KR970031399A - Direct Spread / Code Division Multiple Access Communication System Using Pilot Channel - Google Patents
Direct Spread / Code Division Multiple Access Communication System Using Pilot Channel Download PDFInfo
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- KR970031399A KR970031399A KR1019950042989A KR19950042989A KR970031399A KR 970031399 A KR970031399 A KR 970031399A KR 1019950042989 A KR1019950042989 A KR 1019950042989A KR 19950042989 A KR19950042989 A KR 19950042989A KR 970031399 A KR970031399 A KR 970031399A
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Abstract
1. 청구범위에 기재된 발명이 속한 기술분야1. TECHNICAL FIELD OF THE INVENTION
본 발명은 파일럿트채널을 이용한 직접확산/부호분할다중접속 통신시스템에 관한 것이다.The present invention relates to a direct spread / code division multiple access communication system using a pilot channel.
2. 발명이 해결하려고 하는 기술적 과제2. The technical problem to be solved by the invention
파일럿트채널을 이용하여 데이타를 전송할 시 아이(I)암 채널데이타 와 큐(Q)암 채널데이타가 동시에 제로가 됨에 따라 송신기가 온-오프키잉 되는 것을 방지함으로써 수신기의 수신성능의 향상을 위한 직접확산/부호 분할다중접속 통신시스템을 구현한다.When the data is transmitted using the pilot channel, the I (I) female channel data and the Q (Q) female channel data become zero at the same time, thereby preventing the transmitter from being on-off keyed directly to improve the reception performance of the receiver. Implement a spread / code division multiple access communication system.
3. 발명의 해결방법의 요지3. Summary of Solution to Invention
본 발명에 따른 직접확산/부호분할다중접속 통신시스템은; 송신시에는 I암 파일럿트채널데이타에 I암 의사 잡음(PN)부호를 승산하고, Q암 파일럿트채널데이타에 Q암 PN부호를 승산하고, 다수의 I 암 사용자채널데이타에는 반전된 Q암 PN부호를 승산하고, 다수의 Q암 파일럿트채널데이타에는 I암 PN부호를 승산하며; 수신시에는 I암 기저대역신호에 I암 PN부호와 Q암 PN부호를 각각 승산하고, Q암 기저대역신호에 반전된 I암 PN부호와 Q암 PN부호를 각각 승산하는 것을 특징으로 한다.Direct spread / code division multiple access communication system according to the present invention; When transmitting, the I-arm pilot channel data is multiplied by the I-arm pseudo noise (PN) code, the Q-arm pilot channel data is multiplied by the Q-arm PN code, and the multiple I-arm user channel data are inverted Q-arm PN. Multiply the code and multiply the I-arm PN code by a plurality of Q-arm pilot channel data; Upon reception, the I-arm PN code and the Q-arm PN code are multiplied by the I-arm baseband signal, respectively, and the inverted I-arm PN code and the Q-arm PN code are respectively multiplied.
4. 발명의 중요한 용도4. Important uses of the invention
직접확산방식의 부호분할다중접속 통신시스템.Direct Spread Code Division Multiple Access Communication System.
Description
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음Since this is an open matter, no full text was included.
제2도는 파일럿트채널을 이용한 본 발명에 따른 직접확산/부호분할다중 접속 통신시스템의 송신기에 대한 블럭다이아그램.2 is a block diagram of a transmitter in a direct spread / code division multiple access communication system according to the present invention using a pilot channel.
제3도는 파일럿채널을 이용한 본 발명에 따른 직접확산/부호분할다중 접속 통신시스템의 수신기에 대한 블럭다이아그램.3 is a block diagram of a receiver of a direct spread / code division multiple access communication system according to the present invention using a pilot channel.
제4도는 제3도의 데이타복조기의 구성을 상세하게 나타내는 도면.4 is a diagram showing details of the configuration of the data demodulator of FIG.
제5도는 파일럿트채널을 이용한 종래기술 및 본 발명에 따른 직접확산/부호분할다중접속 통신시스템의 송신기에서 처리되는 신호들을 나타내는 도면.5 is a diagram illustrating signals processed in a transmitter of a direct spread / code division multiple access communication system according to the prior art using the pilot channel and the present invention.
