Abstract

Nyquist pulse shaping can be used to increase the spectral efficiency (SE) by narrowing the signal spectrum without introducing intersymbol interference in a wavelength-division-multiplexed (WDM) system. In this paper, we investigate the complexity and performance of pulse shaping at the transmitter side using digital finite-impulse-response (FIR) or frequency-domain-equalization (FDE) filters to increase the SE in a polarization-division-multiplexed quadrature-phase-shift-keyed WDM system. Simulation results show that FIR filters with 17 taps allow for a reduction in channel spacing to 1.1 times the symbol rate within a 1 dB penalty. The root-raised-cosine spectrum shape has better performances than the raised-cosine spectrum shape with that channel spacing. An FDE filter with a fast Fourier transform size of 64 and an overlap length of 8 points performs slightly better than a 17-tap FIR filter.

© 2012 IEEE

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  1. W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).
  2. X. Liu, S. Chandrasekhar, B. Zhu, P. J. Winzer, A. H. Gnauck, D. W. Peckham, "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," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.
  3. J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. Lucero, O. Sinkin, W. Patterson, A. Pilipetskii, G. Mohs, N. S. Bergano, "Transmission of 96$\,\times\,$100G pre-filtered PDM-RZ-QPSK channels with 300% spectral efficiency over 10?608 km and 400% spectral efficiency over 4368 km," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.
  4. G. Bosco, A. Carena, V. Curri, P. Poggiolini, E. Torrengo, F. Forghieri, "Investigation on the robustness of a Nyquist-WDM terabit super channel to transmitter and receiver non-idealities," Proc. Eur. Conf. Opt. Commun. (2010) pp. 1-3.
  5. M. Salsi, C. Koebele, P. Tran, H. Mardoyan, E. Dutisseuil, J. Renaudier, M. Bigot-Astruc, L. Provost, S. Richard, P. Sillard, S. Bigo, G. Charlet, "Transmission of 96$\,\times\,$100 Gb/s with 23% super-FEC overhead over 11?680 km, using optical spectral engineering," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.
  6. C. Xie, G. Raybon, P. J. Winzer, "Hybrid 224-Gb/s and 112-Gb/s PDM-QPSK transmission at 50-GHz channel spacing over 1200-km dispersion-managed LEAF® spans and 3 ROADMs," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.
  7. K. Igarashi, Y. Mori, K. Katoh, K. Kikuchi, "Bit-error rate performance of Nyquist wavelength-division multiplexed quadrature phase-shift keying optical signals," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.
  8. X. Zhou, L. Nelson, P. Magill, R. Isaac, B. Zhu, D. W. Peckham, P. Borel, K. Carlson, "8450-Gb/s, 50-GHz-spaced, PDM-32 QAM transmission over 400 km and one 50 GHz-grid ROADM," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.
  9. B. Châtelain, C. Laperle, K. Roberts, X. Xu, M. Chagnon, A. Borowiec, F. Gagnon, J. Cartledge, D. V. Plant, "Optimized pulse shaping for intra-channel nonlinearities mitigation in a 10 Gbaud dual-polarization 16-QAM system," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.
  10. S. J. Savory, "Digital filters for coherent optical receivers," Opt. Exp. 16, 804-817 (2008).
  11. D. Falconer, S. L. Ariyavisitakul, A. Benyamin-Seeyar, B. Eidson, "Frequency domain equalization for single-carrier broadband wireless systems," IEEE Commun. Mag. 40, 58-66 (2002).
  12. F. Pancaldi, G. M. Vitetta, R. Kalbasi, N. AI-Dhahir, M. Uysal, H. Mheidat, "Single-carrier frequency domain equalization," IEEE Signal Process. Mag. 25, 37-56 (2008).
  13. Md. S. Faruk, K. Kikuchi, "Adaptive frequency-domain equalization in digital coherent optical receivers," Opt. Exp. 19, 12789-12798 (2011).
  14. R. Kudo, T. Kobayashi, K. Ishihara, Y. Takatori, A. Sano, Y. Miyamoto, "Coherent optical single carrier transmission using overlap frequency domain equalization for long-haul optical systems," J. Lightw. Technol. 27, 3721-3728 (2009).
  15. J. C. Geyer, C. R. S. Fludger, T. Duthel, C. Schulien, B. Schaauss, "Efficient frequency domain chromatic dispersion compensation in a coherent Polmux QPSK-receiver," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.
  16. C. Chen, Q. Zhuge, D. V. Plant, "Reduced-guard-interval CO-OFDM with overlapped frequency-domain CD and PMD equalization," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.
  17. B. Spinnler, "Equalizer design and complexity for digital coherent receivers," IEEE J. Sel. Topics Quantum Electron. 16, 1180-1192 (2010).
  18. J. Wang, C. Xie, Z. Pan, "Generation of spectrally efficient Nyquist-WDM QPSK signals using DSP techniques at transmitter," presented at the Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. Los AngelesCA (2012) Paper OM3H.5.
  19. J. G. Proakis, Digital Communications (McGraw-Hill, 2001).
  20. J. Leibrich, W. Rosenkranz, "Frequency domain equalization with minimum complexity in coherent optical transmission systems," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.
  21. H. Wang, C. Chan, C. Choy, "High speed CMOS digital-to-analog converter with linear interpolator," IEEE Trans. Consum. Electron. 46, 1137-1142 (2000).
  22. P. J. Winzer, M. Pfennigbauer, R.-J. Essiambre, "Coherent crosstalk in ultradense WDM systems," J. Lightw. Technol. 23, 1734-1744 (2005).

