无线网络中计算包的空间复用
Towards Spatial Multiplexing in Wireless Networks within Computing Packages
摘要：
无线片上网络（WNoC）被认为是芯片级的传统互连网络的破坏性替代方案，但受限于这种无线网络的相对低的聚合带宽。因此，在这种情况下，任何增加并发信道数量的方法都具有很高的价值。在这个方向上，由于WNoC意味着芯片上的多个天线的紧密集成，在本文中，我们提出了一个在毫米波和亚太赫兹频率的倒装芯片环境中的紧凑型微带天线阵列的可行性研究。通过一个全波求解器，我们评估的可行性，创造，在意志，集中的领域在不同的点的芯片。通过这种方式，我们设置了实现并发多播通信的空间复用的步骤，并且还增加了无线网络的聚合带宽。我们在60 GHz的结果显示，两个明显可分离的并行信道同时从芯片的两个对角辐射，实现了约40 dB的信号干扰比（SIR），这证明了即使在这样的封闭环境中，信道也是相互独立的。此外，我们认为有可能将我们的方法扩展到三个或更多个并发信道，以及超过100 GHz的频率。
英文摘要：
Wireless Networks-on-Chip (WNoCs) are regarded as a disruptive alternative to conventional interconnection networks at the chip scale, yet limited by the relatively low aggregate bandwidth of such wireless networks. Hence, any method to increase the amount of concurrent channels in this scenario is of high value. In this direction, and since WNoC implies close integration of multiple antennas on a chip anyway, in this paper we present a feasibility study of compact monopole antenna arrays in a flip-chip environment at millimeter-wave and sub-terahertz frequencies. By means of a full-wave solver, we evaluate the feasibility to create, at will, concentrations of field in different spots of the chip. This way, we set the steps towards spatial multiplexing that enables concurrent multicast communications and also increases the aggregate bandwidth of the wireless network. Our results at 60 GHz show two clearly separable parallel channels that radiate simultaneously from two opposite corners of the chip, achieving a Signal-to-Interference Ratio (SIR) of around 40 dB, which proves that the channels are independent of each other even in such an enclosed environment. Further, we see potential to expand our approach to three or more concurrent channels, and to frequencies beyond 100 GHz.
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