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. Lightw. Technol. 196-203 (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. Lightw.
Technol. 26, 6-15 (2008).

J. Armstrong, B. J. C. Schmidt, "Comparison of asymmetrically
clipped optical OFDM and DC-biased optical OFDM in AWGN," IEEE Commun. Lett. 12, 343-345 (2008).

N. Letzepis, I. Holland, W. Cowley, "The Gaussian free space optical
MIMO channel with Q-ary pulse position modulation," IEEE
Trans. Wireless Commun. 7, 1744-1753 (2008).

N. Cvijetic, S. G. Wilson, M. Brandt-Pearce, "Performance bounds for free-space
optical MIMO systems with APD receivers in atmospheric turbulence," IEEE J. Sel. Areas Commun. 26, 3-12 (2008).

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

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

W. Shieh, Y. Xingwen, M. Yiran, Y. Qi, "Coherent optical OFDM: Has its time come? [Invited]," J. Opt. Netw. 7, 234-255 (2008).

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M. Greenberg, M. Nazarathy, M. Orenstein, "Data parallelization by optical
MIMO transmission over multimode fiber with intermodal coupling," J. Lightw. Technol. 25, 1503-1514 (2007).

A. Tarighat, R. C. J. Hsu, A. Shah, A. H. Sayed, B. Jalali, "Fundamentals and challenges of optical multiple-input
multiple-output multimode fiber links," IEEE
Commun. Mag. 45, 57-63 (2007).

A. P. T. Lau, X. Lei, W. Ting, "Performance of receivers and detection algorithms for modal
multiplexing in multimode fiber systems," IEEE
Photon. Technol. Lett. 19, 1087-1089 (2007).

W. Shieh, "PMD-supported coherent optical
OFDM systems," IEEE Photon. Technol. Lett. 19, 134-136 (2007).

A. J. Lowery, "Fiber nonlinearity mitigation
in optical links that use OFDM for dispersion compensation," IEEE Photon. Technol. Lett. 19, 1556-1558 (2007).

X. Yi, W. Shieh, T. Yan, "Phase estimation for coherent optical OFDM," IEEE Photonics Technology Letters 19, 919-921 (2007).

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

W. Shieh, W. Chen, R. S. Tucker, "Polarisation mode dispersion mitigation
in coherent optical orthogonal frequency division multiplexed systems," Electron. Lett. 42, 996-997 (2006).

J. Armstrong, A. J. Lowery, "Power efficient optical OFDM," Electron. Lett. 42, 370-371 (2006).

W. Shieh, C. Athaudage, "Coherent optical orthogonal
frequency division multiplexing," Electron.
Lett. 42, 587-588 (2006).

J. M. Tang, P. M. Lane, K. A. Shore, "Transmission performance of
adaptively modulated optical OFDM signals in multimode fiber links," IEEE Photon. Technol. Lett. 18, 205-207 (2006).

O. Gonzalez, R. Perez-Jimenez, S. Rodriguez, J. Rabadan, A. Ayala, "Adaptive OFDM system for communications
over the indoor wireless optical channel," IEE
Proc.–Optoelectron. 153, 139-144 (2006).

J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of
adatively modulated optical OFDM signals over multimode fibers using directly
modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).

D. Dardari, "Joint clip and quantization
effects characterization in OFDM receivers," IEEE
Trans. Circuits Syst. I: Fundamental Theory Applicat. 53, 1741-1748 (2006).

U. Onunkwo, L. Ye, A. Swami, "Effect of timing jitter on OFDM-based UWB systems," IEEE J. Sel. Areas Commun. 24, 787-793 (2006).

O. Gonzalez, R. Perez-Jimenez, S. Rodriguez, J. Rabadan, A. Ayala, "OFDM over indoor wireless optical channel," IEE Proc.—Optoelectronics 152, 199-204 (2005).

A. J. Lowery, J. Armstrong, "10 Gbit/s multimode fiber link
using power-efficient orthogonal-frequency-division multiplexing," Optics Expr. 13, 10003-10009 (2005).

S. G. Wilson, M. Brandt-Pearce, C. Qianling, J. H. Leveque, III"Free-space
optical MIMO transmission with Q-ary PPM," IEEE
Trans. Commun. 53, 1402-1412 (2005).

A. F. Molisch, M. Z. Win, "MIMO systems with antenna selection," IEEE Microw. Mag. 5, 46-56 (2004).

A. J. Paulraj, D. A. Gore, R. U. Nabar, H. Bolcskei, "An overview of MIMO communications—A
key to gigabit wireless," Proc. IEEE 92, 198-218 (2004).

I. Koffman, V. Roman, "Broadband wireless access solutions based
on OFDM access in IEEE 802.16," IEEE Commun.
Mag. 40, 96-103 (2002).

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

A. Garcia Armada, "Understanding
the effects of phase noise in orthogonal frequency division multiplexing (OFDM)," IEEE Trans. Broadcasting 47, 153-159 (2001).

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J. Stott, "The effects of phase noise
in COFDM," EBU Tech. Rev. 12-25 (1998).

W. Shieh, C. Athaudage, "Coherent optical orthogonal
frequency division multiplexing," Electron.
Lett. 42, 587-588 (2006).

J. Armstrong, A. J. Lowery, "Power efficient optical OFDM," Electron. Lett. 42, 370-371 (2006).

W. Shieh, W. Chen, R. S. Tucker, "Polarisation mode dispersion mitigation
in coherent optical orthogonal frequency division multiplexed systems," Electron. Lett. 42, 996-997 (2006).

O. Gonzalez, R. Perez-Jimenez, S. Rodriguez, J. Rabadan, A. Ayala, "Adaptive OFDM system for communications
over the indoor wireless optical channel," IEE
Proc.–Optoelectron. 153, 139-144 (2006).

