Shaped On-Off Keying Using Polar Codes
Abstract
The probabilistic shaping scheme from Honda and Yamamoto (2013) for polar codes is used to enable power-efficient signaling for on-off keying (OOK). As OOK has a non-symmetric optimal input distribution, shaping approaches that are based on the concatenation of a distribution matcher followed by systematic encoding do not result in optimal signaling. Instead, these approaches represent a time sharing scheme where only a fraction of the codeword symbols is shaped. The proposed scheme uses a polar code for joint distribution matching and forward error correction which enables asymptotically optimal signaling. Numerical simulations show a gain of 1.8 dB compared to uniform transmission at a spectral efficiency of 0.25 bits/channel use for a blocklength of 65,536 bits.
Keywords
Cite
@article{arxiv.1907.08468,
title = {Shaped On-Off Keying Using Polar Codes},
author = {Thomas Wiegart and Fabian Steiner and Patrick Schulte and Peihong Yuan},
journal= {arXiv preprint arXiv:1907.08468},
year = {2019}
}
Comments
accepted for publication in IEEE Communications Letters