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Point-to multipoint digital communications system facilitating use of a reduced complexity receiver at each of the multipoint sites

  • US 5,912,920 A
  • Filed: 03/27/1997
  • Issued: 06/15/1999
  • Est. Priority Date: 03/27/1997
  • Status: Expired due to Term
First Claim
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1. A communications system comprising:

  • a plurality of remote receivers numbering M for receiving and demodulating respective PSK symbols received from a transmission medium;

    a central transmitter transmitting periodically occurring frames of data to the plurality of receivers over the transmission medium, each frame of data having a header defining each frame, each frame of data containing L total symbols including a subset of Xm symbols respectively designated for each one of the M plurality of remote receivers, the transmitter interleaving the Xm symbols for a given remote receiver in a given frame into a plurality of periodic, non-consecutive groups of R symbols per group, wherein R<

    Xm.

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