P. Udupa, O. Sentieys, and L. Bramerie, A Scalable Parallel Architecture for Coarse Time Synchronization for Coherent Optical-OFDM Systems," submitted to IEEE Transaction Briefs on Very Large Scale Integration (VLSI) Systems, 2014.

P. Udupa, O. Sentieys, and P. Scalart, A Novel Hierarchical Low Complexity Synchronization Method for OFDM Systems, 2013 IEEE 77th Vehicular Technology Conference (VTC Spring), pp.1-5, 2013.
DOI : 10.1109/VTCSpring.2013.6691838

URL : https://hal.archives-ouvertes.fr/hal-00931530

P. Udupa, O. Sentieys, and P. Scalart, A block-parallel architecture for initial and fine synchronization in OFDM systems, 2013 IEEE International Conference on Communications (ICC), pp.4761-4765, 2013.
DOI : 10.1109/ICC.2013.6655326

URL : https://hal.archives-ouvertes.fr/hal-00931445

P. Udupa, O. Sentieys, and L. Bramerie, Design and Implementation of DSP algorithms for 100 Gbps Optical OFDM System, GRETSI 2013, 2013.

P. Udupa, O. Sentieys, and L. Bramerie, Design and Real Time FPGA Prototyping of 100Gb/s Optical MB-OFDM System and Beyond, GDR SOC/SIP 2012, 2012.

V. Cisco, ]. R. Forecasting-widget, G. Essiambre, P. Kramer, G. Winzer et al., Capacity Limits of Optical Fiber Networks, Journal of Lightwave Technology, vol.28, issue.2 4, pp.662-701, 2010.

K. Roberts, D. Beckett, D. Boertjes, J. Berthold, and C. Laperle, 100G and beyond with digital coherent signal processing, IEEE Communications Magazine, vol.48, issue.7, pp.62-69, 2010.
DOI : 10.1109/MCOM.2010.5496879

M. Puschel, J. Moura, J. Johnson, D. Padua, M. Veloso et al., SPIRAL: Code Generation for DSP Transforms, Proceedings of the IEEE, vol.93, issue.2, pp.232-275, 2005.
DOI : 10.1109/JPROC.2004.840306

M. Garrido, J. Grajal, M. A. Sanchez, and O. Gustafsson, Pipelined Radix- 2 k Feedforward FFT Architectures, IEEE Transactions on Very Large Scale Integration (VLSI) Systems, pp.23-32, 2013.

E. Ip, A. Lau, D. Barros, and J. Kahn, Coherent detection in optical fiber systems, Optics Express, vol.16, issue.2, pp.753-791, 2008.
DOI : 10.1364/OE.16.000753

S. Jansen, Optical OFDM, a hype or is it for real, Optical Communication 34th European Conference on, sept, p.1, 2008.

M. Taylor, Coherent Detection for Fiber Optic Communications using Real Time Digital Signal Processing, Optical Fiber Communication and the National Fiber Optic Engineers Conference, pp.1-3, 2007.

Y. Liu and P. Fan, Modified Chu sequences with smaller alphabet size, Electronics Letters, vol.40, issue.10, pp.598-599, 2004.
DOI : 10.1049/el:20040437

P. Udupa, O. Sentieys, and P. Scalart, A Novel Hierarchical Low Complexity Synchronization Method for OFDM Systems, 2013 IEEE 77th Vehicular Technology Conference (VTC Spring), pp.1-5, 2013.
DOI : 10.1109/VTCSpring.2013.6691838

URL : https://hal.archives-ouvertes.fr/hal-00931530

S. Beyme and C. Leung, Efficient computation of DFT of Zadoff-Chu sequences, Electronics Letters, vol.45, issue.9, pp.461-463, 2009.
DOI : 10.1049/el.2009.3330

S. P. Lloyd, Least squares quantization in PCM, IEEE Transactions on Information Theory, pp.129-137, 1982.
DOI : 10.1109/TIT.1982.1056489

N. Kaneda, Q. Yang, X. Liu, S. Chandrasekhar, W. Shieh et al., Real-Time 2.5 GS/s Coherent Optical Receiver for 53.3-Gb/s Sub-Banded OFDM, Journal of Lightwave Technology, vol.28, issue.4, pp.494-501, 2010.
DOI : 10.1109/JLT.2009.2031126

X. Yi, W. Shieh, and Y. Tang, Phase Estimation for Coherent Optical OFDM, IEEE Photonics Technology Letters, vol.19, issue.12, pp.919-921, 2007.
DOI : 10.1109/LPT.2007.897572

