System and method for the mitigation of spectral lines in an...

Pulse or digital communications – Spread spectrum

Reexamination Certificate

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Reexamination Certificate

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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.

REFERENCES:
patent: 6603818 (2003-08-01), Dress et al.
patent: 6735238 (2004-05-01), McCorkle
patent: 6909337 (2005-06-01), Kim et al.
patent: 2003/0169828 (2003-09-01), Roberts
patent: 2003/0199279 (2003-10-01), Roberts
patent: WO 01/93441 (2001-12-01), None
Notification of Transmittal of International Preliminary Report on Patentability from Patent Cooperation Treaty issued on Aug. 21, 2006 for the corresponding PCT patent application No. PCT/US05/26420 (a copy thereof).
International Preliminary Report on Patentability from Patent Cooperation Treaty issued on Aug. 2, 2006 for the corresponding PCT patent application No. PCT/US05/26420 (a copy thereof).
International Search Report issued from International Searching Authority issued on Feb. 21, 2006 for the corresponding International patent application No. PCT/US05/26420 (a copy and English translation thereof).

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