KR20000017420A - Cdma 시스템 - Google Patents
Cdma 시스템 Download PDFInfo
- Publication number
- KR20000017420A KR20000017420A KR1019990034563A KR19990034563A KR20000017420A KR 20000017420 A KR20000017420 A KR 20000017420A KR 1019990034563 A KR1019990034563 A KR 1019990034563A KR 19990034563 A KR19990034563 A KR 19990034563A KR 20000017420 A KR20000017420 A KR 20000017420A
- Authority
- KR
- South Korea
- Prior art keywords
- cdma
- cdma signal
- bit
- signal
- receiver
- Prior art date
Links
Classifications
-
- 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
- H04B7/216—Code division or spread-spectrum multiple access [CDMA, SSMA]
-
- 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
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/005—Iterative decoding, including iteration between signal detection and decoding operation
-
- 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
- H04L1/0042—Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape
-
- 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
- H04L1/0047—Decoding adapted to other signal detection operation
- H04L1/0048—Decoding adapted to other signal detection operation in conjunction with detection of multiuser or interfering signals, e.g. iteration between CDMA or MIMO detector and FEC decoder
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Error Detection And Correction (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Transceivers (AREA)
Abstract
Description
Claims (18)
- CDMA 시스템에 있어서,전송될 CDMA 신호를 처리하기 위한 엔코더 및 비트 인터리버를 구비하는 전송기와,상기 처리된 CDMA 신호를 전송하는 수단과,상기 전송된 CDMA 신호를 수신하는 수단과,상기 수신된 CDMA 신호를 처리하기 위한 비트 디인터리버 및 디코더를 구비하는 수신기를 구비하며,상기 전송기는 상기 엔코더 및 비트 인터리버와 직렬로 접속되는 매퍼를 구비하고 상기 수신기는 상기 비트 디인터리버 및 디코더와 직렬로 접속된 디매퍼를 구비하는 것을 특징으로 하는 CDMA 시스템.
- 제1항에 있어서,상기 수신기는 상기 디코더의 출력을 상기 디매퍼로 다시 통과시킴으로써 반복적인 디매핑을 수행하는 것을 특징으로 하는 CDMA 시스템.
- 제1항 또는 제2항에 있어서,상기 시스템은 다수 사용자 CDMA 시스템인 것을 특징으로 하는 CDMA 시스템.
- 제3항에 있어서,상기 전송기는 상기 매퍼와 직렬인 디멀티플렉서를 구비하는 것을 특징으로 하는 CDMA 시스템.
- 제3항에 있어서,상기 수신기는 상기 디매퍼와 직렬인 멀티플렉서를 구비하는 것을 특징으로 하는 CDMA 시스템.
- 제1항 또는 제2항에 있어서,멀티코드 CDMA 시스템인 것을 특징으로 하는 CDMA 시스템.
- CDMA 전송기에 있어서,전송될 CDMA 신호를 처리하기 위한 엔코더 및 비트 인터리버와,상기 처리된 CDMA 신호를 전송하는 수단을 구비하며,상기 전송기는 상기 엔코더 및 비트 인터리버와 직렬로 접속되는 매퍼를 구비하는 것을 특징으로 하는 CDMA 전송기.
- 제7항에 있어서,다수 사용자 CDMA 전송기인 것을 특징으로 하는 CDMA 전송기.
- 제8항에 있어서,상기 매퍼와 직렬인 디멀티플렉서를 구비하는 것을 특징으로 하는 CDMA 전송기.
- CDMA 수신기에 있어서,상기 전송된 CDMA 신호를 수신하는 수단과,상기 수신된 CDMA 신호를 처리하기 위한 비트 디인터리버 및 디코더를 구비하며,상기 수신기는 상기 비트 디인터리버 및 디코더와 직렬로 접속된 디매퍼를 구비하는 것을 특징으로 하는 CDMA 수신기.
- 제10항에 있어서,상기 디코더의 출력을 상기 디매퍼로 다시 통과시킴으로써 반복적인 디매핑을 수행하는 것을 특징으로 하는 CDMA 수신기.
- 제11항에 있어서,다수 사용자 CDMA 수신기인 것을 특징으로 하는 CDMA 수신기.
- 제12항에 있어서,상기 디매퍼와 직렬인 멀티플렉서를 구비하는 것을 특징으로 하는 CDMA 수신기.
- CDMA 신호를 전송하는 방법에 있어서,전송될 CDMA 신호를 발생시키는 단계와,상기 CDMA 신호를 엔코딩하고 비트 인터리빙하는 단계와,상기 엔코딩되고 인터리빙된 CDMA 신호를 전송하는 단계를 포함하며,상기 엔코딩되고 인터리빙된 CDMA 신호는 전송되기 전 매핑되는 것을 특징으로 하는 CDMA 신호 전송 방법.
