Outage-Based Resource Allocation for DF Two-Way Relay Networks with Energy Harvesting

Peng, Chunling; Li, Fangwei; Liu, Huaping; Wang, Guozhong

doi:10.3390/s18113946

Cited by 3 publications

(3 citation statements)

References 15 publications

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“…Over the past few decades, the two-way relay network (TWRN) [1][2][3][4][5][6][7][8][9][10][11][12][13] has aroused great interest due to the overwhelming development of wireless cellular systems, especially when one-way relaying is of low spectral efficiency because of the half-duplex constraint. In a TWRN system, two source nodes exchange information through a relay node.…”

Section: Introductionmentioning

confidence: 99%

“…In the three-stage scheme, source nodes send their corresponding messages to the relay in the first two stages, respectively. In the third stage, the relay processes received signals with either a decode-and-forward (DF) approach [1][2][3][4][5][6] or an amplify-and-forward approach [7][8][9][10][11][12][13], and then broadcasts back to the source nodes. In [14], Xu et al proposed a multiply-and-forward (MF) approach, in which the relay multiplies the signals sent from different source nodes.…”

Section: Introductionmentioning

confidence: 99%

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Analysis and Design of Rateless Two-way Relay Networks Based on a Multiply-and-Forward Scheme

Han

Huang

et al. 2020

Applied Sciences

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In this paper, we propose a rateless, three-stage, two-way multiply-and-forward (MF) relaying system over the Rayleigh flat fading channel, where two source nodes communicate with each other through a relay node and all nodes work on half-duplex and time-division mode. We thoroughly analyze the signals during all three stages in the proposed MF system and derive the closed-form symbol error rate (SER) expressions for an uncoded MF-two-way relay network (MF-TWRN). Furthermore, we provide the equivalent point-to-point fading channel model, which is employed to carry out the asymptotic performance analysis. We finally put forth an optimization model for the MF-TWRN with fountain codes. Simulation results show that our optimized degree distribution can provide outstanding performance for the MF-TWRN compared to those in the literature.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis and Design of Rateless Two-way Relay Networks Based on a Multiply-and-Forward Scheme

Han

Huang

et al. 2020

Applied Sciences

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“…Thereby, this is a suitable candidate for SWIPT, where we can use the excessive power used by the pilot signal for EH [ 37 ]. The power allocation and optimization comprise one of the important resource management features in SWIPT, which improves spectral efficiency and overall system performance, as mentioned in recent articles [ 38 , 39 , 40 , 41 ]. In this case study, we study the optimum power ratio between pilot and information symbols.…”

Section: Introductionmentioning

confidence: 99%

Novel SWIPT Schemes for 5G Wireless Networks

Rajaram

Khan

Tharranetharan

et al. 2019

Sensors

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In this paper, we present a few novel simultaneous wireless information and power transfer (SWIPT) schemes that can be effectively used in various 5G wireless network implementations. First, we study the possibility of integrating distributed energy beamforming with the data rate fairness beamforming in a cooperative communication system with multiple cooperative relays and multiple destination users communicating simultaneously. We show that the system exploits significant performance gain using such a joint energy and data rate fairness beamforming scheme. Further, we propose an enhanced version of the SWIPT scheme, the energy-efficient modulation-based non-orthogonal multiple access (M-NOMA) SWIPT scheme, and observe its system efficiency in terms of more harvested energy. Finally, we consider an energy-harvesting SWIPT scheme where the channel response is estimated using the energy-harvesting signal as pilots superimposed on the information signal. For such a scheme, we compute the optimum transmit power ratio between the pilot and information signals under varying SNR conditions and improve the accuracy of the decoding process at the reception.

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Joint Resource Allocation for SWIPT-Based Two-Way Relay Networks

Peng

Wang²,

et al. 2020

Energies

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This paper considers simultaneous wireless information and power transfer (SWIPT) in a decode-and-forward two-way relay (DF-TWR) network, where a power splitting protocol is employed at the relay for energy harvesting. The goal is to jointly optimize power allocation (PA) at the source nodes, power splitting (PS) at the relay node, and time allocation (TA) of each duration to minimize the system outage probability. In particular, we propose a static joint resource allocation (JRA) scheme and a dynamic JRA scheme with statistical channel properties and instantaneous channel characteristics, respectively. With the derived closed-form expression of the outage probability, a successive alternating optimization algorithm is proposed to tackle the static JRA problem. For the dynamic JRA scheme, a suboptimal closed-form solution is derived based on a multistep optimization and relaxation method. We present a comprehensive set of simulation results to evaluate the proposed schemes and compare their performances with those of existing resource allocation schemes.

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Outage-Based Resource Allocation for DF Two-Way Relay Networks with Energy Harvesting

Cited by 3 publications

References 15 publications

Analysis and Design of Rateless Two-way Relay Networks Based on a Multiply-and-Forward Scheme

Analysis and Design of Rateless Two-way Relay Networks Based on a Multiply-and-Forward Scheme

Novel SWIPT Schemes for 5G Wireless Networks

Joint Resource Allocation for SWIPT-Based Two-Way Relay Networks

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