Pulse or digital communications – Spread spectrum
Reexamination Certificate
2007-05-29
2007-05-29
Tse, Young T. (Department: 2611)
Pulse or digital communications
Spread spectrum
Reexamination Certificate
active
10902021
ABSTRACT:
A method and an apparatus are provided for mitigating spectral lines in a wireless signal. First a code word is generated that is made up of a plurality of binary or ternary encoded pulses. Then a plurality of code-word-modulated wavelets are generated in response to the code word. These wavelets can be Gaussian monopulses, repeated cycles of a sine wave, or other shaped impulse signals. The plurality of code-word-modulated wavelets are then modulated with a bit of transmit data to form a plurality of data-modulated wavelets. This modulation serves to whiten the signals since the transmit data is effectively random. Finally, the plurality of data-modulated wavelets are transmitted to a remote device.
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Huynh Phuong T.
Johnson Terence L.
McCorkle John W.
Freescale Semiconductor Inc.
Tse Young T.
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