Universal rateless codes from coupled LT codes

  title={Universal rateless codes from coupled LT codes},
  author={Vahid Aref and R{\"u}diger L. Urbanke},
  journal={2011 IEEE Information Theory Workshop},
It was recently shown that spatial coupling of individual low-density parity-check codes improves the belief-propagation threshold of the coupled ensemble essentially to the maximum a posteriori threshold of the underlying ensemble. We study the performance of spatially coupled low-density generator-matrix ensembles when used for transmission over binary-input memoryless output-symmetric channels. We show by means of density evolution that the threshold saturation phenomenon also takes place in… CONTINUE READING
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