Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-10-10
2008-10-28
Ha, Dac V. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S261000, C375S285000, C375S347000, C370S483000
Reexamination Certificate
active
07443919
ABSTRACT:
In various embodiments, techniques are provided to determine channel characteristics of various communication systems such as OFDM systems or systems using a plurality of transmit antennas by using various sets of training symbols.
REFERENCES:
patent: 5537443 (1996-07-01), Yoshino et al.
patent: 5867478 (1999-02-01), Baum et al.
patent: 6002716 (1999-12-01), Meyer et al.
patent: 6026130 (2000-02-01), Rahmatullah et al.
patent: 6134215 (2000-10-01), Agrawal et al.
patent: 6272168 (2001-08-01), Lomp et al.
patent: 6298035 (2001-10-01), Heiskala
patent: 6377636 (2002-04-01), Paulraj et al.
patent: 6421327 (2002-07-01), Lundby et al.
patent: 6463107 (2002-10-01), Lindoff et al.
patent: 6473393 (2002-10-01), Ariyavisitakul et al.
patent: 6515978 (2003-02-01), Buehrer et al.
patent: 6611551 (2003-08-01), Jones et al.
patent: 6842442 (2005-01-01), Okawa et al.
patent: 6870858 (2005-03-01), Sebire
patent: 6885693 (2005-04-01), Burton
patent: 6891815 (2005-05-01), Song
patent: 6947476 (2005-09-01), Song
patent: 7103115 (2006-09-01), Li
patent: 2001/0021236 (2001-09-01), Song
patent: 2002/0009065 (2002-01-01), Molko
patent: 2002/0036998 (2002-03-01), Lomp
patent: 2002/0051482 (2002-05-01), Lomp
patent: 2002/0141478 (2002-10-01), Ozluturk et al.
patent: H07-111495 (1995-04-01), None
patent: H09-200178 (1997-07-01), None
patent: 2001-28559 (2001-01-01), None
Li, Y., “Optimum Training Sequences for OFDM Systems with Multiple Transmit Antennas,” Globecom'00, IEEE Globasl Telelcommunication Conference, vol. 3 of 3, Nov. 27, 2000.
Li, et al., “Channel Estimation of OFDM Systems with Transmitter Diversity in Mobile Wireless Channels,” IEEE Journal on Selected Areas in Communications, vol. 17, No. 3, Mar. 1999, 461.
European Search Report dated Dec. 6, 2004 for corresponding European Patent Application No. 02253493.7.
Van Zelst, A., et al., “Space Division Multiplexing (SDM) for OFSM System”, IEEE Vehicular Technologu Conference Proceedings 2000, May 2000, vol. 2, pp. 1070-1074.
Inoue, Yuji et al., “A New Space Division Multiplexing For OFDM Signals”, Proceedings of the 1998 IEICE General Conference, Japan, IEICE, Mar. 6, 1998, Communication 1, p. 378.
Wikipedia, Orthogonal Grequency Division Multiplexing, Characteristics, found Jan. 9, 2003, http://en.wikipedia.org/wiki/OFDM.
AT&T Corp.
Ha Dac V.
LandOfFree
Channel estimation for wireless systems with multiple... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Channel estimation for wireless systems with multiple..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Channel estimation for wireless systems with multiple... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3997008