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 & Computer Engineering, Tucson, USA 85721
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 ISI channel with memory. We also propose a multilevel turbo-equalization scheme that is able closely to approach the channel capacity. We show that with this scheme we are able straightforwardly to upgrade currently installed 10 Gb/s optical transmission systems to 100 Gb/s, and even with small memory assumption we are able to achieve 100 Gb/s per DWDM channel transmission over 9600 km.
Keywords :
Channel capacity; Fiber nonlinear optics; High speed optical techniques; Nonlinear optics; Optical fiber polarization; Optical fibers; Optical filters; Optical modulation; Optical noise; Optical scattering; Fiber-optics communications; channel capacity; forward error correction (FEC); low-density parity-check (LDPC) codes; modulation;
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
