Channel Capacity Analysis of DNA-based Molecular Communication with Length Encoding Mechanism

• Jialin Xie,
• Qiang Liu,
• Kun Yang,
• Lin Lin,

Vol. 15, No. 8, August 31, 2021
10.3837/tiis.2021.08.012, Download Paper (Free):

• channel capacity
• DNA-based molecular communication
• length encoding
• multi-layer foil
• nanopore

Abstract

The double helix structure of DNA makes it diverse, stable and can store information with high density, and these characteristics are consistent with the requirements of molecular communication for transport carriers. In this paper, a specific structure of molecular communication system based on DNA length coding is proposed. Transmitter (Tx) adopts the multi-layer golden foil design to control the release of DNA molecules of different lengths accurately, and receiver (Rx) adopts an effective and sensitive design of nanopore, and the biological information can be converted to the electric signal at Rx. The effect of some key factors, e.g., the length of time slot, transmission distance, the number of releasing molecules, the priori probability, on channel capacity is demonstrated exhaustively. Moreover, we also compare the transmission capacity of DNA-based molecular communication (DNA-MC) system and concentration-based molecular communication (MC) system under the same parameter setting, and the peak value of capacity of DNA-MC system can achieve 0.08 bps, while the capacity of MC system remains 0.025 bps. The simulation results show that DNA-MC system has obvious advantages over MC system in saving molecular resources and improving transmission stability.

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