Computer Science ›› 2019, Vol. 46 ›› Issue (4): 112-117.doi: 10.11896/j.issn.1002-137X.2019.04.018

• Network & Communication • Previous Articles     Next Articles

Analysis of Channel Capacity of Molecular Communication Model Based on Inter-user Interference

CHENG Zhen, LIN Fei, ZHAO Hui-ting, ZHANG Yi-ming   

  1. College of Computer Science and Technology,Zhejiang University of Technology,Hangzhou 310023,China
  • Received:2018-03-28 Online:2019-04-15 Published:2019-04-23

Abstract: In the diffusive multi-user molecular communication model,the released molecules follow Brownian motion rules,the Inter-Symbol Interference (ISI) and Inter-User Interference (IUI) among the molecules inevitably exist.Therefore,how to increase the channel capacity of system is a challenge in the current research on the molecular communication model.For the diffusive multi-user molecular communication model with On-Off Keying (OOK) modulation,the ISI and IUI were analyzed.The minimum average error probability criterion was used to obtain the optimal decision threshold in the detection process for the receiver nanomachine,and then the channel capacity was optimized.Finally,MATLAB simulations were used to demonstrate the effects of different parameters on the channel capacity performance of this molecular communication model.The simulation results show that by setting appropriate prior probability,increasing the diffusion coefficient and time slot duration,reducing the distance between the transmitter nanomachine and the receiver nanomachine and the number of users,the channel capacity of the molecular communication model based on IUI can be improved,and the bit error rate is reduced.

Key words: Channel capacity, Inter-user interference, Molecular communication, Optimal decision threshold

CLC Number: 

  • TP391.9
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