Capacity Analysis of Diffusive Molecular Communication System with an Interfering Receiver

Molecular communication via diffusion (MCvD) is one of the most prominent ways to transmit information among nanomachines in nanonetworks. In this paper, we investigate the channel capacity of a MCvD system including a transmitter, a fully-absorbing target receiver and a fully-absorbing interfering receiver. The Binary Concentration-based Shift Keying (BCSK) is used in the MCvD system for information modulation. We first derive expressions for the mutual information and channel capacity with the consideration of impacts from the interfering receiver, and then provide simulation results to evaluate the impacts of different parameters on the channel capacity. This research can provide a guidance for the design of MCvD systems with different channel capacity requirements.