Towards Practical and Scalable Molecular Networks
Towards Practical and Scalable Molecular Networks
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DOI：
10.1145/3603269.3604881
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发表时间：
2023-09
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影响因子：
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通讯作者：
Jiaming Wang;Sevda Öğüt;Haitham Al Hassanieh;Bhuvana Krishnaswamy
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作者：
Jiaming Wang;Sevda Öğüt;Haitham Al Hassanieh;Bhuvana Krishnaswamy
分子网络有可能使生物植入物和生物纳米机器在人体内进行通信。分子网络通过将分子释放到血液中来在节点之间发送和接收数据。在这项工作中，我们将探索如何将分子网络从单个发射器/接收器范式扩展到可以同时向接收器发送数据的多个发射器。我们确定了在分子网络中实现多址接入的独特挑战，这些挑战使我们无法使用标准的多址接入协议。这些挑战包括缺乏同步和反馈，分子信号的非负性，导致高ISI（符号间干扰）的分子通道的极长尾巴，以及可用于通信的有限类型的分子。我们提出了MoMA（分子多址接入），这是一种支持具有多个发射器的分子网络的协议。我们介绍了数据包检测，信道估计和编码/解码方案，利用分子网络的独特属性来解决上述挑战。我们在合成实验测试平台上评估MoMA，并证明它可以扩展到四个发射器，同时显着优于最先进的。
Molecular networks have the potential to enable bio-implants and biological nano-machines to communicate inside the human body. Molecular networks send and receive data between nodes by releasing molecules into the bloodstream. In this work, we explore how we can scale molecular networks from a single transmitter single receiver paradigm to multiple transmitters that can concurrently send data to a receiver. We identify unique challenges in enabling multiple access in molecular networks that prevent us from using standard multiple access protocols. These challenges include the lack of synchronization and feedback, the non-negativity of molecular signals, the extremely long tail of the molecular channel leading to high ISI (Inter-Symbol-Interference), and the limited types of molecules that can be used for communication. We present MoMA (Molecular Multiple Access), a protocol that enables a molecular network with multiple transmitters. We introduce packet detection, channel estimation, and encoding/decoding schemes that leverage the unique properties of molecular networks to address the above challenges. We evaluate MoMA on a synthetic experimental testbed and demonstrate that it can scale up to four transmitters while significantly outperforming the state-of-the-art.