Optimization of high-order non-uniform QAM constellations

  title={Optimization of high-order non-uniform QAM constellations},
  author={Jan Z{\"o}llner and Nabil Sven Loghin},
  journal={2013 IEEE International Symposium on Broadband Multimedia Systems and Broadcasting (BMSB)},
Spectrally efficient transmission on the physical layer is a crucial attribute of state-of-the-art transmission systems. The latest broadcast and terrestrial point-to-point systems such as DVB-T2, DVB-C2 or LTE use LDPC- or Turbo-codes jointly with QAM constellations to achieve capacity approaching the Shannon limit. However, since the gap between the BICM capacity of conventional uniform QAM constellations and the Shannon limit increases for larger SNR, constellation shaping is required to… CONTINUE READING
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