Abstract-This letter introduces a formalism for modeling time-variant channels for diffusive molecular communication systems. In particular, we consider a fluid environment where one transmitter nano-machine and one receiver nano-machine are subjected to Brownian motion in addition to the diffusive motion of the information molecules used for communication. Due to the stochastic movements of the transmitter and receiver nanomachines, the statistics of the channel impulse response change over time. We show that the time-variant behaviour of the channel can be accurately captured by appropriately modifying the diffusion coefficient of the information molecules. Furthermore, we derive an analytical expression for evaluation of the expected error probability of a simple detector for the considered system. The accuracy of the proposed analytical expression is verified via particle-based simulation of the Brownian motion.
REF has introduced a formalism for modeling time-variant channels for diffusive molecular communication systems, and analyzed the error performance of such channels.
Diffusive Mobile Molecular Communications Over Time-Variant Channels
IEEE Communications Letters
IEEE Communications Letters
Computer Science Mathematics