Outage and Bit Error Probability Analysis in Energy Harvesting Wireless Cooperative Networks

Ly Tran Thai Hoc,Quoc-Phu Ma,Huynh Tan Phuoc,Van Van Huynh,Miroslav Voznak,Thanh-Long Nguyen,Hoang-Sy Nguyen

doi:10.5755/j01.eie.25.5.24359

Abstract

This study focuses on a wireless powered cooperative communication network (WPCCN), which includes a hybrid access point (HAP), a source and a relay. The considered source and relay are installed without embedded energy supply (EES), thus are dependent on energy harvested from signals from the HAP to power their cooperative information transmission (IT). Taking inspiration from this, the author group investigates into a harvest-then-cooperate (HTC) protocol, whereas the source and the relay first harvest the energy from the AP in a downlink (DL) and then collaboratively work in uplink (UL) for IT of the source. For careful evaluation of the system performance, derivations of the approximate closed-form expression of the outage probability (OP) and an average bit error probability (ABER) for the HTC protocol over Rayleigh fading channels are done. Lastly, the author group performs Monte-Carlo simulations to reassure the numerical results they obtained.

Highlights

A wireless powered cooperative communication network (WPCCN) has been able to self-sustain their operation thanks to the new emerging approach, energy harvesting (EH) [1]
Radio frequency (RF) stands out to be a favourable energy source owing to its ease to control, availability and ability to carry energy and information simultaneously
The first block, T, is the DL energy transferred from the hybrid access point (HAP) to the source and the relay with time switching (TS) ratio of 0,1

Summary

INTRODUCTION

A wireless powered cooperative communication network (WPCCN) has been able to self-sustain their operation thanks to the new emerging approach, energy harvesting (EH) [1]. Radio frequency (RF) stands out to be a favourable energy source owing to its ease to control, availability and ability to carry energy and information simultaneously To utilize those characteristics of RF, the author group in [3]–[5] invents namely simultaneous wireless information and power transfer (SWIPT) systems for the receiver architectures. A harvest--transmit protocol has been developed recently In this protocol, the energy of signals sent by an antenna of the HAP in the DL is collected. For improving the performance of the multi-user wireless-powered communication network (WPCN), the full-duplex technique is implemented as mentioned in [17], [18] This technique utilizes two antennas for two purposes: sending DL users’ energy via wireless connection and, simultaneously, receiving UL users’ information by means of TDMA.

SYSTEM MODEL

The Outage Probability

OUTAGE PROBABILITY AND AVERAGE BIT ERROR PROBABILITY ANALYSIS

Average Bit Error Probability

CONCLUSIONS