SDN-enabled adaptive modulation and coding in hybrid C-RANs

Mingwei Yang, Houman Rastegarfar, Ivan B. Djordjevic

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations


In this invited paper, we describe our recently proposed software-defined networking (SDN)-enabled, adaptive resource allocation framework, including hybrid signalling schemes, for mobile fronthaul (MFH) networks that employ both coherent detection (CD) and direct detection (DD) technologies. To optimize application performance and network efficiency, we propose phase-coded three-level pulse amplitude modulation (PAM-3) for multicast traffic delivery to CD and DD nodes. We implement several connectivity scenarios based on both typical and improved PAM-3 in an SDN fronthaul testbed and examine the pre-forward error correction (FEC) bit error rate (BER) performance for 25 Gbaud signals. Using low-density parity-check (LDPC) codes to achieve the desired post-FEC BER levels, we study the performance gains due to code rate adaptation in dynamic wavelength-routing MFH networks.

Original languageEnglish (US)
Title of host publication21st International Conference on Transparent Optical Networks, ICTON 2019
PublisherIEEE Computer Society
ISBN (Electronic)9781728127798
StatePublished - Jul 2019
Event21st International Conference on Transparent Optical Networks, ICTON 2019 - Angers, France
Duration: Jul 9 2019Jul 13 2019

Publication series

NameInternational Conference on Transparent Optical Networks
ISSN (Electronic)2162-7339


Conference21st International Conference on Transparent Optical Networks, ICTON 2019


  • Centralized radio access network (C-RAN)
  • Coherent detection (CD)
  • Direct detection (DD)
  • Low-density parity-check (LDPC) coding
  • Mobile fronthaul (MFH)
  • Software-defined networking (SDN)

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials


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