## 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)

Acrobat PDF (960 KB)

### Abstract

A real-time receiver for the coherent optical orthogonal frequency-division multiplexing (CO-OFDM) detection is realized in a field-programmable gate array (FPGA). Each building block of the CO-OFDM receiver, such as symbol synchronization, channel estimation, and phase estimation is described and discussed in respect of special technical requirements of real-time implementation. The real-time receiver is successfully demonstrated with a receiver sampling rate of 2.5-Gsamples/s to receive a subband of 53.3-Gb/s multiband CO-OFDM signal. The measured bit error rate (BER) is as low as $3.7\times 10^{-8}$ which is a record in real-time or offline CO-OFDM demonstration.

© 2010 IEEE

**Citation**

Noriaki Kaneda, Qi Yang, Xiang Liu, S. Chandrasekhar, William Shieh, and Young-Kai Chen, "Real-Time 2.5 GS/s Coherent Optical Receiver for 53.3-Gb/s Sub-Banded OFDM," J. Lightwave Technol. **28**, 494-501 (2010)

http://www.opticsinfobase.org/jlt/abstract.cfm?URI=jlt-28-4-494

Sort: Year | Journal | Reset

### References

- F. Derr, "Coherent optical QPSK intradyne system: Concept and digital receiver realization," J. Lightw. Technol. 10, 1290-1296 (1992).
- L. G. Kazovsky, "Phase- and polarization-diversity coherent optical techniques," J. Lightw. Technol. 7, 279-292 (1989).
- M. G. Taylor, "Coherent detection method using DSP for demodulation of signal and subsequent equalization of propagation impairments," Photon. Technol. Lett. 16, 674-676 (2004).
- R. Noe, "Phase noise-tolerant synchronous QPSK/BPSK baseband-type intradyne receiver concept with feedforward carrier recovery," J. Lightw. Technol. 23, 802-808 (2005).
- W. Shieh, C. Athaudage, "Coherent optical orthogonal frequency division multiplexing," Electron. Lett. 42, 587-589 (2006).
- A. J. Lowery, J. Armstrong, "Orthogonal frequency division multiplexing for dispersion compensation of long-haul optical systems," Opt. Exp. 14, 2079-2084 (2006).
- S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over 4160-km SSMF," J. Lightw. Technol. 26, 6-15 (2008).
- S. Savory, "Digital filters for coherent optical receivers," Opt. Exp. 16, 804-817 (2008).
- N. Kaneda, A. Leven, "Coherent polarization-division-multiplexed QPSK receiver with fractionally spaced CMA for PMD compensation," Photon. Technol. Lett. 21, 203-205 (2009).
- Wireless LAN Medium Access Control (MAC) and Physical Layer Specifications (PHY) IEEE Standard 802.11a (1999).
- R. Dischler, F. Buchali, "Transmission of 1.2 Tb/s continuous waveband PDM-OFDM-FDM signal with spectral efficiency of 3.3 bits/s/Hz over 400 km of SSMF," OFC/NFOEC San DiegoCA (2009) Paper PDPC2.
- Q. Yang, Y. Tang, Y. Ma, W. Shieh, "Experimental demonstration and numerical simulation of 107-Gb/s high spectral efficiency coherent optical OFDM," J. Lightw. Technol. 27, 168-176 (2009).
- X. Liu, F. Buchali, "Improved nonlinear tolerance of 112-Gb/s PDM-OFDM in dispersion uncompensated transmission with efficient channel estimation," Proc. ECOC (2008) pp. 1-2.
- S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz spectral efficiency over 1 000 km of SSMF," J. Lightw. Technol. 27, 177-188 (2009).
- A. Sano, E. Yamada, H. Masuda, E. Yamazaki, T. Kobayashi, E. Yoshida, Y. Miyamoto, S. Matsuoka, R. Kudo, K. Ishihara, Y. Takatori, M. Mizouchi, K. Okada, K. Hagimoto, H. Yamazaki, S. Kamei, H. Ishii, "13.4-Tb/s (134$\,\times\,$111-Gb/s/ch) no-guard-interval coherent OFDM transmission over 3 600 km of SMF with 19-ps average PMD," Proc. ECOC (2008) pp. 1-2.
- A. Leven, N. Kaneda, Y.-K. Chen, "A real-time CMA-based 10 Gb/s polarization demultiplexing coherent receiver implmented in an FPGA," OFC/NFOEC San DiegoCA (2008).
- H. Sun, K.-T. Wu, K. Roberts, "Real-time measurements of a 40 Gb/s coherent system," Opt. Exp. 16, 873-879 (2008).
- T. Pfau, R. Peveling, J. Hauden, N. Grossard, H. Porte, Y. Achiam, S. Hoffman, S. K. Ibrahim, O. Adamczyk, S. Bhandare, D. Sandel, M. Porrman, R. Noe, "Coherent digital polarization diversity receiver for real-time polarization-multiplexed QPSK transmission at 2.8 Gb/s," Photon. Technol. Lett. 19, 1988-1990 (2007).
- S. Chen, Q. Yang, Y. Ma, W. Shieh, "Multi-gigabit real-time coherent optical OFDM receiver," Proc. OFC/NFOEC (2009) pp. 1-3.
- Q. Yang, N. Kaneda, X. Liu, S. Chandrasekhar, W. Shieh, Y. K. Chen, "Real-time coherent optical OFDM receiver at 2.5-GS/s for receiving a 54-Gb/s multi-band signal," Proc. OFC/NFOEC (2009) pp. 1-3.
- Y. Wang, Z. Pan, C. Yu, T. Luo, A. Sahin, A. E. Willner, "A multi-wavelength optical source based on supercontinuum generation using phase and intensity modulation at the line-spacing rate," Proc. ECOC (2003) pp. 1-2.
- T. M. Schmidl, D. C. Cox, "Robust frequency and timing synchronization for OFDM," IEEE Trans. Commun. 45, 1613-1621 (1997).
- W. Shieh, X. Yi, Y. Ma, Q. Yang, "Coherent optical OFDM: Has its time come? [Invited]," J. Opt. Netw. 7, 234-255 (2008).
- Q. Yang, N. Kaneda, X. Liu, W. Shieh, "Demonstration of frequency-domain averaging based channel estimation for 40-Gb/s CO-OFDM with high PMD," Proc. OFC/NFOEC (2009) pp. 1-3.
- A. J. Viterbi, A. M. Viterbi, "Nonlinear estimation of PSK-modulated carrier phase with application to burst digital transmission," IEEE Trans. Inf. Theory 29, 543-551 (1983).
- A. Leven, N. Kaneda, U.-T. Koc, Y.-K. Chen, "Frequency estimation in intradyne reception," Photon. Technol. Lett. 19, 366-368 (2007).
- N. Kaneda, A. Leven, Y.-K. Chen, "Block length effect on 5.0 Gbit/s real-time QPSK intradyne receivers with standard DFB laser," Electron. Lett. 43, 1106-1107 (2007).

## Cited By |

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article | Next Article »

OSA is a member of CrossRef.