Molecular communication is an emerging communication method using molecules or particles as a signal carrier, which enables nanodevices to exchange information at the nano- or micro-nano scale for information exchange and collaboration. Clock synchronization between nanomachines plays an important role in collaboration. The current research on the synchronization between nanodevices mainly focused on fixed molecular communication systems. However, the movement of nanodevices is widespread in molecular communication systems. This paper investigates the synchronization problem in mobile molecular communication systems based on diffusion. A simple but effective scheme for clock synchronization between mobile nanodevices is proposed. Based on the waveform of the molecular signal, the clock offset between mobile nanodevices is estimated by least square method. By using different types of molecules, the challenge for the practical varying molecule synthesis time duration is overcome. The proposed algorithm shows good performance by simulations.
Authors: Li Huang, Lin Lin (Tongji University, China), Fuqiang Liu (Tongji University), Hao Yan (Shanghai Jiao Tong University),
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