DE29924419U1 - Binary quasi-orthogonal code generating method in code division multiple access communication system, involves selecting quasi-orthogonal code satisfying a correlation property, from code candidate families - Google Patents

Binary quasi-orthogonal code generating method in code division multiple access communication system, involves selecting quasi-orthogonal code satisfying a correlation property, from code candidate families

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Publication number
DE29924419U1
DE29924419U1 DE29924419U DE29924419U DE29924419U1 DE 29924419 U1 DE29924419 U1 DE 29924419U1 DE 29924419 U DE29924419 U DE 29924419U DE 29924419 U DE29924419 U DE 29924419U DE 29924419 U1 DE29924419 U1 DE 29924419U1
Authority
DE
Germany
Prior art keywords
orthogonal code
quasi
code
binary quasi
binary
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
DE29924419U
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German (de)
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
Samsung Electronics Co Ltd
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 Samsung Electronics Co Ltd filed Critical Samsung Electronics Co Ltd
Priority claimed from EP99944918A external-priority patent/EP1034665B1/en
Publication of DE29924419U1 publication Critical patent/DE29924419U1/en
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
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • 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
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0044—OVSF [orthogonal variable spreading factor]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0048—Walsh
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/10—Code generation
    • H04J13/102—Combining codes
    • 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
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Kerdock codes of left and right sequences having full correlation property with m-sequence are generated. Sequences are column permutated while converting m-sequence to Walsh orthogonal code. Right and left sequences are connected to generate mask candidates which are operated to generate quasi-orthogonal code candidate families for selecting quasi-orthogonal code satisfying partial correlation property. A mask is selected corresponding to the generation of selected quasi-orthogonal code. The sequences are column permutated by independently shifting them and inserting 0' at the head of the shifted sequences.

Description

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßt The description text was not recorded electronically  

Der Beschreibungstext wurde nicht elektronisch erfaßtThe description text was not recorded electronically

Claims (3)

1. Kanalübertragungseinrichtung für ein CDMA-Kommunikationssystem mit:
einem Erzeuger zum Erzeugen von einem binärem quasi-orthogonalem Code durch das Betreiben einer binären Quasi-Orthogonalcode-Maske und einem Walsh-orthogonalen Code jeweils in Übereinstimmung mit einem designierten Maskenindex und einem Walsh- Orthogonalcode-Index,
einem Kanalspreizer zum Betreiben von Eingangssignalen und der erzeugten binären quasi-orthogonalen Codes, um Kanalspreizsignale zu erzeugen, und
einem PN (Pseudo Noise = Pseudorauschen)-Maskierungsteil zum Betreiben der Kanalspreizsignale und PN-Sequenzen, um PN-maskierte Kanalsignale zu erzeugen.1. Channel transmission device for a CDMA communication system with:
a generator for generating a binary quasi-orthogonal code by operating a binary quasi-orthogonal code mask and a Walsh orthogonal code each in accordance with a designated mask index and a Walsh orthogonal code index,
a channel spreader for operating input signals and the generated binary quasi-orthogonal codes to generate channel spread signals, and
a PN (pseudo noise) masking part for operating the channel spread signals and PN sequences to generate PN masked channel signals. 2. Kanalübertragungseinrichtung nach Anspruch 1, wobei der binäre Quasi-Orthogonal­ code-Erzeuger umfasst:
einen ersten Erzeuger zum Erzeugen der binären Quasi-Orthogonalcode-Maske in Entsprechung zu dem designierten Maskenindex,
einen zweiten Erzeuger zum Erzeugen des Walsh-orthogonalen Codes in Entsprechung zu dem designierten Walsh-orthogonalen Code, und
einen Addierer zum Betreiben der binären Quasi-Orthogonalcode-Maske und des Walsh-orthogonalen Codes, um einen binären quasi-orthogonalen Code zu erzeugen.2. The channel transmission device according to claim 1, wherein the binary quasi-orthogonal code generator comprises:
a first generator for generating the binary quasi-orthogonal code mask in accordance with the designated mask index,
a second generator for generating the Walsh orthogonal code corresponding to the designated Walsh orthogonal code, and
an adder for operating the binary quasi-orthogonal code mask and the Walsh orthogonal code to generate a binary quasi-orthogonal code. 3. Kanalübertragungseinrichtung für ein CDMA-Kommunikationssystem mit:
einem Erzeuger zum Erzeugen einer binären Quasi-Orthogonalcode-Maske in Entsprechung zu einem designierten Quasi-Orthogonalcode-Index und Erzeugen eines binären quasi-orthogonalen Codes durch das Beteiben der binären Quasi-Orthogonalcode- Maske und eines Walsh-orthogonalen Codes,
einer Einrichtung zum Betreiben von Eingangssignalen und der erzeugten binären quasi-orthogonalen Codes, um Kanalspreizsignale zu erzeugen, und
einer Einrichtung zum Betreiben der Kanalspreizsignale und der komplexen PN- Sequenzen, um PN-maskierte Kanalsignale zu erzeugen.3. Channel transmission device for a CDMA communication system with:
a generator for generating a binary quasi-orthogonal code mask in correspondence with a designated quasi-orthogonal code index and generating a binary quasi-orthogonal code by operating the binary quasi-orthogonal code mask and a Walsh orthogonal code,
means for operating input signals and the generated binary quasi-orthogonal codes to generate channel spread signals, and
means for operating the channel spread signals and the complex PN sequences to generate PN masked channel signals.
DE29924419U 1998-09-25 1999-09-22 Binary quasi-orthogonal code generating method in code division multiple access communication system, involves selecting quasi-orthogonal code satisfying a correlation property, from code candidate families Expired - Lifetime DE29924419U1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR19980040408 1998-09-25
EP99944918A EP1034665B1 (en) 1998-09-25 1999-09-22 Device and method for generating quasi-orthogonal code and spreading channel signals in mobile communication system

Publications (1)

Publication Number Publication Date
DE29924419U1 true DE29924419U1 (en) 2003-03-27

Family

ID=26154114

Family Applications (1)

Application Number Title Priority Date Filing Date
DE29924419U Expired - Lifetime DE29924419U1 (en) 1998-09-25 1999-09-22 Binary quasi-orthogonal code generating method in code division multiple access communication system, involves selecting quasi-orthogonal code satisfying a correlation property, from code candidate families

Country Status (1)

Country Link
DE (1) DE29924419U1 (en)

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R152 Utility model maintained after payment of third maintenance fee after eight years

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