Pulse or digital communications – Transceivers
Reexamination Certificate
2006-02-14
2006-02-14
Tse, Young T. (Department: 2637)
Pulse or digital communications
Transceivers
C375S263000, C370S208000, C370S210000
Reexamination Certificate
active
06999503
ABSTRACT:
The system includes a transmitter for generating a signal and a cyclic prefix, wherein the transmitter suppresses a plurality of sub-symbols of the signal to produce a partial response signal. A portion of the partial response signal is dropped and the resulting truncated signal is used to modulate a carrier signal. The carrier signal is transmitted to the receiver through a noisy channel. The receiver receives a noisy signal and recovers the carrier signal and, hence, the partial response signal from the noisy signal. The method includes selecting a cyclic convolver having predefined values, applying the cyclic convolver to a signal to produce a partial response signal, dropping a plurality of sub-symbols of the partial response signal, appending a cyclic prefix at a leading edge of the truncated partial response signal, and transforming the truncated partial response signal with the cyclic prefix to produce a time base signal that is used to generate a modulated carrier signal that is ready for transmission.
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Boisbrun Glenn
Dana Jubin
Nokia Mobile Phones Ltd.
Shaw Steven A.
Tse Young T.
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