J. Armstrong, OFDM for Optical Communications, Journal of Lightwave Technology, vol.27, issue.3, pp.189-204, 2009.
DOI : 10.1109/JLT.2008.2010061

W. Shieh, X. Yi, Y. Ma, and Q. Yang, Coherent optical OFDM: has its time come? [Invited], Journal of Optical Networking, vol.7, issue.3, pp.234-255, 2008.
DOI : 10.1364/JON.7.000234

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.330.8006

J. Bingham, Multicarrier modulation for data transmission: an idea whose time has come, IEEE Communications Magazine, vol.28, issue.5, pp.5-14, 1990.
DOI : 10.1109/35.54342

S. Melle, J. Jaeger, D. Perkins, and V. Vusirikala, Marlet drivers and implementation options for 100-GBE transport over the WAN, IEEE Communications Magazine, vol.45, issue.11, pp.18-24, 2007.
DOI : 10.1109/MCOM.2007.4378341

W. Shieh, H. Bao, and Y. Tang, Coherent optical OFDM: theory and design, Optics Express, vol.16, issue.2, pp.841-859, 2008.
DOI : 10.1364/OE.16.000841

B. Choi, E. Kuan, and L. Hanzo, Crest-Factor Study of MC-CDMA and OFDM, IEEE VTS 50th Vehicular Technology Conference, pp.233-237, 1999.

P. Liu and Y. Bar-ness, Closed-Form Expressions for BER Performance in OFDM Systems with Phase Noise, 2006 IEEE International Conference on Communications, pp.5366-5370, 2006.
DOI : 10.1109/ICC.2006.255514

L. Tomba, On the effect of Wiener phase noise in OFDM systems, Proceedings of the IEEE Custom Integrated Circuits Conference, pp.580-583, 1998.
DOI : 10.1109/26.668721

M. A. Sanchez, M. Garrido, M. Lopez-vallejo, and J. Grajal, Implementing FFT-based digital channelized receivers on FPGA platforms, IEEE Transactions on Aerospace and Electronic Systems, vol.44, issue.4, pp.1567-1585, 2008.
DOI : 10.1109/TAES.2008.4667732

J. A. Johnston, Parallel pipeline fast fourier transformer, IEE Proceedings for Communications, Radar and Signal Processing, pp.564-572, 1983.
DOI : 10.1049/ip-f-1.1983.0088

R. Schmogrow, M. Winter, D. Hillerkuss, B. Nebendahl, S. Ben-ezra et al., Real-time OFDM transmitter beyond 100 Gbit/s, Optics Express, vol.19, issue.13, pp.12-740, 2011.
DOI : 10.1364/OE.19.012740

B. Inan, O. Karakaya, P. Kainzmaier, S. Adhikari, S. Calabro et al., Realization of a 23.9 Gb/s Real Time Optical-OFDM Transmitter with a 1024 Point IFFT, Optical Fiber Communication Conference/National Fiber Optic Engineers Conference 2011, pp.1-3, 2011.
DOI : 10.1364/OFC.2011.OMS2

B. Inan, S. Adhikari, O. Karakaya, P. Kainzmaier, M. Mocker et al., Realization of a real-time

Y. M. Chen, Q. Yang, and W. Shieh, Multi-Gigabit Real-Time Coherent Optical OFDM Receiver, Optical Fiber Communication Conference and National Fiber Optic Engineers Conference, pp.1-3, 2009.
DOI : 10.1364/OFC.2009.OTuO4

T. Schmidl and D. Cox, Robust frequency and timing synchronization for OFDM, IEEE Transactions on Communications, vol.45, issue.12, pp.1613-1621, 1997.
DOI : 10.1109/26.650240

URL : http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.452.9215

H. Minn, V. Bhargava, and K. Letaief, A robust timing and frequency synchronization for OFDM systems, IEEE Transactions on Wireless Communications, vol.24, issue.5, pp.822-839, 2003.
DOI : 10.1109/TWC.2003.814346

K. Shi and E. Serpedin, Coarse Frame and Carrier Synchronization of OFDM Systems: A New Metric and Comparison, IEEE Transactions on Wireless Communications, vol.3, issue.4, pp.1271-1284, 2004.
DOI : 10.1109/TWC.2004.828282

B. Park, H. Cheon, C. Kang, and D. Hong, A novel timing estimation method for OFDM systems, IEEE Communications Letters, vol.7, issue.5, pp.239-241, 2003.
DOI : 10.1109/LCOMM.2003.812181

S. D. Choi, J. M. Choi, and J. H. Lee, An Initial Timing Offset Estimation Method for OFDM Systems in Rayleigh Fading Channel, IEEE Vehicular Technology Conference, pp.1-5, 2006.
DOI : 10.1109/VTCF.2006.479

E. Zhou, X. Hou, Z. Zhang, and H. Kayama, A Preamble Structure and Synchronization Method based on Central-Symmetric Sequence for OFDM Systems, VTC Spring 2008, IEEE Vehicular Technology Conference, pp.1478-1482, 2008.
DOI : 10.1109/VETECS.2008.347

Y. H. , K. , Y. Hahm, H. J. Jung, and I. Song, An Efficient Frequency Offset Estimator for Timing and Frequency Synchronization in OFDM Systems, IEEE Pacific Rim Conference on Communications, Computers and Signal Processing, pp.580-583, 1999.