2011

Md. S. Faruk, K. Kikuchi, "Adaptive frequency-domain equalization in digital coherent optical receivers," Opt. Exp. 19, 12789-12798 (2011).

2010

B. Spinnler, "Equalizer design and complexity for digital coherent receivers," IEEE J. Sel. Topics Quantum Electron. 16, 1180-1192 (2010).

2009

R. Kudo, T. Kobayashi, K. Ishihara, Y. Takatori, A. Sano, Y. Miyamoto, "Coherent optical single carrier transmission using overlap frequency domain equalization for long-haul optical systems," J. Lightw. Technol. 27, 3721-3728 (2009).

2008

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

S. J. Savory, "Digital filters for coherent optical receivers," Opt. Exp. 16, 804-817 (2008).

F. Pancaldi, G. M. Vitetta, R. Kalbasi, N. AI-Dhahir, M. Uysal, H. Mheidat, "Single-carrier frequency domain equalization," IEEE Signal Process. Mag. 25, 37-56 (2008).

2005

P. J. Winzer, M. Pfennigbauer, R.-J. Essiambre, "Coherent crosstalk in ultradense WDM systems," J. Lightw. Technol. 23, 1734-1744 (2005).

2002

D. Falconer, S. L. Ariyavisitakul, A. Benyamin-Seeyar, B. Eidson, "Frequency domain equalization for single-carrier broadband wireless systems," IEEE Commun. Mag. 40, 58-66 (2002).

2000

H. Wang, C. Chan, C. Choy, "High speed CMOS digital-to-analog converter with linear interpolator," IEEE Trans. Consum. Electron. 46, 1137-1142 (2000).

IEEE Commun. Mag.

D. Falconer, S. L. Ariyavisitakul, A. Benyamin-Seeyar, B. Eidson, "Frequency domain equalization for single-carrier broadband wireless systems," IEEE Commun. Mag. 40, 58-66 (2002).

IEEE J. Sel. Topics Quantum Electron.

B. Spinnler, "Equalizer design and complexity for digital coherent receivers," IEEE J. Sel. Topics Quantum Electron. 16, 1180-1192 (2010).

IEEE Signal Process. Mag.

F. Pancaldi, G. M. Vitetta, R. Kalbasi, N. AI-Dhahir, M. Uysal, H. Mheidat, "Single-carrier frequency domain equalization," IEEE Signal Process. Mag. 25, 37-56 (2008).

IEEE Trans. Consum. Electron.

H. Wang, C. Chan, C. Choy, "High speed CMOS digital-to-analog converter with linear interpolator," IEEE Trans. Consum. Electron. 46, 1137-1142 (2000).

