Optimal Resources Allocation of Bidirectional Relay Communication

Cai, Caixia; Qiu, Runhe; Jiang, Xueqin

doi:10.1109/icaiic48513.2020.9065272

Cited by 2 publications

(13 citation statements)

References 11 publications

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“…In DT, there are two source nodes S 1 and S 2 . In RT, there is also a relay node R except for two source Table 1 Existing literature comparison with this paper Optimal transmit power (OTP) [15][16], [19][20][21][22][23], [25][26][27][28], this paper…”

Section: System Modelmentioning

confidence: 99%

“…Optimal transmit time (OTT) [19][20], [22][23], [27][28], this paper Circuit power (CP) consumption [15][16], [20][21][22][23], [26][27][28], this paper…”

Section: System Modelmentioning

confidence: 99%

“…Optimal relay position (ORP) [17], [27], [29][30] nodes S 1 and S 2 . At the same time, the relay node R lies between two source nodes S 1 and S 2 .…”

Section: System Modelmentioning

confidence: 99%

“…Actually, consideration of DLs that are existed in RT can achieve further SE performance gain, and some works have been done on it. For example, cellular communication scenario involving the coexistence of one-hop DT and two-hop relaying has been studied in [24], optimal source and relay design for multiuser MIMO AF relay communication system with DLs and imperfect channel state information (CSI) has been investigated in [25], EE optimization for a twohop AF relay network with DLs over Rayleigh fading channels has been considered in [26], RT considering DLs and aiming at maximizing EE has been discussed in [27], and the optimization for energy-efficient FD transmissions with DLs has been studied in our recent work [28]. As for the comparisons between the half-duplex and FD technique of the related works, they have been given in [28].…”

Section: Introductionmentioning

confidence: 99%

“…As for the comparisons between the half-duplex and FD technique of the related works, they have been given in [28]. It has been shown that the FD technique can increase the SE and EE of the system, but only the minimizing total energy consumption (TEC) case has been discussed in [27,28].…”

Section: Introductionmentioning

confidence: 99%

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Energy-efficiency maximization bidirectional direct and relay transmission

Cai

Qiu

Jiang

et al. 2020

J Wireless Com Network

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Energy-efficient transmission (EET) has become a very important problem in wireless communication. Optimal power allocation (OPA) is one of the general methods to achieve EET. But when OPA is only considered in EET, it maybe cannot analyze EET problems accurately. This paper aims at analyzing energy-efficient bidirectional direct and relay transmission (RT) through joint optimization of transmit power (TP) and transmit time (TT) allocation. In RT, direct links (DLs) are existed. The EET problems are given with three optimization cases: (i) maximizing sum throughput (ST) to maximize energy efficiency (EE), in such case, optimal TT (OTT), optimal relay position (ORP), and outage probability analysis are given; (ii) minimizing total energy consumption (TEC) to maximize EE, in such case, optimal TP (OTP), OTT with gradient-descent algorithm, and influences of asymmetry and asymmetry transmission tasks are given; and (iii) maximizing ST and minimizing TEC simultaneously to maximize EE, in such case, Dinkelbach's algorithm and one-by-one optimal algorithm are given. Simulation results are presented to validate theoretical analysis. Results reveal that relay technique and DLs in RT can improve system's EE.

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Section: System Modelmentioning

confidence: 99%

“…Optimal transmit time (OTT) [19][20], [22][23], [27][28], this paper Circuit power (CP) consumption [15][16], [20][21][22][23], [26][27][28], this paper…”

Section: System Modelmentioning

confidence: 99%

“…Optimal relay position (ORP) [17], [27], [29][30] nodes S 1 and S 2 . At the same time, the relay node R lies between two source nodes S 1 and S 2 .…”

Section: System Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Energy-efficiency maximization bidirectional direct and relay transmission

Cai

Qiu

Jiang

et al. 2020

J Wireless Com Network

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Energy-Efficient Full-Duplex Transmission Strategies Design in Two-Way AF Relay Networks With SWIPT

Cai¹,

Xu²,

Hai³

et al. 2021

Preprint

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This paper designs two energy-efficient full-duplex transmission strategies to maximize energy efficiency (EE) of two-way amplify-and-forward relay (TWAFR) networks with simultaneous wireless information and power transfer. In the two designed transmission strategies, there are direct links (DLs) between two end nodes and the DLs can be used to convey more information. At the same time, one of the end nodes is considered battery limited and has the capability of energy harvesting from the received signals. With the first designed transmission strategy, the EE can be maximized by optimizing the power allocation, and the analytical expressions of optimal power allocation (OPA) are obtained with transformation of EE maximization problem. With the second transmission strategy, the EE can also be maximized by optimizing the power allocation, and the numerical solutions of OPA are obtained with alternating optimal algorithm. Simulations show that the EEs of the TWAFR networks can be improved with our two designed transmission strategies.

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Optimal Resources Allocation of Bidirectional Relay Communication

Cited by 2 publications

References 11 publications

Energy-efficiency maximization bidirectional direct and relay transmission

Energy-efficiency maximization bidirectional direct and relay transmission

Energy-Efficient Full-Duplex Transmission Strategies Design in Two-Way AF Relay Networks With SWIPT

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