A Tone Reservation-Based Optical OFDM System for Short-Range IM/DD Transmission

This paper investigates the use of tone reservation for optical orthogonal frequency-division multiplexing (OFDM) transmission in a short-range, intensity-modulated, direct-detected (IM/DD) optical channel. Due to the unipolarity of the IM/DD channel, any asymmetric clipping of the bipolar OFDM signal and associated nonlinear distortion will result in an unfavorable dc power and significant performance penalty. Using a detailed analysis of the clipping distortion, we propose a new framework to enable IM/DD optical OFDM transmission, where certain subchannels are reserved to produce a negative peak cancellation (NPC) signal via a frequency-domain digital filter. This NPC signal guarantees a unipolar OFDM signal, hence eliminating any additional biasing and/or clipping. It also produces no in-band or out-of-and distortions and requires no transmission of any side information. Beneficial tradeoffs are identified that enable an efficient use of both the available power and spectrum.

[1]  Joseph M Kahn,et al.  OFDM vs. OOK with MLSD for IM/DD systems , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[2]  Liang Chen,et al.  Performance Evaluation of Optical OFDM Systems with Nonlinear Clipping Distortion , 2009, 2009 IEEE International Conference on Communications.

[3]  John M. Cioffi,et al.  A Discrete Multitone Transceiver System for HDSL Applications , 1991, IEEE J. Sel. Areas Commun..

[4]  Joseph M. Kahn,et al.  Multiple-Subcarrier Modulation for Nondirected Wireless Infrared Communication , 1994, IEEE J. Sel. Areas Commun..

[5]  E. Tangdiongga,et al.  47.4 Gb/s Transmission Over 100 m Graded-Index Plastic Optical Fiber Based on Rate-Adaptive Discrete Multitone Modulation , 2010, Journal of Lightwave Technology.

[6]  Jean Armstrong,et al.  Power efficient optical OFDM , 2006 .

[7]  B. Davies,et al.  Performance of clipped OFDM signal in fiber , 2004, Canadian Conference on Electrical and Computer Engineering 2004 (IEEE Cat. No.04CH37513).

[8]  David Cunningham.  Multimode Fiber Data Communication , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[9]  Liang Chen,et al.  Successive Decoding of Anti-Periodic OFDM Signals in IM/DD Optical Channel , 2010, 2010 IEEE International Conference on Communications.

[10]  R P Giddings,et al.  End-to-end real-time demonstration of 128-QAM-encoded optical OFDM transmission with a 5.25bit/s/Hz spectral efficiency over IMDD systems , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[11]  J. Kahn,et al.  Multiple-subcarrier modulation for non-directed wireless infrared communication , 1994, 1994 IEEE GLOBECOM. Communications: The Global Bridge.

[12]  Rafael Perez-Jimenez,et al.  OFDM over indoor wireless optical channel , 2005 .

[13]  Arthur James Lowery,et al.  Performance of Optical OFDM in Ultralong-Haul WDM Lightwave Systems , 2007, Journal of Lightwave Technology.

[14]  Robert Schober,et al.  Robust Cyclic Space-Frequency Filtering for BICM-OFDM with Outdated CSIT , 2009, 2009 IEEE International Conference on Communications.

[15]  Liang Chen,et al.  Diversity Combining for Asymmetrically Clipped Optical OFDM in IM/DD Channels , 2009, GLOBECOM 2009 - 2009 IEEE Global Telecommunications Conference.

[16]  S. Randel,et al.  High-Speed Transmission over Multimode Optical Fibers , 2008, OFC/NFOEC 2008 - 2008 Conference on Optical Fiber Communication/National Fiber Optic Engineers Conference.

[17]  K. Shore,et al.  High-speed transmission of adaptively modulated optical OFDM signals over multimode fibers using directly Modulated DFBs , 2006, Journal of Lightwave Technology.

[18]  Jose Tellado-Mourelo,et al.  Peak to average power reduction for multicarrier modulation , 1999 .

[19]  A. Gatherer,et al.  Controlling clipping probability in DMT transmission , 1997, Conference Record of the Thirty-First Asilomar Conference on Signals, Systems and Computers (Cat. No.97CB36136).

[20]  J. Kahn,et al.  Optical Modulator Optimization for Orthogonal Frequency-Division Multiplexing , 2009, Journal of Lightwave Technology.