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Fast resynchronization system for high-speed data transmission

  • US 5,870,438 A
  • Filed: 09/26/1996
  • Issued: 02/09/1999
  • Est. Priority Date: 09/26/1996
  • Status: Expired due to Term
First Claim
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1. A system for estimating a timing phase and a carrier phase offset of a received signal corresponding to a known transmitted signal for resuming high-speed data reception of transmitted data signals that were previously interrupted, the system comprising:

  • means for modifying the received signal to produce a modified signal;

    means for determining a discrete Fourier transform (DTF) of the modified signal;

    means for determining a DFT of the known transmitted signal;

    means for determining a complex conjugate of the DFT of the known transmitted signal;

    a multiplier for calculating a product of the DFT of the modified signal and the complex conjugate of the DFT of the known transmitted signal;

    a phase estimator for obtaining a phase function based upon the product of the multiplier, the phase function being a linear function of the carrier phase offset and timing phase offset; and

    means for estimating the timing phase offset and carrier phase offset according to the phase function.

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