Asynchronous Threshold-Based Detection for Quantity-Type-Modulated Molecular Communication Systems

Yang Kai Lin*, Wei An Lin, Chia Han Lee, Ping Cheng Yeh

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

26 Scopus citations


Diffusion-based molecular communication has become a promising scheme for communication between nanoscale devices, and various modulation schemes have recently been proposed, including type, quantity, and concentration modulation. In this paper, a novel approach of using both quantity and type of molecules to convey information is considered. An asynchronous threshold-based detection algorithm, called count-to-a-threshold (CTAT), is proposed and compared to the baseline detection approach of majority-counting (MC), which simply counts and compares the number of each type of molecule received. The MC detection algorithm, although straightforward and simple, cannot deliver satisfactory performance under the diffusion channel due to the randomness of the arriving time of molecules. On the other hand, the proposed CTAT detection, which exploits properties of the diffusion channel, greatly improves the performance of quantity-type-modulated diffusion-based molecular communication systems. Both simulations and theoretical analysis are conducted to confirm the effectiveness of the proposed CTAT detection scheme with and without background noise. Based on the analysis, guidelines to design proper molecule quantities, bit intervals, and block sizes to optimize the CTAT detection system are provided.

Original languageEnglish
Article number7181701
Pages (from-to)37-49
Number of pages13
JournalIEEE Transactions on Molecular, Biological, and Multi-Scale Communications
Issue number1
StatePublished - Mar 2015


  • Bit error rate
  • Detection algorithms
  • Molecular communication
  • Noise measurement
  • Radiation detectors
  • Receivers
  • Transmitters

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