X. Liu, F. Buchali, R. W. Tkach, S. Chandrasekhar, "Mitigation of fiber nonlinear impairments in
polarization division multiplexed OFDM transmission," Bell Labs Tech. J. 14, 47-59 (2010).

G. Colavolpe, T. Foggi, E. Forestieri, G. Prati, "Robust multilevel coherent optical systems with linear
processing at the receiver," J. Lightwave Tech. 27, 2357-2369 (2009).

J. Armstrong, "OFDM for optical communications," J. Lightwave Tech. 27, 189-204 (2009).

S. L. Jansen, B. Spinnler, I. Morita, S. Randel, H. Tanaka, "100 GbE: QPSK versus OFDM," Optical Fiber Technology 15, 407-413 (2009).

S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz
spectral efficiency over 1000-km of SSMF," J. Lightwave Tech. 27, 177-188 (2009).

Q. Yang, Y. Tang, W. Shieh, "Experimental demonstration and numerical simulation of
107-Gb/s high spectral efficiency coherent optical OFDM," J. Lightwave Tech. 27, 168-176 (2009).

D. J. F. Barros, J. M. Kahn, "Optical modulator optimization for orthogonal
frequency-division multiplexing," J. Lightwave Tech. 27, 2370-2378 (2009).

X. Liu, F. Buchali, R. W. Tkach, "Improving the nonlinear tolerance of
polarization-division-multiplexed CO-OFDM in long-haul fiber
transmission," J. Lightwave Tech. 27, 3632-3640 (2009).

M. Kuschnerov, F. N. Hauske, K. Piyawanno, B. Spinnler, M. S. Alfiad, A. Napoli, B. Lankl, "DSP for coherent single-carrier receivers," J. Lightwave Tech. 27, 3614-3622 (2009).

Q. Yang, W. Shieh, Y. Ma, "Bit and power loading for coherent optical OFDM," IEEE Photon. Technol. Lett. 20, 1305-1307 (2008).

Y. Tang, K.-P. Ho, W. Shieh, "Coherent optical OFDM transmitter design employing
predistortion," IEEE Photon. Technol. Lett. 20, 954-956 (2008).

W. Shieh, "Maximum-likelihood phase and channel estimation for
coherent optical {OFDM}," IEEE Photon. Technol. Lett. 20, 605-607 (2008).

X. Yi, W. Shieh, Y. Ma, "Phase noise effects on high spectral efficiency
coherent optical OFDM transmission," J. Lightwave Tech. 26, 1309-1316 (2008).

W. Shieh, Q. Yang, Y. Ma, "107 Gb/s coherent optical OFDM transmission over
1000-km SSMF fiber using orthogonal band multiplexing," Opt. Express 16, 6378-6386 (2008).

W. Shieh, X. Yi, Q. Yang, "Coherent optical OFDM: Has its time come?," J. Opt. Networking 7, 234-255 (2008).

S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over
4160-km SSMF," J. Lightwave Tech. 26, 6-15 (2008).

B. J. C. Schmidt, A. J. Lowery, J. Armstrong, "Experimental demonstrations of electronic dispersion
compensation for long-haul transmission using direct-detection
optical OFDM," J. Lightwave Tech. 26, 196-203 (2008).

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

E. Ip, J. M. Kahn, "Compensation of dispersion and nonlinear impairments
using digital backpropagation," J. Lightwave Tech. 26, 3416-3425 (2008).

E. Ip, J. M. Kahn, "Feedforward carrier recovery for coherent optical
communications," J. Lightwave Tech. 25, 2675-2692 (2007).

X. Yi, W. Shieh, Y. Tang, "Phase estimation for coherent optical OFDM," IEEE Photon. Technol. Lett. 19, 919-921 (2007).

W. Shieh, X. Yi, Y. Ma, Y. Tang, "Theoretical and experimental study on PMD-supported
transmission using polarization diversity in coherent optical OFDM
systems," Opt. Express 15, 9936-9947 (2007).

A. J. Lowery, "Fiber nonlinearity pre- and post-compensation for
long-haul optical links using OFDM," Opt. Express 15, 12965-12970 (2007).

S. H. Han, J. H. Lee, "An overview of peak-to-average power ratio reduction
techniques for multicarrier transmission," IEEE Wireless Commun. 12, 56-65 (2005).

K. Nikitopoulos, A. Polydoros, "Phase-impairment effects and compensation algorithms
for OFDM systems," IEEE Trans. Commun. 53, 698-707 (2005).

P. Schniter, "Low-complexity equalization of OFDM in doubly
selective channels," IEEE Trans. Signal Processing 52, 1002-1011 (2004).

