Abstract

We present an implementation of a power-efficient optical network unit (ONU) for elastic-bandwidth coherent interleaved frequency-domain multiple access passive optical network (IFDMA-PON) uplink. The ONU for a 12 Gbps quadrature phase-shift keying (QPSK) signal is implemented on a 40 nm copper CMOS process field programmable gate array. By employing polar-coordinate transformed mapping of the PSK signal, the circuit size of the ONU is drastically reduced. The power consumption of the real-time IFDMA modulation circuit is 0.82 W, which achieves 90% reduction in power consumption compared to conventional OFDMA-PON systems. Finally, elastic-bandwidth QPSK signal generations and error-free detection are experimentally demonstrated: 6 Gbps at ONUs 1 and 2, 3 Gbps at ONU1, and 9 Gbps at ONU2.

© 2013 Optical Society of America

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  1. W.  Shieh, I.  Djordjevic, Orthogonal Frequency Division Multiplexing for Optical Communications, Academic, 2009.
  2. N.  Cvijetic, D.  Qian, J.  Hu, T.  Wang, “44-Gb/s/λ upstream OFDMA-PON transmission with polarization-insensitive source-free ONUs,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), San Diego, CA, Mar. 2010, paper OTuO2.
  3. N.  Cvijetic, N.  Prasad, D.  Qian, J.  Howard, T.  Wang, “Computationally-efficient DSP-based MIMO equalization for OSNR gains in 40  Gb/s OFDMA-PON,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK6.
  4. B.  Charbonnier, N.  Brochier, P.  Chanclou, “(O)FDMA PON over a legacy 30 dB ODN,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK1.
  5. N.  Cvijetic, “OFDM for next-generation optical access networks,” J. Lightwave Technol., vol.  30, no. 4, pp. 384–398, Feb. 2012.
    [CrossRef]
  6. N.  Yoshimoto, J.  Kanji, S.  Kim, N.  Iiyama, J.  Terada, “DSP-based optical access approaches for enhancing NG-PON2 systems,” IEEE Commun. Mag., vol.  51, no. 3, pp. 58–64, Mar. 2013.
    [CrossRef]
  7. D.  Qian, S.-H.  Fan, N.  Cvijetic, J.  Hu, T.  Wang, “64/32/16QAM-OFDM using direct-detection for 40G-OFDMA-PON downstream,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OMG4.
  8. U.  Sorger, I. D.  Broeck, M.  Schnell, “Interleaved FDMA—a new spread-spectrum multiple-access scheme,” in IEEE Int. Conf. on Communications (ICC), Atlanta, GA, vol. 2, June 1998, pp. 1013–1017.
  9. T.  Frank, A.  Klein, E.  Costa, E.  Schulz, “IFDMA—a promising multiple access scheme for future mobile radio systems,” in Proc. 16th Int. Symp. on Personal, Indoor and Mobile Radio Communications, Berlin, Germany, vol. 2, Sept. 2005, pp. 1214–1218.
  10. Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.
  11. D. J. F.  Barros, J. M.  Kahn, “Optical modulator optimization for orthogonal frequency-division multiplexing,” J. Lightwave Technol., vol.  27, no. 13, pp. 2370–2378, July 2009.
  12. K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.
  13. M.  Morelli, C.-C. J.  Kuo, M.-O.  Pun, “Synchronization techniques for orthogonal frequency division multiple access,” Proc. IEEE, vol.  95, no. 7, pp. 1394–1427, July 2007.
    [CrossRef]
  14. E.  Igawa, M.  Nogami, J.  Nakagawa, “Symmetric 10G-EPON ONU burst-mode transceiver employing dynamic power save control circuit,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper NTuD5.
  15. S.  Bjorn, E.  Betou, T.  Ayhan, S.  Dahlfort, “Energy-efficient next-generation optical access networks,” IEEE Commun. Mag., vol.  50, no. 1, pp. 122–127, Jan. 2012.

2013 (1)

N.  Yoshimoto, J.  Kanji, S.  Kim, N.  Iiyama, J.  Terada, “DSP-based optical access approaches for enhancing NG-PON2 systems,” IEEE Commun. Mag., vol.  51, no. 3, pp. 58–64, Mar. 2013.
[CrossRef]

2012 (2)

N.  Cvijetic, “OFDM for next-generation optical access networks,” J. Lightwave Technol., vol.  30, no. 4, pp. 384–398, Feb. 2012.
[CrossRef]

S.  Bjorn, E.  Betou, T.  Ayhan, S.  Dahlfort, “Energy-efficient next-generation optical access networks,” IEEE Commun. Mag., vol.  50, no. 1, pp. 122–127, Jan. 2012.

