[특허]Maximizing data rate by adjusting codes and code rates

[미국특허] Maximizing data rate by adjusting codes and code rates 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04L-027/06
출원번호	US-0633970 (2006-12-05)
등록번호	US-7502424 (2009-03-10)
발명자 / 주소	Hoffmann,John E. Nelson, Jr.,George Rodney Riley,Daniel I. Rouphael,Antoine J. Proctor, Jr.,James A.
출원인 / 주소	IPR Licensing, Inc.
대리인 / 주소	Volpe and Koenig, P.C.
인용정보	피인용 횟수 : 0 인용 특허 : 32

초록 ▼

The present invention provides for making code rate adjustments and modulation type adjustments in a pseudonoise (PN) encoded CDMA system. Coding rate adjustments may be made by changing the number of information bits per symbol, or Forward Error Code (FEC) coding rate. A forward error correction (FEC) block size is maintained at a constant amount. Therefore, as the number of information bits per symbol are increased, an integer multiple of bits per epoch is always maintained. The scheme permits for a greater flexibility and selection of effective data rates providing information bit rates ranging from, for example, approximately 50 kilobits per second to over 5 mega bits per second (Mbps) in one preferred embodiment.

대표청구항 ▼

What is claimed is: 1. A mobile unit for receiving variable data rate communications in a communication system, the mobile unit comprising: a receiver configured to receive a modulated signal and to receive forward error correction (FEC) rate data; a symbol demodulator configured to generate a plurality of demodulated symbols from the modulated signal; a block assembler configured to group the plurality of demodulated symbols according to a predetermined FEC block size; a protocol converter configured to apply an inverse FEC coding process to decode the bits of the blocks into a plurality of FEC decoded bits based on the received FEC rate data; and a segment disassembler configured to format the plurality of FEC decoded bits into a plurality of formatted frames. 2. The mobile unit of claim 1, wherein the receiver is further configured to receive the modulated signal over a plurality of allocated sub-channels. 3. The mobile unit claim 2, further comprising: a multiplexer configured to reconstruct the transmission received over a plurality of allocated sub-channels into a signal. 4. The mobile unit of claim 1, wherein the symbol modulating is selected from a group consisting of Quadrature Phase Keyed (QPSK), eight level Phase Shift Key (PSK), sixteen level Quadrature Amplitude Modulation (16 QAM) and 64 QAM. 5. The mobile unit of claim 1, wherein the number of FEC symbols per block is selected from the group consisting of 2, 3, 4, and 6 bits per symbol. 6. A method of receiving variable data rate communications in mobile unit, the method comprising: receiving a modulated signal; receiving forward error correction (FEC) rate data; demodulating the modulated signal to generate a plurality of demodulated symbols; grouping the plurality of demodulated symbols according to a predetermined FEC block size; applying an inverse FEC coding process for decoding the bits of the blocks into a plurality of FEC decoded bits based on the received FEC rate data; and formatting the plurality of FEC decoded bits into a plurality of formatted frames. 7. The method of claim 6, further comprising receiving the modulated signal over a plurality of allocated sub-channels. 8. The method of claim 6, further comprising reconstructing the transmission received over a plurality of allocated sub-channels into a signal. 9. The method of claim 6, further comprising receiving a modulated symbol from a group consisting of Quadrature Phase Keyed (QPSK), eight level Phase Shift Key (PSK), sixteen level Quadrature Amplitude Modulation (16 QAM) and 64 QAM. 10. The method of claim 6, further comprising receiving data with a number of FEC symbols per block from a group consisting of 2, 3, 4, and 6 bits per symbol.

