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
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Proceedings ArticleDOI
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Proceedings ArticleDOI
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Proceedings ArticleDOI
Full-duplex wireless based on a small-form-factor analog self-interference canceller: demo
Tingjun Chen,Jin Zhou,Nicole Grimwood,Rel Fogel,Jelena Marasevic,Harish Krishnaswamy,Gil Zussman +6 more
TL;DR: The practicality and robustness of the full-duplex wireless link through the National Instruments LabVIEW interface is demonstrated, and an adaptive analog self-interference canceller tuning mechanism adjusts to environmental changes.
Journal ArticleDOI
Three-Way Channels With Multiple Unicast Sessions: Capacity Approximation via Network Transformation
TL;DR: The main goal of this paper is to characterize the capacity region of the underlying Gaussian three-way channel (3WC) within a constant gap, to which a capacity outer bound is derived using cut-set bounds and genie-aided bounds.
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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.