Paper Accepted: Characterization of Cooperators in Quorum Sensing with 2D Molecular Signal Analysis
Our paper "Characterization of Cooperators in Quorum Sensing with 2D Molecular Signal Analysis" (link to arXiv version; here is the DOI) was accepted for publication in IEEE Transactions on Communications. This paper models quorum sensing by a community of bacteria. Each bacterium makes a single decision whether to cooperate based on the quorum sensing signal observed due to the aggregate bacterial population. We apply stochastic geometry to derive the quorum sensing channel statistics and the distribution of the number of bacteria that choose to cooperate. Derivations are verified with particle-based simulations. The paper was co-authored with Yuting Fang (Melbourne, Australia), Andrew W. Eckford (York, Canada), Nan Yang (Australian National University), and Jing Guo (Beijing Institute of Technology). An early version was presented at IEEE GLOBECOM 2019 under the title "Expected Density of Cooperative Bacteria in a 2D Quorum Sensing Based Molecular Communication System".
Posted to arXiv: A Survey of Molecular Communication in Cell Biology: Establishing a New Hierarchy for Interdisciplinary Applications
Our paper "A Survey of Molecular Communication in Cell Biology: Establishing a New Hierarchy for Interdisciplinary Applications" has been posted to arXiv. This survey provides a hierarchical framework to model communication-based behaviour in cells. We use the framework to review instances of communication in cell biological systems and identify opportunities to control behaviour and design new systems. We also apply the hierarchy to case studies of quorum sensing, neuronal signalling, and communication via DNA. In particular, the hierarchy provides a roadmap to understand how cell behaviour is informed and constrained by the propagation of molecular signals and the physical mechanisms for detecting those signals. The survey was co-authored with Dadi Bi (King's College London), Apostolos Almpanis (Warwick), Yansha Deng (King's College London), and Robert Schober (FAU Erlangen-Nuremberg, Germany).
Paper Accepted: Molecular Information Delivery in Porous Media
The paper "Molecular Information Delivery in Porous Media" (link to arXiv version; here is the DOI) was accepted for publication in IEEE Transactions on Molecular, Biological, and Multi-Scale Communications. We perform the first study of using a porous material as a diffusive communication channel. With the help of statistical breakthrough curves, we compare the characteristics of communication in a porous channel with that of the more familiar free space diffusion channel. One key difference is that increasing the Peclet number in a porous channel can increase the size of the tail of the channel impulse response, whereas this would decrease the size of the channel impulse response tail in the free space case. This paper was co-authored with Yuting Fang (ANU, Australia), Weisi Guo (Warwick), Matteo Icardi (Nottingham), and Nan Yang (ANU, Australia).
Paper Accepted: "Diffusive Molecular Communication in a Biological Spherical Environment with Partially Absorbing Boundary"
The paper "Diffusive Molecular Communication in a Biological Spherical Environment with Partially Absorbing Boundary" (link to arXiv version; here is the DOI) was accepted for publication in IEEE Transactions on Communications. We derive the diffusive channel response for a transmitter and receiver that are arbitrarily placed within a partially absorbing spherical shell. This paper was co-authored with Hamidreza Arjmandi and Mohammad Zoofaghari (both at Yazd University, Iran).
Paper Accepted - A Novel A Priori Simulation Algorithm for Absorbing Receivers in Diffusion-Based Molecular Communication Systems
The paper "A Novel A Priori Simulation Algorithm for Absorbing Receivers in Diffusion-Based Molecular Communication Systems" (link to arXiv version; here is the DOI) was accepted for publication in IEEE Transactions on NanoBioscience. We propose a Monte Carlo type approach to efficiently simulate surface absorption in microscopic particle-based simulations. The algorithm is shown to be very accurate when simulating with large time steps. This paper was co-authored with Yiran Wang and Nan Yang (both at ANU, Australia). An implementation of this algorithm is included in the AcCoRD simulator (Actor-based Communication via Reaction-Diffusion).
Paper Accepted - "Channel Modeling for Diffusive Molecular Communication - A Tutorial Review"
The paper "Channel Modeling for Diffusive Molecular Communication - A Tutorial Review" (link to arXiv version; here is the DOI) was accepted for publication in Proceedings of the IEEE. We do an extensive review of the end-to-end communication channel models that are available for diffusive molecular communication systems, as well discuss simulation methods and experimental testbeds. It should be a helpful resource for anyone interested in working in this area, whether you are new to the field or an experienced member. This paper was co-authored with colleagues at FAU (Germany): Vahid Jamali, Arman Ahmadzadeh, Wayan Wicke, and Robert Schober.
Paper Accepted - Symbol-by-Symbol Maximum Likelihood Detection for Cooperative Molecular Communication
The paper "Symbol-by-Symbol Maximum Likelihood Detection for Cooperative Molecular Communication" (link to arXiv version; here is the DOI) was accepted for publication in IEEE Transactions on Communications. We propose different methods of maximum-likelihood-based detection when a fusion centre combines observations of diffusing molecules by a collection of receivers. This paper was co-authored with Yuting Fang (ANU, Australia), Nan Yang (ANU, Australia), Andrew W. Eckford (York, Canada), and Rodney A. Kennedy (ANU, Australia).
Submissions are now open for the 2019 IEEE Global Communications Conference (IEEE GLOBECOM). I am chairing the track on Molecular, Biological and Multi-Scale Communications. Submissions are due 15 April 2019 via https://edas.info/N25091. You can find a text version of the call in the detail of this news item, or get the PDF from here.
Posted to arXiv - On the Analysis of Bacterial Cooperation with a Characterization of 2D Signal Propagation
Our paper "On the Analysis of Bacterial Cooperation with a Characterization of 2D Signal Propagation" was posted to arXiv. This paper derives new results on diffusion with degradation over a 2D environment and applies them to a model for bacteria quorum sensing. We then use approximations to estimate the expected density of cooperating bacteria. The paper was co-authored with Yuting Fang, Nan Yang, and Andrew W. Eckford, and submitted to IEEE ICC 2019.
Tutorial on Molecular Communication at IEEE GLOBECOM
I will be helping to deliver a tutorial on molecular communication at this year's IEEE GLOBECOM in Abu Dhabi, UAE. The full title is "Molecular Communication: Methods, Simulations, and Experiments" It will be presented with Andrew Eckford (York), Yansha Deng (KCL), and Nariman Farsad (Stanford). The tutorial will be held on Sunday, 9 December from 2pm-5:30pm.
Abstract: This tutorial introduces the emerging field of molecular communication wherein chemical signals are used to connect "tiny" machines such as living cells, synthetic biological devices and swarms of micro-scale robots. The tutorial begins with an overview of molecular communication systems and how they are modeled; each has a Transmitter, the Propagation Channel, and the Receiver, just as in a conventional communication system. Specific channel and noise models are presented and the derivation of channel impulse responses is discussed. Signal processing via chemical and genetic circuits is described. An overview and demonstration of specialized simulation tools is provided. The tutorial concludes with a discussion of the recent experimental implementations of molecular communication, and some of the most important open problems in this exciting new area.
My section of the tutorial will be on simulation methods, and will include a demonstration of the AcCoRD simulator.
To see about about the tutorial, including registration, please see here: http://globecom2018.ieee-globecom.org/program/tutorials#tut10