Probabilistically Shaped 8-PAM Suitable for Data Centers Communication
Publisher
IEEECitation
Han, X., & Djordjevic, I. B. (2018, July). Probabilistically Shaped 8-PAM Suitable for Data Centers Communication. In 2018 20th International Conference on Transparent Optical Networks (ICTON) (pp. 1-4). IEEE.Rights
Copyright © 2018, IEEE.Collection Information
This item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at repository@u.library.arizona.edu.Abstract
We study non-uniform 8-PAM signaling schemes, based on Maxwell-Boltzmann and exponential source distributions, as candidates suitable for data centers' communications. We evaluate mutual information of these schemes against corresponding uniform 8-PAM scheme, for different parameters of source distributions. The properly chosen variable parameters for different SNR-regions allows us to closely approach Shannon limit, and to significantly outperform the corresponding uniform counterpart. We demonstrate that LPDC-coded 8-PAM with exponential distribution outperforms the LDPC-coded 8-PAM with uniform distribution of the same achievable information rate by 1.8 dB, and this improvement is comparable to that obtained from mutual information calculations.ISSN
978-1-5386-6605-0Version
Final accepted manuscriptAdditional Links
https://ieeexplore.ieee.org/document/8473738/ae974a485f413a2113503eed53cd6c53
10.1109/ICTON.2018.8473738