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
Beamforming Optimization for Full-Duplex Wireless-Powered MIMO Systems
TL;DR: In this article, the authors proposed techniques for optimizing transmit beamforming in a full-duplex multiple-input-multiple-output (MIMO) wireless-powered communication system, which consists of two phases.
Proceedings ArticleDOI
The Tick Programmable Low-Latency SDR System
Haoyang Wu,Tao Wang,Zengwen Yuan,Chunyi Peng,Zhiwei Li,Zhaowei Tan,Boyan Ding,Xiaoguang Li,Yuanjie Li,Jun Liu,Songwu Lu +10 more
TL;DR: Tick is a new SDR system that provides programmability and ensures low latency at both PHY and MAC and has been implemented and validated its effectiveness through extensive evaluations as well as two prototypes of 802.11ac SISO/MIMO and802.11a/g full-duplex.
Journal ArticleDOI
Hidden-Node Problem in Full-Duplex Enabled CSMA Networks
Shengbo Liu,Liqun Fu,Wei Xie +2 more
TL;DR: This paper provides a comprehensive investigation on the hidden-node problem that arises in the full-duplex (FD) enabled carrier-sensing multiple-access (CSMA) networks, and proposes a new medium access control (MAC) protocol with Full-duple Enhanced Carrier-Sensing (FECS) mechanism.
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Nonreciprocal Electronic Devices: A Hypothesis Turned Into Reality
TL;DR: The earliest references to reciprocity as an underlying symmetry within a system dates back to the 1828 work of Green in electrostatics, relating the interchanging electric potential and charge density as mentioned in this paper.
Proceedings ArticleDOI
WiWear: Wearable Sensing via Directional WiFi Energy Harvesting
TL;DR: This paper develops the nascent idea of harvesting RF energy from WiFi transmissions, applying it to power a prototype wearable device that captures and transmits accelerometer sensor data, and provides experimental validation to show the viability of a custom-built WiWear-based wearable device, at least in office environments.
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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.