O. Gonzalez, R. Perez-Jimenez, S. Rodriguez, J. Rabadan, A. Ayala, "OFDM over indoor wireless optical channel," IEE Proc.—Optoelectronics 152, 199-204 (2005).

A. Tarighat, R. C. J. Hsu, A. Shah, A. H. Sayed, B. Jalali, "Fundamentals and challenges of optical multiple-input
multiple-output multimode fiber links," IEEE
Commun. Mag. 45, 57-63 (2007).

J. A. C. Bingham, "Multicarrier modulation for
data transmission: An idea whose time has come," IEEE
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J. B. Carruthers, J. M. Kahn, "Multiple-subcarrier modulation
for nondirected wireless infrared communication," IEEE
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A. P. T. Lau, X. Lei, W. Ting, "Performance of receivers and detection algorithms for modal
multiplexing in multimode fiber systems," IEEE
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W. Y. Zou, Y. Wu, "COFDM: An overview," IEEE
Trans. Broadcasting 41, 1-8 (1995).

D. Dardari, "Joint clip and quantization
effects characterization in OFDM receivers," IEEE
Trans. Circuits Syst. I: Fundamental Theory Applicat. 53, 1741-1748 (2006).

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

S. G. Wilson, M. Brandt-Pearce, C. Qianling, J. H. Leveque, III"Free-space
optical MIMO transmission with Q-ary PPM," IEEE
Trans. Commun. 53, 1402-1412 (2005).

N. Letzepis, I. Holland, W. Cowley, "The Gaussian free space optical
MIMO channel with Q-ary pulse position modulation," IEEE
Trans. Wireless Commun. 7, 1744-1753 (2008).

I. Koffman, V. Roman, "Broadband wireless access solutions based
on OFDM access in IEEE 802.16," IEEE Commun.
Mag. 40, 96-103 (2002).

J. Armstrong, B. J. C. Schmidt, "Comparison of asymmetrically
clipped optical OFDM and DC-biased optical OFDM in AWGN," IEEE Commun. Lett. 12, 343-345 (2008).

U. Reimers, "Digital video broadcasting," IEEE Commun. Mag. 36, 104-110 (1998).

J. S. Chow, J. C. Tu, J. M. Cioffi, "A discrete multitone transceiver system
for HDSL applications," IEEE J. Sel. Areas Commun. 9, 895-908 (1991).

N. Cvijetic, S. G. Wilson, M. Brandt-Pearce, "Performance bounds for free-space
optical MIMO systems with APD receivers in atmospheric turbulence," IEEE J. Sel. Areas Commun. 26, 3-12 (2008).

U. Onunkwo, L. Ye, A. Swami, "Effect of timing jitter on OFDM-based UWB systems," IEEE J. Sel. Areas Commun. 24, 787-793 (2006).

A. F. Molisch, M. Z. Win, "MIMO systems with antenna selection," IEEE Microw. Mag. 5, 46-56 (2004).

A. J. Lowery, "Fiber nonlinearity mitigation
in optical links that use OFDM for dispersion compensation," IEEE Photon. Technol. Lett. 19, 1556-1558 (2007).

W. Shieh, "PMD-supported coherent optical
OFDM systems," IEEE Photon. Technol. Lett. 19, 134-136 (2007).

J. M. Tang, P. M. Lane, K. A. Shore, "Transmission performance of
adaptively modulated optical OFDM signals in multimode fiber links," IEEE Photon. Technol. Lett. 18, 205-207 (2006).

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

X. Yi, W. Shieh, T. Yan, "Phase estimation for coherent optical OFDM," IEEE Photonics Technology Letters 19, 919-921 (2007).

A. Garcia Armada, "Understanding
the effects of phase noise in orthogonal frequency division multiplexing (OFDM)," IEEE Trans. Broadcasting 47, 153-159 (2001).

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

J. Armstrong, "Analysis of new and existing
methods of reducing intercarrier interference due to carrier frequency offset
in OFDM," IEEE Trans. Commun. 47, 365-369 (1999).

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

L. J. Cimini, Jr."Analysis
and simulation of a digital mobile channel using orthogonal frequency division
multiplexing," IEEE Trans. Commun. CM-33, 665-675 (1985).

C.-L. Liu, "Impacts of I/Q imbalance on
QPSK-OFDM-QAM detection," IEEE Trans. Consumer
Electron. 44, 984-989 (1998).

E. Ip, J. M. Kahn, "Digital equalization of chromatic
dispersion and polarization mode dispersion," J.
Lightw. Technol. 25, 2033-2043 (2007).

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. Lightw.
Technol. 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. Lightw. Technol. 196-203 (2008).

M. Greenberg, M. Nazarathy, M. Orenstein, "Data parallelization by optical
MIMO transmission over multimode fiber with intermodal coupling," J. Lightw. Technol. 25, 1503-1514 (2007).

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

J. M. Tang, P. M. Lane, K. A. Shore, "High-speed transmission of
adatively modulated optical OFDM signals over multimode fibers using directly
modulated DFBs," J. Lightw. Technol. 24, 429-441 (2006).

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

A. J. Lowery, J. Armstrong, "10 Gbit/s multimode fiber link
using power-efficient orthogonal-frequency-division multiplexing," Optics Expr. 13, 10003-10009 (2005).

J. M. Kahn, J. R. Barry, "Wireless infrared communications," Proc. IEEE 85, 265-298 (1997).

A. J. Paulraj, D. A. Gore, R. U. Nabar, H. Bolcskei, "An overview of MIMO communications—A
key to gigabit wireless," Proc. IEEE 92, 198-218 (2004).

G. J. Foschini, M. J. Gans, "On limits of wireless communications
in a fading environment when using multiple antennas," Wireless
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