Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2004-09-08
2008-11-11
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S355000
Reexamination Certificate
active
07450651
ABSTRACT:
Multi-carrier transmission system comprises transmitter including acquisition unit configured to acquire 2m(m: a natural number) modulated signals including no-information signals which are failed to be used for information transmission and 2n(n: a natural number, n<m) signals, acquisition unit subjecting modulated signals to inverse discrete Fourier transform to obtain transformed signals, no-information signal included in Lthmodulated signal of modulated signals being used as first no-information signal of no-information signals, every Kthmodulated signal of modulated signals that is counted from first no-information signal being used as no-information signal (K: a natural number, L: an integer, K=2m−n, 0≦L≦K−1), and transmission unit configured to transmit transformed signals, and receiver including receiving unit configured to receive the transformed signals, and detection unit configured to detect synchronization timing based on at least one no-information signal included in the transformed signals.
REFERENCES:
patent: 4601045 (1986-07-01), Lubarsky
patent: 6028900 (2000-02-01), Taura et al.
patent: 6876675 (2005-04-01), Jones et al.
patent: 2003/0072397 (2003-04-01), Kim et al.
patent: 2003/0232601 (2003-12-01), Uno
patent: 2004/0057502 (2004-03-01), Azenkot et al.
patent: 2004/0109515 (2004-06-01), Krauss et al.
patent: 2002-232387 (2002-08-01), None
patent: 2003-46473 (2003-02-01), None
Athanasios Papoulis, “A New Algorithm in Spectral Analysis and Band-Limited Extrapolation”, IEEE Transactions on Circuits and Systems, vol. CAS-22, No. 9, Sep. 1975, pp. 735-742.
Satoshi Kawata et al., “Iterative Image Restoration for Linearly Degraded Images”, J. Opt. Soc. Am., vol. 70, No. 7, Jul. 1980, pp. 762-768.
Huang David
Kabushiki Kaisha Toshiba
Liu Shuwang
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
LandOfFree
Multi-carrier transmission 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 Multi-carrier transmission system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Multi-carrier transmission system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4040698