BR9911727A - Códigos pn ortogonais gerados não recursivamente para cdma de taxa variável - Google Patents
Códigos pn ortogonais gerados não recursivamente para cdma de taxa variávelInfo
- Publication number
- BR9911727A BR9911727A BR9911727-4A BR9911727A BR9911727A BR 9911727 A BR9911727 A BR 9911727A BR 9911727 A BR9911727 A BR 9911727A BR 9911727 A BR9911727 A BR 9911727A
- Authority
- BR
- Brazil
- Prior art keywords
- orthogonal
- codes
- variable rate
- recursively
- exchangeable
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/0007—Code type
- H04J13/0022—PN, e.g. Kronecker
-
- 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
- H04J13/16—Code allocation
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
- H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
- H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
- H04B2201/70703—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation using multiple or variable rates
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Patente de Invenção: <B>''CóDIGOS PN ORTOGONAIS GERADOS NãO RECURSIVAMENTE PARA CDMA DE TAXA VARIáVEL''<D>. Trata-se de um método e aparelho para construir uma série de conjuntos de códigos PN (30) que podem ser utilizados para sistemas CDMA de múltiplas taxas síncronos ou quasissíncronos. A técnica de construção produz códigos PN (22) que estão balanceados e que além disso não requerem qualquer sincronização de estações bases adjacentes. O método é um método não-recursivo que utiliza uma matriz ortogonal permutada (24) para modular matrizes ortogonais permutadas para criar códigos PN que suportam a operação com múltiplas taxas. Além disso, os códigos construídos utilizando o método possuem propriedades espectrais muito boas (se apropriadamente escolhidas) quando o comprimento do código, n, é razoavelmente grande.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US9107098P | 1998-06-29 | 1998-06-29 | |
US09/328,546 US6724741B1 (en) | 1998-06-29 | 1999-06-09 | PN code selection for synchronous CDMA |
US09/329,473 US6091760A (en) | 1998-06-29 | 1999-06-10 | Non-recursively generated orthogonal PN codes for variable rate CDMA |
PCT/US1999/014456 WO2000001092A1 (en) | 1998-06-29 | 1999-06-24 | Non-recursively generated orthogonal pn codes for variable rate cdma |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9911727A true BR9911727A (pt) | 2001-03-20 |
Family
ID=27376817
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9911727-4A BR9911727A (pt) | 1998-06-29 | 1999-06-24 | Códigos pn ortogonais gerados não recursivamente para cdma de taxa variável |
Country Status (10)
Country | Link |
---|---|
US (1) | US6091760A (pt) |
EP (1) | EP1092287A1 (pt) |
JP (1) | JP2002519934A (pt) |
KR (1) | KR20010071698A (pt) |
CN (1) | CN1319283A (pt) |
AU (1) | AU4721599A (pt) |
BR (1) | BR9911727A (pt) |
IL (1) | IL140559A0 (pt) |
MX (1) | MXPA01000099A (pt) |
WO (1) | WO2000001092A1 (pt) |
Families Citing this family (58)
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FR2767007B1 (fr) * | 1997-08-01 | 1999-11-05 | France Telecom | Procede d'acces multiple dans un reseau cellulaire de radiocommunication |
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KR100285548B1 (ko) * | 1997-12-31 | 2001-04-02 | 서평원 | 더블유씨디엠에이-더블유엘엘 시스템에서의 확장 직교 코드 충돌 회피 방법 |
US6122310A (en) * | 1998-01-29 | 2000-09-19 | Motorola, Inc. | Method and apparatus for facilitating multi-rate data transmission by selecting a plurality of spreading codes |
US6724741B1 (en) * | 1998-06-29 | 2004-04-20 | L-3 Communications Corporation | PN code selection for synchronous CDMA |
