Randomly changing pulse polarity and phase in an UWB signal...

Details Randomly changing pulse polarity and phase in an UWB signal... Randomly changing pulse polarity and phase in an UWB signal...

2007-11-20

2007-11-20

Bayard, Emmanuel (Department: 2611)

Pulse or digital communications

Transmitters

Reexamination Certificate

active

11079305

ABSTRACT:
A method and system eliminate spectral lines and shapes the power spectral density of an ultra bandwidth signal. First, a train of non-periodic pulses is generated. The non-periodic pulses are then modulated in time according to uncorrelated symbols. A polarity of the non-periodic pulses is inverted randomly before transmitting the non-periodic pulses as an ultra wide bandwidth signal to eliminate spectral lines and to shape a power spectral density of the ultra wide bandwidth signal.

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