Localization of a Nano-transmitter in a Diffusive MC System with Multiple Fully-absorbing Receivers

This paper presents new results about localization of a pointwise transmitter in a molecular communication (MC) diffusive channel by means of a spherical array whose elements are fully-absorbing (FA) receivers. The performance of two different spherical arrays is analyzed to estimate the position of the transmitter that differ in the configuration of the FA receivers on their surface. The proposed localization method relies on a model that has been recently developed to predict the temporal asymptotic cumulative number of molecules absorbed by each of the FA receivers. The approach first estimates the distances between the transmitter and the FA receivers and then use them in a multilateration technique. One of the most promising applications of localization in telemedicine is targeted-drug delivery, which is realized by means of nano-robots. Numerical results are used to demonstrate the accuracy of the proposed method.