Pulse or digital communications – Spread spectrum
Reexamination Certificate
2006-02-24
2009-02-03
Vo, Don N (Department: 2611)
Pulse or digital communications
Spread spectrum
C375S259000
Reexamination Certificate
active
07486715
ABSTRACT:
A method of transmitting and receiving a narrow band integer cycle or impulse modulated signal for spectrum sharing comprising modulating a carrier with a first digital data stream using an integer cycle or impulse modulator then selecting a portion of the sideband of this RF modulated signal for transmission. Next modulating the carrier with a second digital data stream using an integer cycle or impulse modulator and selecting a different portion of the sideband of this second RF modulated signal for transmission. Finally combining and filtering the first and second RF modulated signals to remove all of the first and second RF modulated signals except the selected sideband portions and the carrier which creates a low power signal when transmitted. The transmitted signal is then demodulated through use of a wavelet pass filter which nulls all received RF signals except the low power RF signal when there is digital data present thus allowing for reconstruction of the first and second digital data streams.
REFERENCES:
patent: 2002/0034268 (2002-03-01), Miyanabe et al.
patent: 2006/0078038 (2006-04-01), McCorkle
patent: 2006/0228118 (2006-10-01), Schemmann et al.
Cook, Esq. Dennis L.
Vo Don N
XG Technology, Inc.
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