Molecular communications: channel model and physical layer techniques

TLDR

The article surveys recent molecular communications research from a telecommunications system design perspective, aiming to lay a foundation for higher‑layer studies and to motivate the development of functional prototypes. It reviews channel and noise models, compares molecular and radio‑wave path‑loss formulas, and discusses modulation, error‑correction coding, and transmitter/receiver signal‑processing techniques to mitigate inter‑symbol interference. Together, these parts outline essential physical‑layer techniques required for reliable and practical molecular communications.

Abstract

This article examines recent research in molecular communications from a telecommunications system design perspective. In particular, it focuses on channel models and state-of-the-art physical layer techniques. The goal is to provide a foundation for higher layer research and motivation for research and development of functional prototypes. In the first part of the article, we focus on the channel and noise model, comparing molecular and radio-wave pathloss formulae. In the second part, the article examines, equipped with the appropriate channel knowledge, the design of appropriate modulation and error correction coding schemes. The third reviews transmitter and receiver side signal processing methods that suppress inter-symbol interference. Taken together, the three parts present a series of physical layer techniques that are necessary to produce reliable and practical molecular communications.