Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-04-11
2006-04-11
Phu, Phuong (Department: 2631)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S147000, C375S140000, C375S130000
Reexamination Certificate
active
07027493
ABSTRACT:
A system and a method for medium wide band communications using impulse radio techniques. The method of transmitting medium wide band signals includes the steps of producing a sinusoidal signal and a train of preferably Gaussian shaped pulses. The method also includes the steps of multiplying the sinusoidal signal by the train of pulses to produce a train of sinusoidal bursts, and transmitting the train of sinusoidal bursts. The center frequency of the transmitted signal consisting of the train of sinusoidal bursts can be controlled by selecting an appropriate frequency of the sinusoidal signal. The bandwidth of the transmitted signal can be controlled by selecting an appropriate width of the pulses in the train of pulses. Information and/or coding modulation can be accomplished by adjusting the time position and/or phase of the sinusoidal bursts.
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Babayi Robert S.
Phu Phuong
Time Domain Corporation
Venable LLP
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