Low Complexity Max-log LLR Computation for Nonuniform PAM Constellations

Abstract

In this letter, we derive a low-complexity method for demodulating nonuniform PAM signals. With uniform Gray-coded M-PAM constellations, the reflective symmetry can be exploited to demodulate the signals with low complexity. However with nonuniform constellations, this symmetry is lost and more complicated computations are required. We derive an analytic… (More)

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Cite this paper

@article{Sandell2016LowCM, title={Low Complexity Max-log LLR Computation for Nonuniform PAM Constellations}, author={Magnus Sandell and Filippo Tosato and Amr Ismail}, journal={IEEE Communications Letters}, year={2016}, volume={20}, pages={838-841} }