一种面向计算封装内无线网络的带时间反转的MAC协议
A MAC Protocol with Time Reversal for Wireless Networks within Computing Packages
AI总结：
针对众核处理器封装内无线网络的码间干扰问题，提出基于时间反转的MAC协议TR-MAC，通过预编码和聚焦能量检测实现同时空并行传输，可在满足物理层要求的同时提升大规模计算架构的延迟与吞吐量性能。
摘要：
无线片上网络（Wireless Network-on-Chip, WNoC）是一种颇具前景的概念，为克服当前众核处理器封装内网络的可扩展性问题提供了解决方案。然而，芯片封装内部的电磁传播会导致能量混响，进而产生具有高延迟扩展的码间干扰（Inter-Symbol Interference, ISI）。时间反转（Time Reversal, TR）是一种利用具有丰富多径效应的独特时不变信道，将能量聚焦到目标收发器的技术。TR可同时缓解ISI和同信道干扰，从而实现空间与时间维度的并行通信。因此，只要采用介质访问控制（Medium Access Control, MAC）协议来高效共享无线介质，TR就是提升无线片上网络总带宽的理想备选方案。本文中，我们探索了一种适用于WNoC的简单却具备鲁棒性的基于TR的MAC协议（TR-MAC）设计。我们提出通过TR预编码和收发器端的聚焦能量检测，在同一时隙内利用同时存在的空间信道管理多路并行传输。我们的结果表明，TR-MAC可应用于大规模计算架构，在满足物理层严格要求的同时，还能改善延迟和吞吐量。
英文摘要：
Wireless Network-on-Chip (WNoC) is a promising concept which provides a solution to overcome the scalability issues in prevailing networks-in-package for many-core processors. However, the electromagnetic propagation inside the chip package leads to energy reverberation, resulting in Inter-Symbol Interference (ISI) with high delay spreads. Time Reversal (TR) is a technique that benefits the unique time-invariant channel with rich multipath effects to focus the energy to the desired transceiver. TR mitigates both ISI and co-channel interference, hence providing parallel communications in both space and time. Thus, TR is a versatile candidate to improve the aggregate bandwidth of wireless on-chip networks provided that a Medium Access Control (MAC) is used to efficiently share the wireless medium. In this paper, we explore a simple yet resilient TR-based MAC protocol (TR-MAC) design for WNoC. We propose to manage multiple parallel transmissions with simultaneous spatial channels in the same time slot with TR precoding and focused energy detection at the transceiver. Our results show that TR-MAC can be employed in massive computing architectures with improved latency and throughput while matching with the stringent requirements of the physical layer.
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。
