Multiple Channel Access Techniques for Diffusion-Based Molecular Communications

Conference: SCC 2017 - 11th International ITG Conference on Systems, Communications and Coding
02/06/2017 - 02/09/2017 at Hamburg, Germany

Proceedings: ITG-Fb. 268: SCC 2017

Pages: 6Language: englishTyp: PDF

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Korte, Sebastian; Damrath, Martin; Damrath, Martin; Hoeher, Peter Adam (Faculty of Engineering, University of Kiel, Kaiserstr. 2, 24143 Kiel, Germany)

In this work, a transmission link between an arbitrary number of point sources and one spherical absorbing receiver is established considering diffusion-based molecular propagation in a three-dimensional environment filled with a fluid medium without flow. Therefore an equivalent discrete time channel model for multiuser communication is derived, molecule shift keying is used as modulation technique and an appropriate low-complexity adaptive threshold detector is implemented. For multiple channel access, molecular time division multiple access (MoTDMA) and as a main contribution molecular code division multiple access (MoCDMA) are introduced. The performances of the developed communication systems are analyzed in terms of bit-error-rate running numerical simulations.