Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2005-12-30
2008-10-21
Wang, Ted (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S295000, C375S297000, C375S232000, C455S114300, C455S127300
Reexamination Certificate
active
07440488
ABSTRACT:
Communication and broadcast system for Time Division Multiple Access (TDMA), spread spectrum, filtered signal and cross-correlated in-phase and quadrature-phase baseband signals for Radio Frequency (RF) tunable or RF agile transmitters. A selector and connection device provides selection and connection of one or more of the TDMA, spread spectrum, filtered or cross-correlated baseband signals and or modulated signals to a transmitter. A first baseband and or modulation circuit provides spread spectrum signal, a second baseband and or modulation circuit provides TDMA signal, a third circuit provides filtered and or cross-correlated baseband and or modulation signals to a selector for selecting either one or more modulated signals and providing the selected signals to the transmitter.
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