KR20010033871A - 직접-시퀀스 스펙트럼 확산 통신 시스템에서 높은 비트밀도를 실현하기 위해 순환 확산 코드를 이용하는 방법 - Google Patents
직접-시퀀스 스펙트럼 확산 통신 시스템에서 높은 비트밀도를 실현하기 위해 순환 확산 코드를 이용하는 방법 Download PDFInfo
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- KR20010033871A KR20010033871A KR1020007007434A KR20007007434A KR20010033871A KR 20010033871 A KR20010033871 A KR 20010033871A KR 1020007007434 A KR1020007007434 A KR 1020007007434A KR 20007007434 A KR20007007434 A KR 20007007434A KR 20010033871 A KR20010033871 A KR 20010033871A
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- South Korea
- Prior art keywords
- signal
- pseudo
- code
- noise
- cyclic
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Classifications
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- 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
- H04B1/7097—Interference-related aspects
- H04B1/7103—Interference-related aspects the interference being multiple access interference
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- 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
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
- H03M13/00—Coding, decoding or code conversion, for error detection or error correction; Coding theory basic assumptions; Coding bounds; Error probability evaluation methods; Channel models; Simulation or testing of codes
- H03M13/03—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words
- H03M13/05—Error detection or forward error correction by redundancy in data representation, i.e. code words containing more digits than the source words using block codes, i.e. a predetermined number of check bits joined to a predetermined number of information bits
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Probability & Statistics with Applications (AREA)
- Theoretical Computer Science (AREA)
- Digital Transmission Methods That Use Modulated Carrier Waves (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims (9)
- 순환 확산 코드를 이용하여 직접-시퀀스 스펙트럼 확산 통신 시스템에서 높은 비트 밀도를 실현하는 방법에 있어서,제1 순환 의사-잡음 확산 코드를 생성하는 단계; 및n만큼 시프트된 상기 제1 순환 의사-잡음 확산 코드를 이용하여 제1 신호를 변조함으로써 상기 제1 신호를 확산시키는 단계를 포함하는 방법.
- 제 1 항에 있어서,상기 n의 값은 상기 제1 신호의 값에 대응하는방법.
- 제 1 항에 있어서,상기 n만큼 시프트된 제1 순환 의사-잡음 확산 코드를 이용하여 상기 제1 신호를 복조함으로써 상기 제1 신호를 좁히는(narrowing) 단계를 더 포함하는 방법.
- 제 3 항에 있어서,상기 n의 값은 상기 제1 신호의 값에 대응하는방법.
- 제 1 항에 있어서,상기 제1 순환 의사-잡음 확산 코드는 제1 사용자에게 전송될 신호를 확산시키기 위해 사용되는방법.
- 제 5 항에 있어서,상기 제1 사용자는 상기 제1 순환 의사-잡음 코드를 이용하여 전송된 신호를 디코딩할 수 있는방법.
- 제 1 항에 있어서,상기 제1 순환 의사-잡음 확산 코드와 직교하는(orthogonal) 제2 순환 의사-잡음 확산 코드를 생성하는 단계; 및n만큼 시프트된 상기 제2 순환 의사-잡음 확산 코드를 이용하여 제2 신호를 변조함으로써 상기 제2 신호를 확산시키는 단계를 더 포함하는 방법.
- 제 7 항에 있어서,상기 제2 의사-잡음 확산 코드는 제2 사용자에게 전송될 신호를 확산시키기 위해 사용되는방법.
- 제 8 항에 있어서,상기 제2 사용자는 상기 제2 순환 의사-잡음 코드를 이용하여 전송된 신호를 디코딩할 수 있는방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/002,749 US6026118A (en) | 1998-01-05 | 1998-01-05 | Method for using circular spreading codes to achieve high bit densities in a direct-sequence spread spectrum communication system |
US09/002,749 | 1998-01-05 | ||
PCT/US1998/027092 WO1999035759A1 (en) | 1998-01-05 | 1998-12-18 | A method for using circular spreading codes to achieve high bit densities in a direct-sequence spread spectrum communications system |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20010033871A true KR20010033871A (ko) | 2001-04-25 |
KR100479666B1 KR100479666B1 (ko) | 2005-03-30 |
Family
ID=21702311
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
KR10-2000-7007434A KR100479666B1 (ko) | 1998-01-05 | 1998-12-18 | 직접-시퀀스 스펙트럼 확산 통신 시스템에서 높은 비트밀도를 실현하기 위해 순환 확산 코드를 이용하는 방법 |
Country Status (7)
Country | Link |
---|---|
US (2) | US6026118A (ko) |
EP (1) | EP1046240A4 (ko) |
JP (1) | JP2002501320A (ko) |
KR (1) | KR100479666B1 (ko) |
AU (1) | AU2306699A (ko) |
IL (1) | IL137144A0 (ko) |
