×

Method and apparatus for receiving and despreading a continuous phase-modulated spread spectrum signal using self-synchronizing correlators

  • US 5,627,856 A
  • Filed: 06/07/1995
  • Issued: 05/06/1997
  • Est. Priority Date: 09/09/1994
  • Status: Expired due to Term
First Claim
Patent Images

1. An apparatus for despreading a received continuous phase modulated spread spectrum signal comprising:

  • a power divider for dividing a received spread spectrum signal into a real signal and an imaginary signal,a real CPM correlator for correlating said real signal and generating a real I correlation signal and a real Q correlation signal without generating a correlation sequence, said real CPM correlator comprising a self-synchronizing real I digital correlator and a self-synchronizing real Q digital correlator,an imaginary CPM correlator for correlating said imaginary signal and generating an imaginary I correlation signal and an imaginary Q correlation signal without generating a correlation sequence, said imaginary CPM correlator comprising a self-synchronizing imaginary I digital correlator and a self-synchronizing imaginary Q digital correlator,means for combining said real I correlation signal and said imaginary I correlation signal into a final I correlation signal, andmeans for combining said real Q correlation signal and said imaginary Q correlation signal into a final Q correlation signal.

View all claims
  • 6 Assignments
Timeline View
Assignment View
    ×
    ×