Proceedings ArticleDOI
X60: A Programmable Testbed for Wideband 60 GHz WLANs with Phased Arrays
Swetank Kumar Saha,Yasaman Ghasempour,Muhammad Kumail Haider,Tariq Siddiqui,Paulo De Melo,Neerad Somanchi,Luke Zakrajsek,Arjun Singh,Owen Torres,Daniel Uvaydov,Josep Miquel Jornet,Edward W. Knightly,Dimitrios Koutsonikolas,Dimitris A. Pados,Zhi Sun +14 more
- pp 75-82
TLDR
This paper introduces X60, the first SDR-based testbed for 60 GHz WLANs, featuring fully programmable MAC/PHY/Network layers, multi-Gbps rates, and a user-configurable 12-element phased antenna array, and conducts an extensive measurement study, looking at different aspects of indoor 60 GHz links.Abstract:
This paper introduces X60, the first SDR-based testbed for 60 GHz WLANs, featuring fully programmable MAC/PHY/Network layers, multi-Gbps rates, and a user-configurable 12-element phased antenna array. Combined these features provide an unprecedented opportunity to re-examine the most important aspects of signal propagation and performance expected from practical 60 GHz systems. Leveraging the testbed's capabilities, we conduct an extensive measurement study, looking at different aspects of indoor 60 GHz links. We find that the presence of reflective surfaces and imperfect beams generated by practical phased arrays together can result in multiple NLoS paths supporting Gbps rates. Additionally, our comparison of different beam adaptation strategies reveals how beam steering even at one end of the link can often be sufficient to restore link quality.read more
Citations
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Journal ArticleDOI
Smart Radio Environments Empowered by Reconfigurable Intelligent Surfaces: How It Works, State of Research, and The Road Ahead
Marco Di Renzo,Alessio Zappone,Merouane Debbah,Mohamed-Slim Alouini,Chau Yuen,Julien de Rosny,Sergei A. Tretyakov +6 more
TL;DR: Reconfigurable intelligent surfaces (RISs) can be realized in different ways, which include (i) large arrays of inexpensive antennas that are usually spaced half of the wavelength apart; and (ii) metamaterial-based planar or conformal large surfaces whose scattering elements have sizes and inter-distances much smaller than the wavelength.
Proceedings ArticleDOI
Towards Environment Independent Device Free Human Activity Recognition
Wenjun Jiang,Chenglin Miao,Fenglong Ma,Shuochao Yao,Yaqing Wang,Ye Yuan,Hongfei Xue,Chen Song,Xin Ma,Dimitrios Koutsonikolas,Wenyao Xu,Lu Su +11 more
TL;DR: EI, a deep-learning based device free activity recognition framework that can remove the environment and subject specific information contained in the activity data and extract environment/subject-independent features shared by the data collected on different subjects under different environments is proposed.
Journal ArticleDOI
Empirical Effects of Dynamic Human-Body Blockage in 60 GHz Communications
TL;DR: This work presents a novel spatial dynamic channel sounding system based on phased array transmitters and receivers operating at 60 GHz that can measure multiple directions rapidly at high speed to provide detailed spatial dynamic measurements of complex scenarios.
Proceedings ArticleDOI
M-Cube: a millimeter-wave massive MIMO software radio
TL;DR: M3 (M-Cube), the first mmWave massive MIMO software radio, to hijack a low-cost commodity 802.11ad radio, separate the control path and data path inside, regenerate the phased array control signals, and recreate the data signals using a programmable baseband.
Proceedings ArticleDOI
LiSteer: mmWave Beam Acquisition and Steering by Tracking Indicator LEDs on Wireless APs
TL;DR: LiSteer, a novel system that steers mmWave beams at mobile devices by repurposing indicator LEDs on wireless Access Points to passively acquire direction estimates using off-the-shelf light sensors, maintains beam alignment at the narrowest beamwidth level even in case of device mobility.
References
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