C.-J. Ahn, S. Takahashi, H. Fujisaka, T. Kamio, and K. Haeiwa, “Power consumption for coherent optical orthogonal frequency division multiplexing with punctured LDPC codes and variable amplitude block codes,” J. Lightwave Technol., vol. 26, no. 14, pp. 2227–2234, July2008.

[CrossRef]

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

G. Caire, G. Taricco, and E. Biglieri, “Bit interleaved coded modulation,” IEEE Trans. Inform. Theory, vol. 44, pp. 927–946, May1998.

[CrossRef]

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

S. Bigo, “Coherent detection: A key enabler for next-generation optical transmission systems,” in 9th Int. Conf. on Proc. 2007 Transparent Optical Networks, ICTON ’07, July 2007, pp. 332–335.

E. Vergnol, J. Cadiou, A. Carenco, and C. Kazmierski, “New modulation scheme for integrated single side band lightwave source allowing fiber transport up to 256 QAM over 38 GHz carrier,” in Proc. OFC, 2000, pp. 134–136.

G. Caire, G. Taricco, and E. Biglieri, “Bit interleaved coded modulation,” IEEE Trans. Inform. Theory, vol. 44, pp. 927–946, May1998.

[CrossRef]

E. Vergnol, J. Cadiou, A. Carenco, and C. Kazmierski, “New modulation scheme for integrated single side band lightwave source allowing fiber transport up to 256 QAM over 38 GHz carrier,” in Proc. OFC, 2000, pp. 134–136.

L. Ping, S. Chan, and K. Yeung, “Iterative decoding of multi-dimensional concatenated single parity check codes,” in Proc. IEEE ICC-98, June1998, pp. 131–135.

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

Z. Li, L. Chen, L. Zeng, S. Lin, and W. H. Fong, “Efficient encoding of quasi-cyclic low-density parity-check codes,” IEEE Trans. Commun., vol. 54, no. 1, pp. 71–81, Jan.2006.

[CrossRef]

E. Funk, V. Urick, S. Strutz, J. Dexter, and K. Williams, “110 km 256-QAM digital microwave over fiber link,” in Proc. MTT-S, 2008, vol. 1, pp. 269–272.

I. Djordjevic and B. Vasic, “Multilevel coding in M-ary DPSK/differential QAM high-speed optical transmission with direct detection,” J. Lightwave Technol., vol. 24, no. 1, pp. 420–428, Jan.2006.

[CrossRef]

B. Vasic, I. Djordjevic, and R. Kostuk, “Low-density parity check codes and iterative decoding for long-haul optical communication systems,” J. Lightwave Technol., vol. 21, no. 2, pp. 438–446, Feb.2003.

[CrossRef]

I. B. Djordjevic, M. Arabaci, and L. L. Minkov, “Next generation FEC for high-capacity communication in optical transport networks,” J. Lightwave Technol., vol. 27, no. 16, pp. 3518–3530, Aug.2009.

[CrossRef]

I. B. Djordjevic and B. Vasic, “Multilevel coding in M-ary DPSK/differential QAM high-speed optical transmission with direct detection,” J. Lightwave Technol., vol. 24, no. 1, pp. 420–428, Jan.2006.

[CrossRef]

Z. Li, L. Chen, L. Zeng, S. Lin, and W. H. Fong, “Efficient encoding of quasi-cyclic low-density parity-check codes,” IEEE Trans. Commun., vol. 54, no. 1, pp. 71–81, Jan.2006.

[CrossRef]

M. P. C. Fossorier, “Quasi-cyclic low-density parity-check codes from circulant permutation matrices,” IEEE Trans. Inf. Theory, vol. 50, no. 8, pp. 1788–1793, Aug.2004.

[CrossRef]

R. H. Morelos-Zaragoza, M. P. C. Fossorier, S. Lin, and H. Imai, “Multilevel coded modulation for unequal error protection and multistage decoding—part I: Symmetric constellations,” IEEE Trans. Commun., vol. 48, no. 2, pp. 204–213, Feb.2000.

[CrossRef]

C.-J. Ahn, S. Takahashi, H. Fujisaka, T. Kamio, and K. Haeiwa, “Power consumption for coherent optical orthogonal frequency division multiplexing with punctured LDPC codes and variable amplitude block codes,” J. Lightwave Technol., vol. 26, no. 14, pp. 2227–2234, July2008.

