Open Access Journal

ISSN : 2394-2320 (Online)

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

Open Access Journal

International Journal of Engineering Research in Computer Science and Engineering (IJERCSE)

Monthly Journal for Computer Science and Engineering

ISSN : 2394-2320 (Online)

Call For Paper : Vol 11, Issue 03, March 2024

Call for Paper

Vol 11, Issue 03, March 2024

Indexing

Monotonous Receiver for FLIP-OFDM in Optical Wireless Communication

Author : A RAGHU VARDHAN BABU 1 B.NANDA KUMAR 2

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Date of Publication :9th November 2017

Abstract: To guarantee nonnegative signals in optical wireless communication (OWC) systems, flipped orthogonal frequency division multiplexing (Flip-OFDM) transmits the positive and negative parts of the signal over two consecutive OFDM subframes (positive subframe and negative sub fame, respectively). The conventional receiver for Flip-OFDM recovers the data by subtracting the negative subframe from the positive one. However, the signal analysis shows that the signals in the two subframes both contain the information of the transmitted data and can be used together to decode the data. An iterative receiver is then proposed to improve the transmission performance of Flip-OFDM by exploiting the signals in both subframes. Simulation results show that the proposed iterative receiver provides the significant signal to noise ratio (SNR) gain over the conventional receiver. Moreover, the iterative receiver also outperforms the existing advanced receiver.

Reference :

    1. H. L. Minh, D. O’Brien, G. Faulkner, L. Zeng, K. Lee, D. Jung, Y. Oh, and E. T. Won, “100-mb/s NRZ visible light communications using a postequalized white led,” IEEE Photonics Technology Letters, vol. 21, no. 15, pp. 1063–1065, Aug. 2009.
    2. J.-B. Wang, Q.-S. Hu, J. Wang, M. Chen, and J.-Y. Wang, “Tight bounds on channel capacity for dimmable visible light communications,” Journal of Light wave Technology, vol. 31, no. 23, pp. 3771–3779, Dec. 2013.
    3. J. Armstrong, “OFDM for optical communications,” Journal of Lightwave Technology, vol. 27, no. 3, pp. 189– 204, Feb. 2009.
    4. D. J. Barros, S. K. Wilson, and J. M. Kahn, “Comparison of orthogonal frequency-division multiplexing and pulse-amplitude modulation in indoor optical wireless links,” IEEE Transactions on Communications, vol. 60, no. 1, pp. 153–163, Jan. 2012.
    5. N. Huang, J.-B. Wang, J. Wang, C. Pan, H. Wang, and M. Chen, “Receiver design for PAM-DMT in indoor optical wireless links,” IEEE Photonics Technology Letters, vol. 27, no. 2, pp. 161–164, Jan. 2015.
    6. J. Armstrong and B. Schmidt, “Comparison of asymmetrically clipped optical OFDM and DC-biased optical OFDM in AWGN,” IEEE Communications Letters, vol. 12, no. 5, pp. 343–345, May 2008.
    7. J. Armstrong and A. Lowery, “Power efficient optical OFDM,” Electronics Letters, vol. 42, no. 6, pp. 370–372, Mar. 2006.
    8. S. C. J. Lee, S. Randel, F. Breyer, and A. M. Koonen, “PAM-DMT for intensity-modulated and direct-detection optical communication systems,” IEEE Photonics Technology Letters, vol. 21, no. 23, pp. 1749–1751, Dec. 2009.
    9. N. Fernando, Y. Hong, and E. Viterbo, “Flip-OFDM for optical wireless communications,” in Proc. 2011 IEEE Information Theory Workshop (ITW), 2011, pp. 5–9.
    10. D. Tsonev and H. Haas, “Avoiding spectral efficiency loss in unipolar OFDM for optical wireless communication,” in Proc. 2014 IEEE International Conference on Communications (ICC), pp. 3336–3341.
    11. N. Fernando, Y. Hong, and E. Viterbo, “Flip-OFDM for unipolar communication systems,” IEEE Transactions on Communications, vol. 60, no. 12, pp. 3726–3733, Dec. 2012.
    12. D. Tsonev, S. Sinanovic, and H. Haas, “Novel unipolar orthogonal frequency division multiplexing (UOFDM) for optical wireless,” in Proc. 2012 IEEE 75th Vehicular Technology Conference (VTC Spring), pp. 1– 5.

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