Abstract

A novel multi-band digital predistortion (DPD) technique is proposed to linearize the subcarrier multiplexed radio-over-fiber (SCM-RoF) system transmitting sparse multi-band RF signal with large blank spectra between the constituent RF bands. DPD performs on the baseband signal of each individual RF band before up-conversion and RF combination. By disregarding the blank spectra, the processing bandwidth of the proposed DPD technique is greatly reduced, which is only determined by the baseband signal bandwidth of each individual RF band, rather than the entire bandwidth of the combined multi-band RF signal. Experimental demonstration is performed in a directly modulated SCM-RoF system transmitting two 64QAM modulated OFDM signals on 2.4GHz band and 3.6GHz band. Results show that the adjacent channel power (ACP) is suppressed by 15dB leading to significant improvement of the EVM performances of the signals on both of the two bands.

© 2013 OSA

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References

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  1. A. Attar, H. Li, and V. C. M. Leung, “Applications of fiber-connected distributed antenna systems in broadband wireless access,” in ICNC2012, 623–627 (2012).
  2. X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
    [CrossRef]
  3. P. Tang, L. Ong, A. Alphones, B. Luo, and M. Fujise, “PER and EVM measurements of a radio-over-fiber network for cellular and WLAN system applications,” J. Lightwave Technol.22(11), 2370–2376 (2004).
    [CrossRef]
  4. A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
    [CrossRef]
  5. Y. Shen, B. Hraimel, X. Zhang, and G. Cowan, “A novel analog broadband RF predistortion circuit to linearize electro-absorption modulators in multiband ofdm radio-over-fiber systems,” J. Lightwave Technol.58, 3327–3335 (2010).
  6. M. Huang, J. Fu, and S. Pan, “Linearized analog photonic links based on a dual-parallel polarization modulator,” Opt. Lett.37(11), 1823–1825 (2012).
    [CrossRef] [PubMed]
  7. Z. Liu, M. A. Violas, and N. B. Carvalho, “Digital predistortion for RSOAs as external modulators in radio over fiber systems,” Opt. Express19(18), 17641–17646 (2011).
    [CrossRef] [PubMed]
  8. A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
    [CrossRef]
  9. 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]
  10. K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
    [CrossRef]
  11. T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
    [CrossRef]
  12. L. Vieira, N. J. Gomes, A. Nkansah, and F. van Dijk, “Behavioral modeling of radio-over-fiber links using memory polynomials,” in IEEE Topical Meeting on Microwave Photonics 2010, 85- 88 (2010).

2012

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

M. Huang, J. Fu, and S. Pan, “Linearized analog photonic links based on a dual-parallel polarization modulator,” Opt. Lett.37(11), 1823–1825 (2012).
[CrossRef] [PubMed]

2011

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Z. Liu, M. A. Violas, and N. B. Carvalho, “Digital predistortion for RSOAs as external modulators in radio over fiber systems,” Opt. Express19(18), 17641–17646 (2011).
[CrossRef] [PubMed]

2010

Y. Shen, B. Hraimel, X. Zhang, and G. Cowan, “A novel analog broadband RF predistortion circuit to linearize electro-absorption modulators in multiband ofdm radio-over-fiber systems,” J. Lightwave Technol.58, 3327–3335 (2010).

2009

K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
[CrossRef]

A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
[CrossRef]

2006

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

2004

P. Tang, L. Ong, A. Alphones, B. Luo, and M. Fujise, “PER and EVM measurements of a radio-over-fiber network for cellular and WLAN system applications,” J. Lightwave Technol.22(11), 2370–2376 (2004).
[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]

Alphones, A.

Carvalho, N. B.

Cowan, G.

Y. Shen, B. Hraimel, X. Zhang, and G. Cowan, “A novel analog broadband RF predistortion circuit to linearize electro-absorption modulators in multiband ofdm radio-over-fiber systems,” J. Lightwave Technol.58, 3327–3335 (2010).

Dai, Y.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Ding, L.

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]

Fan, B.

K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
[CrossRef]

Ferreira, A.

A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
[CrossRef]

Fonseca, D.

A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
[CrossRef]

Fu, J.

Fujise, M.

Fuse, M.

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

Giardina, C. R.

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]

Gomes, N.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

Hekkala, A.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

Hiivala, M.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

Hraimel, B.

Y. Shen, B. Hraimel, X. Zhang, and G. Cowan, “A novel analog broadband RF predistortion circuit to linearize electro-absorption modulators in multiband ofdm radio-over-fiber systems,” J. Lightwave Technol.58, 3327–3335 (2010).

Huang, M.

Kenney, J. S.

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]

Kim, J.

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]

Lasanen, M.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

Li, Y.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Lin, J.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Liu, G.

K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
[CrossRef]

Liu, Z.

Luo, B.

Ma, Z.

K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
[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]

Masuda, K.

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

Monteiro, P.

A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
[CrossRef]

Morgan, D. R.

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]

Nakaso, M.

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

Niiho, T.

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

Nkansah, A.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

Ong, L.

Pan, S.

Perttu, J.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

Ribeiro, R.

A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
[CrossRef]

Sasai, H.

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

Shen, X.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
[CrossRef]

Shen, Y.

Y. Shen, B. Hraimel, X. Zhang, and G. Cowan, “A novel analog broadband RF predistortion circuit to linearize electro-absorption modulators in multiband ofdm radio-over-fiber systems,” J. Lightwave Technol.58, 3327–3335 (2010).

Silveira, T.

A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
[CrossRef]

Sun, X.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Tang, P.

Utsumi, K.

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

Vieira, L.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[CrossRef]

Violas, M. A.

