Real-time OFDM transmitter beyond 100 Gbit/s

doi:10.1364/OE.19.012740

Real-time OFDM transmitter beyond 100 Gbit/s

R. Schmogrow, M. Winter, D. Hillerkuss, B. Nebendahl, S. Ben-Ezra, J. Meyer, M. Dreschmann, M. Huebner, J. Becker, C. Koos, W. Freude, and J. Leuthold »View Author Affiliations

Optics Express, Vol. 19, Issue 13, pp. 12740-12749 (2011)
http://dx.doi.org/10.1364/OE.19.012740

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Abstract

Real-time OFDM transmitters breaking the 100 Gbit/s barrier require high-performance, usually FPGA-based digital signal processing. Especially the Fourier transform as a key operation of any OFDM system must be optimized with respect to performance and chip area utilization. Here, we demonstrate an alternative to the widely adopted fast Fourier transform algorithm. Based on an extensive yet optimized use of pre-set look-up tables, our FPGA implementation supports fast reconfigurable channel equalization and switching times in the nanosecond range without re-loading any code. We demonstrate the potential of the concept by realizing the first real-time single polarization OFDM transmitter generating a 101.5 Gbit/s data stream by modulating 58 subcarriers with 16QAM.

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: April 14, 2011
Revised Manuscript: June 4, 2011
Manuscript Accepted: June 4, 2011
Published: June 16, 2011

Citation
R. Schmogrow, M. Winter, D. Hillerkuss, B. Nebendahl, S. Ben-Ezra, J. Meyer, M. Dreschmann, M. Huebner, J. Becker, C. Koos, W. Freude, and J. Leuthold, "Real-time OFDM transmitter beyond 100 Gbit/s," Opt. Express 19, 12740-12749 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-13-12740

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References

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