VaporISAC: Integrated Sensing and Communication via Molecular Signals
Emerging Technologies
Summary
The authors introduce VaporISAC, a new system that uses chemical vapor signals to both send messages and sense the environment at the same time. Unlike traditional systems that use radio waves and can fail in messy or blocked spaces, VaporISAC works well in places where electromagnetic signals struggle. Their system analyzes the chemical vapor patterns to understand things like airflow and smoke while also decoding the message sent. This method doesn't replace existing communication but adds a useful option for difficult environments. The paper explains how VaporISAC works, shows early tests, and discusses future possibilities and challenges.
Authors
Sunasheer Bhattacharjee, Martín Schottlender, Pit Hofmann, Juan A. Cabrera, Frank H. P. Fitzek, Falko Dressler
Abstract
Conventional electromagnetic (EM)-based integrated sensing and communication (ISAC) systems degrade in cluttered, obstructed, and radio-frequency-hostile environments, while macroscopic molecular communication (MC) remains largely unexplored as an ISAC medium. This article introduces VaporISAC, a molecular ISAC framework in which chemical vapor pulses simultaneously convey information and probe the propagation environment, enabling a one signal, two outputs paradigm. The same received waveform is jointly processed to recover transmitted information and infer environmental properties such as airflow, turbulence, smoke, and chemical conditions. Rather than replacing conventional EM-based ISAC, VaporISAC complements existing approaches in chemically dynamic, infrastructure-limited, and EM-challenged environments. The sensing principles, system architecture, proof-of-concept demonstrations, emerging applications, and open research challenges of VaporISAC are presented, positioning it as a promising new paradigm for resilient communication and environmental sensing.