Non-rectangular perfect reconstruction pulse shaping based ICI reduction in CO-OFDM

Thavamaran Kanesan (1, 2) , Son Thai Le (2) , Damien Roque (3) , Andrew D. Ellis (2)

1 Telekom Research and Development (TM Innovation Centre)
2 AIPT - Aston Institute of Photonic Technologies
3 GIPSA-CICS - GIPSA - Communication Information and Complex Systems

In this paper, we propose to increase residual carrier frequency offset tolerance based on short perfect reconstruction pulse shaping for coherent optical-orthogonal frequency division multiplexing. The proposed method suppresses the residual carrier frequency offset induced penalty at the receiver, without requiring any additional overhead and exhaustive signal processing. The Q-factor improvement contributed by the proposed method is 1.6 dB and 1.8 dB for time-frequency localization maximization and out-of-band energy minimization pulse shapes, respectively. Finally, the transmission span gain under the influence of residual carrier frequency offset is ~62% with out-of-band energy minimization pulse shape.

Mots clés: Fiber optics and optical communications; Coherent communications

Domaines: Réseaux et télécommunications [cs.NI]

Thavamaran Kanesan, Son Thai Le, Damien Roque, Andrew D. Ellis. Non-rectangular perfect reconstruction pulse shaping based ICI reduction in CO-OFDM. Optics Express, 2014, 22 (2), pp.1749-1759. ⟨10.1364/OE.22.001749⟩. ⟨hal-00962335⟩