[CrossRef]

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

E. Funk, V. Urick, S. Strutz, J. Dexter, and K. Williams, “110 km 256-QAM digital microwave over fiber link,” in Proc. MTT-S, 2008, vol. 1, pp. 269–272.

C. Gong and X. Wang, “Multilevel LDPC-coded high-speed optical systems: Efficient hard decoding and code optimization,” IEEE J. Sel. Top. Quantum Electron., vol. 16, no. 5, pp. 1268–1279, Sept./Oct.2010.

[CrossRef]

M. Yoshida, H. Goto, T. Omiya, K. Kasai, and M. Nakazawa, “Frequency division multiplexed 1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8.6 bit/s/Hz,” in Proc. ECOC, 2008, pp. 1–4.

C.-J. Ahn, S. Takahashi, H. Fujisaka, T. Kamio, and K. Haeiwa, “Power consumption for coherent optical orthogonal frequency division multiplexing with punctured LDPC codes and variable amplitude block codes,” J. Lightwave Technol., vol. 26, no. 14, pp. 2227–2234, July2008.

[CrossRef]

L. Ping, X. L. Huang, and N. Phamdo, “Zigzag codes and concatenated zigzag codes,” IEEE Trans. Inf. Theory, vol. 47, no. 2, pp. 800–807, Feb.2001.

[CrossRef]

C. Zhang, Y. Mori, K. Igarashi, K. Katoh, and K. Kikuchi, “Ultrafast operation of digital coherent receivers using their time-division demultiplexing function,” J. Lightwave Technol., vol. 27, no. 3, pp. 224–232, Feb.2009.

[CrossRef]

R. H. Morelos-Zaragoza, M. P. C. Fossorier, S. Lin, and H. Imai, “Multilevel coded modulation for unequal error protection and multistage decoding—part I: Symmetric constellations,” IEEE Trans. Commun., vol. 48, no. 2, pp. 204–213, Feb.2000.

[CrossRef]

H. Jumpei, K. Kasai, M. Yoshida, and M. Nakazawa, “1 Gsymbol/s, 64 QAM coherent optical transmission over 150 km with a spectral efficiency of 3 bit/s/Hz,” in Proc. OFC/NFOEC, 2007, pp. 1–3.

C.-J. Ahn, S. Takahashi, H. Fujisaka, T. Kamio, and K. Haeiwa, “Power consumption for coherent optical orthogonal frequency division multiplexing with punctured LDPC codes and variable amplitude block codes,” J. Lightwave Technol., vol. 26, no. 14, pp. 2227–2234, July2008.

[CrossRef]

H. Jumpei, K. Kasai, M. Yoshida, and M. Nakazawa, “1 Gsymbol/s, 64 QAM coherent optical transmission over 150 km with a spectral efficiency of 3 bit/s/Hz,” in Proc. OFC/NFOEC, 2007, pp. 1–3.

M. Yoshida, H. Goto, T. Omiya, K. Kasai, and M. Nakazawa, “Frequency division multiplexed 1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8.6 bit/s/Hz,” in Proc. ECOC, 2008, pp. 1–4.

C. Zhang, Y. Mori, K. Igarashi, K. Katoh, and K. Kikuchi, “Ultrafast operation of digital coherent receivers using their time-division demultiplexing function,” J. Lightwave Technol., vol. 27, no. 3, pp. 224–232, Feb.2009.

[CrossRef]

E. Vergnol, J. Cadiou, A. Carenco, and C. Kazmierski, “New modulation scheme for integrated single side band lightwave source allowing fiber transport up to 256 QAM over 38 GHz carrier,” in Proc. OFC, 2000, pp. 134–136.

C. Zhang, Y. Mori, K. Igarashi, K. Katoh, and K. Kikuchi, “Ultrafast operation of digital coherent receivers using their time-division demultiplexing function,” J. Lightwave Technol., vol. 27, no. 3, pp. 224–232, Feb.2009.

[CrossRef]

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

O. A. Sab and V. Lemaire, “Block turbo code performance for long-haul DWDM optical transmission systems,” in Proc. 2000 Optical Fiber Communication Conf., Mar. 2000.

Z. Li, L. Chen, L. Zeng, S. Lin, and W. H. Fong, “Efficient encoding of quasi-cyclic low-density parity-check codes,” IEEE Trans. Commun., vol. 54, no. 1, pp. 71–81, Jan.2006.

