Adaptive Relay Selection and Data Transmission Scheme for Cooperative Communication

Ahn, Yeong-Seop; Choi, Sung-Bok; Jeon, Jinwoo; Song, Hyoung‐Kyu

doi:10.1007/s11277-016-3459-6

Cited by 7 publications

(2 citation statements)

References 11 publications

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“…Contrary to the aforementioned works on relay-assisted hybrid beamforming for different communication networks (e.g., [ 34 , 35 , 36 , 37 , 38 ]), this paper proposes a beamforming and relay selection simultaneously. Relay selection in a multi-hop transmission system is an essential design aspect to avoid performance degradation due to error propagation [ 40 , 41 ]. Therefore, the primary focus of present research work is to design a hybrid beamforming solution for a fully-connected multi-relay mm-Wave MIMO network with a relay selection that may enable to maximize the achievable rate.…”

Section: Introductionmentioning

confidence: 99%

Hybrid Beamforming and Relay Selection for End-to-End SNR Maximization in Single-User Multi-Relay MIMO Systems

Mustafa

Baik

You

et al. 2023

Sensors

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This paper proposes a novel hybrid beamforming and relay selection scheme for spectral efficiency maximization in a non-regenerative multi-relay multi-input multi-output (MIMO) system. The analog beamforming component in the radio-frequency (RF) domain must follow an element-wise constant modulus constraint, which makes the underlying design problem mathematically intractable and therefore, it is quite challenging to obtain the global optimal solution. To address this problem, phase-only precoding/combining matrices are derived by maximizing the end-to-end received signal-to-noise ratio (SNR) under transmit power constraint at the source and each relay node. This task is achieved by decomposing the original complicated optimization problem into two independent components. The first component designs the RF precoder/combiner at source and relay nodes by maximizing the received SNR at relay nodes. While the second component attempts to derive the analog precoder/combiner at relay nodes and destination by maximizing the received SNR at the destination. Digital baseband processing matrices are obtained by deriving the closed-form expression, which minimizes interference among different sub-channels. Finally, the relay selection is made by maximizing the overall SNR from the source to the destination. Computer simulations reveal that the performance of the proposed algorithm is close to its fully digital counterpart and approximately 6% higher than the specified relay-assisted hybrid beamforming techniques. Moreover, the proposed method achieves more than 15% higher performance in a sparse scattering environment when compared with the given relay selection techniques.

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Section: Introductionmentioning

confidence: 99%

Hybrid Beamforming and Relay Selection for End-to-End SNR Maximization in Single-User Multi-Relay MIMO Systems

Mustafa

Baik

You

et al. 2023

Sensors

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“…If an appropriate relay is not selected, the SNR of the received signal is reduced due to the effect of the error propagation problem. Therefore, the relay selection scheme is very important in a multi-hop transmission system using a relay [14,15]. There are many difficult relay selection schemes.…”

Section: Introductionmentioning

confidence: 99%

Relay Selection Scheme for Multi-Hop Transmission of MU-MIMO System

2018

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Recently, wireless communication systems use a multi-hop transmission scheme using a relay to expand the cell coverage of the system. The multi-hop transmission scheme can expand the cell coverage of wireless communication systems. However, if an appropriate relay is not selected, errors generated during signal processing in the relay are transmitted to the receiver. Therefore, a relay selection scheme is essential for reliable multi-hop transmission. This paper proposes a relay selection scheme for reliable multi-hop transmission in a multi user-multiple input multiple output (MU-MIMO) system. The proposed relay selection scheme uses a MIMO channel matrix between the transmitter and relays to select an appropriate relay. The proposed relay selection scheme obtains the singular values of the MIMO channel matrix using the singular value decomposition (SVD). Then, the sum of the singular values is calculated, and the relay having the largest value is selected. Therefore, in the proposed relay selection scheme, although the transmitter only knows the channel information between the transmitter and relays, the transmitter can select an appropriate relay for reliable multi-hop transmission.

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Multi-objective-Based Lion Optimization Algorithm for Relay Selection in Wireless Cooperative Communication Networks

Ranjan

Singh

Mishra

et al. 2020

Smart Innovations in Communication and Computational Sciences

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Adaptive Relay Selection and Data Transmission Scheme for Cooperative Communication

Cited by 7 publications

References 11 publications

Hybrid Beamforming and Relay Selection for End-to-End SNR Maximization in Single-User Multi-Relay MIMO Systems

Hybrid Beamforming and Relay Selection for End-to-End SNR Maximization in Single-User Multi-Relay MIMO Systems

Relay Selection Scheme for Multi-Hop Transmission of MU-MIMO System

Multi-objective-Based Lion Optimization Algorithm for Relay Selection in Wireless Cooperative Communication Networks

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