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Low-power frequency-hopped spread spectrum reverse paging system

  • US 5,430,759 A
  • Filed: 11/24/1993
  • Issued: 07/04/1995
  • Est. Priority Date: 08/20/1992
  • Status: Expired due to Fees
First Claim
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1. A reverse paging system, comprising:

  • a local paging terminal having a telephone connection means for receiving a telephone call with a paging message, and encoding the paging message;

    a paging antenna connected to the local paging terminal operable for transmission of the paging message corresponding to a unique address;

    a plurality of reverse pagers divided into a plurality of groups, each pager corresponding to the unique address and having a transmitter for transmitting an acknowledgement signal on a frequency-hopped spread spectrum carrier the frequencies being selected by a repeating pseudo-random code sequence, each of said groups being assigned to a different non-overlapping sequence segment on the code sequence where the pagers of each of said groups use orthogonal frequencies;

    at least one reverse paging terminal having a receiving antenna for receiving the acknowledgement signal on a frequency-hopped spread spectrum carrier.

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