In this paper an analytical model is introduced to describe the impulse response of the diffusive channel between a pointwise transmitter and a given fully-absorbing (FA) receiver in a molecular communication (MC) system. The presence of neighbouring FA nanomachines in the environment is taken into account by describing them as sources of negative molecules. The channel impulse responses of all the receivers are linked in a system of integral equations. The solution of the system with two receivers is obtained analytically. For a higher number of receivers the system of integral equations is solved numerically. It is also shown that the channel impulse response shape is distorted by the presence of the interferers. For instance, there is a time shift of the peak in the number of absorbed molecules compared to the case without interference, as predicted by the proposed model. The analytical derivations are validated by means of particle based simulations.
翻译:本文采用了一种分析模型,以描述分子通信系统中点向发射器和特定完全吸收式接收器(FA)接收器在分子通信系统中的脉冲反应。将相邻的FA纳米机器在环境中的存在描述为负分子的来源,即考虑到它们存在于环境中。所有接收器的脉冲反应都在一个整体方程系统中连接在一起。用两个接收器来分析获得系统的解决方案。对于更多的接收器来说,集成方程系统是用数字方式解决的。还表明,干扰器的存在扭曲了频道的脉冲反应形状。例如,按照拟议模型的预测,与无干扰的情况相比,吸收分子的峰值与案件之间的时间变化。分析结果通过基于粒子的模拟进行验证。