Pulse or digital communications – Synchronizers – Phase displacement – slip or jitter correction
Reexamination Certificate
2007-04-13
2011-12-20
Payne, David C. (Department: 2611)
Pulse or digital communications
Synchronizers
Phase displacement, slip or jitter correction
C375S346000
Reexamination Certificate
active
08081728
ABSTRACT:
A method of phase correction at a wireless device includes: estimating a phase slope for an OFDM symbol in a data portion of a packet based on an elapsed time from the start of the packet; measuring a residual phase slope from tracking pilots for the OFDM symbol in the data portion of the packet; and adjusting a phase correction based upon the phase slope and the residual phase slope. Apparatus in a wireless device performs the method and machine-readable media carry instructions for carrying out the method.
REFERENCES:
patent: 2002/0065047 (2002-05-01), Moose
patent: 2009/0073869 (2009-03-01), Chadha et al.
patent: 1363435 (2003-11-01), None
patent: 2001053712 (2001-02-01), None
patent: 2002314506 (2002-10-01), None
patent: 2004104744 (2004-04-01), None
patent: 2004260423 (2004-09-01), None
patent: 2004356923 (2004-12-01), None
patent: WO2005036846 (2005-04-01), None
Troya, A. et al.: “Simplified Residual Phase Correction Mechanism for the IEEE 802.11a Standard.” Vehicular Technology Conference, 2003. VTC 2003-Fall 2003 IEEE 58th Orlando, FL, USA, Oct. 6-9, 2003, Piscataway, NJ, USA, IEEE, Oct. 6, 2003, pp. 1137-1141, vol. 2, XP010700809, ISBN: 0-7803-7954-3.
Onizawa, T. et al.: “A New Synchronization Scheme for Packet Mode OFDM-SDM Signals in Wireless LAN,” Vehicular Technology Conference, 2005. VTC-2005-Fall. 2005 IEEE 62nd, [Online] vol. 2, Sep. 25, 2005, pp. 1021-1025, XP002448089, ISSN: 1090-3038, ISBN: 0-7803-9152-7; Retrieved from the Internet: URL: http://ieeexplore.ieee.org/ie15/10422/33097/01558080.pdf?tp=&arnumber=1558080&isnumber=33097> [retrieved Aug. 28, 2007].
International Search Report, PCT/US2007/066617—International Search Authority—European Patent Office—Sep. 11, 2007.
Written Opinion, PCT/US2007/066617—International Search Authority—European Patent Office—Sep. 11, 2007.
International Preliminary Report on Patentability, PCT/US2007/066617—International Preliminary Examining Authority—European Patent Office—Apr. 25, 2008.
Howard Steven J.
Medvedev Irena
Monsen Peter
Wallace Mark S.
Walton Jay Rodney
Milikovsky Dimitry R.
Panwalkar Vineeta
Payne David C.
QUALCOMM Incorporated
QUALCOMM Patent Group
LandOfFree
Method and apparatus for clock correction in MIMO OFDM 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 clock correction in MIMO OFDM, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for clock correction in MIMO OFDM will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4297305