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950042989A KR0174617B1 (en) | 1995-11-22 | 1995-11-22 | Data transmitter and receiver in direct spread / code division multiple access communication system |
US09/775,600 US6522687B2 (en) | 1995-11-22 | 2001-02-05 | Data transmitter and receiver of a DS-CDMA communication system |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1019950042989A KR0174617B1 (en) | 1995-11-22 | 1995-11-22 | Data transmitter and receiver in direct spread / code division multiple access communication system |
Publications (2)
Publication Number | Publication Date |
---|---|
KR970031399A true KR970031399A (en) | 1997-06-26 |
KR0174617B1 KR0174617B1 (en) | 1999-04-01 |
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Application Number | Title | Priority Date | Filing Date |
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KR1019950042989A KR0174617B1 (en) | 1995-11-22 | 1995-11-22 | Data transmitter and receiver in direct spread / code division multiple access communication system |
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KR (1) | KR0174617B1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR20010010630A (en) * | 1999-07-21 | 2001-02-15 | 김영환 | Apparatus for recieving intermediate frequency in a mobile communication cell site of code division multi access |
KR100495102B1 (en) * | 1997-12-26 | 2005-10-19 | 주식회사 팬택앤큐리텔 | Intermediate Frequency Forward Processing Unit in Base Station in Wireless Subscriber Network System |
USRE40385E1 (en) | 1997-12-02 | 2008-06-17 | Electronics And Telecom Research Institute | Orthogonal complex spreading method for multichannel and apparatus thereof |
US7586973B2 (en) | 1999-05-31 | 2009-09-08 | Electronics And Telecommunications Research Institute | Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system |
KR100924936B1 (en) * | 1999-10-14 | 2009-11-05 | 퀄컴 인코포레이티드 | Base station beam sweeping method and apparatus using multiple rotating antennas |
KR20140025264A (en) * | 2012-08-22 | 2014-03-04 | 삼성전자주식회사 | Training sequences and channel estimation method for spread spectrum based systems |
-
1995
- 1995-11-22 KR KR1019950042989A patent/KR0174617B1/en not_active IP Right Cessation
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
USRE40385E1 (en) | 1997-12-02 | 2008-06-17 | Electronics And Telecom Research Institute | Orthogonal complex spreading method for multichannel and apparatus thereof |
USRE44507E1 (en) | 1997-12-02 | 2013-09-24 | Electronics And Telecommunications Research Institute | Orthogonal complex spreading method for multichannel and apparatus thereof |
KR100495102B1 (en) * | 1997-12-26 | 2005-10-19 | 주식회사 팬택앤큐리텔 | Intermediate Frequency Forward Processing Unit in Base Station in Wireless Subscriber Network System |
US7586973B2 (en) | 1999-05-31 | 2009-09-08 | Electronics And Telecommunications Research Institute | Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system |
US8090003B2 (en) | 1999-05-31 | 2012-01-03 | Electronics And Telecommunications Research Institute | Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system |
US8121173B2 (en) | 1999-05-31 | 2012-02-21 | Electronics And Telecommunications Research Institute | Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communicating system |
US10305536B2 (en) | 1999-05-31 | 2019-05-28 | Electronics And Telecommunications Research Institute | Apparatus and method for modulating data message by employing orthogonal variable spreading factor (OVSF) codes in mobile communication system |
KR20010010630A (en) * | 1999-07-21 | 2001-02-15 | 김영환 | Apparatus for recieving intermediate frequency in a mobile communication cell site of code division multi access |
KR100924936B1 (en) * | 1999-10-14 | 2009-11-05 | 퀄컴 인코포레이티드 | Base station beam sweeping method and apparatus using multiple rotating antennas |
KR20140025264A (en) * | 2012-08-22 | 2014-03-04 | 삼성전자주식회사 | Training sequences and channel estimation method for spread spectrum based systems |
Also Published As
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---|---|
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