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Orthogonal frequency division multiplex systems 원문보기

IPC분류정보
국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판)
  • H04L-005/26
  • H04L-025/08
  • H04L-027/26
출원번호 US-0877160 (1997-06-17)
우선권정보 SE-0002402 (1996-06-18)
발명자 / 주소
  • Wahlqvist Mattias,SEX
  • Larsson Roger,SEX
  • Ostberg Christer,SEX
출원인 / 주소
  • Telia Research AB, SEX
대리인 / 주소
    Oblon, Spivak, McClelland, Maier & Neustadt, P.C.
인용정보 피인용 횟수 : 25  인용 특허 : 6

초록

A method and apparatus increase a maximum available bit rate on a single data link, in order to gain capacity within single cells. An orthogonal frequency division multiplex signal is filtered by a pulse shaping operation so as to suppress side lobes of the signal. This pulse shaping introduces know

대표청구항

[ What is claimed as new and is desired to be secured by Letters Patent of the United States is:] [1.] An OFDM system comprising:a transmitter configured to transmit an orthogonal frequency division multiplexing (OFDM) signal in which side lobes of said signal are suppressed by a pulse shaping opera

이 특허에 인용된 특허 (6)

  1. Greenberg A. Frederick (New York NY) Hatcher G. Stephen (Renton WA) Gu Goson (Seattle WA), Apparatus and method for optimal frequency planning in frequency division multiplexing transmissions.
  2. Koppelaar Arie G. C. (Eindhoven NLX) Baggen Constant P. M. J. (Eindhoven NLX), Method of transmitting a data stream, transmitter and receiver.
  3. Mallory Mark P. (Salt Lake City UT), Modulation method and apparatus for multicarrier data transmission.
  4. Brajal Americo (Villeneuve le Roi FRX) Chouly Antoine (Paris FRX), Multicarrier frequency hopping communications system.
  5. Gudmundson Perols Leif Mikael,SEX ; Brismark Lars Gustav,SEX ; Anderson Per-Olof,SEX, Pulse shaping for data transmission in an orthogonal frequency division multiplexed system.
  6. Fouche Yvon (Chatenay Malabry FRX) Elleaume Philippe (Antony FRX) de Couasnon Tristan (Betton FRX) Travert Serge (Cesson Sevigne FRX) Monnier Raoul (Rennes FRX) Hergault Stephane (Cesson Sevigne FRX), Transmitter, transmission method and receiver.

이 특허를 인용한 특허 (25)

  1. Feher,Kamilo, Agile RF band OFDM spread spectrum and cross-correlated systems.
  2. Feher,Kamilo, Antenna systems, receivers and demodulators for cross-correlated and other signals.
  3. Hadad,Zion, Bi-directional communication channel.
  4. Feher,Kamilo, Demodulation of multiple signals.
  5. Cranford, Jr.,Hayden C.; Ficken,Westerfield J.; Liu,Wentai, Equalizer for reduced intersymbol interference via partial clock switching.
  6. Gerakoulis, Diakoumis, Interference suppressing OFDM system for wireless communications.
  7. Gerakoulis, Diakoumis, Interference suppressing OFDM system for wireless communications.
  8. Gerakoulis, Diakoumis, Interference suppressing OFDM system for wireless communications.
  9. Gerakoulis, Diakoumis, Interference suppressing OFDM system for wireless communications.
  10. Gerakoulis, Diakoumis Parissis, Interference suppressing OFDM system for wireless communications.
  11. Gerakoulis,Diakoumis, Interference suppressing OFDM system for wireless communications.
  12. Sehitoglu,Hasan, Matrix-valued methods and apparatus for signal processing.
  13. Kannan,Anand; Kadous,Tamer, Method and apparatus for error reduction in an orthogonal modulation system.
  14. Bolinth, Edgar; Lorenz, Gesa, Method and transmission device for transmission of data in a multi-carrier system.
  15. Kao,Yung An; Hsiao,Chang Lung; Chiu,Po Lin; Lee,Shih Kai, Method of equalization in an OFDM system.
  16. Feher, Kamilo, Methods and systems for transmission of multiple modulated signals over wireless networks.
  17. James J. Hornsby ; Kris Kelkar, Modulation methods and structures for wireless communication systems and transceivers.
  18. Tsai, Chang-Lan; Hsiao, Chang-Lung; Chen, Ren-Jr; Chung, Char-Dir, Orthogonal frequency division multiplexing (OFDM) encoding and decoding methods and systems.
  19. Guvenkaya, Ertugrul; Arslan, Huseyin, Orthogonal frequency division multiplexing (OFDM) transmitter and receiver windowing for adjacent channel interference (ACI) suppression and rejection.
  20. Kuwabara, Masahiro; Sawada, Manabu, Orthogonal frequency division multiplexing receiver device.
  21. Feher,Kamilo, Receivers and demodulators for TDMA and other modulated systems.
  22. Arnesen,David M., Sliding-window transform with integrated windowing.
  23. Olafsson, Sverrir; Henderson, P. Michael, Slotted synchronous frequency division multiplexing for multi-drop networks.
  24. Chini,Ahmad; Alavi,Hossein; Movahedin,Mohammad Reza, System and method of signal wave shaping for spectrum control of an OFDM signal.
  25. Eiger, Tuvia; Berchin, Uriel, Wireless multimedia system.
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