分子通信中的双时隙双向中继
Two-Time-Slot Bidirectional Relaying in Molecular Communication
摘要：
本文研究了分子通信中的双向/双向中继问题，提出了一种双时隙中继方案。与四时隙和三时隙方案相比，所提出的两时隙方案通过允许端节点在第一个时隙同时发送来显著提高吞吐量。与现有技术相比，所提出的方案采用用于双向中继的同构分子通信，其中所有节点（即，端节点和中继节点）被允许在相同类型的分子上操作，而不是针对不同的节点利用不同类型的分子。因此，这种同质分子中继的建议显着提高了资源重用能力。本文概括地描述了所提出的方案的传输和检测策略。此外，我们推导出分析的多址接入和广播阶段的比特错误概率，并提出端到端的比特错误概率的建议方案。值得注意的是，我们在理论推导中考虑了分子干扰的影响。进行了大量的仿真，结果表明，仿真结果与推导的理论分析吻合得很好。
英文摘要：
In this paper, we study the bidirectional/two-way relaying of molecular communication and propose a relaying scheme with two time slots. Compared to the four-time-slot and three-time-slot schemes, the proposed two-time-slot scheme improves the throughput by a significant extent by allowing the end nodes to transmit simultaneously at the very first time slot. In contrast to the existing techniques, the proposed scheme employs a homogeneous molecular communication for bidirectional relaying where all the nodes (i.e., end nodes and relay node) are allowed to operate on the same type of molecule instead of utilizing different types of molecule for different nodes. As a result, this proposal of homogeneous molecular relaying remarkably improves the resource reuse capability. This paper generically characterizes the transmission and detection strategies of the proposed scheme. Moreover, we derive the analytical bit error probabilities for the multiple access and broadcast phases and present the end-to-end bit error probability of the proposed scheme. It's noteworthy that we take it into account the effect of molecular interference in the theoretical derivations. Extensive simulation is carried out, and it is shown that simulation results match very well with the derived theoretical analysis.
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