Is a
Patent attributes
Patent Jurisdiction
Patent Number
Date of Patent
May 12, 2009
Patent Application Number
10306419
Date Filed
November 27, 2002
Patent Primary Examiner
Patent abstract
Transmitters, receivers and associated methods are disclosed for providing phase and amplitude modulation in a carrier-less communication system (e.g., an ultra-wide band communication system). An approximate quadrature signal is provided by delaying the in-phase signal by an amount determined by various criteria, such as the bandwidths of the component signals, minimizing the mean square error between an approximate quadrature signal and the true quadrature signal, and minimizing the auto-correlation function of the in-phase signal.
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