[특허]Synchronous multipoint-to-point CDMA communication system

Synchronous multipoint-to-point CDMA communication system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-013/02 H04L-007/00
출원번호	US-0291648 (1994-08-16)
발명자 / 주소	Giallorenzi Thomas R. (Salt Lake City UT) Rafter Mark T. (Park City UT) Greenwood Kenneth C. (Sandy UT) Press Harry B. (Sandy UT) Kingston Samuel C. (Salt Lake City UT)
출원인 / 주소	Unisys Corporation (Blue Bell PA 02)
인용정보	피인용 횟수 : 113 인용 특허 : 0

초록 ▼

A multipoint-to-point CDMA communication system comprises a plurality of CDMA transmitting stations and a single CDMA receiving station, all of which are intercoupled to each other over one CDMA channel and one feedback channel. On the one CDMA channel, the plurality of CDMA transmitting stations simultaneously send respective CDMA signals to the receiving station. In the receiving station, respective time differences are measured between a reference clock signal and the spreading codes in the CDMA signals from each of the CDMA transmitting stations; and these time differences are indicated in respective error signals which the CDMA receiving station sends on the feedback channel to each of the CDMA transmitting stations. Each CDMA station responds to its error signals by time shifting its spreading code such that it arrives in the receiving station in synchronization with the reference clock signal. This synchronization enables interference between the spreading codes at the receiving station to be reduced by using codes which have minimal cross-correlation when their time difference is zero; and consequently, the maximum number of stations that can simultaneously transmit is increased.

대표청구항 ▼

A synchronous multipoint-to-point CDMA communication system, comprising: a plurality of CDMA transmitting stations and a single CDMA receiving station, all of which are intercoupled to each other over one CDMA channel and one feedback channel; said CDMA transmitting stations each including a respective modulator which modulates data signals with a respective spreading code to generate CDMA signals that are added together on said CDMA channel and sent to said CDMA receiving station; said CDMA receiving station including an error detection circuit which detects respective time differences between a reference clock signal and said spreading codes in said CDMA signals as received at said CDMA receiving station, and an error sending circuit which sends respective error signals that indicate said time differences over said feedback channel to each of said CDMA transmitting stations; and, said CDMA transmitting stations each including a respective error receiver circuit which receives a respective error signal on said feedback channel, and a respective error correction circuit which responds to the received error signal by time shifting said CDMA signals to said CDMA channel such that said spreading code in said CDMA signals arrive at said receiving station in synchronization with said reference clock signal.

이 특허를 인용한 특허 (113)

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Dapper, Mark J.; Geile, Michael J.; Hill, Terrance J.; Roberts, Harold A.; Anderson, Brian D.; Brede, Jeffrey; Wadman, Mark S.; Kirscht, Robert J.; Herrmann, James J.; Fort, Michael J.; Buska, Steven P; Solum, Jeff; Enfield, Debra Lea; Berg, Darrell; Smigelski, Thomas; Tucker, Thomas C; Hall, Joe; Logajan, John M.; Boualouang, Somvay; Lou, Heng; Elpers, Mark; Downs, Matt; Ferris, Tammy; Opoczynski, Adam; Russell, David S; Nelson, Calvin G; Samant, Niranjan R; Chiappetta, Joseph F; Sarnikowski, Scott, Systems and method for orthogonal frequency divisional multiplexing.
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Dapper, Mark J.; Geile, Michael J.; Hill, Terrance J.; Roberts, Harold A.; Anderson, Brian D.; Brede, Jeffrey; Wadman, Mark S.; Kirscht, Robert J.; Herrmann, James J.; Fort, Michael J.; Buska, Steven P; Solum, Jeff; Enfield, Debra Lea; Berg, Darrell; Smigelski, Thomas; Tucker, Thomas C; Hall, Joe; Logajan, John M.; Boualouang, Somvay; Lou, Heng; Elpers, Mark; Downs, Matt; Ferris, Tammy; Opoczynski, Adam; Russell, David S; Nelson, Calvin G; Samant, Niranjan R; Chiappetta, Joseph F; Sarnikowski, Scott, Systems and method for orthogonal frequency divisional multiplexing.
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Dapper, Mark J.; Geile, Michael J.; Hill, Terrance J.; Roberts, Harold A.; Anderson, Brian D.; Brede, Jeffrey; Wadman, Mark S.; Kirscht, Robert J.; Herrmann, James J.; Fort, Michael J.; Buska, Steven P; Solum, Jeff; Enfield, Debra Lea; Berg, Darrell; Smigelski, Thomas; Tucker, Thomas C; Hall, Joe; Logajan, John M.; Boualouang, Somvay; Lou, Heng; Elpers, Mark; Downs, Matt; Ferris, Tammy; Opoczynski, Adam; Russell, David S; Nelson, Calvin G; Samant, Niranjan R; Chiappetta, Joseph F; Sarnikowski, Scott, Systems and method for orthogonal frequency divisional multiplexing.
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Geile, Michael J., Systems and method for orthogonal frequency divisional multiplexing.
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Geile, Michael J., Systems and method for orthogonal frequency divisional multiplexing.
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Geile, Michael J.; Roberts, Harold A.; Anderson, Brian D.; Brede, Jeffrey; Fort, Michael J.; Ferris, Tammy, Systems and method for orthogonal frequency divisional multiplexing.
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Geile, Michael J.; Roberts, Harold A.; Anderson, Brian D.; Brede, Jeffrey; Fort, Michael J.; Ferris, Tammy, Systems and method for orthogonal frequency divisional multiplexing.
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Geile, Michael J.; Roberts, Harold A.; Brede, Jeffrey, Systems and method for orthogonal frequency divisional multiplexing.
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Dapper, Mark J.; Geile, Michael J.; Hill, Terrance J.; Roberts, Harold A.; Anderson, Brian D.; Brede, Jeffrey; Wadman, Mark S.; Kirscht, Robert J.; Herrmann, James J.; Fort, Michael J.; Buska, Steven P.; Solum, Jeff; Enfield, Debra Lea; Berg, Darrell; Smigelski, Thomas; Tucker, Thomas C.; Hall, Joe; Logajan, John M.; Boualouang, Somvay; Lou, Heng; Elpers, Mark D.; Downs, Matt; Ferris, Tammy; Opoczynski, Adam; Russell, David S.; Nelson, Calvin G.; Samant, Niranjan R.; Chiappetta, Joseph F.; Sarnikowski, Scott, Systems and methods for orthogonal frequency division multiplexing.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Synchronous multipoint-to-point CDMA communication system 원문보기

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Synchronous multipoint-to-point CDMA communication system 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (113)

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