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首页> 外文期刊>IEEE Transactions on Parallel and Distributed Systems >A Resilient 2-D Waveguide Communication Fabric for Hybrid Wired-Wireless NoC Design
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A Resilient 2-D Waveguide Communication Fabric for Hybrid Wired-Wireless NoC Design

机译：一种用于混合有线-无线NoC设计的弹性二维波导通信结构

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Hybrid wired-wireless Network-on-Chip (WiNoC) has emerged as an alternative solution to the poor scalability and performance issues of conventional wireline NoC design for future System-on-Chip (SoC). Existing feasible wireless solution for WiNoCs in the form of millimeter wave (mm-Wave) relies on free space signal radiation which has high power dissipation with high degradation rate in the signal strength per transmission distance. Moreover, over the lossy wireless medium, combining wireless and wireline channels drastically reduces the total reliability of the communication fabric. Surface wave has been proposed as an alternative wireless technology for low power on-chip communication. With the right design considerations, the reliability and performance benefits of the surface wave channel could be extended. In this paper, we propose a surface wave communication fabric for emerging WiNoCs that is able to match the reliability of traditional wireline NoCs. First, we propose a realistic channel model which demonstrates that existing mm-Wave WiNoCs suffers from not only free-space spreading loss (FSSL) but also molecular absorption attenuation (MAA), especially at high frequency band, which reduces the reliability of the system. Consequently, we employ a carefully designed transducer and commercially available thin metal conductor coated with a low cost dielectric material to generate surface wave signals with improved transmission gain. Our experimental results demonstrate that the proposed communication fabric can achieve a 5 dB operational bandwidth of about 60 GHz around the center frequency (60 GHz). By improving the transmission reliability of wireless layer, the proposed communication fabric can improve maximum sustainable load of NoCs by an average of 20:9 and 133:3 percent compared to existing WiNoCs and wireline NoCs, respectively.
机译：混合有线无线片上网络（WiNoC）已成为替代有线解决方案，以解决未来有线片上系统（SoC）的常规有线NoC设计的可扩展性和性能问题。用于毫米波（mm-Wave）形式的WiNoC的现有可行无线解决方案依赖于自由空间信号辐射，该辐射具有高功耗，且每传输距离的信号强度降低率很高。而且，在有损无线介质上，将无线和有线信道组合在一起会极大地降低通信结构的总体可靠性。已经提出表面波作为用于低功率片上通信的替代无线技术。通过正确的设计考虑，可以扩展表面波通道的可靠性和性能优势。在本文中，我们提出了一种用于新兴WiNoC的表面波通信结构，该结构能够匹配传统有线NoC的可靠性。首先，我们提出了一个现实的信道模型，该模型证明了现有的毫米波WiNoC不仅遭受自由空间扩展损耗（FSSL），而且还遭受分子吸收衰减（MAA）的困扰，尤其是在高频段，这降低了系统的可靠性。因此，我们采用经过精心设计的换能器和可商购的薄金属导体，这些导体涂有低成本的介电材料，以产生具有改善的传输增益的表面波信号。我们的实验结果表明，所提出的通信结构可以在中心频率（60 GHz）周围实现约60 GHz的5 dB工作带宽。通过提高无线层的传输可靠性，与现有的WiNoC和有线NoC相比，拟议的通信结构可以将NoC的最大可持续负载分别平均提高20：9和133：3％。

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