Abstract

This paper analyzes the performances of indoor optical wireless data transmissions based on unipolar orthogonal frequency division multiplexing (OFDM). In particular, it is shown that using frequency-domain pre-equalization can provide benefits in terms of the reduction in the required optical transmit power for a given desired bit error rate (BER) from uncoded transmissions. Known for its power efficiency, asymmetrically clipped optical OFDM (ACO-OFDM) is considered as a unipolar modulation scheme for intensity modulation with direct detection (IM/DD). In addition, flip-OFDM is also considered as an alternative unipolar modulation scheme which is known to be as power efficient as ACO-OFDM. For both ACO-OFDM and flip-OFDM, analytical and simulation results show that using pre-equalization can save up to ${\bf 2}$ dB of transmit optical power for a typical indoor optical wireless transmission scenario with the bit rate of ${\bf 10}$ Mbps and the BER target of ${\bf 10^{-5}}$.

© 2013 IEEE

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  1. J. Armstrong, "OFDM for Optical Communications," J. Lightw. Tech. 27, 189 -204 (2009).
  2. J. R. Barry, Wireless Infrared Communications (Kluwer, 1994).
  3. J. M. Kahn, J. R. Barry, "Wireless infrared communications," Proc. IEEE 85 , 265-298 (1997).
  4. H. Elgala, R. Meshleh, H. Haas, "Indoor optical wireless communication: potential and state-of-the-art," IEEE Comm. Mag. 49 , 56-62 (2011).
  5. J. Armstrong, A. J. Lowery, "Power efficient optical OFDM," Electron. Lett. 42, 370-372 (2006).
  6. J. Armstrong, B. J. C. Schmidt, "Comparison of asymmetrically clipped optical OFDM and DC-biased optical OFDM in AWGN ," IEEE Comm. Lett. 12, 343-345 (2008).
  7. S. D. Dissanayake, J. Armstrong, "Comparison of ACO-OFDM, DCO-OFDM, and ADO-OFDM in IM/DD systems," J. Lightw. Tech. 31, 1063 -1072 (2013).
  8. N. Fernando, Y. Hong, E. Viterbo, "Flip-OFDM for optical wireless communications," Proc. IEEE Inf. Theory Workshop (2011) pp. 5-9.
  9. N. Fernando, Y. Hong, E. Viterbo, "Flip-OFDM for unipolar communication systems," IEEE Trans. Comm. 60, 3726-3733 (2012 ).
  10. S. K. Wilson, J. Armstrong, "Transmitter and receiver methods for improving asymmetrically-clipped optical OFDM ," IEEE Trans. Wireless Comm. 8, 4561-4567 (2009).
  11. J. G. Proakis, Digital Communications (McGraw-Hill, 1995).
  12. X. Li, J. Vucic, V. Jungnickel, J. Armstrong, "On the capacity of intensity-modulated direct-detection systems and the information rate of ACO-OFDM for indoor optical wireless applications," IEEE Trans. Comm. 60, 799-809 (2002).
  13. J. Carruthers, J. Kahn, "Modeling of nondirected wireless infrared channels," IEEE Trans. Commun. 45, 1260-1268 (1997).
  14. G. D. Forney, G. Ungerboeck, "Modulation and coding for linear Gaussian channels," IEEE Trans. Info. Theory 44, 2384-2415 (1998).
  15. GNU Octave. [Online]. Available: www.gnu.org/software/octave/.
  16. MATLAB. [Online]. Available: www.mathworks.com/products/matlab/.
  17. T. Cover, J. Thomas, Elements of Information Theory (Wiley, 1991).

2013 (1)

S. D. Dissanayake, J. Armstrong, "Comparison of ACO-OFDM, DCO-OFDM, and ADO-OFDM in IM/DD systems," J. Lightw. Tech. 31, 1063 -1072 (2013).

2012 ()

N. Fernando, Y. Hong, E. Viterbo, "Flip-OFDM for unipolar communication systems," IEEE Trans. Comm. 60, 3726-3733 (2012 ).

