This paper considers a multiple-input single-output (MISO) wireless powered communication network (WPCN) and aims to maximize the energy efficiencies (EEs) of the individual users. Specifically, we study user-wise EE maximization problems for TDMA-based WPCN (T-WPCN) and SDMA-based WPCN (S-WPCN), which are both non-convex due to their sum-of-ratios objective functions. We first solve the T-WPCN problem by transforming into a convex parametric problem and obtain its optimal solution by iteratively solving convex problems. Next, we solve the S-WPCN problem by convexifying it using feasible set reduction scheme. We show that T-WPCN outperforms S-WPCN when there is no minimum throughput requirement, while we can observe that S-WPCN outperforms T-WPCN when minimum throughput requirement is high. Simulation results verify our theoretical findings and show the effectiveness of our proposed schemes.
|Title of host publication||2019 16th IEEE Annual Consumer Communications and Networking Conference, CCNC 2019|
|Publisher||Institute of Electrical and Electronics Engineers Inc.|
|Publication status||Published - 2019 Feb 25|
|Event||16th IEEE Annual Consumer Communications and Networking Conference, CCNC 2019 - Las Vegas, United States|
Duration: 2019 Jan 11 → 2019 Jan 14
|Name||2019 16th IEEE Annual Consumer Communications and Networking Conference, CCNC 2019|
|Conference||16th IEEE Annual Consumer Communications and Networking Conference, CCNC 2019|
|Period||19/1/11 → 19/1/14|
Bibliographical noteFunding Information:
This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (2016R1D1A1A09916968).
All Science Journal Classification (ASJC) codes
- Electrical and Electronic Engineering
- Computer Networks and Communications