In molecular communication (MC), molecules are released from the transmitter to convey information. This paper considers a realistic molecule shift keying (MoSK) scenario with two species of molecule in two reservoirs, where the molecules are harvested from the environment and placed into different reservoirs, which are purified by exchanging molecules between the reservoirs. This process consumes energy, and for a reasonable energy cost, the reservoirs cannot be pure; thus, our MoSK transmitter is imperfect, releasing mixtures of both molecules for every symbol, resulting in inter-symbol interference (ISI). To mitigate ISI, the properties of the receiver are analyzed and a detection method based on the ratio of different molecules is proposed. Theoretical and simulation results are provided, showing that with the increase of energy cost, the system achieves better performance. The good performance of the proposed detection scheme is also demonstrated.

翻译：在分子通信（MC）中，分子从发射机释放以传递信息。本文考虑一个具有两种分子和两个储液池的实际情况下的分子移位键控（MoSK）场景，其中分子从环境中采集并分配到不同储液池中，通过储液池间的分子交换实现净化。该过程消耗能量，在合理能量成本下，储液池无法达到完全纯净；因此，我们的MoSK发射机是非理想的，每个符号均释放两种分子的混合物，导致符号间干扰（ISI）。为抑制ISI，分析了接收机的特性，并提出了一种基于不同分子比值的检测方法。理论分析与仿真结果表明，随着能量成本的增加，系统性能得到提升。所提出的检测方案的良好性能也得到了验证。