[CrossRef]

Z. Li, L. Chen, L. Zeng, S. Lin, and W. H. Fong, “Efficient encoding of quasi-cyclic low-density parity-check codes,” IEEE Trans. Commun., vol. 54, no. 1, pp. 71–81, Jan.2006.

[CrossRef]

R. H. Morelos-Zaragoza, M. P. C. Fossorier, S. Lin, and H. Imai, “Multilevel coded modulation for unequal error protection and multistage decoding—part I: Symmetric constellations,” IEEE Trans. Commun., vol. 48, no. 2, pp. 204–213, Feb.2000.

[CrossRef]

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

R. H. Morelos-Zaragoza, M. P. C. Fossorier, S. Lin, and H. Imai, “Multilevel coded modulation for unequal error protection and multistage decoding—part I: Symmetric constellations,” IEEE Trans. Commun., vol. 48, no. 2, pp. 204–213, Feb.2000.

[CrossRef]

C. Zhang, Y. Mori, K. Igarashi, K. Katoh, and K. Kikuchi, “Ultrafast operation of digital coherent receivers using their time-division demultiplexing function,” J. Lightwave Technol., vol. 27, no. 3, pp. 224–232, Feb.2009.

[CrossRef]

H. Jumpei, K. Kasai, M. Yoshida, and M. Nakazawa, “1 Gsymbol/s, 64 QAM coherent optical transmission over 150 km with a spectral efficiency of 3 bit/s/Hz,” in Proc. OFC/NFOEC, 2007, pp. 1–3.

M. Yoshida, H. Goto, T. Omiya, K. Kasai, and M. Nakazawa, “Frequency division multiplexed 1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8.6 bit/s/Hz,” in Proc. ECOC, 2008, pp. 1–4.

M. Yoshida, H. Goto, T. Omiya, K. Kasai, and M. Nakazawa, “Frequency division multiplexed 1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8.6 bit/s/Hz,” in Proc. ECOC, 2008, pp. 1–4.

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

L. Ping, X. L. Huang, and N. Phamdo, “Zigzag codes and concatenated zigzag codes,” IEEE Trans. Inf. Theory, vol. 47, no. 2, pp. 800–807, Feb.2001.

[CrossRef]

L. Ping and K. Y. Wu, “Concatenated tree codes: A low-complexity, high-performance approach,” IEEE Trans. Inf. Theory, vol. 47, no. 2, pp. 791–799, Feb.2001.

[CrossRef]

L. Ping, X. L. Huang, and N. Phamdo, “Zigzag codes and concatenated zigzag codes,” IEEE Trans. Inf. Theory, vol. 47, no. 2, pp. 800–807, Feb.2001.

[CrossRef]

L. Ping, S. Chan, and K. Yeung, “Iterative decoding of multi-dimensional concatenated single parity check codes,” in Proc. IEEE ICC-98, June1998, pp. 131–135.

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

O. A. Sab and V. Lemaire, “Block turbo code performance for long-haul DWDM optical transmission systems,” in Proc. 2000 Optical Fiber Communication Conf., Mar. 2000.

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

E. Funk, V. Urick, S. Strutz, J. Dexter, and K. Williams, “110 km 256-QAM digital microwave over fiber link,” in Proc. MTT-S, 2008, vol. 1, pp. 269–272.

C.-J. Ahn, S. Takahashi, H. Fujisaka, T. Kamio, and K. Haeiwa, “Power consumption for coherent optical orthogonal frequency division multiplexing with punctured LDPC codes and variable amplitude block codes,” J. Lightwave Technol., vol. 26, no. 14, pp. 2227–2234, July2008.

[CrossRef]

G. Caire, G. Taricco, and E. Biglieri, “Bit interleaved coded modulation,” IEEE Trans. Inform. Theory, vol. 44, pp. 927–946, May1998.

[CrossRef]

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

E. Funk, V. Urick, S. Strutz, J. Dexter, and K. Williams, “110 km 256-QAM digital microwave over fiber link,” in Proc. MTT-S, 2008, vol. 1, pp. 269–272.

I. B. Djordjevic and B. Vasic, “Multilevel coding in M-ary DPSK/differential QAM high-speed optical transmission with direct detection,” J. Lightwave Technol., vol. 24, no. 1, pp. 420–428, Jan.2006.

