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Use of modified line encoding and low signal-to-noise ratio based signal processing to extend range of digital data transmission over repeaterless two-wire telephone link

  • US 5,999,542 A
  • Filed: 08/12/1998
  • Issued: 12/07/1999
  • Est. Priority Date: 08/18/1995
  • Status: Expired due to Term
First Claim
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1. A method for extending the distance for transporting digital communication signals from a first site to a second site, comprising the steps of:

  • (a) converting first digital communication signals that are encoded at a first number of information bits per symbol at a prescribed data rate into second digital communication signals that are encoded at a second number of information bits per symbol, different from said first number, at said prescribed data rate; and

    (b) processing said second digital communication signals for transport to said second site.

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