BR9910588A - Processo para informação de comunicação entre uma primeira estação e um número de segundas estaçãoes localizadas, e, transmissor para transmissão de sìmbolos digitais de uma primeira estação para uma pluralidade de sugundas estações - Google Patents
Processo para informação de comunicação entre uma primeira estação e um número de segundas estaçãoes localizadas, e, transmissor para transmissão de sìmbolos digitais de uma primeira estação para uma pluralidade de sugundas estaçõesInfo
- Publication number
- BR9910588A BR9910588A BR9910588-8A BR9910588A BR9910588A BR 9910588 A BR9910588 A BR 9910588A BR 9910588 A BR9910588 A BR 9910588A BR 9910588 A BR9910588 A BR 9910588A
- Authority
- BR
- Brazil
- Prior art keywords
- symbols
- block
- repeated
- information
- station
- Prior art date
Links
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/204—Multiple access
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- 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
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J11/00—Orthogonal multiplex systems, e.g. using WALSH codes
- H04J11/0023—Interference mitigation or co-ordination
- H04J11/005—Interference mitigation or co-ordination of intercell interference
-
- 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
- H04J13/16—Code allocation
- H04J13/18—Allocation of orthogonal codes
Abstract
"PROCESSO PARA INFORMAçãO DE COMUNICAçãO ENTRE UMA PRIMEIRA ESTAçãO E UM NúMERO DE SEGUNDAS ESTAçõES LOCALIZADAS, E, TRANSMISSOR PARA TRANSMISSãO DE SìMBOLOS DIGITAIS DE UMA PRIMEIRA ESTAçãO PARA UMA PLURALIDADE DE SEGUNDAS ESTAçõES" A presente invenção divulga um processo de codificação de CDMA incluindo as etapas de conversão da informação a ser transmitida em forma digital, codificação de correção de erro da informação digital e montagem dos símbolos codificados em quadros tendo N símbolos. Cada símbolo de informação codificado dentro de um quadro é então repetido um primeiro número de vezes L1 em sucessão e o indício de símbolos repetidos selecionados, determinado por um gerador de códigos de espalhamento, é mudado para produzir um bloco de símbolos de N x L1 símbolos. O bloco de símbolos é, então, repetido um segundo número de vezes L2, onde para cada repetição de bloco, uma mudança de indícios de blocos é aplicada a todos os símbolos do mesmo bloco; o indício para cada bloco pode também ser fornecido pelo gerador de códigos de espalhamento. Os L2 x N x L1 símbolos codificados e repetidos resultantes são, entoa, modulados em uma portadora de radiofreq³ência e transmitidos para um receptor, simultaneamente com símbolos similares destinados a outros receptores, onde informação diferente é transmitida para uma pluralidade de receptores. Os sinais codificados para transmissão simultânea para diferentes receptores podem incluir um número maior de símbolos de informação repetidos um número reduzido L1 vezes ou um número menor de símbolos de informação repetidos um número maior L1 vezes, ao mesmo tempo em que ainda mantém o mesmo número de símbolos repetidos em um bloco. Através da atribuição de seq³ências específicas de espalhamento de blocos para grupos de sinais em várias áreas de serviço adjacentes ou de açodo com uma distância de transmissor - receptor, sinais fortes podem ser discriminados melhor de sinais fracos e interferência intercélulas pode ser reduzida.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/082,722 US6359874B1 (en) | 1998-05-21 | 1998-05-21 | Partially block-interleaved CDMA coding and decoding |
PCT/US1999/010452 WO1999060739A1 (en) | 1998-05-21 | 1999-05-20 | Partially block-interleaved cdma coding and decoding |
Publications (1)
Publication Number | Publication Date |
---|---|
BR9910588A true BR9910588A (pt) | 2001-01-16 |
Family
ID=22173016
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
BR9910588-8A BR9910588A (pt) | 1998-05-21 | 1999-05-20 | Processo para informação de comunicação entre uma primeira estação e um número de segundas estaçãoes localizadas, e, transmissor para transmissão de sìmbolos digitais de uma primeira estação para uma pluralidade de sugundas estações |
Country Status (13)
Country | Link |
---|---|
US (1) | US6359874B1 (pt) |
EP (1) | EP1078486B1 (pt) |
JP (1) | JP2002516519A (pt) |
KR (1) | KR20010034883A (pt) |
CN (1) | CN1148904C (pt) |
AU (1) | AU750068B2 (pt) |
BR (1) | BR9910588A (pt) |
DE (1) | DE69913128T2 (pt) |
EE (1) | EE04252B1 (pt) |
HK (1) | HK1038841A1 (pt) |
IL (1) | IL139763A0 (pt) |
MY (1) | MY122318A (pt) |
WO (1) | WO1999060739A1 (pt) |
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-
1998
- 1998-05-21 US US09/082,722 patent/US6359874B1/en not_active Expired - Lifetime
-
1999
- 1999-05-20 DE DE69913128T patent/DE69913128T2/de not_active Expired - Fee Related
- 1999-05-20 EE EEP200000672A patent/EE04252B1/xx not_active IP Right Cessation
- 1999-05-20 AU AU39859/99A patent/AU750068B2/en not_active Ceased
- 1999-05-20 WO PCT/US1999/010452 patent/WO1999060739A1/en active IP Right Grant
- 1999-05-20 EP EP99922987A patent/EP1078486B1/en not_active Expired - Lifetime
- 1999-05-20 KR KR1020007013091A patent/KR20010034883A/ko active IP Right Grant
- 1999-05-20 CN CNB998064734A patent/CN1148904C/zh not_active Expired - Fee Related
- 1999-05-20 IL IL13976399A patent/IL139763A0/xx unknown
- 1999-05-20 JP JP2000550234A patent/JP2002516519A/ja active Pending
- 1999-05-20 BR BR9910588-8A patent/BR9910588A/pt not_active IP Right Cessation
- 1999-05-20 MY MYPI99001985A patent/MY122318A/en unknown
-
2001
- 2001-12-18 HK HK01108857A patent/HK1038841A1/xx not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP1078486A1 (en) | 2001-02-28 |
EP1078486B1 (en) | 2003-11-26 |
AU3985999A (en) | 1999-12-06 |
HK1038841A1 (en) | 2002-03-28 |
AU750068B2 (en) | 2002-07-11 |
US6359874B1 (en) | 2002-03-19 |
IL139763A0 (en) | 2002-02-10 |
CN1148904C (zh) | 2004-05-05 |
DE69913128T2 (de) | 2004-06-09 |
MY122318A (en) | 2006-04-29 |
JP2002516519A (ja) | 2002-06-04 |
CN1302494A (zh) | 2001-07-04 |
DE69913128D1 (de) | 2004-01-08 |
KR20010034883A (ko) | 2001-04-25 |
EE04252B1 (et) | 2004-02-16 |
WO1999060739A1 (en) | 1999-11-25 |
EE200000672A (et) | 2002-04-15 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
B08F | Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette] |
Free format text: REFERENTE A 8A E 9A ANUIDADES. |
|
B08K | Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette] |
Free format text: REFERENTE AO DESPACHO PUBLICADO NA RPI 1990 DE 25/02/2009. |