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Pulse modulation and demodulation in a multiband UWB communication system

  • US 8,634,445 B2
  • Filed: 04/25/2005
  • Issued: 01/21/2014
  • Est. Priority Date: 04/29/2004
  • Status: Active Grant
First Claim
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1. A communications system comprising:

  • a transmitter configured to;

    form pulses from data to be transmitted;

    generate local oscillator signals in multiple frequency bands, wherein differences in phase and frequency between the local oscillator signals are constant;

    modulate the local oscillator signals with the pulses to generate signals in the multiple frequency bands; and

    transmit the generated signals in the multiple frequency bands, wherein a signal in one of the multiple frequency bands is modulated with pulses from known data and has a predetermined phase, wherein the transmitter is configured to transmit data in the multiple frequency bands by means of polarity of the pulses in the multiple frequency bands, pulses in the one of the multiple frequency bands having a predetermined polarity, the predetermined polarity being used to detect pulses in signals in others of the multiple frequency bands.

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