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Automatic frequency control communication system

  • US 6,456,672 B1
  • Filed: 04/28/1998
  • Issued: 09/24/2002
  • Est. Priority Date: 10/30/1997
  • Status: Expired due to Fees
First Claim
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1. An automatic frequency control communication system comprising:

  • a transmitter which inputs transmission data, generates delayed transmission data having a time delay, multiplexes the delayed transmission data with the transmission data for generating multiplexed data, modulates the multiplexed data using Phase Shift Keying (PSK) modulation for generating a transmission signal, and transmits the transmission signal, and a receiver which receives the transmission signal transmitted by the transmitter as a received signal, detects the delayed transmission data and the transmission data included in the received signal, compensates for a phase shift of the received signal based on the delayed transmission data and the transmission data, and demodulates the received signal based on the delayed transmission data and the transmission data.

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