Simultaneous Wireless Information and Power Transfer in K-tier Heterogeneous Cellular Networks

TY - JOUR

T1 - Simultaneous Wireless Information and Power Transfer in K-tier Heterogeneous Cellular Networks

AU - Akbar, Sunila

AU - Deng, Yansha

AU - Nallanathan, Arumugam

AU - Elkashlan, Maged

AU - Aghvami, Abdol-Hamid

PY - 2016/8

Y1 - 2016/8

N2 - In this paper, we develop a tractable model for joint downlink (DL) and uplink (UL) transmission of K-tier heterogeneous cellular networks (HCNs) with simultaneous wireless information and power transfer (SWIPT) for efficient spectrum and energy utilization. In the DL, the mobile users (MUs) with power splitting receiver architecture decode information and harvest energy based on SWIPT. While in the UL, the MUs utilize the harvested energy for information transmission. Since cell association greatly affects the energy harvesting in the DL, and the performance of wireless powered HCNs in the UL, we compare the DL and the UL performance of a random MU in HCNs with nearest base station (NBS) cell association to that with maximum received power (MRP) cell association. We first derive the DL average received power for the MU with the NBS and the MRP cell associations. To evaluate the system performance, wethen derive the outage probability and the average ergodic rate in the DL and the UL of a random MU in HCNs with the NBS and the MRP cell associations. Our results show that increasing the small cell BS density, the BS transmit power, the time allocation factor, and the energy conversion efficiency, weakly affect theDL and UL performance of both cell associations. However, the UL performance of both cell associations can be improved by increasing the power splitting factor.

AB - In this paper, we develop a tractable model for joint downlink (DL) and uplink (UL) transmission of K-tier heterogeneous cellular networks (HCNs) with simultaneous wireless information and power transfer (SWIPT) for efficient spectrum and energy utilization. In the DL, the mobile users (MUs) with power splitting receiver architecture decode information and harvest energy based on SWIPT. While in the UL, the MUs utilize the harvested energy for information transmission. Since cell association greatly affects the energy harvesting in the DL, and the performance of wireless powered HCNs in the UL, we compare the DL and the UL performance of a random MU in HCNs with nearest base station (NBS) cell association to that with maximum received power (MRP) cell association. We first derive the DL average received power for the MU with the NBS and the MRP cell associations. To evaluate the system performance, wethen derive the outage probability and the average ergodic rate in the DL and the UL of a random MU in HCNs with the NBS and the MRP cell associations. Our results show that increasing the small cell BS density, the BS transmit power, the time allocation factor, and the energy conversion efficiency, weakly affect theDL and UL performance of both cell associations. However, the UL performance of both cell associations can be improved by increasing the power splitting factor.

U2 - 10.1109/TWC.2016.2570209

DO - 10.1109/TWC.2016.2570209

M3 - Article

SN - 1536-1276

VL - 15

SP - 5804

EP - 5818

JO - IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS

JF - IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS

IS - 8

ER -