22.1 THz Prism: One-Shot Simultaneous Multi-Node Angular Localization Using Spectrum-to-Space Mapping with 360-to-400GHz Broadband Transceiver and Dual-Port Integrated Leaky-Wave Antennas
22.1 THz Prism: One-Shot Simultaneous Multi-Node Angular Localization Using Spectrum-to-Space Mapping with 360-to-400GHz Broadband Transceiver and Dual-Port Integrated Leaky-Wave Antennas
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22.1 THz 棱镜：使用频谱到空间映射以及 360 至 400GHz 宽带收发器和双端口集成漏波天线的一次性同步多节点角度定位
DOI：
10.1109/isscc42613.2021.9366041
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发表时间：
2021
期刊：
影响因子：
--
通讯作者：
K. Sengupta
中科院分区：
文献类型：
--
作者：
H. Saeidi;S. Venkatesh;Xuyang Lu;K. Sengupta
100 GHz以上的频谱有望催生新一代超高速无线链路以及智能传感和成像应用。它们旨在通过5G及更高级别的异类和可动态重新配置的无线网络交换矩阵提供支持。这样的无线通信和传感应用需要移动节点的快速定位和方向确定[1]。此功能对于移动通信应用、无线链路发现以及毫米波和太赫兹频率的快速波束对准/跟踪非常重要[2]-[9]。目前用于5G毫米波系统的测向和波束对准协议基于迭代算法，这些算法通常不可扩展、耗时且计算成本高昂，给低延迟应用带来了严峻的挑战。因此，需要在“边缘节点”处理这种测向方法，以实现具有非常低延迟的安全可扩展网络[10]。在本文中，我们提出了一种频谱到空间的映射原理，其中定位信息可以通过频谱感知在边缘传感器节点进行处理。概念概念如图22.1.1所示，它显示了一个接入点(发送器/接收器)，它充当太赫兹棱镜，将宽带太赫兹信号的不同光谱部分投射到太空中。如果映射是唯一的，多个边缘节点可以通过局部频谱感知以单次方式同时定位自己，避免了缓慢的迭代过程和双向通信。在这篇文章中，我们提出了一种可扩展的360-400 GHz的收发信机结构，采用65 nm的CMOS，并使用两个双端口集成频散漏波天线进行频率相关的波束合成。当两个天线在两个相对的端口处被激励/感应时，覆盖一个一维空间角度，横跨\pm 40^{\cic}$，并使用两个这样的IC实现2D定位，覆盖具有频偏辐射的两个正交基向量(图22.1.1)。利用频谱到空间映射的互相关(图22.1.1)，该系统在测量分辨率带宽(RBW)为20赫兹时，二维定位精度为$\sigma_{\varphi}，=1.9$°和$\sigma_{theta}=1.95^{\cic}$。
The spectrum above 100GHz is expected to spawn a generation of ultra-high-speed wireless links and intelligent sensing and imaging applications. They are meant to be supported through a heterogeneous and dynamically reconfigurable wireless network fabric in 5G and beyond. Such wireless communication and sensing applications require rapid localization and direction finding of mobile nodes [1]. This functionality is paramount for communications-on-the-move applications, wireless link discovery, and rapid beam alignment/tracking at mm-wave and THz frequencies [2]–[9]. The current protocols for direction finding and beam alignment in 5G mm-wave systems are based on iterative algorithms that are often non-scalable, time-consuming, and computationally expensive, posing serious challenges for low-latency applications. Thus there is a need to process such direction-finding methods at the ‘edge nodes’, to enable secure scalable networks with very low latencies [10]. In this article, we present a spectrum-to-space mapping principle, where localization information can be processed at the edge ‘sensor node’ through the spectrum sensing. The conceptual idea is presented in Fig. 22.1.1, which shows an access point (transmitter/receiver) that acts as a THz prism casting different spectral portions of a broadband THz signal across space. If the mapping is unique, multiple edge nodes can simultaneously localize themselves in a single-shot fashion through localized spectrum sensing, avoiding the use of the slow iterative process and bi-directional communication. In this paper, we present a scalable 360-to-400GHz transceiver architecture in 65nm CMOS with frequency-dependent beam synthesis using two dual-port integrated frequency-dispersive leaky-wave antennas. The two antennas when excited/sensed across the two opposite end-ports, cover a 1D spatial angle $across \pm 40^{\circ}$, and enable 2D localization with two such ICs covering both orthogonal basis vectors with a frequency-offset radiation (Fig. 22.1.1). Exploiting the cross-correlation of the spectrum-to-space mapping (Fig. 22.1.1), the system achieves 2D localization accuracy of $\sigma_{\varphi},= 1.9$ ° and $\sigma_{theta}= 1.95^{\circ}$ for a measurement resolution bandwidth (RBW) of 20Hz.
DOI：
10.1145/3230543.3230581
发表时间：
2018-08
期刊：
Proceedings of the 2018 Conference of the ACM Special Interest Group on Data Communication
影响因子：
--
作者：
Haitham Hassanieh;Omid Salehi-Abari;Michael Rodriguez;M. Abdelghany;D. Katabi;P. Indyk
通讯作者：
Haitham Hassanieh;Omid Salehi-Abari;Michael Rodriguez;M. Abdelghany;D. Katabi;P. Indyk
太赫兹无线网络的单次链路发现
影响因子：
16.6
作者：
Ghasempour, Yasaman;Shrestha, Rabi;Charous, Aaron;Knightly, Edward;Mittleman, Daniel M.
通讯作者：
Mittleman, Daniel M.