Latency constrained simultaneous wireless information and power transfer

Kumar, Dileep; Alcaraz López, Onel L.; Joshi, Satya; Tölli, Antti (2021-10-14)
 
Avaa tiedosto
Lataukset: 

URL:
https://doi.org/10.1109/ISWCS49558.2021.9562178

Kumar, Dileep
Alcaraz López, Onel L.
Joshi, Satya
Tölli, Antti
Institute of Electrical and Electronics Engineers
14.10.2021

D. Kumar, O. L. Alcaraz López, S. Joshi and A. Tölli, "Latency Constrained Simultaneous Wireless Information and Power Transfer," 2021 17th International Symposium on Wireless Communication Systems (ISWCS), 2021, pp. 1-6, doi: 10.1109/ISWCS49558.2021.9562178

https://rightsstatements.org/vocab/InC/1.0/
© 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
https://rightsstatements.org/vocab/InC/1.0/
doi:https://doi.org/10.1109/ISWCS49558.2021.9562178
Näytä kaikki kuvailutiedot
Julkaisun pysyvä osoite on
https://urn.fi/URN:NBN:fi-fe2022012710505
Tiivistelmä

Abstract

This paper studies a power splitting (PS)-based simultaneous wireless information and power transfer (SWIPT) multi-user system. Specifically, an optimization problem is formulated to minimize the average transmit power of the base station (BS) by jointly optimizing the transmit beamformer and receive PS ratios, while meeting user-specific latency and energy harvesting (EH) requirements. We employ the Lyapunov optimization framework and provide a dynamic control algorithm for the time-average problem. The coupled and non-convex constraints are handled via the Successive Convex Approximation (SCA) technique, and a low-complexity iterative algorithm, where each step is computed in closed-form, is proposed by solving a system of Karush-Kuhn-Tucker (KKT) optimality conditions. The numerical results provide insights on the robustness of the proposed design to realize a power-efficient SWIPT system while ensuring latency and EH requirements in a dynamic network.

Kokoelmat