Transceiver Design for MIMO Full-Duplex Two-Way Relay Network

Ayir, Nachiket; Ubaidulla, P.

doi:10.1109/lwc.2018.2822816

Cited by 8 publications

(8 citation statements)

References 6 publications

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“…With the increase in SNR, the performance of the FD without interference cancellation remains flat because it is limited by the RSI, IRI, and RDI. The proposed scheme has well dealt with IRI, RSI, and RDI and the channel is tending to be well conditioned, due to joint PA [ 8 , 18 , 40 , 41 ]. Moreover, a higher multiplexing gain (evident from the steep slope) is achieved by FD relaying, as compared to HD relaying.…”

Section: Numerical Resultsmentioning

confidence: 99%

Half-duplex and full-duplex interference mitigation in relays assisted heterogeneous network

Fadoul

Chow

2023

PLoS ONE

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In a multicell environment, the half-duplex (HD) relaying is prone to inter-relay interference (IRI) and the full-duplex (FD) relaying is prone to relay residual-interference (RSI) and relay-to-destination interference (RDI) due to Next Generation Node B (gNB) traffic adaptation to different backhaul subframe configurations. IRI and RDI occur in the downlink when a relay is transmitting on its access link and interfering with the reception of a backhaul link of another victim relay. While the simultaneous transmission and reception of the FD relay creates the RSI. IRI, RDI, and RSI have detrimental effects on the system performance, leading to lower ergodic capacity and higher outage probability. Some previous contributions only briefly analysed the IRI, RSI, and RDI in a single cell scenario and some assumed that the backhaul and access subframes among the adjacent cells are perfectly aligned for different relays without counting for IRI, RSI and RDI. However, in practise the subframes are not perfectly aligned. In this paper, we eliminate the IRI, RSI, and RDI by using the hybrid zeroforcing and singular value decomposition (ZF-SVD) beamforming technique based on nullspace projection. Furthermore, joint power allocation (joint PA) for the relays and destinations is performed to optimize the capacity. The ergodic capacity and outage probability comparisons of the proposed scheme with comparable baseline schemes corroborate the effectiveness of the proposed scheme.

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Section: Numerical Resultsmentioning

confidence: 99%

Half-duplex and full-duplex interference mitigation in relays assisted heterogeneous network

Fadoul

Chow

2023

PLoS ONE

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“…Te use of unmanned aerial vehicles (UAVs) as relays (UAV-aided) for information transmission in the two-way system has gradually come into our feld of vision, for their ability to improve spectral efciency and reduce end-to-end delay and cost [2,3]. Te reliability of signal detection in the two-way UAV-aided system strongly depends on the accuracy of the channel state information (CSI) for all the links involved in the communication process [4].…”

Section: Introductionmentioning

confidence: 99%

A Semiblind Receiver for a Two-Way UAV-Aided PIC System Based on the PARAFAC Model

Han

Liu

et al. 2022

International Journal of Antennas and Propagation

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In this paper, we consider a two-way communication system using the unmanned aerial vehicle (UAV) as a relay (UAV-aided). This system eliminates impulse interference through an adaptive filter based on the least mean square (LMS) and uses the received signal transmitted by the UAVs to construct a parallel factor (PARAFAC) model. Based on the identifiability condition of the PARAFAC model, a pulse interference cancellation orthogonal pilot tensor (PIC-OPT) receiver without iteration is proposed. Our algorithm is also used in millimeter-wave to achieve the acquisition of channel information. Compared with the least squares method, the simulation results demonstrate the superiority of the proposed semiblind receiver in terms of the relative mean square error and bit error rate.

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“…The FD scheme can achieve almost double the throughput with high signalto-self-interference plus noise ratios and large packet sizes, which means that strong SI cancellation is necessary for FD systems. In [6], [7], the SI suppression of the FD TWR system is considered. The relay and receiving beamforming is jointly designed to minimize the mean square error (MSE) and SI cancellation in [6].…”

Section: Introductionmentioning

confidence: 99%

“…The relay and receiving beamforming is jointly designed to minimize the mean square error (MSE) and SI cancellation in [6]. For imperfect channel state information (CSI), a transceiver design is proposed in [7]. Instead of eliminating the SI completely, the end-to-end performance is maximized by jointly optimizing the beamforming matrix at the relay and the sources [8].…”

Section: Introductionmentioning

confidence: 99%