Two way molecular communications

Abstract

For nano-scale communications, there must be cooperation and simultaneous communication between nano devices. To this end, we investigate two way (a.k.a. bi-directional) molecular communications between nano devises. By using a different type of molecules for the communication link, the proposed system eliminates the need to consider self-interference (SI). Using a different type of molecule for each communication link, however, is infeasible given the number of nano devices involved in such applications. Thus, we propose a two way molecular communication system using a single type of molecules. We analyze the proposed system's bit error rate (BER), throughput, channel models, and SI. Moreover, we propose analog- and digital- self-interference cancellation (SIC) techniques. Numerical and analytical results confirm the enhancement of link-level performances.