Joint beamforming and power-splitting optimization for SWIPT-enabled MISO full-duplex two-way cooperative NOMA systems

Xu，Zhiguo1; Wang，Shuai2; Liu，Dan1; Wen，Zhigang1

2021-04-01

10.1016/j.phycom.2020.101257

Physical Communication   影响因子和分区

1874-4907

In this paper, a multiple-input single-output (MISO) full-duplex two-way cooperative non-orthogonal multiple access (NOMA) system is considered. The relay is energy-restricted and may not accomplish the information exchange between two end users. To address this problem, simultaneous wireless information and power transfer (SWIPT) is proposed, which employs power splitting (PS) at the relay to harvest energy. To maximize the harvested energy of the relay under QoS and power constraints, a joint optimization problem of the beamforming vectors and the PS ratio is formulated. The problem is nonconvex, and the original problem is transformed into a tractable form by applying the semidefinite relaxation (SDR) technique. Then a bilevel programming (BLP) based method is proposed to obtain an approximately optimal solution. Moreover, to reduce the computational complexity, a successive convex approximation (SCA)-based iterative algorithm is developed to derive a suboptimal solution. Numerical results show that our proposed strategy significantly enhances the energy harvesting performance compared with the existing transmission strategies.

Beamforming Full-duplex (FD) Non-orthogonal multiple access (NOMA) Simultaneous wireless information and power transfer (SWIPT) Two-way relay (TWR)

EI ; SCI

英语

其他

National Key R&D Program of China[2019YFF0302601]

Engineering ; Telecommunications

Engineering, Electrical & Electronic ; Telecommunications

WOS:000625051200017

ELSEVIER

20210109710484

Approximation algorithms ; Beamforming ; Constrained optimization ; Energy harvesting ; Energy transfer ; Iterative methods

Energy Conversion Issues:525.5 ; Electromagnetic Waves in Relation to Various Structures:711.2 ; Mathematics:921 ; Numerical Methods:921.6 ; Systems Science:961

2-s2.0-85098472988

Scopus

1.Beijing Key Laboratory of Work Safety Intelligent Monitoring,School of Electronic Engineering,Beijing University of Posts and Telecommunications,Beijing,100876,China
2.Department of Electrical and Electronic Engineering,Southern University of Science and Technology,Shenzhen,518055,China

Xu，Zhiguo,Wang，Shuai,Liu，Dan,et al. Joint beamforming and power-splitting optimization for SWIPT-enabled MISO full-duplex two-way cooperative NOMA systems[J]. Physical Communication,2021,45.

Xu，Zhiguo,Wang，Shuai,Liu，Dan,&Wen，Zhigang.(2021).Joint beamforming and power-splitting optimization for SWIPT-enabled MISO full-duplex two-way cooperative NOMA systems.Physical Communication,45.

Xu，Zhiguo,et al."Joint beamforming and power-splitting optimization for SWIPT-enabled MISO full-duplex two-way cooperative NOMA systems".Physical Communication 45(2021).