Constellation shaping for pragmatic turbo-coded modulation with high spectral efficiency

  title={Constellation shaping for pragmatic turbo-coded modulation with high spectral efficiency},
  author={Dan Raphaeli and Assaf Gurevitz},
  journal={IEEE Transactions on Communications},
We propose a new turbo-encoding scheme for high spectral efficiency with performance close to the Gaussian channel capacity. The scheme combines nonuniform signaling on a Gaussian channel with pragmatic turbo-coded modulation (TCM) for simple and flexible implementation. A variable-rate turbo code is followed by a Huffmann code mapping onto nonequiprobable points in a quadrature amplitude modulation constellation. The rate of the turbo code is matched to the Huffmann code by variable puncturing… CONTINUE READING
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