This letter develops a one-dimensional (1D) diffusion-based molecular communication system to analyze channel responses between a single transmitter (TX) and two fully-absorbing receivers (RXs). Incorporating molecular degradation in the environment, rigorous analytical formulas for i) the fraction of molecules absorbed, ii) the corresponding hitting rate, and iii) the asymptotic fraction of absorbed molecules as time approaches infinity at each RX are derived when an impulse of molecules are released at the TX. By using particle-based simulations, the derived analytical expressions are validated. Simulations also present the distance ranges of two RXs that do not impact molecular absorption of each other, and demonstrate that the mutual imfluence of two active RXs reduces with the increase in the degradation rate.

中文翻译：

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具有两个吸收接收器的一维分子通信的信道表征

这封信开发了一种基于一维 (1D) 扩散的分子通信系统，用于分析单个发射器 (TX) 和两个全吸收接收器 (RX) 之间的通道响应。结合环境中的分子降解，推导出 i) 被吸收分子的分数，ii) 相应的命中率，和 iii) 随着时间在每个 RX 处接近无穷大时被吸收分子的渐近分数，当分子的脉冲被推导出来时在 TX 发布。通过使用基于粒子的模拟，可以验证导出的分析表达式。模拟还展示了不影响彼此分子吸收的两个 RX 的距离范围，并证明两个活性 RX 的相互影响随着降解率的增加而降低。