A Heuristic for Mixed Integer and Nonlinear Programming in a WPCN-NOMA Scenario with Imperfect SIC

Pedro Victor Martins Castro, Francisco Rafael Marques Lima

DOI: 10.14209/sbrt.2024.1571036808

Evento: XLII Simpósio Brasileiro de Telecomunicações e Processamento de Sinais (SBrT2024)

Keywords: wireless powered communication network (WPCN) non-orthogonal multiple access (NOMA) imperfect successive interference cancellation (SIC) wireless power transfer (WPT)

Abstract

This paper presents a wireless powered communication network (WPCN) that features a power beacon (PB) with multiple antennas for power transfer to terminals employing energy harvesting (EH). These terminals, each with a single antenna, in turn, use non-orthogonal multiple access (NOMA) to transmit their data to an access point (AP) with a single antenna, which employs imperfect successive interference cancellation (SIC). The objective of this work is to propose a heuristic that maximizes the throughput of the terminals subject to quality-of-service (QoS) conditions. To this end, comparisons of the heuristic with branch-and-bound (BB) through simulations are carried out, and it is demonstrated that the heuristic, by optimizing the power for each terminal, yields better results in terms of throughput and energy efficiency compared to the BB algorithm.

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