All-analogue real-time broadband filter bank multicarrier optical communications system

Fernando A. Gutiérrez, Philip Perry, Eamonn P. Martin, Andrew D. Ellis, Frank Smyth, Liam P. Barry

Research output: Contribution to journalArticle

Abstract

This paper studies the key aspects of an optical link which transmits a broadband microwave filter bank multicarrier (FBMC) signal. The study is presented in the context of creating an all-analogue real-time multigigabit orthogonal frequency division multiplexing electro-optical transceiver for short range and high-capacity data center networks. Passive microwave filters are used to perform the pulse shaping of the bit streams, allowing an orthogonal transmission without the necessity of digital signal processing (DSP). Accordingly, a cyclic prefix that would cause a reduction in the net data rate is not required. An experiment consisting of three orthogonally spaced 2.7 Gbaud quadrature phase shift keyed subchannels demonstrates that the spectral efficiency of traditional DSP-less subcarrier multiplexed links can be potentially doubled. A sensitivity of -29.5 dBm is achieved in a 1-km link.

Original languageEnglish
Pages (from-to)5073-5083
Number of pages11
JournalJournal of Lightwave Technology
Volume33
Issue number24
Early online date29 Oct 2015
DOIs
Publication statusPublished - 15 Dec 2015

Bibliographical note

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Funding: EI CFTD (CF/2011/1627); SFI (09/IN.1/12653 and 10/CE/I1853): and EPSRC (EP/L000091/1)

Keywords

  • electro optical transceiver
  • Filter Bank Multicarrier
  • Orthogonal Frequency Division Multiplexing
  • Subcarrier Multiplexing
  • FBMC
  • OFDM
  • SCM

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