A Low-Complexity Full-Duplex Radio Implementation With a Single Antenna

Amjad, Muhammad Sohaib; Nawaz, Haq; Ozsoy, Kerem; Gürbüz, Özgür; Tekin, İbrahim

doi:10.1109/tvt.2017.2765823

Cited by 54 publications

(47 citation statements)

References 16 publications

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“…Therefore, we consider low transmission power and low noise levels, hence short range wireless communication scenarios. We assume that where an antenna is shared by transmit and receive RF chains, similar to the design in [10]. In IBFD radios, since perfect isolation is not realizable, there is always a leakage from TX chain into RX chain, creating SI.…”

Section: System Modelmentioning

confidence: 99%

Full Duplex-ing over Two Hops under Full Interference

Akcapinar

Gürbüz

2018

2018 Wireless Advanced (WiAd)

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In this paper, we study the optimization of transmission power in a two hop in-band full-duplex (IBFD) relaying scenario under full interference, i.e., when the source and destination nodes hear each other, which is highly likely in cellular or dense wireless networks. Considering imperfect selfinterference (SI) cancellation for IBFD operation at the relay node, we propose closed form solutions for calculating the power levels for the simultaneously transmitting nodes in an effort to achieve the maximum end-to-end throughput, and we derive an optimal power assignment policy. We compare the end-to-end throughput performance of IBFD relaying with proposed power assignment to that of traditional half-duplex (HD) relaying. Our results show the efficacy of power control for IBFD relaying, and show that the amount of performance improvement over traditional HD relaying depends on the level of SI suppression. More specifically, IBFD relaying has shown to be superior to HD relaying by up to 50% in the investigated scenarios.

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Section: System Modelmentioning

confidence: 99%

Full Duplex-ing over Two Hops under Full Interference

Akcapinar

Gürbüz

2018

2018 Wireless Advanced (WiAd)

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“…For simulation purposes, we use η s = η ri = 2.5, µ s = µ ri = 10 and σ s = σ ri = 2 (representing dense urban scenarios) [16]. For residual self-interference at each FDR, we consider σ 2 i = {σ 2 1 , . .…”

Section: System-level Performance Analysismentioning

confidence: 99%

“…Potential benefits of FD design include: a) increase in throughput, b) improvement in security and feedback, c) minimization of latency and d) elimination of hidden node and exposed node problems in contention-based networks. Despite its advantages, FD communication is plagued with residual self-interference, propagation path-loss, and cross-talk between transmitter and receiver [2].…”

Section: Introductionmentioning

confidence: 99%

Compact Full-Duplex Amplify-and-Forward Relay Design for 5G Applications

Dey

Zhao

Butt

et al. 2018

2018 IEEE 29th Annual International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

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This paper presents a compact circuit design for implementing full-duplex relays serving network architectures envisioned for 5G applications. The proposed design prevents the transmit signal from interfering with the received signal through signal inversion. Signal inversion is accomplished through a compact design based on parametric amplifier circuit which operates simultaneously in two different modes, re-transmit and demodulate. This design also has an added advantage of being capable of generating phase difference between the transmitted and received signals by controlling the local oscillator signal. The validity of the design is evaluated against an example Smart Grid architecture, where it is employed to function as amplify-and-forward fullduplex relays/repeaters for serving several communication links. Simulation results indicate that full-duplex mode outperforms half-duplex one in terms of average channel capacity as well as bit error rate irrespective of the position of the relays with respect to distance from source/destination.

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“…The isolation between transmit and receive paths for different antenna configurations is evaluated experimentally. Implementation of a low-complexity, full-duplex radio with a single antenna has been proposed in [15], where a dual-polarized antenna is designed, eliminating the need for circulator and achieving 60dB passive SI suppression. Self-interference cancellation of a full-duplex relay is studied in [16], where the relay is equipped with back-to-back transmit and receive antennas, which is capable of providing 2x2 MIMO operation.…”

Section: Introductionmentioning

confidence: 99%

Design and Implementation of an End-to-End Amplify and Forward Full-Duplex Relay Network

2020

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This paper presents the design and implementation of an In-Band Full-Duplex (IBFD) amplify and forward relay for wireless networks. First, we describe the system model of the full-duplex relay (FDR), where the relay extends the range of the source node to reach a destination node located outside the source's radio coverage. We analyze the gain limitation of FDR under the stability and transmit power constraints. Further, the operation of tandem FDRs, and their limitation factors are discussed. We analyze the overall system performance as a function of relay location for constant gain and constant transmit power operating modes. The optimal FDR gain maximizing end-to-end network performance is computed. The full-duplex (FD) and half-duplex (HD) system performances are evaluated by simulation and experiments for both outdoor and indoor environments. Experimental results show up to 23dB signal to noise plus interference ratio (SINR) improvement in constant gain mode and up to 14dB SINR improvement in constant transmit power mode. The measured network throughput of FD network shows up to 1.8 times improvement compared to the HD counterpart. Finally, the optimal relay location is selected to maximize SINR at the destination.

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A Low-Complexity Full-Duplex Radio Implementation With a Single Antenna

Cited by 54 publications

References 16 publications

Full Duplex-ing over Two Hops under Full Interference

Full Duplex-ing over Two Hops under Full Interference

Compact Full-Duplex Amplify-and-Forward Relay Design for 5G Applications

Design and Implementation of an End-to-End Amplify and Forward Full-Duplex Relay Network

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