Energy efficiency and sum-rate maximization in MIMO two-way relay networks

Rostampoor, Javane; Razavizadeh, S. Mohammad

doi:10.1109/iraniancee.2015.7146273

Cited by 5 publications

(11 citation statements)

References 18 publications

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“…In general, in a half-duplex relay network, each node operates in one of these three modes: transmission, reception and idle modes [3], [4]. The power consumption in these modes is expressed as P/ξ + P ct , P cr and P ci where P is the transmit power of each node, ξ ∈ (0, 1] represents the power amplifier efficiency and P ct , P cr and P ci stand for the circuit power consumption in the transmission, reception and idle modes, respectively.…”

Section: Energy Efficient Precoding Designmentioning

confidence: 99%

“…Two-way relay network (TWRN) which allows bidirectional communications between two end nodes provides a high EE [13]. The EE of the TWRN can also be improved by combining with MIMO techniques [4], [14]- [16]. The authors in [14] maximized the EE of a MIMO TWRN with the optimal power allocation.…”

mentioning

confidence: 99%

“…The authors in [4], considered an energy efficient beamforming design for a MIMO TWRN in which the beamforming in the relay node is designed based on zero-forcing (ZF) criterion and just the beamforming vectors of the transceivers are optimized based on EE maximization. In [16], the authors studied an energy efficient beamforming design in a MIMO TWRN.…”

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confidence: 99%

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Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks

Rostampoor

Razavizadeh

Lee

2017

IEEE Trans. Veh. Technol.

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This paper deals with the energy efficiency (EE) maximization problem in multiple-input multiple-output (MIMO) two-way relay networks with simultaneous wireless information and power transfer (SWIPT). The network consists of a multiple-antenna amplify-and-forward relay node which provides bidirectional communications between two multiple-antenna transceiver nodes.In addition, one of the transceivers is considered battery limited and has the capability of energy harvesting from the received signals. Assuming the network EE as the objective function, we design power splitting factor and optimum precoding matrices at the relay node and two transceivers. The constraints are transmit power of the nodes, harvested energy and quality of service of two transceivers. The resulting non-convex optimization problem is divided into three sub-problems which are then solved via an alternation approach. In addition, sufficient conditions for optimality are derived and the computational complexity of the proposed algorithm is analyzed. Simulation results are provided to evaluate the performance and confirm the efficiency of the proposed scheme as well as its convergence.

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Section: Energy Efficient Precoding Designmentioning

confidence: 99%

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confidence: 99%

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Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks

Rostampoor

Razavizadeh

Lee

2017

IEEE Trans. Veh. Technol.

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“…As is known, the two-way relay network, where two sources exchange their information with a helping relay node, is able to greatly improve system spectral efficiency and throughput by employing some advanced coding technologies such as network coding (NC) [29][30][31] and the twoway relay transmission has wide applications in various wireless networks, so some recent works began to investigate SWIPT in two-way relay networks; see, for example, [24][25][26][27][28]. Specifically, the work in [24] investigated SWIPT in an AF energy harvesting two-way relay system with TS receiver, where however, only the system bit error rate (BER) performance was analyzed.…”

Section: Related Workmentioning

confidence: 99%

Outage Analysis and Optimization of SWIPT in Network-Coded Two-Way Relay Networks

Jiang

Xiong

Zhang

2017

Mobile Information Systems

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This paper investigates the outage performance of simultaneous wireless information and power transfer (SWIPT) in network-coded two-way relay systems, where a relay first harvests energy from the signals transmitted by two sources and then uses the harvested energy to forward the received information to the two sources. We consider two transmission protocols, power splitting two-way relay (PS-TWR) and time switching two-way relay (TS-TWR) protocols. We present two explicit expressions for the system outage probability of the two protocols and further derive approximate expressions for them in high and low SNR cases. To explore the system performance limits, two optimization problems are formulated to minimize the system outage probability. Since the problems are nonconvex and have no known solution methods, a genetic algorithm- (GA-) based algorithm is designed. Numerical and simulation results validate our theoretical analysis. It is shown that, by jointly optimizing the time assignment and SWIPT receiver parameters, a great performance gain can be achieved for both PS-TWR and TS-TWR. Moreover, the optimized PS-TWR always outperforms the optimized TS-TWR in terms of outage performance. Additionally, the effects of parameters including relay location and transmit powers are also discussed, which provide some insights for the SWIPT-enabled two-way relay networks.

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“…In [ 22 ], an asymmetric energy harvesting model was discussed with energy efficiency (EE) precoding design in MIMO two-way relay network. EE was defined as the ratio of total energy consumption and information rate in green communications in [ 23 , 24 , 25 ]. Especially in a network composed of the energy-constrained device, EE will be an indispensable metric to measure system performance.…”

Section: Introductionmentioning

confidence: 99%

Performance Analysis of Two-Way Satellite-Terrestrial Relay Network with SWIPT

Yang

Wang

2021

Sensors

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In this paper, we investigated the performance of a two-way satellite-terrestrial DF relay network with asymmetric simultaneous wireless information and power transfer (SWIPT). In particular, selective physical-layer network coding (SPNC) was employed in the proposed network, improving the throughput performance. We derived the expressions of system average end-to-end throughput and single node detection (SND) occurrence probability. Furthermore, to observe the effects of the power splitting (PS) coefficient on the energy efficiency performance, the expressions of energy harvested in the physical-layer network coding (PNC) and SPNC protocol were also derived. Finally, theoretical analyses and Monte Carlo simulation results are presented to show: (i) SPNC protocol outperforms the conventional PNC protocol in the two-way satellite-terrestrial relay network with SWIPT in infrequent light shadowing (ILS), average shadowing (AS), and frequent heavy shadowing (FHS) Shadowed-Rician fading channels; (ii) as the channel state gets worse, SPNC protocol can achieve more performance improvement than PNC protocol; (iii) as the PS coefficient increases, the average end-to-end throughput performance increases progressively, and the average energy efficiency performance increases progressively within a certain range, while decreasing in the others.

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Energy efficiency and sum-rate maximization in MIMO two-way relay networks

Cited by 5 publications

References 18 publications

Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks

Energy Efficient Precoding Design for SWIPT in MIMO Two-Way Relay Networks

Outage Analysis and Optimization of SWIPT in Network-Coded Two-Way Relay Networks

Performance Analysis of Two-Way Satellite-Terrestrial Relay Network with SWIPT

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