WO (1) | WO1999035759A1 (ko) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7012884B2 (en) * | 2001-11-02 | 2006-03-14 | Intel Corporation | Zero-overhead method for sequence reversible and pattern independent orthogonal multiplexing |
US7088673B2 (en) * | 2001-11-02 | 2006-08-08 | Intel Corporation | Dynamically-scalable system and method for multiple user access utilzing multi-bit and multi-code orthogonal multiplexing |
US20030112849A1 (en) * | 2001-12-18 | 2003-06-19 | Gorday Paul Edward | Efficient quadrature code position modulation |
US7447254B1 (en) * | 2004-03-25 | 2008-11-04 | Cypress Semiconductor Corp. | Self-correlating pseudo-noise pairing |
US7796694B1 (en) | 2005-11-04 | 2010-09-14 | Cypress Semiconductor Corporation | Circuit and method or encoding DSSS signals |
US7756194B1 (en) | 2005-11-04 | 2010-07-13 | Cypress Semiconductor Corporation | Circuit and method for decoding code phase modulated signals |
CN101098297B (zh) * | 2006-06-30 | 2010-07-28 | 大唐移动通信设备有限公司 | 一种随机接入方法及导频码的扩展方法 |
CN101453772B (zh) * | 2007-12-05 | 2010-09-22 | 大唐移动通信设备有限公司 | 一种随机接入控制方法及装置 |
US8654819B2 (en) * | 2011-06-22 | 2014-02-18 | Harris Corporation | Systems and methods for pulse rotation modulation encoding and decoding |
US9998251B2 (en) | 2013-10-30 | 2018-06-12 | Samsung Electronics Co., Ltd. | Method and system for selecting spreading sequences with variable spreading factors |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3934203A (en) * | 1974-05-24 | 1976-01-20 | The United States Of America As Represented By The Secretary Of The Navy | Spread spectrum modem |
DE3118018A1 (de) * | 1981-05-07 | 1982-11-25 | Standard Elektrik Lorenz Ag, 7000 Stuttgart | Nachrichtenuebertragungssystem |
FR2534096A1 (fr) * | 1982-10-04 | 1984-04-06 | Tecsi Software | Systeme de transmission numerique a etalement du spectre par codage avec des suites pseudo-aleatoires |
JP2803237B2 (ja) * | 1989-11-07 | 1998-09-24 | ダイキン工業株式会社 | データ伝送方法およびその装置 |
JPH0724397B2 (ja) * | 1990-02-15 | 1995-03-15 | クラリオン株式会社 | スペクトラム拡散通信装置 |
JPH04273632A (ja) * | 1991-02-28 | 1992-09-29 | Nippon Hoso Kyokai <Nhk> | スペクトラム拡散通信方式 |
US5315616A (en) * | 1992-12-31 | 1994-05-24 | Gte Government Systems Corporation | Correlator for DSSS communications |
JPH06350562A (ja) * | 1993-06-08 | 1994-12-22 | Ricoh Co Ltd | スペクトル拡散通信方式 |
US5469469A (en) * | 1993-12-07 | 1995-11-21 | University Of Massachusetts Lowell Research Foundation | Composite spread spectrum signal including modulator demodulator |
JPH09130299A (ja) * | 1995-10-31 | 1997-05-16 | Fujitsu Ltd | スペクトラム拡散信号受信装置 |
EP0782288B1 (en) * | 1995-12-26 | 2005-07-27 | Sharp Kabushiki Kaisha | Spread spectrum communication system |
JPH10163919A (ja) * | 1996-12-02 | 1998-06-19 | Sanyo Electric Works Ltd | スペクトル拡散通信方法及びその装置 |
US6064695A (en) * | 1997-06-20 | 2000-05-16 | Itran Communications Ltd. | Spread spectrum communication system utilizing differential code shift keying |
-
1998
- 1998-01-05 US US09/002,749 patent/US6026118A/en not_active Expired - Lifetime
- 1998-12-18 WO PCT/US1998/027092 patent/WO1999035759A1/en not_active Application Discontinuation
- 1998-12-18 JP JP2000528026A patent/JP2002501320A/ja active Pending
- 1998-12-18 KR KR10-2000-7007434A patent/KR100479666B1/ko not_active IP Right Cessation
- 1998-12-18 AU AU23066/99A patent/AU2306699A/en not_active Abandoned
- 1998-12-18 EP EP98966463A patent/EP1046240A4/en not_active Ceased
- 1998-12-18 IL IL13714498A patent/IL137144A0/xx unknown
-
2000
- 2000-01-26 US US09/491,690 patent/US6798825B1/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
IL137144A0 (en) | 2001-07-24 |
US6798825B1 (en) | 2004-09-28 |
EP1046240A4 (en) | 2002-07-10 |
US6026118A (en) | 2000-02-15 |
JP2002501320A (ja) | 2002-01-15 |
AU2306699A (en) | 1999-07-26 |
KR100479666B1 (ko) | 2005-03-30 |
WO1999035759A1 (en) | 1999-07-15 |
EP1046240A1 (en) | 2000-10-25 |
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