Open Access

ARTICLE

Throughput Analysis of HARQ Scheme Based on Full-Duplex Two-Way AF SWIPT Relay

Xiaoye Shi^1,*, Fei Ding^1,2, Haiting Zhu¹, Zhaowei Zhang¹, Lei Zhang¹

1 School of Internet of Things (Nanjing University of Posts and Telecommunications), Nanjing, 210003, China
2 Department of Electronic and Electrical Engineering (University College London), London, WC1E6BT, UK

* Corresponding Author: Xiaoye Shi. Email:

Computers, Materials & Continua 2023, 74(3), 4819-4830. https://doi.org/10.32604/cmc.2023.018637

Received 15 March 2021; Accepted 18 April 2021; Issue published 28 December 2022

Abstract

The simultaneous wireless information and power transfer (SWIPT) relay system is one of the emerging technologies. Xiaomi Corporation and Motorola Inc. recently launched indoor wireless power transfer equipment is one of the most promising applications. To tap the potential of the system, hybrid automatic repeat request (HARQ) is introduced into the SWIPT relay system. Firstly, the time slot structure of HARQ scheme based on full duplex two-way amplify and forward (AF) SWIPT relay is given, and its retransmission status is analyzed. Secondly, the equivalent signal-to-noise ratio and outage probability of various states are calculated by approximate simplification. Thirdly, the energy harvesting power in each state is calculated. Finally, the energy harvested-throughput sum function is constructed to characterize the performance of energy harvesting and data transmission. Simulation results show that the proposed HARQ scheme has better energy harvested-throughput sum function than the traditional HARQ scheme. When P₂ = 22 dB, the maximum sum function is 54.86% (the proposed HARQ scheme) and 52.307% (the traditional HARQ scheme), respectively.

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Keywords

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