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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Proceedings ArticleDOI
An integrated CMOS passive transmitter leakage suppression technique for FDD Radios
TL;DR: In this article, an integrated passive transmitter (TX) leakage suppression technique is proposed for FDD Radios, where a four port cancellation (FPC) serves a dual function as a receiver (RX) input matching network, and provides an auxiliary path from TX to RX, used for leakage cancellation, without degrading the RX noise figure (NF).
Journal ArticleDOI
Full-Duplexing With SDR Devices: Algorithms, FPGA Implementation, and Real-Time Results
Lauri Anttila,Vesa Lampu,Seyed Ali Hassani,Pablo Pascual Campo,Dani Korpi,Matias Turunen,Sofie Pollin,Mikko Valkama +7 more
TL;DR: A novel nonlinear digital self-interference canceller algorithm based on an augmented Hammerstein model, its implementation details on a software-defined radio (SDR) platform, and performance results of real-time full-duplex experiments on both device and link level are presented.
Patent
Full Duplex Reconfigurable Antenna Self-Interference Cancellation Systems
TL;DR: In this article, a full-duplex reconfigurable antenna transceiver is described, which includes a transmit chain, a receive chain, and a reconfigurative antenna having a plurality of different modes.
Proceedings ArticleDOI
RF Self-Interference Reduction Techniques for Compact Full Duplex Radios
Bjorn Debaillie,D. J. van den Broek,C. Lavin,B. van Liempd,Eric A.M. Klumperink,C. Palacios,Jan Craninckx,Bram Nauta +7 more
TL;DR: In this paper, three RF self-interference reduction techniques for full-duplex wireless links are described. All three techniques can achieve at least 45dB of self interference reduction over more than 10MHz bandwidth.
Journal ArticleDOI
Design and Analysis of a Distributed and Demand-Based Backscatter MAC Protocol for Internet of Things Networks
Zhijie Ma,Li Feng,Fangxin Xu +2 more
TL;DR: This paper considers a large-scale IoT network consisting of the legacy Wi-Fi communication and the backscatter communication, and proposes an efficient distributed back scatter medium access control protocol that takes into account of the demand of the access point (AP).
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