J. Lightw. Technol.

P. J. Winzer, M. Pfennigbauer, R.-J. Essiambre, "Coherent crosstalk in ultradense WDM systems," J. Lightw. Technol. 23, 1734-1744 (2005).

R. Kudo, T. Kobayashi, K. Ishihara, Y. Takatori, A. Sano, Y. Miyamoto, "Coherent optical single carrier transmission using overlap frequency domain equalization for long-haul optical systems," J. Lightw. Technol. 27, 3721-3728 (2009).

Opt. Exp.

Md. S. Faruk, K. Kikuchi, "Adaptive frequency-domain equalization in digital coherent optical receivers," Opt. Exp. 19, 12789-12798 (2011).

Opt. Exp.

W. Shieh, H. Bao, Y. Tang, "Coherent optical OFDM: Theory and design," Opt. Exp. 16, 841-859 (2008).

S. J. Savory, "Digital filters for coherent optical receivers," Opt. Exp. 16, 804-817 (2008).

Other

X. Liu, S. Chandrasekhar, B. Zhu, P. J. Winzer, A. H. Gnauck, D. W. Peckham, "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," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.

J.-X. Cai, Y. Cai, C. R. Davidson, D. G. Foursa, A. Lucero, O. Sinkin, W. Patterson, A. Pilipetskii, G. Mohs, N. S. Bergano, "Transmission of 96$\,\times\,$100G pre-filtered PDM-RZ-QPSK channels with 300% spectral efficiency over 10?608 km and 400% spectral efficiency over 4368 km," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.

G. Bosco, A. Carena, V. Curri, P. Poggiolini, E. Torrengo, F. Forghieri, "Investigation on the robustness of a Nyquist-WDM terabit super channel to transmitter and receiver non-idealities," Proc. Eur. Conf. Opt. Commun. (2010) pp. 1-3.

M. Salsi, C. Koebele, P. Tran, H. Mardoyan, E. Dutisseuil, J. Renaudier, M. Bigot-Astruc, L. Provost, S. Richard, P. Sillard, S. Bigo, G. Charlet, "Transmission of 96$\,\times\,$100 Gb/s with 23% super-FEC overhead over 11?680 km, using optical spectral engineering," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.

C. Xie, G. Raybon, P. J. Winzer, "Hybrid 224-Gb/s and 112-Gb/s PDM-QPSK transmission at 50-GHz channel spacing over 1200-km dispersion-managed LEAF® spans and 3 ROADMs," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.

K. Igarashi, Y. Mori, K. Katoh, K. Kikuchi, "Bit-error rate performance of Nyquist wavelength-division multiplexed quadrature phase-shift keying optical signals," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.

X. Zhou, L. Nelson, P. Magill, R. Isaac, B. Zhu, D. W. Peckham, P. Borel, K. Carlson, "8450-Gb/s, 50-GHz-spaced, PDM-32 QAM transmission over 400 km and one 50 GHz-grid ROADM," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.

B. Châtelain, C. Laperle, K. Roberts, X. Xu, M. Chagnon, A. Borowiec, F. Gagnon, J. Cartledge, D. V. Plant, "Optimized pulse shaping for intra-channel nonlinearities mitigation in a 10 Gbaud dual-polarization 16-QAM system," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.

J. C. Geyer, C. R. S. Fludger, T. Duthel, C. Schulien, B. Schaauss, "Efficient frequency domain chromatic dispersion compensation in a coherent Polmux QPSK-receiver," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.

C. Chen, Q. Zhuge, D. V. Plant, "Reduced-guard-interval CO-OFDM with overlapped frequency-domain CD and PMD equalization," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2011) pp. 1-3.

J. Wang, C. Xie, Z. Pan, "Generation of spectrally efficient Nyquist-WDM QPSK signals using DSP techniques at transmitter," presented at the Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. Los AngelesCA (2012) Paper OM3H.5.

J. G. Proakis, Digital Communications (McGraw-Hill, 2001).

J. Leibrich, W. Rosenkranz, "Frequency domain equalization with minimum complexity in coherent optical transmission systems," Proc. Opt. Fiber Commun./Nat. Fiber Opt. Eng. Conf. (2010) pp. 1-3.

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