US6240143B1 (en) * | 1998-08-18 | 2001-05-29 | Qualcomm Inc. | Method and apparatus for the reflection and transmission of quasi orthogonal vectors |
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FR2784525B1 (fr) * | 1998-10-12 | 2006-07-28 | Cit Alcatel | Procede d'allocation de codes orthogonaux dans un systeme de radiocommunications mobiles du type a acces multiple par repartition de codes utilisant des codes de longueur variable |
US6314125B1 (en) * | 1998-12-09 | 2001-11-06 | Qualcomm Incorporated | Method and apparatus for the construction and transmission of binary quasi orthogonal vectors |
US6125378A (en) * | 1999-01-13 | 2000-09-26 | Barbano; Paolo Emilio | Method and apparatus for generating families of code signals using multiscale shuffling |
US6545975B1 (en) * | 1999-04-19 | 2003-04-08 | Lucent Technologies Inc. | Method of enhancing security for the transmission of information |
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US7911993B2 (en) * | 2000-07-19 | 2011-03-22 | Ipr Licensing, Inc. | Method and apparatus for allowing soft handoff of a CDMA reverse link utilizing an orthogonal channel structure |
US8537656B2 (en) | 2000-07-19 | 2013-09-17 | Ipr Licensing, Inc. | Method for compensating for multi-path of a CDMA reverse link utilizing an orthogonal channel structure |
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US6956891B2 (en) * | 2000-11-15 | 2005-10-18 | Go-Cdma Limited | Method and apparatus for non-linear code-division multiple access technology |
US20020090024A1 (en) * | 2000-11-15 | 2002-07-11 | Tan Keng Tiong | Method and apparatus for non-linear code-division multiple access technology |
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US6574269B1 (en) * | 2000-11-21 | 2003-06-03 | Bbnt Solutions Llc | Asymmetric orthogonal codes for wireless system receivers with multiplication-free correlators |
US6574268B1 (en) * | 2000-11-21 | 2003-06-03 | Bbnt Solutions Llc | Asymmetric orthogonal codes for optical communications |
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US8385470B2 (en) * | 2000-12-05 | 2013-02-26 | Google Inc. | Coding a signal with a shuffled-Hadamard function |
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US6836504B2 (en) * | 2001-02-14 | 2004-12-28 | Motorola, Inc. | Method and apparatus for spreading symbols in a communication system |
US20030021271A1 (en) * | 2001-04-03 | 2003-01-30 | Leimer Donald K. | Hybrid wireless communication system |
US6982946B2 (en) * | 2001-04-05 | 2006-01-03 | Telefonaktiebolaget Lm Ericsson (Publ) | Partly orthogonal multiple code trees |
US7075968B1 (en) * | 2001-06-06 | 2006-07-11 | At&T Corp. | Method for whitening spread spectrum codes |
US6917581B2 (en) | 2001-07-17 | 2005-07-12 | Ipr Licensing, Inc. | Use of orthogonal or near orthogonal codes in reverse link |
US7453921B1 (en) | 2001-12-11 | 2008-11-18 | Google Inc. | LPC filter for removing periodic and quasi-periodic interference from spread spectrum signals |
US7593357B2 (en) | 2002-03-28 | 2009-09-22 | Interdigital Technology Corporation | Transmit processing using receiver functions |
US7190711B2 (en) * | 2002-09-11 | 2007-03-13 | L-3 Communications Corporation | Linear search system and method for determining Psuedo-Noise (PN) composite phase |
US20040091055A1 (en) * | 2002-10-30 | 2004-05-13 | Williams Thomas Holtzman | Digital transmission system using non-orthogonal matrices |
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WO2004057784A1 (en) * | 2002-12-23 | 2004-07-08 | Bae Systems Plc | Improvements in or relating to spreading codes for quasisynchronous code division multiple access systems |
