Precoder Design for Simultaneous Wireless Information and Power Transfer with Finite-alphabet Inputs
Abstract
In this paper, we investigate the mutual information maximization for a multiple-input multiple-output (MIMO) system with simultaneous wireless information and power transfer (SWIPT), where perfect channel state information (CSI) is known at the transmitter. We formulate an optimization problem under the constraints of transmit power and harvested energy. Different from previous work, we assume the input signals to be taken from finite-alphabet inputs instead of Gaussian signals. The formulated problem is NP-hard, so a global optimal solution cannot be found with polynomial time complexity. However, by exploiting the structure of the problem, this optimization problem can be transformed into a semidefinite programming (SDP) problem, and then a near optimal algorithm based on semidefinite relaxation (SDR) technique is developed. Simulation results show the efficacy of the proposed algorithm.
Recommended Citation
X. Zhu et al., "Precoder Design for Simultaneous Wireless Information and Power Transfer with Finite-alphabet Inputs," IEEE Wireless Communications and Networking Conference, WCNC, article no. 7925807, Institute of Electrical and Electronics Engineers, May 2017.
The definitive version is available at https://doi.org/10.1109/WCNC.2017.7925807
Department(s)
Electrical and Computer Engineering
International Standard Book Number (ISBN)
978-150904183-1
International Standard Serial Number (ISSN)
1525-3511
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
10 May 2017
