TY - GEN
T1 - Probabilistically Shaped 8-PAM Suitable for Data Centers Communication
AU - Han, Xiao
AU - Djordjevic, Ivan B.
N1 - Publisher Copyright:
© 2018 IEEE.
PY - 2018/9/26
Y1 - 2018/9/26
N2 - 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.
AB - 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.
KW - 8-PAM
KW - LDPC coding.
KW - distribution matching
KW - exponential distribution
KW - probabilistic shaping
UR - http://www.scopus.com/inward/record.url?scp=85055569803&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055569803&partnerID=8YFLogxK
U2 - 10.1109/ICTON.2018.8473738
DO - 10.1109/ICTON.2018.8473738
M3 - Conference contribution
AN - SCOPUS:85055569803
T3 - International Conference on Transparent Optical Networks
BT - 2018 20th International Conference on Transparent Optical Networks, ICTON 2018
PB - IEEE Computer Society
T2 - 20th International Conference on Transparent Optical Networks, ICTON 2018
Y2 - 1 July 2018 through 5 July 2018
ER -