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
Analysis and Design of a Full-Duplex Two-Element MIMO Circulator-Receiver With High TX Power Handling Exploiting MIMO RF and Shared-Delay Baseband Self-Interference Cancellation
TL;DR: This article presents the detailed analysis, design, and implementation of RF/BB cancellers that address this challenge, as well as a bootstrapping technique to enhance the power handling of integrated circulator-receivers (circ.-RX).
Proceedings ArticleDOI
Full-duplex Bluetooth Low Energy (BLE) compatible Backscatter communication system for mobile devices
TL;DR: The first demonstration of a monostatic full-duplex backscatter system having a carrier source co-located with a commercial Bluetooth chipset and the use of specially designed BLE-Backscatter tags to send data to the commercialetooth chipset with no software modifications is presented.
Proceedings ArticleDOI
Full-duplex delay-and-forward relaying
TL;DR: This paper presents the design and implementation of DelayForward (DF), a practical system that fully extracts the relay gains of full-duplex demodulate-and-forward mechanism, and proposes a novel viterbi-type decoder to recover data from those combined signals in practice.
Proceedings ArticleDOI
Distortion-loop analysis for full-duplex amplify-and-forward relaying in cooperative multicast scenarios
TL;DR: This work studies the behavior of a full-duplex (FD) and amplify-and-forward (AF) relay where realistic limitations of FD relays in overcoming their loopback self-interference signal are taken into account.
Journal ArticleDOI
Novel Sparse-Coded Ambient Backscatter Communication for Massive IoT Connectivity
Tae Yeong Kim,Dong In Kim +1 more
TL;DR: In this article, the authors proposed a sparse coded AmBC (SC-AmBC) based on non-orthogonal signaling, which can enable NOMA and M-ary modulation for concurrent backscatter transmissions, providing additional diversity gain.
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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.