NeTS: Medium: Scaling WLAN Throughput and Range with Wide Aperture and 100x Spectrum Diversity

NeTS：中：通过大孔径和 100 倍频谱分集扩展 WLAN 吞吐量和范围

• 批准号: 1514285
• 负责人: Edward Knightly
• 金额: $ 80万
• 依托单位: William Marsh Rice University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2015
• 资助国家: 美国
• 起止时间: 2015-09-01 至 2019-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1514285&HistoricalAwards=false
• 关键词: NeTS; Medium; Scaling; WLAN; Throughput

The driving vision of this project is to develop the foundations to scale line-of-sight (LOS) Wireless Local Area Networks (WLANs) to Terabit/second (Tbps) throughput and to exploit Tbps LOS interconnections to form distributed arrays in lower frequency bands. Namely, this project first targets to scale millimeter-wave networks with wide aperture LOS spatial multiplexing, thereby overcoming a fundamental limit of the lack of rich multi-path channels at high frequency. The second target is to overcome the inability of high frequencies to penetrate objects and the inability of lower frequency devices to have large arrays on a single client due to physical device constraints. Surmounting these obstacles enables formation of all-wireless distributed arrays with unprecedented properties. The proposed research agenda will enable new dimensions for scaling WLAN throughput and range.This project targets to impact spectrum policy via demonstration of novel usage cases of emerging and diverse spectral bands. This project will show how a design based on wide aperture enables high frequency bands to scale to achieve previously impossible capacity gains. This project will impact standards bodies as it will show how enhancements to existing standards and fusion of diverse bands can yield vast performance gains. This project will impact industry through demonstration of results coupled with the investigators' extensive collaborative industry network. Finally, the project includes an inter-disciplinary education plan and the team includes multiple Ph.D. students from under-represented groups. This project will provide two integrated fundamental advances towards realizing a vision of scaling WLAN throughput and range. The first project thrust is development and fabrication of a wide aperture millimeter wave interconnect with pico-second scale synchronization. The key technique is combining widely-spaced radiating elements into a synchronized and coherent line-of-sight spatially multiplexed transmission. Second, the project exploits the diverse properties of spectrum spanning two orders of magnitude (100 times or 100x). By coupling the aforementioned millimeter wave interconnect (operating at 30 GHz to 300 GHz) with legacy bands (500 MHz to 5 GHz), the 100x architecture will enable long-range spatially multiplexed object-penetrating links. The design will enable a device with a single legacy-band antenna to spoof legacy-band MIMO infrastructure into performing full-rank transmission and reception. A key project outcome will be experimental proof-of-concept demonstrations of all scaling principles and the first experimental realization of distributed legacy-band spatial multiplexing for single legacy-band antenna devices, a mode enabled by tightly synchronized distributed antennas with 100x spectrum diversity.Gigabit-per-second scale wireless transmission is now feasible: Driven by the wide spectrum availability at 60 GHz, multi-Gb/sec systems are already standardized in protocols such as IEEE 802.11ad and wireless HDMI and are available in commercial products and chipsets, including tri-band chips that support 60 GHz as well as legacy bands at 2.4 and 5 GHz. Moreover, the broad range of millimeter wave spectrum (30 GHz to 300 GHz) is considered a leading candidate by industry, regulators and the research community for the next generation of wireless systems. The project's objective is to realize the next order of magnitude in rate, directionality, and range, targeting both direct line-of-sight (LOS) paths and non-line-of-sight (NLOS) paths that must penetrate objects. The project's goal is to both explore the underlying foundations and to design and implement proof-of-concept systems to (i) realize a WLAN architecture that scales to Tbps via networked mm-wave antennas that form a large effective aperture and (ii) fuse diverse spectral bands spanning two orders of magnitude in order to scale client array size, and subsequently capacity, beyond the physical constraints of the device.

