A Spatial-Domain Joint-Nulling Method of Self-Interference in Full-Duplex Relays

Chun, Byungjin; Park, Hyuncheol

doi:10.1109/lcomm.2012.020712.111733

Cited by 65 publications

(49 citation statements)

References 5 publications

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“…However, this design does not take into account the end-to-end (e2e) performance. A gradient projection method is proposed in [18], to optimize the precoding and decoding vectors considering the e2e performance. When all terminals have multiple antennas, the e2e performance is optimized in [19] where the closedform solution for precoding/decoding vectors design as well as diversity analysis are provided.…”

Section: A Literature On the Fd Relaying 1) Owrcmentioning

confidence: 99%

Joint Beamforming Optimization and Power Control for Full-Duplex MIMO Two-Way Relay Channel

Zheng

2015

IEEE Trans. Signal Process.

157

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Abstract-In this paper we explore the use of full-duplex radio to improve the spectrum efficiency in a two-way relay channel where two sources exchange information through an multi-antenna relay, and all nodes work in the full-duplex mode. The full-duplex operation can reduce the overall communication to only one phase but suffers from the self-interference. Instead of purely suppressing the self-interference, we aim to maximize the end-to-end performance by jointly optimizing the beamforming matrix at the relay which uses the amplify-and-forward protocol as well as the power control at the sources. To be specific, we propose iterative algorithms and 1-D search to solve two problems: finding the achievable rate region and maximizing the sum rate. At each iteration, either the analytical solution or convex formulation is obtained. We compare the proposed fullduplex two-way relaying with the conventional half-duplex twoway relaying, a full-duplex one-way relaying and a performance upper bound. Numerical results show that the proposed fullduplex scheme significantly improves the achievable data rates over the conventional scheme.

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Section: A Literature On the Fd Relaying 1) Owrcmentioning

confidence: 99%

Joint Beamforming Optimization and Power Control for Full-Duplex MIMO Two-Way Relay Channel

Zheng

2015

IEEE Trans. Signal Process.

157

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“…The estimation error is defined as δ ≜ ĥ LI − h LI , where δ is modeled as a complex random variable that varies from each code block to another, but remains unchanged in the same code block. Many efforts have been exerted at improving the selfinterference cancellation [8][9][10][11][12][13]. For a typical radio transmission, the SNR is approximately 30 dB.…”

Section: Residual Self-interferencementioning

confidence: 99%

“…In such case, nearly 100 dB cancellation of self-interference is required to ensure the 30 dB gap in the signal and interference plus noise. Currently, many schemes [8][9][10][11][12][13] that use analog cancellation, digital cancellation, antenna separation, or some combination of the above are able to cancel the self-interference around 74 dB [9,13], such that the power of RSI can be as low as − 10dB compared with the signal of interest.…”

Section: Residual Self-interferencementioning

confidence: 99%

“…Worse still, self-interference may be much stronger than the signal of interest. Many efforts have been exerted at cancelling the self-interference [8][9][10][11][12], and current self-interference cancellation can be achieved in the range between 66 and 74 dB [13]. However, as discussed in [13], given the large residual selfinterference (RSI), the 66 dB cancellation is insufficient for full-duplex relay systems to outperform half-duplex relay systems in terms of data rate.…”

Section: Introductionmentioning

confidence: 99%

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Transmission Code Design for Asynchronous Full-Duplex Relaying

Cai¹,

Liu²,

Ching³

2017

IJECS

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“…Each source node processes and cancels the selfinterface term from the received signal (Chun and Park, 2012). Therefore, the resulting signals at BS and UE q can be rewritten as Equation (16):…”

Section: Jcsmentioning

confidence: 99%

Reducing Transmitted Power of Moving Relay Node in Long-Term Evolution-Advanced Cellular Networks

Aldhaibani

Yahya²,

Ahmad

et al. 2014

Journal of Computer Science

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Wireless multi-hop relay networks have become very significant technologies in mobile communications. These networks ensure data rate transfer and coverage extension with a low cost. In this study two types of relay are studied; Fixed Relay Node (FRN) and Moving Relay Node (MRN). Where system analyses for uplink and downlink transmission are derived in this study. Moreover the optimal relay location of FRN was proposed to provide a maximum achievable rate at user in cell edge region. Finally, a new algorithm was suggested to balance and control on the transmitted power of MRN over cell size to provide the required SNR and throughput at the users inside vehicle with reducing the consumption transmitted relay power. Numerical results indicate an enhancement in received signal strength for users at the cell edge from (-90 to -65) dBm and 40% increment from all cell size after deploying FRN at proposed locations. As well as, the results revealed that there is saving nearly 75% from transmitted power in MRN after using proposed algorithm. ATDI simulator was used to verify the numerical results, which deals with real digital cartographic and standard formats for terrain.

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A Spatial-Domain Joint-Nulling Method of Self-Interference in Full-Duplex Relays

Cited by 65 publications

References 5 publications

Joint Beamforming Optimization and Power Control for Full-Duplex MIMO Two-Way Relay Channel

Joint Beamforming Optimization and Power Control for Full-Duplex MIMO Two-Way Relay Channel

Transmission Code Design for Asynchronous Full-Duplex Relaying

Reducing Transmitted Power of Moving Relay Node in Long-Term Evolution-Advanced Cellular Networks

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