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MLSE decoding of PRS type inter-bin interference in receiver-end windowed DMT system

  • US 7,058,141 B1
  • Filed: 06/02/2000
  • Issued: 06/06/2006
  • Est. Priority Date: 06/02/2000
  • Status: Expired due to Term
First Claim
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1. A receiver circuit for providing a decoded output from a received discrete multi-tone modulated input signal, the input signal being received from a communication channel having noise thereon, the input signal comprising digital data, the circuit comprising:

  • a first stage having a frequency response for applying a discrete Fourier transform to the input signal; and

    a second stage for receiving an output signal from said first stage and per-bin decoding said signal based on a maximum likelihood sequence estimation (MLSE) algorithm so as to recover said digital data;

    wherein said maximum likelihood sequence estimation (MLSE) algorithm includes a calculation of state metrics and is modified to include subtraction of estimated noise samples using noise prediction coefficients.

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