気工業株式会社 多重通信システム
EP1826938A1 (de) * 1998-07-24 2007-08-29 Matsushita Electric Industrial Co., Ltd. CDMA-Funkkommunikationssystem und -verfahren
JP2000068862A (ja) * 1998-08-19 2000-03-03 Fujitsu Ltd 誤り訂正符号化装置
US6421395B1 (en) * 1999-02-09 2002-07-16 Lucent Technologies Inc. Termination of coded or uncoded modulation with path-oriented decoder
US6621872B1 (en) 1999-03-31 2003-09-16 Cisco Technology Inc. Systems and methods for improved medium access control messaging
US6577614B1 (en) 1999-05-27 2003-06-10 Qwest Communications International Inc. System and method for OTA over CDMA data channel
US6298242B1 (en) 1999-07-22 2001-10-02 Qualcomm Inc. Method and apparatus for reducing frame error rate through signal power adjustment
US7089477B1 (en) * 1999-08-18 2006-08-08 California Institute Of Technology Interleaved serial concatenation forming turbo-like codes
DE19947019A1 (de) 1999-09-30 2001-06-07 Infineon Technologies Ag Verfahren und Vorrichtung zum Erzeugen von spreizcodierten Signalen
US7116710B1 (en) 2000-05-18 2006-10-03 California Institute Of Technology Serial concatenation of interleaved convolutional codes forming turbo-like codes
EP1303917B1 (de) * 2000-07-17 2011-11-30 Koninklijke Philips Electronics N.V. Ungleichgewichtiger Fehlerschutz für Packete mit variabler Länge
US6631277B2 (en) * 2001-03-02 2003-10-07 Telefonaktiebolaget Lm Ericsson (Publ) Compensation for antenna diagram optimization
US20040170439A1 (en) * 2001-06-29 2004-09-02 Olli-Pekka Hiironen Method and apparatus for an optical cdma system
FI20011418A (fi) * 2001-06-29 2002-12-30 Nokia Corp Menetelmä ja laite signaalin vastaanottamiseksi optisessa CDMA-järjestelmässä
JP2007517441A (ja) 2003-12-30 2007-06-28 ゼンハイザー・エレクトロニック・ゲゼルシャフト・ミット・ベシュレンクテル・ハフツング・ウント・コンパニー・コマンデイトゲゼルシャフト デジタルマイクロフォン

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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.
IL100213A (en) * 1990-12-07 1995-03-30 Qualcomm Inc Mikrata Kedma phone system and its antenna distribution system
US5214656A (en) * 1990-12-13 1993-05-25 At&T Bell Laboratories Multiplexed coded modulation with unequal error protection
US5204876A (en) * 1991-03-13 1993-04-20 Motorola, Inc. Method and apparatus for providing high data rate traffic channels in a spread spectrum communication system
SE469051B (sv) * 1991-09-10 1993-05-03 Ericsson Telefon Ab L M Metod foer att detektera kanaltillhoerigheten foer ett antal kanaler i ett mobilradiosystem
US5259003A (en) * 1991-11-08 1993-11-02 Teknekron Communications Systems, Inc. Method of encoding two digital data signals
TW224191B (de) * 1992-01-28 1994-05-21 Qualcomm Inc
MX9301888A (es) * 1992-04-10 1993-11-30 Ericsson Telefon Ab L M Acceso multiple de division de tiempo para acceso de un movil en un sistema de acceso multiple de division de codigo.
US5287374A (en) * 1992-04-30 1994-02-15 Hughes Aircraft Company Identification of encoder type through observation of data received
DE69322322T2 (de) * 1992-07-08 1999-06-17 Koninkl Philips Electronics Nv Verkettete Kodierung für OFDM-Übertragung
US5396516A (en) * 1993-02-22 1995-03-07 Qualcomm Incorporated Method and system for the dynamic modification of control paremeters in a transmitter power control system
US5329547A (en) * 1993-03-11 1994-07-12 Motorola, Inc. Method and apparatus for coherent communication in a spread-spectrum communication system
US5463641A (en) * 1993-07-16 1995-10-31 At&T Ipm Corp. Tailored error protection
US5383219A (en) * 1993-11-22 1995-01-17 Qualcomm Incorporated Fast forward link power control in a code division multiple access system

Also Published As

Publication number Publication date
EP0681376B1 (de) 2007-03-07
DE69535415T2 (de) 2007-11-29
EP0681376A2 (de) 1995-11-08
US5751739A (en) 1998-05-12
EP0681376A3 (de) 1997-12-17
CA2145567C (en) 1999-12-28
CA2145567A1 (en) 1995-10-30

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