Digital predistortion for RSOAs as external modulators in radio over fiber systems

doi:10.1364/OE.19.017641

Digital predistortion for RSOAs as external modulators in radio over fiber systems

Zhansheng Liu, Manuel Alberto Violas, and Nuno Borges Carvalho »View Author Affiliations

Optics Express, Vol. 19, Issue 18, pp. 17641-17646 (2011)
http://dx.doi.org/10.1364/OE.19.017641

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Abstract

Reflective semiconductor optical amplifiers (RSOAs) can be used as external modulators in radio over fiber (RoF) links due to their amplification and modulation characteristics and colorless property. The nonlinear distortion of RSOA, however, limits its dynamic range. In this paper we demonstrate digital predistortion (DPD) linearization techniques to improve the linearity of RSOA external modulators. 64 quadrature amplitude modulation (QAM) signals are utilized to extract the model parameters. The dynamic AM/AM and AM/PM characteristics and power spectral densities of the modulated signals from the RSOA are demonstrated without and with DPD. Experimental results show clearly that the nonlinear distortion of RSOA external modulators in RoF links can be compensated using DPD linearization techniques.

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(230.4110) Optical devices : Modulators
(250.5980) Optoelectronics : Semiconductor optical amplifiers

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 30, 2011
Revised Manuscript: August 4, 2011
Manuscript Accepted: August 13, 2011
Published: August 23, 2011

Citation
Zhansheng Liu, Manuel Alberto Violas, and Nuno Borges Carvalho, "Digital predistortion for RSOAs as external modulators in radio over fiber systems," Opt. Express 19, 17641-17646 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-18-17641

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References

D. Wake, A. Nkansah, and N. J. Gomes, “Radio over fiber link design for next generation wireless systems,” J. Lightwave Technol.28(16), 2456–2464 (2010). [CrossRef]
M. J. Crisp, S. Li, A. Wonfor, R. V. Penty, and I. H. White, “Demonstration of radio over fibre distributed antenna network for combined in-building WLAN and 3G coverage,” in National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper JThA81.
A. Hekkala, M. Lasanen, I. Harjula, L. C. Vieira, N. J. Gomes, A. Nkan, S. Bittner, F. Diehm, and V. Kotzsch, “Analysis of and compensation for non-ideal RoF links in DAS [Coordinated and Distributed MIMO],” IEEE Wireless Commun.17(3), 52–59 (2010). [CrossRef]
G. de Valicourt, M. A. Violas, D. Wake, F. Van Dijk, C. Ware, A. Enard, D. Maké, Z. Liu, M. Lamponi, G. H. Duan, and R. Brenot, “Radio over fiber access network architecture based on new optimized RSOA devices with large modulation bandwidth and high linearity,” IEEE Trans. Microw. Theory Tech.58(11), 3248–3258 (2010). [CrossRef]
X. Yu, T. Gibbon, and I. Monroy, “Bidirectional radio-over-fiber system with phase-modulation downlink and RF oscillator-free uplink using a reflective SOA,” IEEE Photon. Technol. Lett.20(24), 2180–2182 (2008). [CrossRef]
D. Wake, A. Nkansah, N. J. Gomes, G. de Valicourt, R. Brenot, M. Violas, Z. Liu, F. Ferreira, and S. Pato, “A comparison of radio over fiber link types for the support of wideband radio channels,” J. Lightwave Technol.28(16), 2416–2422 (2010). [CrossRef]
Z. Liu, M. Sadeghi, G. de Valicourt, R. Brenot, and M. Violas, “Experimental validation of a reflective semiconductor optical amplifier model used as a modulator in radio over fiber systems,” IEEE Photon. Technol. Lett.23(9), 576–578 (2011). [CrossRef]
E. Udvary and T. Berceli, “Improvements in the linearity of semiconductor optical amplifiers as external modulators,” IEEE Trans. Microw. Theory Tech.58(11), 3161–3166 (2010). [CrossRef]
J. Kim and K. Konstantinou, “Digital predistortion of wideband signals based on power amplifier model with memory,” Electron. Lett.37(23), 1417–1418 (2001). [CrossRef]
A. Zhu, P. J. Draxler, J. J. Yan, T. J. Brazil, D. F. Kimball, and P. M. Asbeck, “Open-loop digital predistorter for RF power amplifiers using dynamic deviation reduction-based Volterra series,” IEEE Trans. Microw. Theory Tech.56(7), 1524–1534 (2008). [CrossRef]
L. Guan and A. Zhu, “Low-cost FPGA implementation of Volterra series-based digital predistorter for RF power amplifier,” IEEE Trans. Microw. Theory Tech.58(4), 866–872 (2010). [CrossRef]
H. Cao, H. M. Nemati, A. S. Tehrani, T. Eriksson, J. Grahn, and C. Fager, “Linearization of efficiency-optimize dynamic load modulation transmitter architectures,” IEEE Trans. Microw. Theory Tech.58(4), 873–881 (2010). [CrossRef]
L. Ding, G. T. Zhou, D. R. Morgan, Z. Ma, J. S. Kenney, J. Kim, and C. R. Giardina, “A robust digital baseband predistorter constructed using memory polynomials,” IEEE Trans. Commun.52(1), 159–165 (2004). [CrossRef]
D. R. Morgan, Z. Ma, J. Kim, M. G. Zierdt, and J. Pastalan, “A generalized memory polynomial model for digital predistortion of RF power amplifiers,” IEEE Trans. Signal Process.54(10), 3852–3860 (2006). [CrossRef]

