基于石墨烯的无线片上网络THz波段纳米通信研究
On the Nanocommunications at THz Band in Graphene-Enabled Wireless Network-on-Chip
摘要：
对于具有可扩展带宽需求的不断增长的计算密集型应用的主要挑战之一是在芯片封装内部署密集数量的片上核。为此，本文研究了太赫兹频段的石墨烯基纳米天线（GNAs）实现的无线片上网络（WiNoC）。我们首先开发一个GNA之间的信道模型，考虑到传播介质的实际问题，如传输频率，工作温度，环境压力和GNA之间的距离。在太赫兹波段，不仅介电传播损耗，而且由芯片封装内的各种分子及其同位素体引起的分子吸收衰减（MAA）也构成了信号传输损耗。我们进一步提出了一个最佳的功率分配，以实现信道容量。所提出的信道模型表明，MAA显着降低性能在某些频率范围内相比，传统的信道模型，即使当GNA非常接近的位置。更具体地说，在1太赫兹的传输频率，所提出的模型的信道容量被证明是远远低于传统的模型在整个范围内的温度和环境压力的高达26.8%和25%，分别。
英文摘要：
One of the main challenges towards the growing computation-intensive applications with scalable bandwidth requirement is the deployment of a dense number of on-chip cores within a chip package. To this end, this paper investigates the Wireless Network- on-Chip (WiNoC), which is enabled by graphene-based nanoantennas (GNAs) in Terahertz frequency band. We first develop a channel model between the GNAs taking into account the practical issues of the propagation medium, such as transmission frequency, operating temperature, ambient pressure, and distance between the GNAs. In the Terahertz band, not only dielectric propagation loss but also molecular absorption attenuation (MAA) caused by various molecules and their isotopologues within the chip package constitutes the signal transmission loss. We further propose an optimal power allocation to achieve the channel capacity. The proposed channel model shows that the MAA significantly degrades the performance at certain frequency ranges compared to the conventional channel model, even when the GNAs are very closely located. More specifically, at transmission frequency of 1 THz, the channel capacity of the proposed model is shown to be much lower than that of the conventional model over the whole range of temperature and ambient pressure of up to 26.8% and 25%, respectively.
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