On Novel ISI-Reducing Channel Codes for Molecular Communication via Diffusion

Molecular-communication-via-diffusion (MCvD) is one of the popular communication methods between bio-nano machines (BNMs) in nano-scale regions. However, the MCvD channel experiences significant inter-symbol interference (ISI) due to the probabilistic migration of the molecules. In this paper, we first introduce a family of novel ISI-reducing channel codes. We have shown that the proposed code can achieve a much higher code rate with a substantially lower ISI than the existing channel codes proposed in the literature to deal with ISI. Furthermore, we also derive an upper bound on the code rate and ISI. The numerical results show that ISI-reducing codes improve BER performance in a high-memory channel by reducing the effect of ISI on the channel.