Achievable information rates calculation for optical OFDM few-mode fiber long-haul transmission systems

Changyu Lin, Ivan B Djordjevic, Ding Zou

Research output: Contribution to journalArticle

9 Scopus citations


We propose a method to estimate the lower bound of achievable information rates (AIRs) of high speed orthogonal frequency-division multiplexing (OFDM) in spatial division multiplexing (SDM) optical longhaul transmission systems. The estimation of AIR is based on the forward recursion of multidimensional super-symbol efficient sliding-window Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm. We consider most of the degradations of fiber links including nonlinear effects in few-mode fiber (FMF). This method does not consider the SDM as a simple multiplexer of independent data streams, but provides a super-symbol version for AIR calculation over spatial channels. This super-symbol version of AIR calculation algorithm, in principle, can be used for arbitrary multiple-inputmultiple-output (MIMO)-SDM system with channel memory consideration. We illustrate this method by performing Monte Carlo simulations in a complete FMF model. Both channel model and algorithm for calculation of the AIRs are described in details. We also compare the AIRs results for QPSK/16QAM in both single mode fiber (SMF)- and FMF-based optical OFDM transmission.

Original languageEnglish (US)
Pages (from-to)16846-16856
Number of pages11
JournalOptics Express
Issue number13
Publication statusPublished - Jun 29 2015


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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