Equilibrium Signaling: Molecular Communication Robust to Geometry Uncertainties

A basic property of any diffusion-based molecular communication system is the geometry enclosing container. In particular, influences system's behavior near boundary and in all existing modulation schemes governs receiver design. However, it not always straightforward to characterize system. This particularly case when operates scenarios where may be complex or dynamic. this article, we propose a new scheme-called equilibrium signaling-which robust uncertainties fluid boundary. design only depends on relative volumes transmitter receiver, entire Our scheme relies reversible reactions which ensure existence an state into information encoded. case, derive optimal detection rules develop simple effective estimation method obtain container volume. We also show that signaling can outperform classical schemes, such as concentration shift keying, under practical sampling constraints imposed by biological oscillators.