受限制平面上扩散分子通信的模拟研究与分析
Simulation Study and Analysis of Diffusive Molecular Communications with an Apertured Plane
摘要：
分子扩散通信（MCvD）是一种利用信息分子的自由扩散机制实现纳米和微米尺度连接的方法。扩散传播中的随机性是造成码间干扰（ISI）的主要原因，也是高数据率MCvD应用的限制因素。在本文中，被认为是一个有孔的平面之间的发送器和接收器的MCvD链路。无论是人工放置还是自然发生，类似于有孔平面的表面或体积只允许一小部分分子通过。与直觉相反，观察到这种拓扑结构可以改善通信性能，因为可以通过孔径的分子是朝向接收器采取更直接路径的分子。此外，通过计算机模拟和理论信号评估指标命名的信号干扰和噪声幅度比（SINAR），它被发现，孔径的大小施加之间的权衡接收信号功率和码间干扰的MCvD系统的对抗能力，提示到最佳的孔径大小，最小化的比特出错率（BER）。据观察，误码率的趋势是准确地反映了SINAR，建议的度量的适用性MCvD系统中的优化任务，包括找到最佳的孔径大小的光圈平面。此外，计算机模拟和SINAR表明，所述最佳孔径尺寸受孔径位置和比特率的影响。最后，本文分析了径向和角度偏移的影响，在放置的光圈平面，并发现，降低误码率仍然是有效的，直到一定的偏移值。总的来说，我们的研究结果表明，有孔的平面状表面实际上可能有助于通信效率，即使它们降低了接收信号功率。
英文摘要：
Molecular communication via diffusion (MCvD) is a method of achieving nano- and micro-scale connectivity by utilizing the free diffusion mechanism of information molecules. The randomness in diffusive propagation is the main cause of inter-symbol interference (ISI) and the limiting factor of high data rate MCvD applications. In this paper, an apertured plane is considered between the transmitter and the receiver of an MCvD link. Either after being artificially placed or occurring naturally, surfaces or volumes that resemble an apertured plane only allow a fraction of the molecules to pass. Contrary to intuition, it is observed that such topology may improve communication performance, given the molecules that can pass through the aperture are the ones that take more directed paths towards the receiver. Furthermore, through both computer simulations and a theoretical signal evaluation metric named signal-to-interference and noise amplitude ratio (SINAR), it is found that the size of the aperture imposes a trade-off between the received signal power and the ISI combating capability of an MCvD system, hinting to an optimal aperture size that minimizes the bit error rate (BER). It is observed that the trend of BER is accurately mirrored by SINAR, suggesting the proposed metric's applicability to optimization tasks in MCvD systems, including finding the optimal aperture size of an apertured plane. In addition, computer simulations and SINAR show that said optimal aperture size is affected by the location of the aperture and the bit rate. Lastly, the paper analyzes the effects of radial and angular offsets in the placement of the apertured plane, and finds that a reduction in BER is still in effect up to certain offset values. Overall, our results imply that apertured plane-like surfaces may actually help communication efficiency, even though they reduce the received signal power.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