GB0230260D0 (en) * | 2002-12-23 | 2003-02-05 | Bae Systems Plc | Improvements in or relating to spreading codes for quasisynchronous code division multiple access systems |
US7031372B2 (en) * | 2003-04-22 | 2006-04-18 | Motorola, Inc. | Multiple user reconfigurable CDMA processor |
US7114069B2 (en) * | 2003-04-22 | 2006-09-26 | Motorola, Inc. | Reconfigurable processing circuit including a delay locked loop multiple frequency generator for generating a plurality of clock signals which are configured in frequency by a control processor |
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US20050031018A1 (en) * | 2003-06-27 | 2005-02-10 | Nokia Corporation | Zero-padded OFDM with improved performance over multipath channels |
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US7609749B1 (en) | 2003-07-17 | 2009-10-27 | L-3 Communications Corporation | Method and apparatus for generating non-recursive variable rate orthogonal spreading codes |
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EP1836789A1 (de) * | 2005-01-10 | 2007-09-26 | Siemens Aktiengesellschaft, A German Corporation | Codefolge und funkstation |
DE102005001149A1 (de) * | 2005-01-10 | 2006-07-20 | Siemens Ag | Codefolge und Funkstation |
DE102005006893B4 (de) * | 2005-02-15 | 2011-11-24 | Siemens Ag | Funkstation und Verfahren zur Übertragung von Daten |
US7765456B1 (en) * | 2005-03-31 | 2010-07-27 | Xilinx, Inc. | Optimal multi-user orthogonal variable spreading factor (OVSF) code generator |
EP1899742B1 (en) * | 2005-07-01 | 2009-08-26 | European Space Agency | Spreading codes for a satellite navigation system |
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CN101296022B (zh) | 2007-04-24 | 2012-09-26 | 展讯通信(上海)有限公司 | E-hich信道的特征码分配方法 |
WO2009134094A2 (ko) * | 2008-04-30 | 2009-11-05 | 엘지전자주식회사 | 무선통신 시스템에서 제어신호 전송 방법 및 장치 |
FR2934696A1 (fr) * | 2008-08-01 | 2010-02-05 | Groupe Ecoles Telecomm | Procede de generation de sequences de codes pour des communications a acces multiples par repartition de codes et systeme associe. |
US8102897B1 (en) | 2009-01-28 | 2012-01-24 | L-3 Communications, Corp. | Direct sequence spread spectrum system and method with plural chipping rates |
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-
1999
- 1999-06-10 US US09/329,473 patent/US6091760A/en not_active Expired - Lifetime
- 1999-06-24 AU AU47215/99A patent/AU4721599A/en not_active Abandoned
- 1999-06-24 BR BR9911727-4A patent/BR9911727A/pt not_active Application Discontinuation
- 1999-06-24 IL IL14055999A patent/IL140559A0/xx unknown
- 1999-06-24 MX MXPA01000099A patent/MXPA01000099A/es not_active Application Discontinuation
- 1999-06-24 EP EP99930743A patent/EP1092287A1/en not_active Withdrawn
- 1999-06-24 WO PCT/US1999/014456 patent/WO2000001092A1/en not_active Application Discontinuation
- 1999-06-24 KR KR1020007015083A patent/KR20010071698A/ko not_active Application Discontinuation
- 1999-06-24 JP JP2000557567A patent/JP2002519934A/ja active Pending
- 1999-06-24 CN CN99810409A patent/CN1319283A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
US6091760A (en) | 2000-07-18 |
WO2000001092A1 (en) | 2000-01-06 |
CN1319283A (zh) | 2001-10-24 |
EP1092287A1 (en) | 2001-04-18 |
MXPA01000099A (es) | 2002-04-24 |
AU4721599A (en) | 2000-01-17 |
JP2002519934A (ja) | 2002-07-02 |
IL140559A0 (en) | 2002-02-10 |
KR20010071698A (ko) | 2001-07-31 |
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Legal Events
Date | Code | Title | Description |
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FA10 | Dismissal: dismissal - article 33 of industrial property law | ||
B11Y | Definitive dismissal - extension of time limit for request of examination expired [chapter 11.1.1 patent gazette] |