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Method and system for controlling a communications carrier's power spectral density (PSD) using spread spectrum for matched spectral allocation

  • US 9,178,605 B2
  • Filed: 02/28/2012
  • Issued: 11/03/2015
  • Est. Priority Date: 12/21/2011
  • Status: Active Grant
First Claim
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1. A method of reducing adjacent satellite interference, the method comprising:

  • monitoring, by a processor, a power spectral density (PSD) of a signal transmitted by a remote transmitter, the signal comprising a non-spread waveform;

    determining, by the processor, that the PSD of the signal transmitted by the remote transmitter is above a predetermined level;

    reducing the PSD of the signal transmitted by the remote transmitter by adjusting at least one of a spread spectrum spreading factor, a modulation factor, and a forward error correction (FEC) rate using a modulator while maintaining a constant spectral allocation and center frequency of the signal;

    transitioning the non-spread waveform to a spread waveform wherein the non-spread waveform and the spread waveform have a same spectral allocation; and

    applying a spread factor of a type 2^N while transitioning the non-spread waveform to a spread waveform.

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