2009 (1)

2007 (1)

M.  Morelli, C.-C. J.  Kuo, M.-O.  Pun, “Synchronization techniques for orthogonal frequency division multiple access,” Proc. IEEE, vol.  95, no. 7, pp. 1394–1427, July 2007.
[CrossRef]

Akiyama, Y.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Ayhan, T.

S.  Bjorn, E.  Betou, T.  Ayhan, S.  Dahlfort, “Energy-efficient next-generation optical access networks,” IEEE Commun. Mag., vol.  50, no. 1, pp. 122–127, Jan. 2012.

Barros, D. J. F.

Betou, E.

S.  Bjorn, E.  Betou, T.  Ayhan, S.  Dahlfort, “Energy-efficient next-generation optical access networks,” IEEE Commun. Mag., vol.  50, no. 1, pp. 122–127, Jan. 2012.

Bjorn, S.

S.  Bjorn, E.  Betou, T.  Ayhan, S.  Dahlfort, “Energy-efficient next-generation optical access networks,” IEEE Commun. Mag., vol.  50, no. 1, pp. 122–127, Jan. 2012.

Brochier, N.

B.  Charbonnier, N.  Brochier, P.  Chanclou, “(O)FDMA PON over a legacy 30 dB ODN,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK1.

Broeck, I. D.

U.  Sorger, I. D.  Broeck, M.  Schnell, “Interleaved FDMA—a new spread-spectrum multiple-access scheme,” in IEEE Int. Conf. on Communications (ICC), Atlanta, GA, vol. 2, June 1998, pp. 1013–1017.

Chanclou, P.

B.  Charbonnier, N.  Brochier, P.  Chanclou, “(O)FDMA PON over a legacy 30 dB ODN,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK1.

Charbonnier, B.

B.  Charbonnier, N.  Brochier, P.  Chanclou, “(O)FDMA PON over a legacy 30 dB ODN,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK1.

Costa, E.

T.  Frank, A.  Klein, E.  Costa, E.  Schulz, “IFDMA—a promising multiple access scheme for future mobile radio systems,” in Proc. 16th Int. Symp. on Personal, Indoor and Mobile Radio Communications, Berlin, Germany, vol. 2, Sept. 2005, pp. 1214–1218.

Cvijetic, N.

N.  Cvijetic, “OFDM for next-generation optical access networks,” J. Lightwave Technol., vol.  30, no. 4, pp. 384–398, Feb. 2012.
[CrossRef]

N.  Cvijetic, D.  Qian, J.  Hu, T.  Wang, “44-Gb/s/λ upstream OFDMA-PON transmission with polarization-insensitive source-free ONUs,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), San Diego, CA, Mar. 2010, paper OTuO2.

N.  Cvijetic, N.  Prasad, D.  Qian, J.  Howard, T.  Wang, “Computationally-efficient DSP-based MIMO equalization for OSNR gains in 40  Gb/s OFDMA-PON,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK6.

D.  Qian, S.-H.  Fan, N.  Cvijetic, J.  Hu, T.  Wang, “64/32/16QAM-OFDM using direct-detection for 40G-OFDMA-PON downstream,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OMG4.

Dahlfort, S.

S.  Bjorn, E.  Betou, T.  Ayhan, S.  Dahlfort, “Energy-efficient next-generation optical access networks,” IEEE Commun. Mag., vol.  50, no. 1, pp. 122–127, Jan. 2012.

Djordjevic, I.

W.  Shieh, I.  Djordjevic, Orthogonal Frequency Division Multiplexing for Optical Communications, Academic, 2009.

Fan, S.-H.

D.  Qian, S.-H.  Fan, N.  Cvijetic, J.  Hu, T.  Wang, “64/32/16QAM-OFDM using direct-detection for 40G-OFDMA-PON downstream,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OMG4.

Frank, T.

T.  Frank, A.  Klein, E.  Costa, E.  Schulz, “IFDMA—a promising multiple access scheme for future mobile radio systems,” in Proc. 16th Int. Symp. on Personal, Indoor and Mobile Radio Communications, Berlin, Germany, vol. 2, Sept. 2005, pp. 1214–1218.

Howard, J.

N.  Cvijetic, N.  Prasad, D.  Qian, J.  Howard, T.  Wang, “Computationally-efficient DSP-based MIMO equalization for OSNR gains in 40  Gb/s OFDMA-PON,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK6.

Hu, J.

N.  Cvijetic, D.  Qian, J.  Hu, T.  Wang, “44-Gb/s/λ upstream OFDMA-PON transmission with polarization-insensitive source-free ONUs,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), San Diego, CA, Mar. 2010, paper OTuO2.

