title: Statistical physics inspired energy-efficient coded-modulation for optical communications.
abstract: Because Shannon's entropy can be obtained by Stirling's approximation of thermodynamics entropy, the statistical physics energy minimization methods are directly applicable to the signal constellation design. We demonstrate that statistical physics inspired energy-efficient (EE) signal constellation designs, in combination with large-girth low-density parity-check (LDPC) codes, significantly outperform conventional LDPC-coded polarization-division multiplexed quadrature amplitude modulation schemes. We also describe an EE signal constellation design algorithm. Finally, we propose the discrete-time implementation of D-dimensional transceiver and corresponding EE polarization-division multiplexed system.
authors.affiliation: Electrical and Computer Engineering, University of Arizona, 1230 East Speedway Boulevard, Tucson, Arizona 85721, USA. ivan@email.arizona.edu
authors.forename: Ivan B
authors.initials: IB
authors.lastname: Djordjevic
authors.forename: Lei
authors.initials: L
authors.lastname: Xu
authors.forename: Ting
authors.initials: T
authors.lastname: Wang