scholarly journals Weighted Sum Transmit Power Minimization for Full-Duplex System With SWIPT and Self-Energy Recycling

IEEE Access ◽  
2016 ◽  
Vol 4 ◽  
pp. 4874-4881 ◽  
Author(s):  
Zhongwei Hu ◽  
Chaowei Yuan ◽  
Fengchao Zhu ◽  
Feifei Gao
Keyword(s):  
Full Duplex ◽  
Weighted Sum ◽  
Power Minimization ◽  
Duplex System ◽  
Transmit Power ◽  
Self Energy

scholarly journals Optimal Energy Beamforming to Minimize Transmit Power in a Multi-Antenna Wireless Powered Communication Network

Electronics ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 509
Author(s):  
Iqra Hameed ◽  
Pham-Viet Tuan ◽  
Mario R. Camana ◽  
Insoo Koo
Keyword(s):  
Communication Network ◽  
Minimization Problem ◽  
Time Allocation ◽  
Access Point ◽  
Power Minimization ◽  
Transmit Power ◽  
Optimal Energy ◽  
Single Antenna ◽  
Information Signal ◽  
Energy Beamforming

In this paper, we study the transmit power minimization problem with optimal energy beamforming in a multi-antenna wireless powered communication network (WPCN). The considered network consists of one hybrid access point (H-AP) with multiple antennae and multiple users with a single antenna each. The H-AP broadcasts an energy signal on the downlink, using energy beamforming to enhance the efficiency of the transmit energy. In this paper, we jointly optimize the downlink time allocation for wireless energy transfer (WET), the uplink time allocation for each user to send a wireless information signal to the H-AP, the power allocation to each user on the uplink, and the downlink energy beamforming vectors while controlling the transmit power at the H-AP. It is challenging to solve this non-convex complex optimization problem because it is numerically intractable and involves high computational complexity. We exploit a sequential parametric convex approximation (SPCA)-based iterative method, and propose optimal and sub-optimal solutions for the transmit power minimization problem. All the proposed schemes are verified by numerical simulations. Through the simulation results, we present the performance of the proposed schemes based on the effect of the number of transmit antennae and the number of users in the proposed WPCN. Through the performance evaluation, we show that the SPCA-based joint optimization solution performance is superior to other solutions.

Transmit-Power Minimization for NOMA-Enabled Traffic Offloading With Security Provisioning

2018 ◽  
Vol 22 (5) ◽  
pp. 986-989 ◽  
Author(s):  
Changsheng Yu ◽  
Li Yu ◽  
Yuan Wu ◽  
Yanfei He
Keyword(s):  
Power Minimization ◽  
Transmit Power ◽  
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