D.  Qian, S.-H.  Fan, N.  Cvijetic, J.  Hu, T.  Wang, “64/32/16QAM-OFDM using direct-detection for 40G-OFDMA-PON downstream,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OMG4.

Ichikawa, T.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Igawa, E.

E.  Igawa, M.  Nogami, J.  Nakagawa, “Symmetric 10G-EPON ONU burst-mode transceiver employing dynamic power save control circuit,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper NTuD5.

Iiyama, N.

N.  Yoshimoto, J.  Kanji, S.  Kim, N.  Iiyama, J.  Terada, “DSP-based optical access approaches for enhancing NG-PON2 systems,” IEEE Commun. Mag., vol.  51, no. 3, pp. 58–64, Mar. 2013.
[CrossRef]

Ishii, K.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Kahn, J. M.

Kanji, J.

N.  Yoshimoto, J.  Kanji, S.  Kim, N.  Iiyama, J.  Terada, “DSP-based optical access approaches for enhancing NG-PON2 systems,” IEEE Commun. Mag., vol.  51, no. 3, pp. 58–64, Mar. 2013.
[CrossRef]

Kim, S.

N.  Yoshimoto, J.  Kanji, S.  Kim, N.  Iiyama, J.  Terada, “DSP-based optical access approaches for enhancing NG-PON2 systems,” IEEE Commun. Mag., vol.  51, no. 3, pp. 58–64, Mar. 2013.
[CrossRef]

Kitayama, K.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Klein, A.

T.  Frank, A.  Klein, E.  Costa, E.  Schulz, “IFDMA—a promising multiple access scheme for future mobile radio systems,” in Proc. 16th Int. Symp. on Personal, Indoor and Mobile Radio Communications, Berlin, Germany, vol. 2, Sept. 2005, pp. 1214–1218.

Koguchi, K.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

Kuo, C.-C. J.

M.  Morelli, C.-C. J.  Kuo, M.-O.  Pun, “Synchronization techniques for orthogonal frequency division multiple access,” Proc. IEEE, vol.  95, no. 7, pp. 1394–1427, July 2007.
[CrossRef]

Maruta, A.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

Mizuochi, T.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Morelli, M.

M.  Morelli, C.-C. J.  Kuo, M.-O.  Pun, “Synchronization techniques for orthogonal frequency division multiple access,” Proc. IEEE, vol.  95, no. 7, pp. 1394–1427, July 2007.
[CrossRef]

Nakagawa, J.

E.  Igawa, M.  Nogami, J.  Nakagawa, “Symmetric 10G-EPON ONU burst-mode transceiver employing dynamic power save control circuit,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper NTuD5.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

Nogami, M.

E.  Igawa, M.  Nogami, J.  Nakagawa, “Symmetric 10G-EPON ONU burst-mode transceiver employing dynamic power save control circuit,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper NTuD5.

Prasad, N.

N.  Cvijetic, N.  Prasad, D.  Qian, J.  Howard, T.  Wang, “Computationally-efficient DSP-based MIMO equalization for OSNR gains in 40  Gb/s OFDMA-PON,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK6.

Pun, M.-O.

M.  Morelli, C.-C. J.  Kuo, M.-O.  Pun, “Synchronization techniques for orthogonal frequency division multiple access,” Proc. IEEE, vol.  95, no. 7, pp. 1394–1427, July 2007.
[CrossRef]

Qian, D.

N.  Cvijetic, N.  Prasad, D.  Qian, J.  Howard, T.  Wang, “Computationally-efficient DSP-based MIMO equalization for OSNR gains in 40  Gb/s OFDMA-PON,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK6.

N.  Cvijetic, D.  Qian, J.  Hu, T.  Wang, “44-Gb/s/λ upstream OFDMA-PON transmission with polarization-insensitive source-free ONUs,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), San Diego, CA, Mar. 2010, paper OTuO2.

D.  Qian, S.-H.  Fan, N.  Cvijetic, J.  Hu, T.  Wang, “64/32/16QAM-OFDM using direct-detection for 40G-OFDMA-PON downstream,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OMG4.

Schnell, M.

U.  Sorger, I. D.  Broeck, M.  Schnell, “Interleaved FDMA—a new spread-spectrum multiple-access scheme,” in IEEE Int. Conf. on Communications (ICC), Atlanta, GA, vol. 2, June 1998, pp. 1013–1017.

Schulz, E.

T.  Frank, A.  Klein, E.  Costa, E.  Schulz, “IFDMA—a promising multiple access scheme for future mobile radio systems,” in Proc. 16th Int. Symp. on Personal, Indoor and Mobile Radio Communications, Berlin, Germany, vol. 2, Sept. 2005, pp. 1214–1218.

