Design of MLSD-Based Receivers for Short-Range Optical Communications Using the Volterra Expansion

Raquel Guerreiro Machado1, Beatrice Tomasi, Hartmut Hafermann, Tomasin Stefano2

  • 1Huawei Technologies Co. Ltd.
  • 2University of Padova

Details

11:30 - 12:45 | Wed 6 Jul | Pentland B | R10.6

Session: Coding, Modulation and Equalization

Abstract

With the ever-increasing demand for higher data rates in optical communications, the the necessity of designing receivers that are able to deal with the non-linearities and impairments such as Chromatic Dispersion (CD) becomes greatly important. In this sense, even though Maximum Likelihood Sequence Detectors (MLSD) have been largely used to mitigate the CD in Intensity Modulation/Direct Detection (IM/DD) optical communication systems, for practical applications the high complexity of receivers remain an important issue. In this paper, we analyze the design of MLSD-based receivers using the Orthogonal Volterra Kernel Model for IM/DD optical communication systems in Metro Optical applications. We discuss the impact in complexity and performance of the main parameters of the model and provide three design options for the MLSD-based receiver. Finally we provide numerical simulations showing the Bit Error Rate (BER) performances of the three considered designs for both On-Off Keying (OOK) and Pulse Amplitude Modulation (PAM).