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High bandwidth efficient spread spectrum modulation using chirp waveform

  • US 20020009125A1
  • Filed: 06/11/2001
  • Published: 01/24/2002
  • Est. Priority Date: 06/12/2000
  • Status: Abandoned Application
First Claim
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1. A high bandwidth efficient method for spread spectrum modulation using a chirp waveform, comprising the steps of:

  • (a) encoding an information data signal, the encoded signal having a plurality of symbols encoded at a symbol rate, each symbol having a symbol duration;

    (b) splitting the information data signal into a plurality of parallel information data signals using a serial to parallel converter;

    (c) generating a plurality of orthogonal chirp waveforms which are orthogonal in frequency;

    (d) modulating said plurality of parallel information data signals with said plurality of orthogonal chirp waveforms in order to produce a plurality of parallel information data signals modulated on orthogonal chirp waveforms;

    (e) combining said plurality of plurality of parallel information data signals modulated on orthogonal chirp waveforms to produce a combined waveform; and

    (f) transmitting said combined waveform.

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