[CrossRef]

I. Djordjevic and B. Vasic, “Multilevel coding in M-ary DPSK/differential QAM high-speed optical transmission with direct detection,” J. Lightwave Technol., vol. 24, no. 1, pp. 420–428, Jan.2006.

[CrossRef]

B. Vasic, I. Djordjevic, and R. Kostuk, “Low-density parity check codes and iterative decoding for long-haul optical communication systems,” J. Lightwave Technol., vol. 21, no. 2, pp. 438–446, Feb.2003.

[CrossRef]

E. Vergnol, J. Cadiou, A. Carenco, and C. Kazmierski, “New modulation scheme for integrated single side band lightwave source allowing fiber transport up to 256 QAM over 38 GHz carrier,” in Proc. OFC, 2000, pp. 134–136.

C. Gong and X. Wang, “Multilevel LDPC-coded high-speed optical systems: Efficient hard decoding and code optimization,” IEEE J. Sel. Top. Quantum Electron., vol. 16, no. 5, pp. 1268–1279, Sept./Oct.2010.

[CrossRef]

E. Funk, V. Urick, S. Strutz, J. Dexter, and K. Williams, “110 km 256-QAM digital microwave over fiber link,” in Proc. MTT-S, 2008, vol. 1, pp. 269–272.

L. Ping and K. Y. Wu, “Concatenated tree codes: A low-complexity, high-performance approach,” IEEE Trans. Inf. Theory, vol. 47, no. 2, pp. 791–799, Feb.2001.

[CrossRef]

L. Ping, S. Chan, and K. Yeung, “Iterative decoding of multi-dimensional concatenated single parity check codes,” in Proc. IEEE ICC-98, June1998, pp. 131–135.

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

M. Yoshida, H. Goto, T. Omiya, K. Kasai, and M. Nakazawa, “Frequency division multiplexed 1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8.6 bit/s/Hz,” in Proc. ECOC, 2008, pp. 1–4.

H. Jumpei, K. Kasai, M. Yoshida, and M. Nakazawa, “1 Gsymbol/s, 64 QAM coherent optical transmission over 150 km with a spectral efficiency of 3 bit/s/Hz,” in Proc. OFC/NFOEC, 2007, pp. 1–3.

Z. Li, L. Chen, L. Zeng, S. Lin, and W. H. Fong, “Efficient encoding of quasi-cyclic low-density parity-check codes,” IEEE Trans. Commun., vol. 54, no. 1, pp. 71–81, Jan.2006.

[CrossRef]

C. Zhang, Y. Mori, K. Igarashi, K. Katoh, and K. Kikuchi, “Ultrafast operation of digital coherent receivers using their time-division demultiplexing function,” J. Lightwave Technol., vol. 27, no. 3, pp. 224–232, Feb.2009.

[CrossRef]

C. Gong and X. Wang, “Multilevel LDPC-coded high-speed optical systems: Efficient hard decoding and code optimization,” IEEE J. Sel. Top. Quantum Electron., vol. 16, no. 5, pp. 1268–1279, Sept./Oct.2010.

[CrossRef]

R. H. Morelos-Zaragoza, M. P. C. Fossorier, S. Lin, and H. Imai, “Multilevel coded modulation for unequal error protection and multistage decoding—part I: Symmetric constellations,” IEEE Trans. Commun., vol. 48, no. 2, pp. 204–213, Feb.2000.

[CrossRef]

Z. Li, L. Chen, L. Zeng, S. Lin, and W. H. Fong, “Efficient encoding of quasi-cyclic low-density parity-check codes,” IEEE Trans. Commun., vol. 54, no. 1, pp. 71–81, Jan.2006.

[CrossRef]

L. Ping and K. Y. Wu, “Concatenated tree codes: A low-complexity, high-performance approach,” IEEE Trans. Inf. Theory, vol. 47, no. 2, pp. 791–799, Feb.2001.

[CrossRef]

L. Ping, X. L. Huang, and N. Phamdo, “Zigzag codes and concatenated zigzag codes,” IEEE Trans. Inf. Theory, vol. 47, no. 2, pp. 800–807, Feb.2001.

[CrossRef]

M. P. C. Fossorier, “Quasi-cyclic low-density parity-check codes from circulant permutation matrices,” IEEE Trans. Inf. Theory, vol. 50, no. 8, pp. 1788–1793, Aug.2004.