K.-P. Ho, J. M. Kahn, "Electronic compensation technique to mitigate
nonlinear phase noise," J. Lightwave Tech. 22, 779-783 (2004).

J. Jang, K. B. Lee, "Transmit power adaptation for multiuser OFDM systems," IEEE J. Select. Areas Commun. 21, 171-178 (2003).

T. Strohmer, S. Beaver, "Optimal OFDM design for time-frequency dispersive
channels," IEEE Trans. Commun. 51, 1111-1122 (2003).

X. Cai, G. B. Giannakis, "Bounding performance and suppressing intercarrier
interference in wireless mobile OFDM," IEEE Trans. Commun. 51, 2047-2056 (2003).

A. Tkacenko, P. P. Vaidyanathan, "A low-complexity eigenfilter design method for channel
shortening equalizers for DMT systems," IEEE Trans. Commun. 51, 1069-1072 (2003).

H. Chen, A. M. Haimovich, "Iterative estimation and cancellation of clipping
noise for OFDM signals," IEEE Commun. Letters 7, 305-307 (2003).

A. Stamoulis, S. N. Diggavi, N. Al-Dhahir, "Intercarrier interference in MIMO OFDM," IEEE Trans. Signal Processing 50, 2451-2464 (2002).

Y. Li, J. L. J. Cimini, "Bounds on the interchannel interference of OFDM in
time-varying impairments," IEEE Trans. Commun. 49, 401-404 (2001).

Y. Choi, P. J. Voltz, F. A. Cassara, "On channel estimation and detection for multicarrier
signals in fast and selective Rayleigh fading channels," IEEE Trans. Commun. 49, 1375-1387 (2001).

E. Forestieri, L. Vincetti, "Exact evaluation of the Jones matrix of a fiber in the
presence of polarization mode dispersion of any order," J. Lightwave Technol. 17, 1898-1909 (2001).

Z. Wang, G. B. Giannakis, "Wireless multicarrier communications," IEEE Signal Processing Mag. 17, 29-48 (2000).

C. Y. Wong, R. S. Cheng, K. B. Letaief, R. D. Murch, "Multiuser OFDM with adaptive subcarrier, bit, and
power allocation," IEEE J. Select. Areas Commun. 17, 1747-1758 (1999).

G. Colavolpe, R. Raheli, "Noncoherent sequence detection," IEEE Trans. Commun. 47, 1376-1385 (1999).

W. J. Jeon, K. H. Chang, Y. S. Cho, "An equalization technique for orthogonal
frequency-division multiplexing systems in time-variant multipath
channels," IEEE Trans. Commun. 47, 27-32 (1999).

L. Tomba, "On the effect of Wiener phase noise in OFDM systems," IEEE Trans. Commun. 46, 580-583 (1998).

W. Kozek, A. F. Molisch, "Nonorthogonal pulseshapes for multicarrier
communications in doubly dispersive channels," IEEE J. Select. Areas Commun. 16, 1579-1589 (1998).

C. Lorattanasane, K. Kikuchi, "Design theory of long-distance optical transmission
systems using midway optical phase conjugation," J. Lightwave Tech. 15, 948-955 (1997).

S. Watanabe, M. Shirasaki, "Exact compensation for both chromatic dispersion and
kerr effect in a transmission fiber using optical phase conjugation," J. Lightwave Tech. 14, 243-248 (1996).

P. J. W. Melsa, R. C. Younce, C. E. Rohrs, "Impulse response shortening for discrete multitone
transceivers," IEEE Trans. Commun. 44, 1662-1672 (1996).

T. Pollet, M. V. Bladel, M. Moeneclaey, "BER sensitivity of OFDM systems to carrier frequency
offset and Wiener phase noise," IEEE Trans. Commun. 43, 191-193 (1995).

B. L. Floch, M. Alard, C. Berrou, "Coded orthogonal frequency division multiplex," Proc. IEEE 83, 982-996 (1995).

J. A. C. Bingham, "Multicarrier modulation for data transmission: An idea
whose time has come," IEEE Commun. Mag. 5-14 (1990).

S. B. Weinstein, P. M. Ebert, "Data transmission by frequency-division multiplexing
using the discrete Fourier transform," IEEE Trans. Commun. com-19, 628-634 (1971).

X. Liu, F. Buchali, R. W. Tkach, S. Chandrasekhar, "Mitigation of fiber nonlinear impairments in
polarization division multiplexed OFDM transmission," Bell Labs Tech. J. 14, 47-59 (2010).

