Proceedings ArticleDOI
Full duplex radios
Dinesh Bharadia,Emily McMilin,Sachin Katti +2 more
- Vol. 43, Iss: 4, pp 375-386
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TLDR
The design and implementation of the first in-band full duplex WiFi radios that can simultaneously transmit and receive on the same channel using standard WiFi 802.11ac PHYs are presented and achieves close to the theoretical doubling of throughput in all practical deployment scenarios.Abstract:
This paper presents the design and implementation of the first in-band full duplex WiFi radios that can simultaneously transmit and receive on the same channel using standard WiFi 802.11ac PHYs and achieves close to the theoretical doubling of throughput in all practical deployment scenarios. Our design uses a single antenna for simultaneous TX/RX (i.e., the same resources as a standard half duplex system). We also propose novel analog and digital cancellation techniques that cancel the self interference to the receiver noise floor, and therefore ensure that there is no degradation to the received signal. We prototype our design by building our own analog circuit boards and integrating them with a fully WiFi-PHY compatible software radio implementation. We show experimentally that our design works robustly in noisy indoor environments, and provides close to the expected theoretical doubling of throughput in practice.read more
Citations
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Journal ArticleDOI
All-Digital Self-Interference Cancellation Technique for Full-Duplex Systems
Elsayed Ahmed,Ahmed M. Eltawil +1 more
TL;DR: In this paper, the authors proposed a digital self-interference cancellation technique for full-duplex systems, which is shown to significantly mitigate the selfinterference signal as well as the associated transmitter and receiver impairments, more specifically, transceiver nonlinearities and phase noise.
Journal ArticleDOI
All-Digital Self-interference Cancellation Technique for Full-duplex Systems
Elsayed Ahmed,Ahmed M. Eltawil +1 more
TL;DR: The overall performance is numerically investigated showing that using the proposed technique, the self-interference signal could be mitigated to ~3 dB higher than the receiver noise floor, which results in up to 76% rate improvement compared to conventional half-duplex systems at 20 dBm transmit power values.
Journal ArticleDOI
In-Band Full-Duplex Technology: Techniques and Systems Survey
TL;DR: This tutorial survey offers the most comprehensive collection to date of self-interference cancellation techniques and discusses how all of them can be implemented within the different domains of a typical transceiver.
Proceedings Article
Multi-person localization via RF body reflections
TL;DR: WiTrack2.0 is presented, a multi-person localization system that operates in multipath-rich indoor environments and pinpoints users' locations based purely on the reflections of wireless signals off their bodies.
Journal ArticleDOI
Fundamental Green Tradeoffs: Progresses, Challenges, and Impacts on 5G Networks
TL;DR: This paper provides a comprehensive overview on the extensive on-going research efforts and categorize them based on the fundamental green tradeoffs and focuses on research progresses of 4G and 5G communications, such as orthogonal frequency division multiplexing and non-orthogonal aggregation, multiple input multiple output, and heterogeneous networks.
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TL;DR: In this article, the authors present an expanded and thoroughly revised edition of Tom Lee's acclaimed guide to the design of gigahertz RF integrated circuits, which is packed with physical insights and design tips, and includes a historical overview of the field in context.