(Funded by TUBITAK under 1001 programme)
Project accepted. Contract in preparation.
(Funded by TUBITAK under 1001 programme)
1 June 2017 - 1 June 2019
(Joint project funded by TUBITAK and S. Korean NRF)
24.6.2013 - 24.12.2014
(Funded by BAP under project number 7436)
01.10.2012 - 01.04.2015
(Funded by TUBITAK under 1001 programme)
24.03.2011 - 24.03.2013
(Funded by BAP under project number 6024)
Recent advances in nanotechnology and biotechnology pave the way for several applications that were once thought to be science-fiction. Establishing communication among nano-devices that are especially designed for in vivo applications will enable these devices to coordinate with each other in the nano-scale and achieve more complicated tasks. The difficulties of antenna design in the nano-scale, along with directivity issues and limited energy resources prevent conventional electromagnetic wave based communications from being used. Recent studies consider molecular communications as an alternative to electromagnetic communications. Among the several types of molecular communications techniques considered in the literature, molecular communications via diffusion has attracted attention due to its bio-compatibility and low energy costs.
The biggest challenge faced by molecular communication via diffusion is the intersymbol interference that is caused by the random nature of diffusion. Some of the messenger molecules that are released to the channel by conventional modulation schemes fail to arrive at the receiver in the given signal interval and can cause problems for the detection methods employed by the receiver. Although there are several studies in the literature that try to minimize the effects of intersymbol interference, they usually lead to more complicated communication systems. In this project, index modulation techniques that employ multiple transmitters and receivers will be designed for molecular communications. Index modulation allows only one of the transmit antennas to be active in a given interval and the receiver can demodulate additional information bits by detecting which transmit antennas has been used. The reference system proposed in the project team’s recent contribution to the literature, will be redesigned by considering the properties of the molecular communication channel and a robust and practical molecular communication system that can operate without positioning, synchronization, and alignment information at the receiver will be obtained. This will be the first study in the literature that considers molecular index modulation with realistic assumptions. The designed techniques will be implemented and perfected on a micro-scale testbed that will also be designed and built within the project. Although there exist macro-scale testbeds in the molecular communication system that are usually provided for proof-of-concept demonstrations, the micro-scale testbed to be designed in this project will be the first one in the literature that will allow the design of a practical molecular index modulation system.
Project management will be handled by an interdisciplinary team with high level of experiences on molecular communications, wireless communications, and nano-chemistry. These experiences brought together are expected to bring along designs that have strong theory and implementation aspects. The project outcomes will be published in prestigious international journals and conferences, and intellectual property rights will be protected. Three graduate students will be financially supported through the project and will be encouraged to publish their results. The workshop that is planned to be organized at the end of the first year will allow young researchers in the field to get into the exciting field of molecular communications.
With the rapid development of nanotechnology, manufacturing nano-machines with computing capabilities will be feasible in the near future. Such nanomachines by themselves will have limited computing and memory capacity, and will require meticulously planned communication and coordination for performing complex tasks. Therefore, communication systems at those levels are the crucial components to be designed and developed for nanotechnology to achieve its full capacity. Using nano-machines to aid healthcare applications is one of the most substantial and practical area of utilization in nanotechnology. There is also a considerable deficiency in association of theoretical work and useful applications. To this end, it is very important to devise novel, realistic, and in-detail models and simulations which take the biological aspect of such applications into consideration.
For more information about MEDUSA Project, please visit the project page.
The design of nanoscale machines and engineered cells established a new research area, focusing on communication needs of these devices where new types of motivations and constraints apply. For nanomachines, accomplishing complex tasks will only be possible via efficient communication among themselves and external systems. Molecular communication, which is used by many living organisms (e.g., communication via diffusion, ion signaling, microtubule – molecular motors, pheromone signaling), is one of the methods that can be used for inter-nanomachine communication. In our study, the optimum achievable data rate of Communication via Diffusion (CvD), will be explored. Models for co-channel interference and noise will be developed, and their effect on optimum data rate will be investigated.
The demand for processor power and devices operating at low power has pushed the microchip design to the physical limits of technology. This demand has been the most active driving force for the development of nanotechnology. However, when considered by individually, nano-machines performing significant jobs with limited processing power and memory appear unrealistic without the presence of cooperation by communication. A nano communication network is the technology that will satisfy this demand. Among the nano communication methods, the bio-hybrid approach, which is based on communication with molecules, is the most likely approach to succeed in short term due to the fact that it mimics the naturally existing systems in the nature.
Among the most effective methods that can be used for communication between nano-machines is molecular communication inspired by the communication techniques in biological systems. Although the talents of nano-machines produces with top-down and bottom-up approaches are not satisfactory yet, the biological machines existing in nature can carry on rather complex processes in nano and micrometer scales. Thus, we use the molecular communication approach for nano-networks in this project.
Molecular communication is the general name for the communication systems, where the information exchange is provided via molecules among nano and micro scale devices. In the literature, various methods have been proposed for this new communication system. Communication via Diffusion (CvD) is one of the most important methods among these.
The dynamics of diffusion have to be thoroughly understood, since the messenger molecules sent from one nano-machine to another spread in the medium with diffusion. Moreover, the dynamics of diffusion have to be modeled with nano-communication networks in mind, in order to develop structures consisting of more than one nano-machine and analyze their performance. Such modeling will enable new research mainly on the physical layer. The outcomes of this research will be enlightening for further research on data link layer and transmitter/receiver design.
In this project, our aim is to conduct research on the fields mentioned above in the CvD systems, publish papers that will contribute to the both national and international literature, construct the necessary infrastructure for participating in international projects by increasing the nano-communication networks knowledge base in Turkey, and educate competent PhD-grade researchers.
Nanotechnology is a new, emerging field dealing with the development and manufacturing of nanoscale materials and machines. These machines, called nanomachines, are expected to have the capabilities of their higher-scale counterparts in the nanoscale. In order to perform more complex tasks, the nanomachines should be able to communicate with each other. Communication systems that enable information exchange between nanomachines are called nanonetworks. The methods proposed to realize nanonetworks are composed of two groups: Traditional Communication Systems and Molecular Communication Systems. Traditional systems are systems already being used by higher scale machines (e.g., electromagnetic communication, cable-based communication, acoustic communication, and heat communication). Molecular communication systems are systems that are either being used by living organism cells or systems inspired from biological cell communication (e.g., communication via diffusion, ion signaling, microtubule - molecular motors, pheromone signaling).