Pulse or digital communications – Transmitters – Antinoise or distortion
Reexamination Certificate
2007-12-21
2010-06-01
Kim, Kevin Y (Department: 2611)
Pulse or digital communications
Transmitters
Antinoise or distortion
Reexamination Certificate
active
07729444
ABSTRACT:
Techniques to process data for transmission in a time division duplexed (TDD) communication system. In one aspect, the frequency response of a forward link is estimated at a base station based on reverse link transmissions (e.g., pilots) from a terminal. Prior to a data transmission on the forward link, the base station determines a reverse transfer function based on the pilots transmitted by the terminal, “calibrates” the reverse transfer function with a calibration function to derive an estimate of a forward transfer function, and preconditions modulation symbols based on weights derived from the forward transfer function. In another aspect, the terminal estimates the “quality” of the forward link and provides this information to the base station. The base station then uses the information to properly code and modulate data prior to transmission such that the transmitted data can be received by the terminal at the desired level of performance.
REFERENCES:
patent: 5056109 (1991-10-01), Gilhousen et al.
patent: 5265119 (1993-11-01), Gilhousen et al.
patent: 5546090 (1996-08-01), Roy, III et al.
patent: 5784363 (1998-07-01), Engstrom et al.
patent: 5799005 (1998-08-01), Soliman
patent: 5828658 (1998-10-01), Ottersten
patent: 5903554 (1999-05-01), Saints
patent: 5933421 (1999-08-01), Alamouti et al.
patent: 5933787 (1999-08-01), Gilhousen et al.
patent: 5982327 (1999-11-01), Vook et al.
patent: 6037898 (2000-03-01), Parish
patent: 6069884 (2000-05-01), Hayashi et al.
patent: 6084929 (2000-07-01), Molnar et al.
patent: 6097972 (2000-08-01), Saints et al.
patent: 6131016 (2000-10-01), Greenstein et al.
patent: 6141567 (2000-10-01), Youssefmir
patent: 6144711 (2000-11-01), Raleigh et al.
patent: 6478422 (2002-11-01), Hansen
patent: 6615024 (2003-09-01), Boros
patent: 6650714 (2003-11-01), Dogan et al.
patent: 6665545 (2003-12-01), Raleigh et al.
patent: 6707808 (2004-03-01), Vedrine
patent: 6771706 (2004-08-01), Ling et al.
patent: 6778612 (2004-08-01), Lozano et al.
patent: 6785341 (2004-08-01), Walton et al.
patent: 6792049 (2004-09-01), Bao et al.
patent: 6850481 (2005-02-01), Wu et al.
patent: 6888809 (2005-05-01), Foschini et al.
patent: 6961388 (2005-11-01), Ling et al.
patent: 7027429 (2006-04-01), Laroia et al.
patent: 7194006 (2007-03-01), Wong et al.
patent: 7200368 (2007-04-01), Hottinen et al.
patent: 2002/0154705 (2002-10-01), Walton et al.
patent: 07-250116 (1995-09-01), None
patent: 11-168453 (1999-06-01), None
patent: 9809381 (1998-03-01), None
patent: 9957820 (1999-11-01), None
patent: 0108369 (2001-02-01), None
Keller, et al. “Sub-Band Adaptive Pre-Equalised OFDM Transmission” 1999 IEEE Vehicular Technology Conference, vol. 1 (50): pp. 334-338 (Sep. 9, 1999).
Munster, et al. “Co-Channel Interference Suppression Assisted Adaptive OFDM in Interference Limited Environments” 1999 IEEE Vehicular Technology Conference, vol. 1 (50): pp. 284-288 (Sep. 9, 1999).
Rohling, et al. “Adaptive Coding and Modulation in an OFDM-TDMA Communication System” 1998 IEEE Vehicular Technology Conference pp. 773-776 (May 18, 1998).
International Search Report—International Search Authority—European Patent Office—PCT/US02/019404 Nov. 14, 2002.
Baccarelli, E. “Evaluation of the reliable data rates supported by multiple-antenna coded wireless links for QAM transmissions” in: Selected Areas in Communications, IEEE Journal on, Feb. 2001, vol. 19, No. 2, pp. 295-304.
Gatreux, S. Driessen, P.f. Greenstein, L.j., “Simulation results for an interference-limited multiple input multiple output cellular system” in: Global Telecommunications Conference, 2000. GLOBECOM'00, IEEE, Dec. 1, 2000, vol. 2, On pp. 1094-1096.
International Preliminary Examination Report—PCT/US2002/019404, International Preliminary Examining Authority/US-Washington, D.C.—Oct. 15, 2003.
F. Ling, “Optimal Reception, Performance Bound, and Cutoff Rate Analysis of References-Assisted Coherent CDMA Communications With Applications”, IEEE Transaction On Communication, pp. 1583-1592 (Oct. 1999).
John A.C. Bingham, “Multicarrier Modulation for Data Transmission: An Idea Whose Time Has Come”, IEEE Communications Magazine, pp. 5-14 (May 1990).
Written Opinion-PCT/US02/019404,IPEA/US-May 12, 2003.
Jalali Ahmad
Smee John Edward
Wallace Mark S.
Franks Ross L.
Kim Kevin Y
QUALCOMM Incorporated
LandOfFree
Method and apparatus for transmitting data in a time... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method and apparatus for transmitting data in a time..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for transmitting data in a time... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4188412