Pulse or digital communications – Transceivers – Modems
Reexamination Certificate
2005-03-15
2005-03-15
Booure, Tesfaldet (Department: 2631)
Pulse or digital communications
Transceivers
Modems
Reexamination Certificate
active
06868118
ABSTRACT:
A discrete multi-tone (DMT) processor receives predetermined control signals from a digital signal processor (DSP) within an asymmetric digital subscriber line (ADSL) modem, modulates transmission data in response to the control signals, and demodulates reception data. The DMT processor includes a frame synchronization signal generator, a transmitter, and a receiver. The frame synchronization generator generates a transmission frame synchronization signal and a reception frame synchronization signal in response to a cyclic prefix contained in the transmission data or reception data and a reception synchronization shift signal applied from the DSP. The transmitter DMT modulates and gain-controls the transmission data input in response to the transmission frame synchronization signal The receiver gain-controls and DMT demodulates the reception data response to the reception frame synchronization.
REFERENCES:
patent: 5625651 (1997-04-01), Cioffi
patent: 5751741 (1998-05-01), Voith et al.
patent: 6208637 (2001-03-01), Eames
patent: 6272209 (2001-08-01), Bridger et al.
patent: 6377683 (2002-04-01), Dobson et al.
patent: 6721356 (2004-04-01), Cole et al.
Wu, et al., “A Fast Algorithm for Reduced-Complexity Programmable DSP Implementation of the IFFT/FFT in DMT Systems”, Globecom 98 vol. 2, p.p. 833-838 (Nov. 8-12, 1998).
Booure Tesfaldet
Mills & Onello LLP
Samsung Electronics Co,. Ltd.
Tran Khanh Cong
LandOfFree
Discrete multi-tone processor in asymmetric digital... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Discrete multi-tone processor in asymmetric digital..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Discrete multi-tone processor in asymmetric digital... will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3418543