Title :
On the channel capacity of multilevel modulation schemes with coherent detection
Author :
Djordjevic, Ivan B. ; Xu, Lei ; Wang, Ting
Author_Institution :
University of Arizona, Department of Electrical and Computer Engineering, 1230 E. Speedway Blvd., Tucson, 85721, USA
Abstract :
We describe a method to determine the channel capacity of an arbitrary multilevel modulation scheme by modeling the fiber-optic channel as a dynamical nonlinear intersymbol interference (ISI) channel with memory. We also propose a multilevel low-density parity-check (LDPC)-coded turbo-equalization scheme that is able closely to approach the channel capacity.
Keywords :
Channel capacity; Fiber nonlinear optics; High speed optical techniques; Intersymbol interference; Nonlinear optics; Optical fiber communication; Optical fibers; Optical modulation; Optical noise; Parity check codes;
Conference_Titel :
Communications and Photonics Conference and Exhibition (ACP), 2009 Asia
Conference_Location :
Shanghai, China
Print_ISBN :
978-1-55752-877-3
Electronic_ISBN :
978-1-55752-877-3