[CrossRef]

G. Caire, G. Taricco, and E. Biglieri, “Bit interleaved coded modulation,” IEEE Trans. Inform. Theory, vol. 44, pp. 927–946, May1998.

[CrossRef]

I. B. Djordjevic and B. Vasic, “Multilevel coding in M-ary DPSK/differential QAM high-speed optical transmission with direct detection,” J. Lightwave Technol., vol. 24, no. 1, pp. 420–428, Jan.2006.

[CrossRef]

C.-J. Ahn, S. Takahashi, H. Fujisaka, T. Kamio, and K. Haeiwa, “Power consumption for coherent optical orthogonal frequency division multiplexing with punctured LDPC codes and variable amplitude block codes,” J. Lightwave Technol., vol. 26, no. 14, pp. 2227–2234, July2008.

[CrossRef]

I. Djordjevic and B. Vasic, “Multilevel coding in M-ary DPSK/differential QAM high-speed optical transmission with direct detection,” J. Lightwave Technol., vol. 24, no. 1, pp. 420–428, Jan.2006.

[CrossRef]

B. Vasic, I. Djordjevic, and R. Kostuk, “Low-density parity check codes and iterative decoding for long-haul optical communication systems,” J. Lightwave Technol., vol. 21, no. 2, pp. 438–446, Feb.2003.

[CrossRef]

I. B. Djordjevic, M. Arabaci, and L. L. Minkov, “Next generation FEC for high-capacity communication in optical transport networks,” J. Lightwave Technol., vol. 27, no. 16, pp. 3518–3530, Aug.2009.

[CrossRef]

J. Renaudier, G. Charlet, M. Salsi, O. Pardo, H. Mardoyan, P. Tran, and S. Bigo, “Linear fiber impairments mitigation of 40-Gbit/s polarization-multiplexed QPSK by digital processing in a coherent receiver,” J. Lightwave Technol., vol. 26, no. 1, pp. 36–42, Jan.2008.

[CrossRef]

C. Zhang, Y. Mori, K. Igarashi, K. Katoh, and K. Kikuchi, “Ultrafast operation of digital coherent receivers using their time-division demultiplexing function,” J. Lightwave Technol., vol. 27, no. 3, pp. 224–232, Feb.2009.

[CrossRef]

O. A. Sab and V. Lemaire, “Block turbo code performance for long-haul DWDM optical transmission systems,” in Proc. 2000 Optical Fiber Communication Conf., Mar. 2000.

M. Akita, H. Fujita, T. Mizuochi, K. Kubo, H. Yoshida, K. Kuno, and S. Kurahashi, “Third generation FEC employing turbo product code for long-haul DWDM transmission systems,” in Proc. 2002 Optical Fiber Communication Conf., Mar. 2002.

E. Vergnol, J. Cadiou, A. Carenco, and C. Kazmierski, “New modulation scheme for integrated single side band lightwave source allowing fiber transport up to 256 QAM over 38 GHz carrier,” in Proc. OFC, 2000, pp. 134–136.

E. Funk, V. Urick, S. Strutz, J. Dexter, and K. Williams, “110 km 256-QAM digital microwave over fiber link,” in Proc. MTT-S, 2008, vol. 1, pp. 269–272.

M. Yoshida, H. Goto, T. Omiya, K. Kasai, and M. Nakazawa, “Frequency division multiplexed 1 Gsymbol/s, 64 QAM coherent optical transmission with a spectral efficiency of 8.6 bit/s/Hz,” in Proc. ECOC, 2008, pp. 1–4.

H. Jumpei, K. Kasai, M. Yoshida, and M. Nakazawa, “1 Gsymbol/s, 64 QAM coherent optical transmission over 150 km with a spectral efficiency of 3 bit/s/Hz,” in Proc. OFC/NFOEC, 2007, pp. 1–3.

S. Bigo, “Coherent detection: A key enabler for next-generation optical transmission systems,” in 9th Int. Conf. on Proc. 2007 Transparent Optical Networks, ICTON ’07, July 2007, pp. 332–335.

L. Ping, S. Chan, and K. Yeung, “Iterative decoding of multi-dimensional concatenated single parity check codes,” in Proc. IEEE ICC-98, June1998, pp. 131–135.