Shaping of multilevel constellations is investigated and it is shown that the performance in the waterfall region can be accurately predicted on the basis of the performance of the LDPC codes on the Binary AWGN channel. The use of punctured LDPC codes, not investigated so far in combination with shaped constellations, is checked to verify if it offers some additional gain. Some final work on the LDPC code implementation is still needed, to simplify the encoder and to reduce the power consumption of the decoder.
Constellation shaping and LDPC codes (2017)
Sandro Bellini;Marco Ferrari
2018
Abstract
Shaping of multilevel constellations is investigated and it is shown that the performance in the waterfall region can be accurately predicted on the basis of the performance of the LDPC codes on the Binary AWGN channel. The use of punctured LDPC codes, not investigated so far in combination with shaped constellations, is checked to verify if it offers some additional gain. Some final work on the LDPC code implementation is still needed, to simplify the encoder and to reduce the power consumption of the decoder.File in questo prodotto:
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