Opportunistic DF-AF Selection Relaying in Hybrid Wireless and Power Line Communication for Indoor IoT Networks

Quyet-Nguyen Van,Hoang-Phuong Van,Jakub Jalowiczor,Hoang Thien Van,Miroslav Voznak,Hoang-Sy Nguyen,Danh Hong Le

doi:10.3390/s21165469

Abstract

This manuscript investigates the system performance of hybrid wireless and power line communication networks for indoor Internet of Things applications. Differentiating itself from the existing literature, the performance of the direct link and dual-hop energy harvesting relay-aided links is analyzed under the condition of indoor fading modeled by log-normal distribution. Moreover, the manuscript presents the analytical expressions of the successful transmission probability of the deployed opportunistic decode-and-forward and amplify-and-forward relay selection scheme, and validates them with Monte Carlo simulations. Moreover, the impact of different system parameters on the successful transmission probability is revealed. For the considered hybrid system, in general, the opportunistic decode-and-forward relaying scheme outperforms the opportunistic amplify-and-forward relaying scheme. As importantly, increasing the source to relay distance and power splitting ratio over certain limits significantly deteriorates the system performance, indicated by the decrease in the successful transmission probability.

Highlights

The fifth-generation (5G) wireless communication is founded on the 4G/IMT-Advanced standards to serve the forecasted tens or even up to hundreds of billions of connected devices due to the continuous growth of state-of-the-art personal communication applications [1,2]
With inspiration taken from the aforementioned studies, this manuscript focuses on the ST P performance of the Opportunistic Decode-and-Forward (ODF)-AF relaying selection in HD cooperative relaying networks given the indoor power line communication (PLC) condition making up the hybrid wireless and PLC (HWP), whose characteristics are modeled with log-normal fading channels
Utilizing Theorem 1 and 2, the overall successful event is established with the help of the Selection Combining (SC) method, which combines the ST P of the direct link and the Opportunistic Decode-and-Forward and Amplify-and-Forward (ODF-AF) relay-aided links to apply for the HWP system

Summary

Introduction

The fifth-generation (5G) wireless communication is founded on the 4G/IMT-Advanced standards to serve the forecasted tens or even up to hundreds of billions of connected devices due to the continuous growth of state-of-the-art personal communication applications [1,2]. ODF-AF selection relaying protocol that enables relays to adaptively switch between DF and AF considering their local signal-to-noise ratio (SNR) was proposed and investigated in [24,25,26,27] It was proven in [28,29] that the ODF-AF scheme outperforms the standalone. With inspiration taken from the aforementioned studies, this manuscript focuses on the ST P performance of the ODF-AF relaying selection in HD cooperative relaying networks given the indoor PLC condition making up the HWP, whose characteristics are modeled with log-normal fading channels. The ST P and throughput performance of the ODF-AF selection relaying scheme in the HWP are analyzed and validated with Monte Carlo simulation results It is worth noting the important notations utilized in this manuscript. The abbreviations used in this manuscript are listed above the References section for ease of lookup

System Model

Performance Analysis

Throughput Performance

Numerical Results and Discussion

Conclusions