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Asymmetrical Relaying in Molecular Communications.
IEEE Transactions on Nanobioscience
|December 20, 2021
Summary
This study addresses asymmetric molecular communication challenges by optimizing molecule types and diffusion rates. Novel methods improve relay system performance despite distance variations, enhancing molecular communication reliability.
Area of Science:
- Biotechnology and Nanotechnology
- Communication Engineering
- Information Theory
Background:
- Molecular communication via diffusion (MCvD) uses molecular diffusion for nanomachine communication, but is limited by short ranges due to random molecular motion.
- Existing MCvD relaying schemes often assume symmetric transmitter-receiver distances, which are impractical and can lead to system failure.
Purpose of the Study:
- To investigate asymmetric molecular links in a relay system for improved MCvD performance.
- To propose parameter optimization methods for uplink communication in asymmetric relaying systems.
Main Methods:
- Developed two parameter optimization techniques for uplink MCvD.
- Utilized transmitters emitting different molecule types with varying diffusion coefficients to overcome channel asymmetries.
- Analyzed the expected applicability of solutions to downlink communication due to channel symmetry.
Main Results:
- Achieved satisfactory overall system performance despite asymmetric molecular links.
- Demonstrated the effectiveness of proposed optimization methods in enhancing uplink communication.
- Presented and discussed bit error rate (BER) performances for the investigated scenarios.
Conclusions:
- The proposed methods effectively address performance degradation in asymmetric MCvD relay systems.
- The findings are expected to advance the practical implementation of reliable molecular communication networks.
- This research contributes to overcoming distance-related challenges in nanomachine communication.
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