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
A Full-Duplex Receiver With True-Time-Delay Cancelers Based on Switched-Capacitor-Networks Operating Beyond the Delay–Bandwidth Limit
Aravind Nagulu,Aditya Gaonkar,Sohail Ahasan,Sasank Garikapati,Tingjun Chen,Gil Zussman,Harish Krishnaswamy +6 more
TL;DR: In this article, the authors present a technique that leverages switched-capacitor circuits with multiphase clocking to obtain large on-chip delays over wide bandwidths with low area and power consumption, thus exceeding the delay-bandwidth product (DBW) limits offered by conventional linear time-invariant (LTI) circuits.
Journal ArticleDOI
Degrees of Freedom of Full-Duplex Cellular Networks With Reconfigurable Antennas at Base Station
TL;DR: For both no CSIT and partial CSIT models, the results show that the FD BS with reconfigurable antennas can double the sum DoF even in the presence of user-to-user interference as both the numbers of DL and UL users and preset modes increase.
Journal ArticleDOI
Multipair Two-Way Full-Duplex Relaying With Massive Array and Power Allocation
TL;DR: This work considers a multipair two-way full-duplex relay network, where multiple pairs ofFullduplex users can exchange information through a common relay station with a single massive array, and derives the asymptotic transmit power of relay and the asylptotic/approximate spectral efficiency with/without power-scaling.
Journal ArticleDOI
Interference Exploitation in Full-Duplex Communications: Trading Interference Power for Both Uplink and Downlink Power Savings
TL;DR: A multi-objective optimization problem (MOOP) via the weighted Tchebycheff method to study the tradeoff between the two desirable system design objectives, at the same time ensuring the required quality-of-service (QoS) for all users is proposed.
Proceedings ArticleDOI
Full-duplex cognitive radio with packet fragmentation
Elaheh Askari,Sonia Aissa +1 more
TL;DR: A cognition scheme, whereby nodes are enabled with the full-duplex technology at the PHY layer in conjunction with packet fragmentation at the MAC layer, is proposed to increase the performance of cognitive radio networks and its overall merits are demonstrated.
References
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The Design of CMOS Radio-Frequency Integrated Circuits
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.