In this work, a particle-based simulation of two differential detectors for a reactive receiver in mobile molecular communication (MMC) is presented. The received signal is filtered and used for detection. On-off keying (OOK) is used as the modulation in both schemes. The detector in first scheme finds two-time instants in the filtered signal to maximize absolute concentration difference within the same bit duration. Then the concentration difference is used as the decision metric. The second scheme uses Manchester coding at the transmitter where the bit-0 and bit-1 are represented as the symbol [0 1] and symbol [1 0] respectively. The difference between the peak values of filtered signals in successive bit durations is used as the decision metric. Correlation between the analytical signal and particle-based signal is also found. Further, the bit error rate (BER) of the proposed detection schemes is calculated using the analytical signal and validated using the particle-based signal. Simulation results show a good agreement between the BER obtained using the analytical signal and the particle-based signal.

中文翻译：

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移动分子通信差分探测器的基于粒子的模拟


在这项工作中，提出了移动分子通信（MMC）中反应接收器的两个差分探测器的基于粒子的模拟。接收到的信号被过滤并用于检测。两种方案中都使用开关键控 (OOK) 作为调制。第一个方案中的检测器在滤波后的信号中找到两个时刻，以最大化相同位持续时间内的绝对浓度差。然后将浓度差用作决策指标。第二种方案在发射机处使用曼彻斯特编码，其中位0和位1分别表示为符号[0 1]和符号[1 0]。连续比特持续时间内滤波信号的峰值之间的差被用作决策度量。还发现了分析信号和基于粒子的信号之间的相关性。此外，所提出的检测方案的误码率（BER）是使用分析信号计算的，并使用基于粒子的信号进行验证。仿真结果表明，使用分析信号和基于粒子的信号获得的 BER 非常一致。