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Sub-banded ultra-wideband communications systems

  • US 7,532,564 B2
  • Filed: 09/11/2002
  • Issued: 05/12/2009
  • Est. Priority Date: 09/11/2002
  • Status: Expired due to Fees
First Claim
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1. A transmitter, comprising:

  • a wideband pulse modulator to modulate a data sequence onto a plurality of wideband pulses with a selected duty cycle, the duty cycle being selected for reception without equalization;

    a plurality of sub-band filters each to generate a single sub-band of the wideband pulses, the sub-bands comprising concatenated orthogonal frequency division waveforms to each carry a portion of the data sequence;

    a gate to receive the sub-bands, to separate the sub-bands in time for time diversity, to spread the data sequence across the wideband, and to attenuate sub-bands that experience interference; and

    an upconverter to convert the sub-bands to radio-frequency bands for transmission.

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