Conference Proceedings
Linear programming for tone reservation based IM/DD optical OFDM communications
L Chen, Y Ji, B Krongold, J Evans
Conference Record Asilomar Conference on Signals Systems and Computers | Published : 2011
Abstract
This paper investigates the use of tone reservation for optical orthogonal frequency-division multiplexing (OFDM) systems in a short-range intensity-modulated, direct-detected (IM/DD) channel. In order to avoid any asymmetric clipping of the bipolar OFDM signal and associated nonlinear distortion, some of the tones/subchannels are reserved to produce a negative peak cancellation (NPC) signal. This approach guarantees a unipolar output and hence eliminates all in-band and out-of-band distortion. With an arbitrary reserved set, a linear programming (LP) problem can be formulated to optimally solve the frequency-domain signal design problem. Simulation results suggest that this method offers gr..
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Funding Acknowledgements
This work is supported by National ICT, Australia (NICTA). NICTA is funded by the Australian Government as represented by the Department of Broadband, Communications and the Digital Economy and the Australian Research Council through the ICT Centre of Excellence program. L. Chen is partially supported by the Melbourne Overseas Research Experience Scholarship, NII international intern program and the Kenneth Myers Memorial Scholarship.