This letter considers simultaneous wireless information and power transfer (SWIPT) in multiple-input single-output broadcasting systems based on the integer forcing (IF) technique where multiple receivers are equipped with a power splitting circuit and able to harvest energy and decode information at the same time. The optimization problem that incorporates the beamforming matrix and IF coefficients matrix designs is formulated to minimize the transmit power at transmitter, while guaranteeing the achievable rate and harvested energy threshold of each receiver. To tackle the NP-hardness and non-convexity of the optimization problem, we propose an iterative algorithm consisting of two sub-problems. Simulation results provide the comparison of the performance of SWIPT systems with and without IF technique.
Bibliographical noteFunding Information:
Manuscript received August 3, 2018; accepted August 21, 2018. Date of publication August 30, 2018; date of current version February 19, 2019.This work was supported by the Samsung Research Funding Center of Samsung Electronics under Project SRFC-IT1701-13. The associate editor coordinating the review of this paper and approving it for publication was X. Zhou. (Corresponding author: Chungyong Lee.) The authors are with the School of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, South Korea (e-mail: email@example.com; firstname.lastname@example.org; email@example.com). Digital Object Identifier 10.1109/LWC.2018.2867863
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All Science Journal Classification (ASJC) codes
- Control and Systems Engineering
- Electrical and Electronic Engineering