Nano-machine molecular communication over a moving propagation medium

Publication date: September 2013 Source:Nano Communication Networks, Volume 4, Issue 3 Author(s): Hoda ShahMohammadian , Geoffrey G. Messier , Sebastian Magierowski In this paper, we study a molecular communication system operating over a moving propagation medium. Using the convection–diffusion equation, we present the first separate models for the channel response and the corrupting noise. The flow-based molecular channel is shown to be linear but time-varying and the noise corrupting the signal is additive white Gaussian with a signal dependent magnitude. By modelling the ligand–receptor binding process, it is shown that the molecular communication reception process in this channel has a low-pass characteristic that colours the additive noise. A whitening filter is proposed to compensate for this low-pass characteristic. Simulation results demonstrate the benefit of the whitening filter and the effect of medium motion on bit error rate.

Source: Nano Communication Networks - October 12, 2014 Category: Nanotechnology Source Type: research