H. Chen, A. M. Haimovich, "Iterative estimation and cancellation of clipping
noise for OFDM signals," IEEE Commun. Letters 7, 305-307 (2003).

J. A. C. Bingham, "Multicarrier modulation for data transmission: An idea
whose time has come," IEEE Commun. Mag. 5-14 (1990).

C. Y. Wong, R. S. Cheng, K. B. Letaief, R. D. Murch, "Multiuser OFDM with adaptive subcarrier, bit, and
power allocation," IEEE J. Select. Areas Commun. 17, 1747-1758 (1999).

J. Jang, K. B. Lee, "Transmit power adaptation for multiuser OFDM systems," IEEE J. Select. Areas Commun. 21, 171-178 (2003).

W. Kozek, A. F. Molisch, "Nonorthogonal pulseshapes for multicarrier
communications in doubly dispersive channels," IEEE J. Select. Areas Commun. 16, 1579-1589 (1998).

X. Yi, W. Shieh, Y. Tang, "Phase estimation for coherent optical OFDM," IEEE Photon. Technol. Lett. 19, 919-921 (2007).

W. Shieh, "Maximum-likelihood phase and channel estimation for
coherent optical {OFDM}," IEEE Photon. Technol. Lett. 20, 605-607 (2008).

Y. Tang, K.-P. Ho, W. Shieh, "Coherent optical OFDM transmitter design employing
predistortion," IEEE Photon. Technol. Lett. 20, 954-956 (2008).

Q. Yang, W. Shieh, Y. Ma, "Bit and power loading for coherent optical OFDM," IEEE Photon. Technol. Lett. 20, 1305-1307 (2008).

Z. Wang, G. B. Giannakis, "Wireless multicarrier communications," IEEE Signal Processing Mag. 17, 29-48 (2000).

L. Tomba, "On the effect of Wiener phase noise in OFDM systems," IEEE Trans. Commun. 46, 580-583 (1998).

T. Strohmer, S. Beaver, "Optimal OFDM design for time-frequency dispersive
channels," IEEE Trans. Commun. 51, 1111-1122 (2003).

G. Colavolpe, R. Raheli, "Noncoherent sequence detection," IEEE Trans. Commun. 47, 1376-1385 (1999).

S. B. Weinstein, P. M. Ebert, "Data transmission by frequency-division multiplexing
using the discrete Fourier transform," IEEE Trans. Commun. com-19, 628-634 (1971).

W. J. Jeon, K. H. Chang, Y. S. Cho, "An equalization technique for orthogonal
frequency-division multiplexing systems in time-variant multipath
channels," IEEE Trans. Commun. 47, 27-32 (1999).

Y. Choi, P. J. Voltz, F. A. Cassara, "On channel estimation and detection for multicarrier
signals in fast and selective Rayleigh fading channels," IEEE Trans. Commun. 49, 1375-1387 (2001).

X. Cai, G. B. Giannakis, "Bounding performance and suppressing intercarrier
interference in wireless mobile OFDM," IEEE Trans. Commun. 51, 2047-2056 (2003).

P. J. W. Melsa, R. C. Younce, C. E. Rohrs, "Impulse response shortening for discrete multitone
transceivers," IEEE Trans. Commun. 44, 1662-1672 (1996).

A. Tkacenko, P. P. Vaidyanathan, "A low-complexity eigenfilter design method for channel
shortening equalizers for DMT systems," IEEE Trans. Commun. 51, 1069-1072 (2003).

Y. Li, J. L. J. Cimini, "Bounds on the interchannel interference of OFDM in
time-varying impairments," IEEE Trans. Commun. 49, 401-404 (2001).

T. Pollet, M. V. Bladel, M. Moeneclaey, "BER sensitivity of OFDM systems to carrier frequency
offset and Wiener phase noise," IEEE Trans. Commun. 43, 191-193 (1995).

K. Nikitopoulos, A. Polydoros, "Phase-impairment effects and compensation algorithms
for OFDM systems," IEEE Trans. Commun. 53, 698-707 (2005).

A. Stamoulis, S. N. Diggavi, N. Al-Dhahir, "Intercarrier interference in MIMO OFDM," IEEE Trans. Signal Processing 50, 2451-2464 (2002).

P. Schniter, "Low-complexity equalization of OFDM in doubly
selective channels," IEEE Trans. Signal Processing 52, 1002-1011 (2004).

S. H. Han, J. H. Lee, "An overview of peak-to-average power ratio reduction
techniques for multicarrier transmission," IEEE Wireless Commun. 12, 56-65 (2005).

G. Colavolpe, T. Foggi, E. Forestieri, G. Prati, "Robust multilevel coherent optical systems with linear
processing at the receiver," J. Lightwave Tech. 27, 2357-2369 (2009).