- 제14항에 따라서 전송된 CDMA 신호를 수신하는 방법에 있어서,상기 전송된 CDMA 신호를 수신하는 단계와,상기 수신된 CDMA 신호를 비트 디인터리빙 및 디코딩하는 단계를 포함하며,상기 수신된 CDMA 신호는 디인터리빙되고 디코딩되기 전에 디매핑되는 것을 특징으로 하는 CDMA 신호 수신 방법.
- 제15항에 있어서,상기 CDMA 신호는 상기 비트 디인터리빙, 디코딩 및 디매핑 단계들을 반복함으로써 반복적으로 디매핑되는 것을 특징으로 하는 CDMA 수신 방법.
- 제14항에 있어서,상기 CDMA 신호는 다수사용자 CDMA 신호인 것을 특징으로 하는 CDMA 신호 전송 방법.
- 제14항에 있어서,상기 CDMA 신호는 멀티코드 CDMA 시스템인 것을 특징으로 하는 CDMA 신호 전송 방법.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98306720A EP0982870B1 (en) | 1998-08-21 | 1998-08-21 | Multicode CDMA system using iterative decoding |
EP98306720.8 | 1998-08-21 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20000017420A true KR20000017420A (ko) | 2000-03-25 |
KR100466106B1 KR100466106B1 (ko) | 2005-01-13 |
Family
ID=8235010
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-1999-0034563A KR100466106B1 (ko) | 1998-08-21 | 1999-08-20 | Cdma 시스템 |
Country Status (10)
Country | Link |
---|---|
US (1) | US6611513B1 (ko) |
EP (1) | EP0982870B1 (ko) |
JP (1) | JP3878774B2 (ko) |
KR (1) | KR100466106B1 (ko) |
CN (1) | CN100425016C (ko) |
AU (1) | AU727342B2 (ko) |
BR (1) | BR9903583A (ko) |
CA (1) | CA2277421A1 (ko) |
DE (1) | DE69839625D1 (ko) |
ES (1) | ES2308796T3 (ko) |
Cited By (1)
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KR100447177B1 (ko) * | 2001-12-06 | 2004-09-04 | 엘지전자 주식회사 | 인터리빙 방법 및 이를 위한 장치 |
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KR100334770B1 (ko) * | 1999-07-08 | 2002-05-03 | 윤종용 | 이동통신시스템의 전송율 정합을 위한 역다중화기 및다중화기 제어 장치 및 방법 |
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US7120213B2 (en) | 2000-10-27 | 2006-10-10 | Texas Instruments Incorporated | Using SISO decoder feedback to produce symbol probabilities for use in wireless communications that utilize single encoder turbo coding and transmit diversity |
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-
1998
- 1998-08-21 ES ES98306720T patent/ES2308796T3/es not_active Expired - Lifetime
- 1998-08-21 DE DE69839625T patent/DE69839625D1/de not_active Expired - Lifetime
- 1998-08-21 EP EP98306720A patent/EP0982870B1/en not_active Expired - Lifetime
-
1999
- 1999-07-06 CA CA002277421A patent/CA2277421A1/en not_active Abandoned
- 1999-08-11 BR BR9903583-9A patent/BR9903583A/pt not_active IP Right Cessation
- 1999-08-17 US US09/375,645 patent/US6611513B1/en not_active Expired - Lifetime
- 1999-08-18 CN CNB991179277A patent/CN100425016C/zh not_active Expired - Fee Related
- 1999-08-18 AU AU44557/99A patent/AU727342B2/en not_active Ceased
- 1999-08-20 JP JP23334399A patent/JP3878774B2/ja not_active Expired - Fee Related
- 1999-08-20 KR KR10-1999-0034563A patent/KR100466106B1/ko active IP Right Grant
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100447177B1 (ko) * | 2001-12-06 | 2004-09-04 | 엘지전자 주식회사 | 인터리빙 방법 및 이를 위한 장치 |
Also Published As
Publication number | Publication date |
---|---|
CN100425016C (zh) | 2008-10-08 |
EP0982870A1 (en) | 2000-03-01 |
KR100466106B1 (ko) | 2005-01-13 |
AU727342B2 (en) | 2000-12-14 |
EP0982870B1 (en) | 2008-06-18 |
BR9903583A (pt) | 2001-03-06 |
ES2308796T3 (es) | 2008-12-01 |
JP2000092025A (ja) | 2000-03-31 |
AU4455799A (en) | 2000-03-23 |
US6611513B1 (en) | 2003-08-26 |
CN1250284A (zh) | 2000-04-12 |
JP3878774B2 (ja) | 2007-02-07 |
DE69839625D1 (de) | 2008-07-31 |
CA2277421A1 (en) | 2000-02-21 |
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