Two-Way Molecular Communications

Jong Woo Kwak, H. Birkan Yilmaz, Nariman Farsad, Chan Byoung Chae, Andrea J. Goldsmith

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


For nano-scale communications, there must be cooperation and simultaneous communication between nano devices. To this end, in this paper, we investigate two-way (a.k.a. bi-directional) molecular communications between nano devices. If different types of molecules are used for the communication links, the two-way system eliminates the need to consider self-interference. However, in many systems, it is not feasible to use a different type of molecule for each communication link. Thus, we propose a two-way molecular communication system that uses a single type of molecule. We derive a channel model for this system and use it to analyze the proposed system's bit error rate, throughput, and self-interference. Moreover, we propose analog- and digital- self-interference cancellation techniques. The enhancement of link-level performance using these techniques is confirmed with both particle-based simulations and analytical results.

Original languageEnglish (US)
Article number9017969
Pages (from-to)3550-3563
Number of pages14
JournalIEEE Transactions on Communications
Issue number6
StatePublished - Jun 2020
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering


  • Molecular communication
  • and self-interference cancellation
  • two-way communication


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