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Ultrafast time hopping CDMA and TDMA RF and optical communications: code-as-carrier, multichannel operation, high data rate operation and data rate on demand

  • US 6,160,802 A
  • Filed: 03/07/1997
  • Issued: 12/12/2000
  • Est. Priority Date: 07/29/1994
  • Status: Expired due to Fees
First Claim
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1. An ultrashort pulse time hopping code-division-multiple-access (CDMA) or time-division-multiple-access (TDMA) optical communications system in the time frequency domain, comprising:

  • transmitter means, said transmitter means including;

    a) means for generating a short duration pulse or packet in the femitosecond to microsecond range and means for controlling said means for generating,b) coding means connected to said means for controlling for varying the time position of each said short duration pulse or packet in frames of pulses or packets in orthogonal superframes of ultrafast time hopping code and time division multiple access format,c) precise oscillator-clock means for controlling such timing,d) encoding modems for transforming information, voice and data signals into pulse position modulation form,e) antenna means connected to said means for generating for receiving and broadcasting said short duration pulse or packet as a coded broadcast signal,receiver means, said receiver means including;

    a) antenna means for receiving said coded broadcast signal, andb) homodyne or heterodyne receiver means for receiving and decoding said coded broadcast signal.

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