M. Morelli, C. Kuo, and M. Pun, Synchronization Techniques for Orthogonal Frequency Division Multiple Access (OFDMA): A Tutorial Review, Proceedings of the IEEE, vol.95, issue.7, pp.1394-1427, 2007.
DOI : 10.1109/JPROC.2007.897979

M. Speth, F. Classen, and H. Meyr, Frame synchronization of OFDM systems in frequency selective fading channels, 1997 IEEE 47th Vehicular Technology Conference. Technology in Motion, pp.1807-1811, 1997.
DOI : 10.1109/VETEC.1997.605870

T. Pollet, M. Van-bladel, and M. Moeneclaey, BER sensitivity of OFDM systems to carrier frequency offset and Wiener phase noise, IEEE Transactions on Communications, vol.43, issue.2/3/4, pp.191-193, 1995.
DOI : 10.1109/26.380034

J. Van-de-beek, M. Sandell, and P. Borjesson, ML estimation of time and frequency offset in OFDM systems, IEEE Transactions on Signal Processing, vol.45, issue.7, pp.1800-1805, 1997.
DOI : 10.1109/78.599949

M. Morelli and U. Mengali, An Improved Frequency Offset Estimator for OFDM Applications, Communication Theory Mini-Conference, pp.106-109, 1999.

T. Bhatt, V. Sundaramurthy, J. Zhang, and D. Mccain, Initial Synchronization for 802.16e Downlink, 2006 Fortieth Asilomar Conference on Signals, Systems and Computers, pp.701-706, 2006.
DOI : 10.1109/ACSSC.2006.354839

P. Serena, M. Bertolini, and A. Vannucci, Optilux Toolbox Available: http://www.optilux.sourceforge A Block-Parallel Architecture for Initial and Fine Synchronization in OFDM Systems, IEEE International Conference on Communications (ICC), pp.4761-4765, 2009.

V. C. Kurapati, Analysis of IP Based Implementations of Adders and Multipliers in Submicron and Deep Submicron Technologies, Master of Science, 2008.

L. Sander, I. Jansen, N. Morita, H. Takeda, and . Tanaka, 20- Gb/s OFDM Transmission over 4,160-km SSMF Enabled by RF-Pilot Tone Phase Noise Compensation, " in Optical Fiber Communication Conference and Exposition and The National Fiber Optic Engineers Conference, 2007.

W. Shieh, Q. Yang, and Y. Ma, 107 Gb/s coherent optical OFDM transmission over 1000-km SSMF fiber using orthogonal band multiplexing, Optics Express, vol.16, issue.9, pp.6378-6386, 2008.
DOI : 10.1364/OE.16.006378

R. Bouziane, P. Milder, R. Koutsoyannis, Y. Benlachtar, J. Hoe et al., Dependence of Optical OFDM Transceiver ASIC Complexity on FFT Size, National Fiber Optic Engineers Conference, pp.1-3, 2012.
DOI : 10.1364/NFOEC.2012.JW2A.58

S. He and M. Torkelson, A New Approach to Pipeline FFT Processor, The 10th International Parallel Processing Symposium, pp.766-770, 1996.

P. Udupa, O. Sentieys, and L. Bramerie, Design and Implementation of DSP algorithms for 100Gbps Optical OFDM System, XXIV Colloque GRETSI, 2013.

D. Lee and K. Cheun, A New Symbol Timing Recovery Algorithm for OFDM Systems, IEEE Transactions on Consumer Electronics, vol.43, issue.3, pp.767-775, 1997.

S. Randel, S. Adhikari, and S. Jansen, Analysis of RF-Pilot-Based Phase Noise Compensation for Coherent Optical OFDM Systems, IEEE Photonics Technology Letters, vol.22, issue.17, pp.1288-1290, 2010.
DOI : 10.1109/LPT.2010.2053528

S. Hussin, K. Puntsri, and R. Noe, Improvement of RF-Pilot Phase Noise Compensation for Coherent Optical OFDM Systems via CPE Equalizer, 2013.