Abstract
Light Fidelity (LiFi) allows wireless data transmission via Light Emitting Diode (LED) using the visible light spectrum between 400 THz and 800 THz, with high transmission rate of 10 Gbps achieved. In order to guarantee reliable data transmission, we propose a joint frame detection and channel estimation approach for DC biased Optical Orthogonal Frequency Division Multiplexing (DCO-OFDM) LiFi systems, with a single DCO-OFDM training block used. By designing a training structure, frame detection and channel estimation can be performed simultaneously. The proposed frame detection method is powerful and suitable for high-speed LiFi systems, as it is robust against the effect of Inter-Symbol Interference (ISI) caused by the response speed of the LED. Simulation results show that the proposed frame detection approach significantly outperforms existing Radio Frequency (RF) based frame detection methods in terms of probability of false detection. Using the frame detection method, the channel estimation scheme can provide a Mean Square Error (MSE) performance, better than the Least-Square (LS) channel estimation with perfect frame detection.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Haas, H.: LiFi: conceptions, misconceptions and opportunities. In: 2016 IEEE Photonics Conference (IPC), pp. 680–681. IEEE Press (2016)
Hanzo, L., Haas, H., Imre, S., O’Brien, D., Rupp, M., Gyongyosi, L.: Wireless myths, realities, and futures: from 3G/4G to optical and quantum wireless 100, 1853–1888 (2012)
Haas, H., Yin, L., Wang, Y., Chen, C.: What is LiFi? J. Lightwave Technol. 147, 1533–1544 (2016)
Haas, H.: Wireless Data from Every Light Bulb. TED Website (2011)
Chun, H., Rajbhandari, S., Faulkner, G., Tsonev, D., Xie, E., McKendry, J.J.D., Gu, E., Dawson, M.D., O’Brien, D.C., Haas, H.: LED based wavelength division multiplexed 10 Gb/s visible light communications. J. Lightwave Technol. 34, 3047–3052 (2016)
Zeng, L., Obrien, D., Le-Minh, H., Lee, K., Jung, D., Oh, Y.: LiFi: improvement of date rate by using equalization in an indoor visible light communication system. In: 4th IEEE International Conference on Circuits and Systems for Communications, pp. 678–682. IEEE Press (2008)
Wu, L., Zhang, Z., Dang, J., Liu, H.: Adaptive modulation schemes for visible light communications. J. Lightwave Technol. 33, 117–125 (2015)
Schmidl, T.M., Cox, D.C.: Robust frequency and timing synchronization for OFDM. IEEE Trans. Commun. 45, 1613–1621 (1997)
Park, B., Cheon, H., Kang, C., Hong, D.: A novel timing estimation method for OFDM systems. IEEE Commun. Lett. 7, 239–241 (2003)
Tian, S., Panta, K., Suraweera, H.A., Schmidt, B.J.C., McLaughlin, S., Armstrong, J.: A novel timing synchronization method for ACO-OFDM based optical wireless communications. IEEE Trans. Wireless Commun. 7, 4958–4967 (2008)
Burton, A., Minh, H.L., Ghassemlooy, Z., Bentley, E., Botella, C.: Experimental demonstration of \(50\)-Mb/s visible light communications using 4 \(\times \) 4 MIMO. IEEE Photonics Technol. Lett. 26, 945–948 (2014)
Ying, K., Qian, H., Baxley, J.R., Yao, S.: Joint optimization of precoder and equalizer in MIMO VLC systems. IEEE J. Sel. Areas Commun. 33, 1949–1958 (2015)
Kahn, J.M., Barry, J.R.: Wireless infrared communications. Proc. IEEE 85, 265–298 (1997)
Jungnickel, V., Pohl, V., Nonnig, S., Helmolt, C.V.: A physical model of the wireless infrared communication channel. IEEE J. Sel. Areas Commun. 20, 631–640 (2002)
Tsonev, D., Videv, S., Haas, H.: Unlocking spectral efficiency in intensity modulation and direct detection systems. IEEE J. Sel. Areas Commun. 33, 1758–1770 (2015)
Acknowledgments
This work was supported by EPSRC under Established Career Fellowship Grant EP/K008757/1.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2017 Springer International Publishing AG
About this paper
Cite this paper
Jiang, Y., Safari, M., Haas, H. (2017). Joint Frame Detection and Channel Estimation for DCO-OFDM LiFi Systems. In: Sabir, E., GarcÃa Armada, A., Ghogho, M., Debbah, M. (eds) Ubiquitous Networking. UNet 2017. Lecture Notes in Computer Science(), vol 10542. Springer, Cham. https://doi.org/10.1007/978-3-319-68179-5_46
Download citation
DOI: https://doi.org/10.1007/978-3-319-68179-5_46
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-68178-8
Online ISBN: 978-3-319-68179-5
eBook Packages: Computer ScienceComputer Science (R0)