Year: 2021
Type: article
Abstract: Significant inter-symbol interference (ISI) challenges the achievement of reliable, high data-rate molecular communication via diffusion. In this paper, a hybrid modulation based on pulse position and concentration is proposed to mitigate ISI. By exploiting the time dimension, molecular concentration and position modulation (MCPM) increases the achievable data rate over conventional concentration and position-based modulations. In addition, unlike multi-molecule schemes, this hybrid scheme employs a single-molecule type and so simplifies transceiver implementations. In the paper, the optimal sequence detector of the proposed modulation is provided as well as a reduced complexity detector (two-stage, position-concentration detector, TPCD). A tractable cost function based on the TPCD detector is proposed and employed to optimize the design of the hybrid modulation scheme. In addition, the approximate probability of error for the MCPM-TPCD system is derived and is shown to be tight with respect to simulated performance. Numerically, MCPM shows improved performance over standard concentration and pulse position-based schemes in the low transmission power and high bit-rate regime. Furthermore, MCPM offers increased robustness against synchronization errors.
Authors: Mustafa Can Gursoy, Daewon Seo, Urbashi Mitra
Language: English
Subfield: Biomedical Engineering
Field: Engineering
Domain: Physical Sciences
Open Access status: green
Awards: G2291874825, Timely Communication: Theory and Practice for the Automated Society, G4657123650, CIF: Small: Statistical Learning Methods for Communications, Sensing and Control in Actuated Wireless Networks, ADAPTING SIGNAL RECOVERY ALGORITHMS FOR ACCURATE AND EFFICIENT REACTION RATE CALCULATIONS, CIF: Small: Modeling and Analysis of Microbial Signaling, G8741606322
OpenAlex ID: W3092628693