Positioning and data broadcasting using illumination pattern sequences displayed by LED arrays

Herrnsdorf, Johannes and Dawson, Martin D. and Strain, Michael J. (2018) Positioning and data broadcasting using illumination pattern sequences displayed by LED arrays. IEEE Transactions on Communications, 66 (11). 5582 - 5592. ISSN 0090-6778

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    Abstract

    Illumination of a scene with a time-sequence of spatial light patterns enables clients within the scene to navigate, receive broadcast wireless data, or make subsequent space-division multiple access connections to a high bandwidth wireless system. We have developed dedicated binary pattern sequences, for use with arrays of light-emitting diodes (LEDs), which are projected on the area of interest. The LED arrays can be in either active-matrix or matrix-addressable format. The properties of the different sequences are compared theoretically and experimentally, highlighting a trade-off between position update rate and resilience against pixel cross-talk and interference.