A new precoder design scheme, called the signal-controlled-leakage-noise ratio (SCLNR), is proposed. The proposed SCLNR precoder is designed to enhance the data rate and harvesting energy simultaneously. Specifically, the proposed SCLNR precoder is designed to increase the leakage signal toward energy users and decrease leakage signal toward data users, and can be attained in a closed-form solution. Numerical results are provided to evaluate the performance of the proposed SCLNR precoder for simultaneous wireless-information and power-transfer systems. The proposed SCLNR precoder achieve efficient performance compared with the precoder obtained from complicated iterative algorithm in terms of the computational complexity. The proposed SCLNR precoder outperforms a precoder that uses conventional signal-to-leakage-and-noise ratio based precoder and block diagonalization precoder for data users and energy beamformers for energy users in terms of the rate-energy region.
Bibliographical noteFunding Information:
Manuscript received December 6, 2018; revised April 3, 2019 and July 21, 2019; accepted September 8, 2019. Date of publication October 7, 2019; date of current version December 17, 2019. This work was supported by Samsung Research Funding Center of Samsung Electronics under Project SRFC-IT1701-13. The review of this article was coordinated by Dr. H. Lin. (Corresponding author: Sooyong Choi.) The authors are with the Department of Electrical and Electronic Engineering, Yonsei University, Seoul 03722, South Korea (e-mail: email@example.com; firstname.lastname@example.org; email@example.com; firstname.lastname@example.org). Digital Object Identifier 10.1109/TVT.2019.2946061
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All Science Journal Classification (ASJC) codes
- Automotive Engineering
- Aerospace Engineering
- Electrical and Electronic Engineering
- Applied Mathematics