Pulse or digital communications – Transceivers
Reexamination Certificate
2005-03-29
2005-03-29
Ghebretinsae, Temesghen (Department: 2637)
Pulse or digital communications
Transceivers
C375S296000, C370S465000, C370S538000
Reexamination Certificate
active
06873650
ABSTRACT:
A circuit compensating for the difference in transmission rate of digital samples generated in transmit and receive paths between a user and a transceiver processing in the frequency domain, such as a digital multi-tone (DMT) transceiver. Compensation of the DMT transmission rate in the receive path in accordance with exemplary embodiments of the present employs zero-padding of the frequency domain coefficients generated by the DMT transceiver prior to applying an inverse transform, such as the inverse fast Fourier transform (IFFT). Zero-padding the frequency domain coefficients allows for the compensation of the transmission rate in the receive path by generating digital samples from the frequency domain coefficients with an inverse transform having a rate matched to the frequency domain transform and rate employed in the transmit path.
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Banerjea Raja
Barazesh Bahman
El-Kik Tony S.
Rajamani Kannan
Agere Systems Inc.
Ghebretinsae Temesghen
Ghulamali Qutub
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