CA2309032A1 - Dispositif et procede de generation de codes orthogonaux dans un systeme de communication mobile - Google Patents

Dispositif et procede de generation de codes orthogonaux dans un systeme de communication mobile Download PDF

Info

Publication number
CA2309032A1
CA2309032A1 CA002309032A CA2309032A CA2309032A1 CA 2309032 A1 CA2309032 A1 CA 2309032A1 CA 002309032 A CA002309032 A CA 002309032A CA 2309032 A CA2309032 A CA 2309032A CA 2309032 A1 CA2309032 A1 CA 2309032A1
Authority
CA
Canada
Prior art keywords
orthogonal code
bit number
effective bit
chip count
generating
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.)
Abandoned
Application number
CA002309032A
Other languages
English (en)
Inventor
Chong-Don Kim
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.)
Samsung Electronics Co Ltd
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2309032A1 publication Critical patent/CA2309032A1/fr
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/12—Generation of orthogonal codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/02—Channels characterised by the type of signal
    • H04L5/023—Multiplexing of multicarrier modulation signals, e.g. multi-user orthogonal frequency division multiple access [OFDMA]
    • H04L5/026—Multiplexing of multicarrier modulation signals, e.g. multi-user orthogonal frequency division multiple access [OFDMA] using code division
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M3/00—Automatic or semi-automatic exchanges

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

L'invention concerne un dispositif et un procédé de génération de codes orthogonaux de différentes longueurs en fonction de vitesses de modulation. On calcule une longueur de code orthogonal correspondant à une vitesse de modulation variable pour déterminer un nombre de bits effectif. On génère de façon séquentielle une valeur de compte d'élément jusqu'à une valeur maximale, cette valeur pouvant être comptée grâce au nombre de bits effectifs. On génère un code orthogonal par une opération logique d'un indice de code orthogonal qui est converti en nombre binaire du nombre de bits effectif et des valeurs de compte d'élément générées de façon séquentielle.
CA002309032A 1998-08-28 1999-08-28 Dispositif et procede de generation de codes orthogonaux dans un systeme de communication mobile Abandoned CA2309032A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
KR1998/35118 1998-08-28
KR19980035118 1998-08-28
PCT/KR1999/000494 WO2000013431A2 (fr) 1998-08-28 1999-08-28 Dispositif et procede de generation de codes orthogonaux dans un systeme de communication mobile

Publications (1)

Publication Number Publication Date
CA2309032A1 true CA2309032A1 (fr) 2000-03-09

Family

ID=19548665

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002309032A Abandoned CA2309032A1 (fr) 1998-08-28 1999-08-28 Dispositif et procede de generation de codes orthogonaux dans un systeme de communication mobile

Country Status (6)

Country Link
EP (1) EP1057287A2 (fr)
CN (1) CN1286840A (fr)
AU (1) AU732063B2 (fr)
BR (1) BR9906781A (fr)
CA (1) CA2309032A1 (fr)
WO (1) WO2000013431A2 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2352944B (en) 1999-05-31 2004-02-11 Korea Electronics Telecomm Apparatus and method for moduating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication sytem

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI925472L (fi) * 1992-12-01 1994-06-02 Nokia Mobile Phones Ltd Tiedonsiirtomenetelmä sekä -järjestelmä
JPH0918450A (ja) * 1995-06-27 1997-01-17 Sony Corp 符号分割多重化送信装置
JP3317866B2 (ja) * 1996-12-20 2002-08-26 富士通株式会社 スペクトル拡散通信システム

Also Published As

Publication number Publication date
WO2000013431A2 (fr) 2000-03-09
AU732063B2 (en) 2001-04-12
AU5531099A (en) 2000-03-21
WO2000013431A3 (fr) 2000-06-29
BR9906781A (pt) 2000-12-05
EP1057287A2 (fr) 2000-12-06
CN1286840A (zh) 2001-03-07

Similar Documents

Publication Publication Date Title
US5311176A (en) Method and apparatus for generating Walsh codes
Kostic et al. The design and performance analysis for several new classes of codes for optical synchronous CDMA and for arbitrary-medium time-hopping synchronous CDMA communication systems
CA2174647A1 (fr) Techniques de densite spectrale par etalement du spectre
US5652538A (en) Integrated curcuit with conductance adjustable by digital control signal
Sarwate et al. Partial correlation effects in direct-sequence spread-spectrum multiple-access communication systems
AU732063B2 (en) Device and method for generating orthogonal codes in mobile communication system
US6052404A (en) Radio communication system employing a spread-spectrum technique
US6956890B2 (en) Process and device for the generation of codes, for example channeling codes for CDMA applications
KR100300357B1 (ko) 이동통신시스템에서 직교부호 생성장치 및 방법
US6535500B1 (en) Transmitter of a mobile station in a CDMA communications system and method therefor
Tsuneda et al. Design of spreading sequences with negative auto-correlations realizable by nonlinear feedback shift registers
KR100327856B1 (ko) M계열을 임의로 쉬프트하는 회로 및 방법
US7289426B2 (en) Method and low consumption device for parallel generating channelization codes for CDMA transmissions, in particular WH and OVSF codes
US6751252B1 (en) Quasi-orthogonal code mask generating device in mobile communication system
Mirzaee et al. Design of a new class of spreading sequence using chaotic dynamical systems for asynchronous DS-CDMA applications
KR100278308B1 (ko) 퍼지이론을 이용한 통신시스템의 동적 전력제어 장치 및 그 동작 방법
US6958712B1 (en) Low gate count 3GPP channelization code generator
US7173900B1 (en) Method and apparatus for chip generation of a chip sequence
van Rooyen et al. Maximum entropy investigation of the inter user interference distribution in a DS/SSMA system.
Yang et al. Next Generation Access Network Based on Hyperchaotic Spread Spectrum Sequences
KR100308887B1 (ko) 계층화된 직교부호 발생장치 및 그 방법
KR100270656B1 (ko) 부호분할다중접속 통신시스템의 단말기 송신장치 및 방법
KR960003101B1 (ko) 왈시-하다마드 함수열 생성기
KR100399199B1 (ko) 가변 복잡도를 갖는 선택적 확산 코드 발생 장치 및 방법
KR100486530B1 (ko) 직교가변 확산계수 코드 생성 방법

Legal Events

Date Code Title Description
EEER Examination request
FZDE Discontinued
FZDE Discontinued

Effective date: 20040312