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Methods and systems for optimal zero-forcing and MMSE frequency domain equalizers for complex and VSB signals

  • US 8,782,112 B2
  • Filed: 06/28/2011
  • Issued: 07/15/2014
  • Est. Priority Date: 06/28/2011
  • Status: Expired due to Fees
First Claim
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1. A method of equalizing signals in a receiver device for capturing a block of data generated from N data symbols in a single carrier communication system, the method comprising:

  • receiving samples in the receiver device;

    performing a pN point discrete Fourier transform of the samples at a p/T sampler output of a receiver circuit in the receiver device to generate a frequency domain representation of r(kT/p) for each sample;

    generating a channel estimate;

    computing the frequency response of a zero-forcing or minimum-mean-square equalizer;

    multiplying a conjugate of the computed frequency response with the generated frequency domain representation of each sample to generate a product value;

    generating N-aliased frequency domain values from the generated product value for each of the samples in a transition band; and

    performing a transform on the generated N-aliased frequency domain values to generate estimates of a transmitted time domain data symbol.

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