该项目的驱动愿景是开发将视线（LOS）无线局域网（WLAN）扩展到太比特/秒（Tbps）吞吐量的基础，并利用Tbps LOS互连在较低频段形成分布式阵列。也就是说，该项目的第一个目标是扩展具有宽孔径LOS空间复用的毫米波网络，从而克服在高频处缺乏丰富的多径信道的基本限制。第二个目标是克服高频无法穿透物体以及低频设备由于物理设备限制而无法在单个客户端上具有大阵列的问题。克服这些障碍，使形成具有前所未有的性能的全无线分布式阵列。 拟议的研究议程将为扩大WLAN吞吐量和范围提供新的维度。该项目旨在通过展示新兴和多样化频谱的新使用案例来影响频谱政策。该项目将展示基于宽孔径的设计如何使高频带扩展，以实现以前不可能的容量增益。该项目将影响标准机构，因为它将展示如何增强现有标准和融合不同的频段可以产生巨大的性能收益。该项目将通过展示结果以及研究人员广泛的合作行业网络来影响行业。最后，该项目包括一个跨学科的教育计划，团队包括多个博士。来自弱势群体的学生。该项目将提供两个集成的基本进展，以实现扩展WLAN吞吐量和范围的愿景。第一个项目的重点是开发和制造宽口径毫米波互连与皮秒尺度同步。其关键技术是将宽间隔的辐射单元组合成同步和相干的视线空间复用传输。其次，该项目利用了跨越两个数量级（100倍或100倍）的频谱的不同特性。通过将上述毫米波互连（工作在30 GHz至300 GHz）与传统频段（500 MHz至5 GHz）耦合，100 x架构将实现长距离空间复用物体穿透链路。该设计将使具有单个传统频段天线的设备能够欺骗传统频段MIMO基础设施，以执行全秩传输和接收。一个关键的项目成果将是所有缩放原理的实验性概念验证演示，以及单个传统频段天线设备的分布式传统频段空间复用的首次实验性实现，这是一种通过具有100倍频谱分集的紧密同步分布式天线实现的模式。在60 GHz的宽频谱可用性的推动下，多Gb/秒系统已经在IEEE 802.11ad和无线HDMI等协议中标准化，并可用于商业产品和芯片组，包括支持60 GHz以及2.4和5 GHz传统频段的三频芯片。此外，宽范围的毫米波频谱（30 GHz至300 GHz）被工业界、监管机构和研究界认为是下一代无线系统的主要候选者。该项目的目标是实现下一个数量级的速率，方向性和范围，针对直接视线（LOS）路径和必须穿透物体的非视线（NLOS）路径。该项目的目标是探索潜在的基础，并设计和实施概念验证系统，以（i）实现WLAN架构，通过形成大有效孔径的联网毫米波天线扩展到Tbps，以及（ii）融合跨越两个数量级的不同频谱带，以扩展客户端阵列大小，并随后扩展容量，超越设备的物理限制。

项目成果

Wireless Time Transfer With Subpicosecond Accuracy Based on a Fully Integrated Injection-Locked Picosecond Pulse Detector

基于完全集成注入锁定皮秒脉冲检测器的亚皮秒精度无线时间传输

• DOI: 10.1109/tmtt.2019.2934452
• 发表时间: 2020
• 期刊: IEEE Transactions on Microwave Theory and Techniques
• 影响因子: 4.3
• 作者: Jamali, Babak;Babakhani, Aydin
• 通讯作者: Babakhani, Aydin

LiSteer: mmWave Beam Acquisition and Steering by Tracking Indicator LEDs on Wireless APs

• DOI: 10.1145/3241539.3241542
• 发表时间: 2018-10
• 期刊: Proceedings of the 24th Annual International Conference on Mobile Computing and Networking
• 作者: Muhammad Kumail Haider;Yasaman Ghasempour;Dimitrios Koutsonikolas;E. Knightly

THz Micro-Doppler Measurements Based On A Silicon-Based Picosecond Pulse Radiator

• DOI: 10.1109/mwsym.2019.8700953
• 发表时间: 2019-06
• 期刊: 2019 IEEE MTT-S International Microwave Symposium (IMS)
• 作者: Sam Razavian;M. Assefzadeh;M. Hosseini;A. Babakhani