Pulse or digital communications – Receivers
Reexamination Certificate
2011-06-28
2011-06-28
Bocure, Tesfaldet (Department: 2611)
Pulse or digital communications
Receivers
C375S346000, C375S350000
Reexamination Certificate
active
07970078
ABSTRACT:
A receiver and associated method estimates a channel impulse response of the communications signal. A communications signal is received as a burst of transmitted symbols, including a known training sequence. The joint estimation of timing offset and initial channel impulse response is determined based on the cross-correlations of the known transmitted symbols and received communications signal. A constant modulus interference removal iteration is applied to improve the initial channel impulse estimation.
REFERENCES:
patent: 5164961 (1992-11-01), Gudmundson
patent: 5363412 (1994-11-01), Love et al.
patent: 6393068 (2002-05-01), Rupp
patent: 6570917 (2003-05-01), Lai et al.
patent: 6584150 (2003-06-01), Wu et al.
patent: 6650716 (2003-11-01), Ratnarajah
patent: 6714607 (2004-03-01), Kobylinski et al.
patent: 6931030 (2005-08-01), Dogan
patent: 7006811 (2006-02-01), Pukkila
patent: 7012966 (2006-03-01), Li
patent: 7342972 (2008-03-01), Giannakis et al.
patent: 2003/0021332 (2003-01-01), Li
patent: 2003/0043887 (2003-03-01), Hudson
patent: 2003/0210741 (2003-11-01), Fimoff et al.
patent: 2004/0127260 (2004-07-01), Boros et al.
patent: 2004/0170234 (2004-09-01), Pukkila et al.
patent: 2004/0171364 (2004-09-01), Pukkila
patent: 2004/0184568 (2004-09-01), Kobylinski et al.
patent: 2004/0192215 (2004-09-01), Onggosanusi et al.
patent: 2004/0240595 (2004-12-01), Raphaeli
patent: 2005/0111538 (2005-05-01), Wernaers
patent: 2005/0152485 (2005-07-01), Pukkila et al.
patent: 2006/0034380 (2006-02-01), Li
patent: 2006/0062333 (2006-03-01), Yan
patent: 2007/0173277 (2007-07-01), Yun
patent: 2009/0052561 (2009-02-01), Baxley et al.
patent: 2552443 (1996-02-01), None
patent: 2273377 (1999-12-01), None
patent: 1843533 (2004-12-01), None
Pukkila et al., “Cochannel Interference Suppression for Constant Modulus Signals,” IEEE Communications Society, 2004, pp. 2548-2552.
Yongjun Deng, et al., “Robjust LMMSE Turbo Equalization Algorithm to Imperfect Channel Estimations,” Vehiclular Technology Conference, IEEE, Sep. 25, 2005, pp. 1402-1406.
Sezginer et al., “An Improved Matched Filter Based Symbol Synchronizer for MSK Transmission Over Fading Multipath Channel, ”Vehicular Technology Conference, IEEE Sep. 26, 2004, pp. 1678-1682.
Ali A. Nasir, “Modified Constant Modulus Algorithm for Joint Blind Equalization and Synchronization,” IEEE, 59-64.
Kemenczy Zoltan
Simmons Sean
Wu Huan
Allen Dyer Doppelt Milbrath & Gilchrist, P.A.
Bocure Tesfaldet
Research In Motion Limited
LandOfFree
Method and receiver for estimating the channel impulse... 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 receiver for estimating the channel impulse..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and receiver for estimating the channel impulse... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2667968