An investigative analysis on concentration-encoded subdiffusive molecular communication in nanonetworks

In this paper, for the first time ever in the domain of nanoscale communication networks, using fractional diffusion approach an investigative analysis has been presented to study the effects of anomalous subdiffusion on concentration-encoded molecular communication (CEMC) in an unbounded three-dimensional propagation medium between a pair of nanomachines. Results show that, unlike normal diffusion, the channel impulse response (CIR) in subdiffusion has distinctive time-dispersive properties that should be taken into consideration when designing a CEMC system based on anomalous subdiffusion. Finally, bit error rate (BER) performance of strength-based optimum receiver in subdiffusive CEMC has been presented in detail under several scenarios when transmission data rate and memory length vary.