S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, H. Tanaka, "Coherent optical 25.8-Gb/s OFDM transmission over
4160-km SSMF," J. Lightwave Tech. 26, 6-15 (2008).

B. J. C. Schmidt, A. J. Lowery, J. Armstrong, "Experimental demonstrations of electronic dispersion
compensation for long-haul transmission using direct-detection
optical OFDM," J. Lightwave Tech. 26, 196-203 (2008).

S. L. Jansen, I. Morita, T. C. W. Schenk, H. Tanaka, "121.9-Gb/s PDM-OFDM transmission with 2-b/s/Hz
spectral efficiency over 1000-km of SSMF," J. Lightwave Tech. 27, 177-188 (2009).

J. Armstrong, "OFDM for optical communications," J. Lightwave Tech. 27, 189-204 (2009).

Q. Yang, Y. Tang, W. Shieh, "Experimental demonstration and numerical simulation of
107-Gb/s high spectral efficiency coherent optical OFDM," J. Lightwave Tech. 27, 168-176 (2009).

X. Yi, W. Shieh, Y. Ma, "Phase noise effects on high spectral efficiency
coherent optical OFDM transmission," J. Lightwave Tech. 26, 1309-1316 (2008).

X. Liu, F. Buchali, R. W. Tkach, "Improving the nonlinear tolerance of
polarization-division-multiplexed CO-OFDM in long-haul fiber
transmission," J. Lightwave Tech. 27, 3632-3640 (2009).

K.-P. Ho, J. M. Kahn, "Electronic compensation technique to mitigate
nonlinear phase noise," J. Lightwave Tech. 22, 779-783 (2004).

D. J. F. Barros, J. M. Kahn, "Optical modulator optimization for orthogonal
frequency-division multiplexing," J. Lightwave Tech. 27, 2370-2378 (2009).

E. Ip, J. M. Kahn, "Feedforward carrier recovery for coherent optical
communications," J. Lightwave Tech. 25, 2675-2692 (2007).

M. Kuschnerov, F. N. Hauske, K. Piyawanno, B. Spinnler, M. S. Alfiad, A. Napoli, B. Lankl, "DSP for coherent single-carrier receivers," J. Lightwave Tech. 27, 3614-3622 (2009).

S. Watanabe, M. Shirasaki, "Exact compensation for both chromatic dispersion and
kerr effect in a transmission fiber using optical phase conjugation," J. Lightwave Tech. 14, 243-248 (1996).

C. Lorattanasane, K. Kikuchi, "Design theory of long-distance optical transmission
systems using midway optical phase conjugation," J. Lightwave Tech. 15, 948-955 (1997).

E. Ip, J. M. Kahn, "Compensation of dispersion and nonlinear impairments
using digital backpropagation," J. Lightwave Tech. 26, 3416-3425 (2008).

E. Forestieri, L. Vincetti, "Exact evaluation of the Jones matrix of a fiber in the
presence of polarization mode dispersion of any order," J. Lightwave Technol. 17, 1898-1909 (2001).

W. Shieh, X. Yi, Q. Yang, "Coherent optical OFDM: Has its time come?," J. Opt. Networking 7, 234-255 (2008).

A. J. Lowery, "Fiber nonlinearity pre- and post-compensation for
long-haul optical links using OFDM," Opt. Express 15, 12965-12970 (2007).

W. Shieh, Q. Yang, Y. Ma, "107 Gb/s coherent optical OFDM transmission over
1000-km SSMF fiber using orthogonal band multiplexing," Opt. Express 16, 6378-6386 (2008).

A. J. Lowery, J. Armstrong, "Orthogonal-frequency-division-multiplexing for
dispersion compensation of long-haul optical systems," Opt. Express 14, 2079-2084 (2006).

W. Shieh, X. Yi, Y. Ma, Y. Tang, "Theoretical and experimental study on PMD-supported
transmission using polarization diversity in coherent optical OFDM
systems," Opt. Express 15, 9936-9947 (2007).

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

S. L. Jansen, B. Spinnler, I. Morita, S. Randel, H. Tanaka, "100 GbE: QPSK versus OFDM," Optical Fiber Technology 15, 407-413 (2009).

B. L. Floch, M. Alard, C. Berrou, "Coded orthogonal frequency division multiplex," Proc. IEEE 83, 982-996 (1995).

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X. Liu, F. Buchali, "A novel channel estimation method for PDM-OFDM
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Y. Tang, Y. Ma, W. Shieh, "107 Gb/s CO-OFDM transmission with inline chromatic
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