Asbeck, P. M.
Berceli, T.
Bittner, S.
Brazil, T. J.
Brenot, R.
Cao, H.
de Valicourt, G.
Diehm, F.
Ding, L.
Draxler, P. J.
Duan, G. H.
Enard, A.
Eriksson, T.
Fager, C.
Ferreira, F.
Giardina, C. R.
Gibbon, T.
Gomes, N. J.
Grahn, J.
Guan, L.
Harjula, I.
Hekkala, A.
Kenney, J. S.
Kim, J.
Kimball, D. F.
Konstantinou, K.
Kotzsch, V.
Lamponi, M.
Lasanen, M.
Liu, Z.
Ma, Z.
Maké, D.
Monroy, I.
Morgan, D. R.
Nemati, H. M.
Nkan, A.
Nkansah, A.
Pastalan, J.
Pato, S.
Sadeghi, M.
Tehrani, A. S.
Udvary, E.
Van Dijk, F.
Vieira, L. C.
Violas, M.
Violas, M. A.
Wake, D.
Ware, C.
Yan, J. J.
Yu, X.
Zhou, G. T.
Zhu, A.
Zierdt, M. G.

Electron. Lett.

J. Kim and K. Konstantinou, “Digital predistortion of wideband signals based on power amplifier model with memory,” Electron. Lett.37(23), 1417–1418 (2001). [CrossRef]

IEEE Photon. Technol. Lett.

X. Yu, T. Gibbon, and I. Monroy, “Bidirectional radio-over-fiber system with phase-modulation downlink and RF oscillator-free uplink using a reflective SOA,” IEEE Photon. Technol. Lett.20(24), 2180–2182 (2008). [CrossRef]
Z. Liu, M. Sadeghi, G. de Valicourt, R. Brenot, and M. Violas, “Experimental validation of a reflective semiconductor optical amplifier model used as a modulator in radio over fiber systems,” IEEE Photon. Technol. Lett.23(9), 576–578 (2011). [CrossRef]

IEEE Trans. Commun.

L. Ding, G. T. Zhou, D. R. Morgan, Z. Ma, J. S. Kenney, J. Kim, and C. R. Giardina, “A robust digital baseband predistorter constructed using memory polynomials,” IEEE Trans. Commun.52(1), 159–165 (2004). [CrossRef]

IEEE Trans. Microw. Theory Tech.

A. Zhu, P. J. Draxler, J. J. Yan, T. J. Brazil, D. F. Kimball, and P. M. Asbeck, “Open-loop digital predistorter for RF power amplifiers using dynamic deviation reduction-based Volterra series,” IEEE Trans. Microw. Theory Tech.56(7), 1524–1534 (2008). [CrossRef]
L. Guan and A. Zhu, “Low-cost FPGA implementation of Volterra series-based digital predistorter for RF power amplifier,” IEEE Trans. Microw. Theory Tech.58(4), 866–872 (2010). [CrossRef]
H. Cao, H. M. Nemati, A. S. Tehrani, T. Eriksson, J. Grahn, and C. Fager, “Linearization of efficiency-optimize dynamic load modulation transmitter architectures,” IEEE Trans. Microw. Theory Tech.58(4), 873–881 (2010). [CrossRef]
E. Udvary and T. Berceli, “Improvements in the linearity of semiconductor optical amplifiers as external modulators,” IEEE Trans. Microw. Theory Tech.58(11), 3161–3166 (2010). [CrossRef]
G. de Valicourt, M. A. Violas, D. Wake, F. Van Dijk, C. Ware, A. Enard, D. Maké, Z. Liu, M. Lamponi, G. H. Duan, and R. Brenot, “Radio over fiber access network architecture based on new optimized RSOA devices with large modulation bandwidth and high linearity,” IEEE Trans. Microw. Theory Tech.58(11), 3248–3258 (2010). [CrossRef]

IEEE Trans. Signal Process.

D. R. Morgan, Z. Ma, J. Kim, M. G. Zierdt, and J. Pastalan, “A generalized memory polynomial model for digital predistortion of RF power amplifiers,” IEEE Trans. Signal Process.54(10), 3852–3860 (2006). [CrossRef]

IEEE Wireless Commun.

A. Hekkala, M. Lasanen, I. Harjula, L. C. Vieira, N. J. Gomes, A. Nkan, S. Bittner, F. Diehm, and V. Kotzsch, “Analysis of and compensation for non-ideal RoF links in DAS [Coordinated and Distributed MIMO],” IEEE Wireless Commun.17(3), 52–59 (2010). [CrossRef]

J. Lightwave Technol.

Other

M. J. Crisp, S. Li, A. Wonfor, R. V. Penty, and I. H. White, “Demonstration of radio over fibre distributed antenna network for combined in-building WLAN and 3G coverage,” in National Fiber Optic Engineers Conference, OSA Technical Digest Series (CD) (Optical Society of America, 2007), paper JThA81.

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