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Apparatus for and method of adaptive synchronization in a spread spectrum communications receiver

  • US 6,614,864 B1
  • Filed: 10/12/1999
  • Issued: 09/02/2003
  • Est. Priority Date: 10/12/1999
  • Status: Expired due to Fees
First Claim
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1. In a communications system, a method of acquiring synchronization, comprising the steps of:

  • transmitting a preamble over a communication channel, said preamble comprising a plurality of symbols having known rotation and phase;

    receiving a sequence of input samples from said communication channel;

    dividing said received sequence into two or more vectors;

    de-rotating and phase correcting said vectors back to their original rotation and phase; and

    applying a matching function between said vectors so as to generate a metric indicative of the degree of synchronization.

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