2011 (1)

H. Elgala, R. Meshleh, H. Haas, "Indoor optical wireless communication: potential and state-of-the-art," IEEE Comm. Mag. 49 , 56-62 (2011).

2009 (2)

J. Armstrong, "OFDM for Optical Communications," J. Lightw. Tech. 27, 189 -204 (2009).

S. K. Wilson, J. Armstrong, "Transmitter and receiver methods for improving asymmetrically-clipped optical OFDM ," IEEE Trans. Wireless Comm. 8, 4561-4567 (2009).

2008 (1)

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

2006 (1)

J. Armstrong, A. J. Lowery, "Power efficient optical OFDM," Electron. Lett. 42, 370-372 (2006).

2002 (1)

X. Li, J. Vucic, V. Jungnickel, J. Armstrong, "On the capacity of intensity-modulated direct-detection systems and the information rate of ACO-OFDM for indoor optical wireless applications," IEEE Trans. Comm. 60, 799-809 (2002).

1998 (1)

G. D. Forney, G. Ungerboeck, "Modulation and coding for linear Gaussian channels," IEEE Trans. Info. Theory 44, 2384-2415 (1998).

1997 (2)

J. Carruthers, J. Kahn, "Modeling of nondirected wireless infrared channels," IEEE Trans. Commun. 45, 1260-1268 (1997).

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

IEEE Trans. Commun. (1)

J. Carruthers, J. Kahn, "Modeling of nondirected wireless infrared channels," IEEE Trans. Commun. 45, 1260-1268 (1997).

IEEE Trans. Info. Theory (1)

G. D. Forney, G. Ungerboeck, "Modulation and coding for linear Gaussian channels," IEEE Trans. Info. Theory 44, 2384-2415 (1998).

Electron. Lett. (1)

J. Armstrong, A. J. Lowery, "Power efficient optical OFDM," Electron. Lett. 42, 370-372 (2006).

IEEE Comm. Lett. (1)

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

IEEE Comm. Mag. (1)

H. Elgala, R. Meshleh, H. Haas, "Indoor optical wireless communication: potential and state-of-the-art," IEEE Comm. Mag. 49 , 56-62 (2011).

IEEE Trans. Comm. (2)

N. Fernando, Y. Hong, E. Viterbo, "Flip-OFDM for unipolar communication systems," IEEE Trans. Comm. 60, 3726-3733 (2012 ).

X. Li, J. Vucic, V. Jungnickel, J. Armstrong, "On the capacity of intensity-modulated direct-detection systems and the information rate of ACO-OFDM for indoor optical wireless applications," IEEE Trans. Comm. 60, 799-809 (2002).

IEEE Trans. Wireless Comm. (1)

S. K. Wilson, J. Armstrong, "Transmitter and receiver methods for improving asymmetrically-clipped optical OFDM ," IEEE Trans. Wireless Comm. 8, 4561-4567 (2009).

J. Lightw. Tech. (2)

J. Armstrong, "OFDM for Optical Communications," J. Lightw. Tech. 27, 189 -204 (2009).

S. D. Dissanayake, J. Armstrong, "Comparison of ACO-OFDM, DCO-OFDM, and ADO-OFDM in IM/DD systems," J. Lightw. Tech. 31, 1063 -1072 (2013).

Proc. IEEE (1)

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

Other (6)

J. R. Barry, Wireless Infrared Communications (Kluwer, 1994).

N. Fernando, Y. Hong, E. Viterbo, "Flip-OFDM for optical wireless communications," Proc. IEEE Inf. Theory Workshop (2011) pp. 5-9.

J. G. Proakis, Digital Communications (McGraw-Hill, 1995).

GNU Octave. [Online]. Available: www.gnu.org/software/octave/.

MATLAB. [Online]. Available: www.mathworks.com/products/matlab/.

T. Cover, J. Thomas, Elements of Information Theory (Wiley, 1991).

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