이 특허에 인용된 특허 (32) 인용/피인용 타임라인 분석

Rhee Dojun ; Souvanthong Chanthachith,FRX, 64/256 quadrature amplitude modulation trellis coded modulation decoder.
상세보기
Guha Aloke (Minneapolis MN), Adaptive forward error correction system and method.
상세보기
Davidson Grant A. (Oakland CA), Adaptive-block-length, adaptive-transforn, and adaptive-window transform coder, decoder, and encoder/decoder for high-qu.
상세보기
Kim Kap S. (Gaithersburg MD) Tisdale William R. H. (Baltimore MD) Andrews Bruce S. (Rockville MD) Nash T. Randolph (Rockville MD) Kolodgie Kathleen J. (Rockville MD) Eiserike Steven S. (Rockville MD), All digital IDMA dynamic channel allocated satellite communications system and method.
상세보기
Dillon Douglas (Gaithersberg MD), Apparatus and method for controlling forward error correction encoding in a very small aperture terminal.
상세보기
Walker Gordon K. (Escondido CA) Moroney Paul (Olivenhain CA), Automatic adjustment of receiver apparatus based on channel-bit-error-rate-affected parameter measurement.
상세보기
Taipale Dana John, CDMA communications system having a searcher receiver and method therefor.
상세보기
West Barry G. (Chelmsford GBX) Sosin Boleslaw M. (Chelmsford GBX) Tolfree Roger K. (Witham GBX), Communication system.
상세보기
Sato Hiroaki (Chouhu JPX) Yamagishi Katsumi (Hino JPX), Data communication system, apparatus and method which optimize the set value of parameters.
상세보기
Guy M. A. F. Duxbury CA, Data error correction system.
상세보기
Nigrin,Jan; Polasek,Martin, Diversity communication system and method of operation thereof.
상세보기
West Barry G. (Chelmsford GBX) Sosin Boleslaw M. (Chelmsford GBX) Tolfree Roger K. (Witham GBX), Dynamic frame length communication system.
상세보기
Amalfitano Carlo, Dynamic frame size adjustment and selective reject on a multi-link channel to improve effective throughput and bit error rate.
상세보기
Kant Krishna (Township of Marlboro ; Monmouth County NJ), Error monitoring algorithm for broadband signaling.
상세보기
Weerackody Vijitha ; Zeng William Glenn, Fast fading packet diversity transmission method and system.
상세보기
Tanaka Hirokazu,JPX ; Saito Tatsunori,JPX, Information communication system using multi-code CDMA mode.
상세보기
Hoffmann,John E.; Nelson, Jr.,George Rodney; Riley,Daniel I.; Rouphael,Antoine J.; Proctor, Jr.,James A., Maximizing data rate by adjusting codes and code rates in CDMA system.
상세보기
Paik, Woo H.; Lery, Scott A.; Heegard, Chris; Krause, Edward A.; Heller, Jerrold A., Method and apparatus for communicating digital information such as compressed video using treillis coded QAM.
상세보기
Hang Hsueh-Ming (Howell NJ), Method and apparatus for dynamic channel bandwidth allocation among multiple parallel video coders.
상세보기
Curry ; Jr. James C. (Lexington SC), Method and apparatus for dynamic data block length adjustment.
상세보기
Ward Torbjorn (Montreal CAX), Method and apparatus for dynamically selecting the length of mobile station burst communications on the reverse digital.
상세보기
Wadzinske Paul E. ; Feeney Gregory A. ; Newberg Donald G., Method and apparatus for providing information between communication devices.
상세보기
Zehavi Ephraim,ILX ; Miller David S. ; LaRocca Judith, Method and apparatus for providing variable rate data in a communications system using non-orthogonal overflow channels.
상세보기
Hasegawa Makoto (Tokyo JPX) Mimura Masahiro (Tokyo JPX) Hirabayashi Hirohide (Yokohama JPX) Adachi Naoki (Kawasaki JPX) Namura Yasuaki (Yokohama JPX) Sakai Hideko (Yokohama JPX), Mobile unit identifying system and method of demodulating for the same.
상세보기
Zscheile ; Jr. John W. (West-Farmington UT) Wilson Michael L. (Salt Lake City UT) Saggio Richard J. (Salt Lake City UT) Lundquist Alan E. (Salt Lake City UT), Multiple channel quadrature communication system and method.
상세보기
Gutleber Frank S. (Little Silver NJ), Orthogonal CDMA system utilizing direct sequence pseudo noise codes.
상세보기
Ramesh Nallepilli S., Orthogonal modulation scheme.
상세보기
Gorsuch Thomas E. ; Amalfitano Carlo, Protocol conversion and bandwidth reduction technique providing multiple nB+D ISDN basic rate interface links over a wireless code division multiple access communication system.
상세보기
Ujiie Mikio (Tokyo), Satellite communications system operating in asynchronous mode for central-to-terminal station transmission.
상세보기
Gilhousen Klein S. (San Diego CA) Jacobs Irwin M. (La Jolla CA) Padovani Roberto (San Diego CA) Weaver ; Jr. Lindsay A. (San Diego CA) Wheatley ; III Charles E. (Del Mar CA) Viterbi Andrew J. (La Jol, System and method for generating signal waveforms in a CDMA cellular telephone system.
상세보기
Kumar Derek D., System and method for multiplexing a spread spectrum communication system.
상세보기
Kolze Thomas J. ; Anderson Steven E. ; Hou Victor T., Variable length burst transmission over the physical layer of a multilayer transmission format.
상세보기

활용도 분석정보

상세보기

다운로드

내보내기

활용도 Top5 특허

해당 특허가 속한 카테고리에서 활용도가 높은 상위 5개 콘텐츠를 보여줍니다.
더보기 버튼을 클릭하시면 더 많은 관련자료를 살펴볼 수 있습니다.

내보내기 메뉴

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

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

AI-Helper ※ AI-Helper는 을 사용합니다.

AI-Helper

안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

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

연합인증

[미국특허] Maximizing data rate by adjusting codes and code rates 원문보기