Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2008-01-29
2008-01-29
Tran, Khanh C. (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
07324600
ABSTRACT:
A method and a stage for estimating channel coefficients in a multi carrier system operating in accordance with a block-code based transmit diversity scheme, in which a data content of a code matrix is multiplexed in a frequency domain are described. The method comprises determining a phase ramp in the frequency domain or an equivalent thereof in the time domain, the phase ramp or the equivalent thereof being comprised within a receive signal after timing synchronization, processing the receive signal to remove the phase ramp or the equivalent thereof and estimating the channel coefficients on the basis of the processed receive signal.
REFERENCES:
patent: 5539730 (1996-07-01), Dent
patent: 6088408 (2000-07-01), Calderbank et al.
patent: 6389087 (2002-05-01), Heinonen et al.
patent: 6891897 (2005-05-01), Bevan et al.
patent: 6983127 (2006-01-01), Da Torre et al.
patent: 7009932 (2006-03-01), Matheus et al.
patent: 7027530 (2006-04-01), McFarland et al.
patent: 7031419 (2006-04-01), Piirainen
patent: 0 453 203 (1991-10-01), None
patent: WO 98/19410 (1998-05-01), None
patent: WO 01/56239 (2001-08-01), None
Lee et al, “A space-frequency transmitter diversity technique for OFDM systems”, Proceedings of IEEE Global Telecommunications Conference, vol. 3 of 3, Nov. 27, 2000-Dec. 1, 2000, pp. 1474-1475.
Li et al, “Transmitter Diversity for OFDM Systems and Its Impact on High-Rate Data Wireless Networks”, IEEE Journal on Selected Areas in Communications, IEEE Inc., vol. 17, No. 7, Jul. 1999, pp. 1233-1243.
Pauli Mathias
Wachsmann Udo
Nixon & Vanderhye P.C.
Telefonaktiebolaget LM Ericsson (publ)
Tran Khanh C.
LandOfFree
Channel estimation in a multi carrier transmit diversity system 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 in a multi carrier transmit diversity system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Channel estimation in a multi carrier transmit diversity system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2778834