Accuracy of Ranging Based on DMT Visible Light Communication for Indoor Positioning

In this letter, we propose a ranging estimation scheme for indoor positioning based on high-speed visible light communication (VLC) system. The proposed scheme could provide high accuracy position of the receiver, without affecting the transmission efficiency of VLC. Discrete multi-tone (DMT) VLC signals emitted from light-emitting diodes (LEDs) are employed for both of high-speed communication and ranging estimation. The ranging estimation is implemented by measuring the received signal strength (RSS) of each sub-carrier of DMT training sequence based on the power attenuation model. The Cramer–Rao bound as the theoretical accuracy limit of the estimation is derived. Calculations for a typical indoor scenario show that the proposed RSS-based ranging estimation could achieve high accuracy of centimeter level.

[1]  Thomas Q. Wang,et al.  Position Accuracy of Time-of-Arrival Based Ranging Using Visible Light With Application in Indoor Localization Systems , 2013, Journal of Lightwave Technology.

[2]  Xian Jin,et al.  Wireless Indoor Optical Positioning With a Differential Photosensor , 2012, IEEE Photonics Technology Letters.

[3]  Chang-Soo Park,et al.  Optical wireless indoor positioning system using light emitting diode ceiling lights , 2012 .

[4]  施安存,et al.  Theoretical Accuracy Analysis of Indoor Visible Light Communication Positioning System Based on Received Signal Strength Indicator , 2014 .

[5]  Sang-Kook Han,et al.  An Indoor Visible Light Communication Positioning System Using a RF Carrier Allocation Technique , 2013, Journal of Lightwave Technology.

[6]  Mauro Biagi,et al.  An indoor localization algorithm in a small-cell LED-based lighting system , 2012, 2012 International Conference on Indoor Positioning and Indoor Navigation (IPIN).

[7]  Lu Liu,et al.  Integrated system of free-space optical and visible light communication for indoor wireless broadband access , 2015 .

[8]  K. Langer,et al.  513 Mbit/s Visible Light Communications Link Based on DMT-Modulation of a White LED , 2010, Journal of Lightwave Technology.

[9]  Masao Nakagawa,et al.  Fundamental analysis for visible-light communication system using LED lights , 2004, IEEE Transactions on Consumer Electronics.

[10]  M. Biagi,et al.  LAT indoor MIMO-VLC — Localize, access and transmit , 2012, 2012 International Workshop on Optical Wireless Communications (IWOW).

[11]  Mauro Biagi,et al.  LAST: A Framework to Localize, Access, Schedule, and Transmit in Indoor VLC Systems , 2015, Journal of Lightwave Technology.

[12]  Xian Jin,et al.  Characterization of Image Receivers for Optical Wireless Location Technology , 2015, IEEE Photonics Technology Letters.

[13]  H. Musoff,et al.  Cramer–Rao Lower Bound , 2015 .

[14]  Harald Haas,et al.  Indoor broadcasting via white LEDs and OFDM , 2009, IEEE Transactions on Consumer Electronics.

[15]  Ta‐Hsin Li.  Cramér-Rao Lower Bound , 2013 .

[16]  Adrian Neild,et al.  Visible light positioning: a roadmap for international standardization , 2013, IEEE Commun. Mag..

[17]  Wenjun Gu,et al.  Indoor location estimation with optical-based orthogonal frequency division multiplexing communications , 2016 .

[18]  S. Gezici,et al.  Comparative Theoretical Analysis of Distance Estimation in Visible Light Positioning Systems , 2016, Journal of Lightwave Technology.

[19]  Junyi Li,et al.  Visible light communication: opportunities, challenges and the path to market , 2013, IEEE Communications Magazine.