Wu, J.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Xu, K.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Zhang, X.

Y. Shen, B. Hraimel, X. Zhang, and G. Cowan, “A novel analog broadband RF predistortion circuit to linearize electro-absorption modulators in multiband ofdm radio-over-fiber systems,” J. Lightwave Technol.58, 3327–3335 (2010).

Zheng, K.

K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
[CrossRef]

Zhou, G. T.

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 Magazine. Vehicular. Tech.

K. Zheng, B. Fan, Z. Ma, G. Liu, and X. Shen, “Multihop cellular networks toward LTE-Advanced,” IEEE Magazine. Vehicular. Tech.4(3), 40–47 (2009).
[CrossRef]

IEEE Microw.Theory Tech.

T. Niiho, M. Nakaso, K. Masuda, H. Sasai, K. Utsumi, and M. Fuse, “Transmission performance of multichannel wireless LAN system based on radio-over-fiber techniques,” IEEE Microw.Theory Tech.54(2), 980–989 (2006).
[CrossRef]

IEEE Photon. Technol. Lett.

A. Ferreira, T. Silveira, D. Fonseca, R. Ribeiro, and P. Monteiro, “Highly linear integrated optical transmitter for subcarrier multiplexed systems,” IEEE Photon. Technol. Lett.21(7), 438–440 (2009).
[CrossRef]

IEEE Trans. Circ. Syst.

A. Hekkala, M. Hiivala, M. Lasanen, J. Perttu, L. Vieira, N. Gomes, and A. Nkansah, “Predistortion of radio over fiber links:algorithms,implementation,and measurements,” IEEE Trans. Circ. Syst.59(3), 664–672 (2012).
[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]

J. Lightwave Technol.

P. Tang, L. Ong, A. Alphones, B. Luo, and M. Fujise, “PER and EVM measurements of a radio-over-fiber network for cellular and WLAN system applications,” J. Lightwave Technol.22(11), 2370–2376 (2004).
[CrossRef]

Y. Shen, B. Hraimel, X. Zhang, and G. Cowan, “A novel analog broadband RF predistortion circuit to linearize electro-absorption modulators in multiband ofdm radio-over-fiber systems,” J. Lightwave Technol.58, 3327–3335 (2010).

J.Opt. Commun. Netw.

X. Sun, K. Xu, X. Shen, Y. Li, Y. Dai, J. Wu, and J. Lin, “New hierarchical architecture for ubiquitous wireless sensing and access with improved coverage using CWDM-ROF links,” J.Opt. Commun. Netw.3(10), 790–796 (2011).
[CrossRef]

Opt. Express

Opt. Lett.

Other

A. Attar, H. Li, and V. C. M. Leung, “Applications of fiber-connected distributed antenna systems in broadband wireless access,” in ICNC2012, 623–627 (2012).

L. Vieira, N. J. Gomes, A. Nkansah, and F. van Dijk, “Behavioral modeling of radio-over-fiber links using memory polynomials,” in IEEE Topical Meeting on Microwave Photonics 2010, 85- 88 (2010).

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Figures (4)

Fig. 1
Fig. 1

Block diagram of the multi-band predistortion technique for SCM-RoF system.

Fig. 2
Fig. 2

Experimental setup.

Fig. 3
Fig. 3

(a) RF spectrum of the entire SCM signal; (b) RF spectrum of the signal on 2.412GHz, (c) RF spectrum of the signal on 3.6GHz. (blue dash line for without DPD, red solid line for with DPD).

Fig. 4
Fig. 4

(a) and (b) Constellations of the received signal on 2.412GHz without and with the proposed DPD technique; (c) and (b) constellations of the received signal on 3.6GHz without and with the proposed DPD technique.

Tables (1)

Tables Icon

Table 1 Extracted Coefficients of the Predistorter

Equations (12)

Equations on this page are rendered with MathJax. Learn more.

z(n)= q p K pq x(nq) | x(nq) | p1
v out = p K p ( v in /g) p
v in (n) = i=1 I X i (n)cos(2π f i t+ φ i ) | (n1)Δt<t<nΔt
v out (n)= i=1 I { [ q p K pq X i (nq) | X i (nq) | 1 2 p1 f i = j=1 p ± f j j=1 p | X j (nq) | ]cos( 2π f i t+ φ i ) }
Z i (n)= q p K pq X i (nq) | X i (nq) | 1 2 p1 f i = j=1 p ± f j j=1 p | X j (nq) |
u i pq(m) (n)= Y i (nq) | Y i (nq) | j=1 f i = j=1 p ± f j p | 1 g i Y j (nq) |
z i =U i k i
k ^ i =(U i H U i ) -1 U i H z i
U 1 =[ u 1 10(1) ,u 1 11(1) ,u 1 12(1) , u 1 30(1) , u 1 31(1) , u 1 32(1) , u 1 30(2) , u 1 31(2) , u 1 32(2) ]
k ^ 1 = [ K 1 10(1) , K 1 11(1) , K 1 12(1) , K 1 30(1) , K 1 31(1) , K 1 32(1) , K 1 30(2) , K 1 31(2) , K 1 32(2) ] T
U 2 =[ u 2 10(1) ,u 2 11(1) ,u 2 12(1) , u 2 30(1) , u 2 31(1) , u 2 32(1) , u 2 30(2) , u 2 31(2) , u 2 32(2) ]
k ^ 2 = [ K 2 10(1) , K 2 11(1) , K 2 12(1) , K 2 30(1) , K 2 31(1) , K 2 32(1) , K 2 30(2) , K 2 31(2) , K 2 32(2) ] T

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