Browsing by Author "Tuǧcu, Tuna"

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Citation - WoS: 17
Citation - Scopus: 36
Channel Model of Molecular Communication Via Diffusion in a Vessel-Like Environment Considering a Partially Covering Receiver
(Institute of Electrical and Electronics Engineers Inc., 2018) Turan, Meric; Kuran, Mehmet Şükrü; Yilmaz, Huseyin Birkan; Demirkol, Ilker; Tuǧcu, Tuna
By considering potential health problems that a fully covering receiver may cause in vessel-like environments, the implementation of a partially covering receiver is needed. To this end, distribution of hitting location of messenger molecules (MM) is analyzed within the context of molecular communication via diffusion with the aim of channel modeling. The distribution of these MMs for a fully covering receiver is analyzed in two parts: angular and radial dimensions. For the angular distribution analysis, the receiver is divided into 180 slices to analyze the mean, standard deviation, and coefficient of variation of these slices. For the axial distance distribution analysis, Kolmogorov-Smirnov test is applied for different significance levels. Also, two different implementations of the reflection from the vessel surface (i.e., rollback and elastic reflection) are compared and mathematical representation of elastic reflection is given. The results show that MMs have tendency to spread uniformly beyond a certain ratio of the distance to the vessel radius. By utilizing the uniformity, we propose a channel model for the partially covering receiver in vessel-like environments and validate the proposed model by simulations. © 2018 Elsevier B.V., All rights reserved.
Citation - Scopus: 8
MOL-Eye: A New Metric for the Performance Evaluation of a Molecular Signal
(Institute of Electrical and Electronics Engineers Inc., 2018) Turan, Meric; Kuran, Mehmet Şükrü; Yilmaz, Huseyin Birkan; Chae, Chan Byoung; Tuǧcu, Tuna
Inspired by the eye diagram in classical radio frequency (RF) based communications, the MOL-Eye diagram is proposed for the performance evaluation of a molecular signal within the context of molecular communication. Utilizing various features of this diagram, three new metrics for the performance evaluation of a molecular signal, namely the maximum eye height, standard deviation of received molecules, and counting SNR (CSNR) are introduced. The applicability of these performance metrics in this domain is verified by comparing the performance of binary concentration shift keying (BCSK) and BCSK with consecutive power adjustment (BCSK-CPA) modulation techniques in a vessel-like environment with laminar flow. The results show that, in addition to classical performance metrics such as biterror rate and channel capacity, these performance metrics can also be used to show the advantage of an efficient modulation technique over a simpler one. © 2018 Elsevier B.V., All rights reserved.