Shieh, W.

W.  Shieh, I.  Djordjevic, Orthogonal Frequency Division Multiplexing for Optical Communications, Academic, 2009.

Sorger, U.

U.  Sorger, I. D.  Broeck, M.  Schnell, “Interleaved FDMA—a new spread-spectrum multiple-access scheme,” in IEEE Int. Conf. on Communications (ICC), Atlanta, GA, vol. 2, June 1998, pp. 1013–1017.

Suzuki, N.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

Terada, J.

N.  Yoshimoto, J.  Kanji, S.  Kim, N.  Iiyama, J.  Terada, “DSP-based optical access approaches for enhancing NG-PON2 systems,” IEEE Commun. Mag., vol.  51, no. 3, pp. 58–64, Mar. 2013.
[CrossRef]

Wang, T.

D.  Qian, S.-H.  Fan, N.  Cvijetic, J.  Hu, T.  Wang, “64/32/16QAM-OFDM using direct-detection for 40G-OFDMA-PON downstream,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OMG4.

N.  Cvijetic, D.  Qian, J.  Hu, T.  Wang, “44-Gb/s/λ upstream OFDMA-PON transmission with polarization-insensitive source-free ONUs,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), San Diego, CA, Mar. 2010, paper OTuO2.

N.  Cvijetic, N.  Prasad, D.  Qian, J.  Howard, T.  Wang, “Computationally-efficient DSP-based MIMO equalization for OSNR gains in 40  Gb/s OFDMA-PON,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2011, paper OTuK6.

Yoshida, T.

Y.  Yoshida, K.  Ishii, A.  Maruta, Y.  Akiyama, T.  Yoshida, N.  Suzuki, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, K.  Kitayama, “Experimental demonstration of 2xONU 30 Gbps digitally-supported-coherent IFDMA-PON uplink,” in Proc. Optical Fiber Communication Conf. and the Nat. Fiber Optic Engineers Conf. (OFC/NFOEC), Los Angeles, CA, Mar. 2012, paper OW3B.5.

K.  Ishii, Y.  Akiyama, T.  Yoshida, N.  Suzuki, T.  Ichikawa, K.  Koguchi, J.  Nakagawa, T.  Mizuochi, Y.  Yoshida, A.  Maruta, K.  Kitayama, “Low-power consumption DSP circuit design for IFDMA-based PON systems,” in Proc. of the 16th Opto-Electronics and Communications Conf. (OECC), Kaohsiung, Taiwan, July 2011, pp. 773–774.

Yoshida, Y.

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Figures (7)

Fig. 1.
Fig. 1.

Architecture of coherent IFDMA-PON uplink system.

Fig. 2.
Fig. 2.

Block diagrams of ONUs for IFDMA: (a) conventional IFDMA-PON and (b) multiplierless IFDMA-PON.

Fig. 3.
Fig. 3.

Overview of FPGA emulator board for evaluating the proposed IFDMA-PON uplink system.

Fig. 4.
Fig. 4.

Experimental setup for evaluating the test ONU for an IFDMA-PON uplink system.

Fig. 5.
Fig. 5.

Frame format of an FPGA prototype of an ONU for an IFDMA-PON uplink system.

Fig. 6.
Fig. 6.

Subcarrier assignments for IFDMA-PON uplink system.

Fig. 7.
Fig. 7.

Constellation map of received IFDMA symbols.

Equations (11)

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xkl{0,1,2,3}QPSK(k={1,2,,16}),
Dl=(D1lD2lD16l)|Dkl=ejπxkl/2.
R=(100100100001001001000010010000)16×68.
Q=(ej2πq·064000ej2πq·164000ej2πq·6764)68×68|q{0,1,2,3}MAP.
P=(ej2πp·064000ej2πp·164000ej2πp·6764)68×68|p{0.5<p<+0.5}CSI1.
Pl=exp(j2πp0l)P|p0l{0.5<p0l<+0.5}CSI2.
MIFDMAl=PlQRTDT=(ej2π(p0l+(p+q)m64+xkl4))T=(ej2π1024(1024p0l+16(p+q)m+256xkl))T,
TLUT=(ej2π·01024ej2π·11024ej2π·10231024)1×1024.
MPtrl=(δ(|1024p0l+16(p+q)m+256xkl|mod10230)δ(|1024p0l+16(p+q)m+256xkl|mod10231)δ(|1024p0l+16(p+q)m+256xkl|mod10231023))1024×68,
δ(x)={1(x=0)0(x0).
MlIFDMA(TLUTMPtrl)T.