FFT optimization for practical OFDM implementations

We investigate scaling the FFT-size in OFDM signal generated with FPGA-DAC set. Increasing FFT-size, creates challenges in optical back-to-back scenario due to less tolerance to phase noise. However, for transmission nonlinear tolerance was the same.

[1]  W. Marsden.  I and J , 2012 .

[2]  H. Griesser,et al.  21-GHz single-band OFDM transmitter with QPSK modulated subcarriers , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[3]  J. Armstrong,et al.  OFDM for Optical Communications , 2009, Journal of Lightwave Technology.

[4]  Fred Buchali,et al.  Towards real-time CO-OFDM transceivers , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.

[5]  B. Zhu,et al.  Transmission of a 448-Gb/s reduced-guard-interval CO-OFDM signal with a 60-GHz optical bandwidth over 2000 km of ULAF and five 80-GHz-Grid ROADMs , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[6]  R P Giddings,et al.  Experimental Demonstration of Real-Time Optical OFDM Transmission at 11.25 Gb/s Over 500-m MMFs Employing Directly Modulated DFB Lasers , 2011, IEEE Photonics Technology Letters.

[7]  William Shieh,et al.  Towards real-time implementation of optical OFDM transmission , 2010, 2010 Conference on Optical Fiber Communication (OFC/NFOEC), collocated National Fiber Optic Engineers Conference.

[8]  P ? ? ? ? ? ? ? % ? ? ? ? , 1991 .

[9]  Stefano Calabro,et al.  Realization of a 23.9 Gb/s real time optical-OFDM transmitter with a 1024 point IFFT , 2011, 2011 Optical Fiber Communication Conference and Exposition and the National Fiber Optic Engineers Conference.