CN1228649A - 防止扩展正交码发生碰撞的方法 - Google Patents
防止扩展正交码发生碰撞的方法 Download PDFInfo
- Publication number
- CN1228649A CN1228649A CN98126602A CN98126602A CN1228649A CN 1228649 A CN1228649 A CN 1228649A CN 98126602 A CN98126602 A CN 98126602A CN 98126602 A CN98126602 A CN 98126602A CN 1228649 A CN1228649 A CN 1228649A
- Authority
- CN
- China
- Prior art keywords
- square matrix
- matrix code
- extended orthogonal
- collision
- code
- 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.)
- Granted
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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
- H04L27/30—Systems using multi-frequency codes wherein each code element is represented by a combination of frequencies
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04J—MULTIPLEX COMMUNICATION
- H04J13/00—Code division multiplex systems
- H04J13/10—Code generation
- H04J13/102—Combining codes
- H04J13/105—Combining codes by extending
-
- 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
- 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
-
- 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]
Abstract
Description
Claims (14)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR82193/1997 | 1997-12-31 | ||
KR1019970082193A KR100285548B1 (ko) | 1997-12-31 | 1997-12-31 | 더블유씨디엠에이-더블유엘엘 시스템에서의 확장 직교 코드 충돌 회피 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1228649A true CN1228649A (zh) | 1999-09-15 |
CN1158800C CN1158800C (zh) | 2004-07-21 |
Family
ID=19530792
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CNB981266029A Expired - Fee Related CN1158800C (zh) | 1997-12-31 | 1998-12-29 | 防止扩展正交码发生碰撞的方法 |
Country Status (3)
Country | Link |
---|---|
US (1) | US6426939B1 (zh) |
KR (1) | KR100285548B1 (zh) |
CN (1) | CN1158800C (zh) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1318992C (zh) * | 2005-08-26 | 2007-05-30 | 东南大学 | 以循环移位方式实现的多址接入、防碰撞方法 |
US7599440B2 (en) | 2003-05-17 | 2009-10-06 | Lg Electronics Inc. | Downlink control channel allocation method in mobile communication system |
WO2018000308A1 (zh) * | 2016-06-30 | 2018-01-04 | 华为技术有限公司 | 上行数据传输方法及装置 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7275224B2 (en) * | 2004-04-02 | 2007-09-25 | International Business Machines Corporation | Method for providing an area optimized binary orthogonality checker |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5341396A (en) * | 1993-03-02 | 1994-08-23 | The Boeing Company | Multi-rate spread system |
US5602833A (en) * | 1994-12-19 | 1997-02-11 | Qualcomm Incorporated | Method and apparatus for using Walsh shift keying in a spread spectrum communication system |
US5793759A (en) * | 1995-08-25 | 1998-08-11 | Terayon Corporation | Apparatus and method for digital data transmission over video cable using orthogonal cyclic codes |
US6091760A (en) * | 1998-06-29 | 2000-07-18 | L-3 Communications Corporation | Non-recursively generated orthogonal PN codes for variable rate CDMA |
-
1997
- 1997-12-31 KR KR1019970082193A patent/KR100285548B1/ko not_active IP Right Cessation
-
1998
- 1998-12-09 US US09/207,812 patent/US6426939B1/en not_active Expired - Lifetime
- 1998-12-29 CN CNB981266029A patent/CN1158800C/zh not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7599440B2 (en) | 2003-05-17 | 2009-10-06 | Lg Electronics Inc. | Downlink control channel allocation method in mobile communication system |
CN1754328B (zh) * | 2003-05-17 | 2012-07-04 | Lg电子株式会社 | 移动通信系统中下行链路控制信道分配方法 |
CN1318992C (zh) * | 2005-08-26 | 2007-05-30 | 东南大学 | 以循环移位方式实现的多址接入、防碰撞方法 |
WO2018000308A1 (zh) * | 2016-06-30 | 2018-01-04 | 华为技术有限公司 | 上行数据传输方法及装置 |
Also Published As
Publication number | Publication date |
---|---|
CN1158800C (zh) | 2004-07-21 |
US6426939B1 (en) | 2002-07-30 |
KR19990061900A (ko) | 1999-07-26 |
KR100285548B1 (ko) | 2001-04-02 |
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Legal Events
Date | Code | Title | Description |
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C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C56 | Change in the name or address of the patentee |
Owner name: LG ELECTRONIC CO., LTD. Free format text: FORMER NAME OR ADDRESS: LG INFORMATION + COMMUNICATIONS LTD. |
|
CP03 | Change of name, title or address |
Address after: Seoul, South Kerean Patentee after: LG Electronics Inc. Address before: Seoul, South Korea Patentee before: LG Information & Communications, Ltd. |
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ASS | Succession or assignment of patent right |
Owner name: LG- NORTEL CO., LTD. Free format text: FORMER OWNER: LG ELECTRONIC CO., LTD. Effective date: 20061117 |
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C41 | Transfer of patent application or patent right or utility model | ||
TR01 | Transfer of patent right |
Effective date of registration: 20061117 Address after: Seoul, South Kerean Patentee after: LG Nortel Co., Ltd. Address before: Seoul, South Kerean Patentee before: LG Electronics Inc. |
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C56 | Change in the name or address of the patentee |
Owner name: LG-ERICSSON CO., LTD. Free format text: FORMER NAME: LG-NORTEL CO., LTD. |
|
CP01 | Change in the name or title of a patent holder |
Address after: Seoul, South Kerean Patentee after: Novera Optics Korea Co., Ltd. Address before: Seoul, South Kerean Patentee before: LG Nortel Co., Ltd. |
|
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20040721 Termination date: 20141229 |
|
EXPY | Termination of patent right or utility model |