TY - JOUR

T1 - On the Throughput of Interference-Based Wireless Powered Communications with Receive Antenna Selection

AU - Al-Badarneh, Yazan H.

AU - Georghiades, Costas

AU - Alouini, Mohamed-Slim

N1 - KAUST Repository Item: Exported on 2020-10-01

PY - 2020

Y1 - 2020

N2 - We propose an interference-based wireless powered communication system in which an energy constrained source harvests energy from a single dominant co-channel interferer and then transmits information to a destination equipped with $N$ receive antennas. Assuming interference dominates noise power at the destination and the receive antenna that maximizes the signal-to-interference ratio is selected, we investigate the average throughput for the delay-limited and delay-tolerant transmission modes. In particular, we derive an analytical expression of the average throughput for the delay-limited transmission mode, and a precise lower bound on the average throughput for the delay-tolerant transmission mode. Furthermore, we derive simplified asymptotic expressions of the average throughput for both transmission modes assuming asymptotically large number of receive antennas (i.e., $N \to \infty$). We use the obtained asymptotic expressions to derive insightful closed-form expressions for the optimal energy harvesting time, which maximizes the average throughput, for both transmission modes. We show that the throughput-optimal energy harvesting time for the delay-limited and the delay-tolerant transmission scale like $O \left(\frac{1} {\sqrt{N}}\right)$ and $O \left(\frac{1}{ \log(N)} \right)$, respectively, for asymptotically large $N$.

AB - We propose an interference-based wireless powered communication system in which an energy constrained source harvests energy from a single dominant co-channel interferer and then transmits information to a destination equipped with $N$ receive antennas. Assuming interference dominates noise power at the destination and the receive antenna that maximizes the signal-to-interference ratio is selected, we investigate the average throughput for the delay-limited and delay-tolerant transmission modes. In particular, we derive an analytical expression of the average throughput for the delay-limited transmission mode, and a precise lower bound on the average throughput for the delay-tolerant transmission mode. Furthermore, we derive simplified asymptotic expressions of the average throughput for both transmission modes assuming asymptotically large number of receive antennas (i.e., $N \to \infty$). We use the obtained asymptotic expressions to derive insightful closed-form expressions for the optimal energy harvesting time, which maximizes the average throughput, for both transmission modes. We show that the throughput-optimal energy harvesting time for the delay-limited and the delay-tolerant transmission scale like $O \left(\frac{1} {\sqrt{N}}\right)$ and $O \left(\frac{1}{ \log(N)} \right)$, respectively, for asymptotically large $N$.

UR - http://hdl.handle.net/10754/661068

UR - https://ieeexplore.ieee.org/document/8959114/

UR - http://www.scopus.com/inward/record.url?scp=85082527397&partnerID=8YFLogxK

U2 - 10.1109/TVT.2020.2966698

DO - 10.1109/TVT.2020.2966698

M3 - Article

VL - 69

SP - 1

EP - 1

JO - IEEE Transactions on Vehicular Technology

JF - IEEE Transactions on Vehicular Technology

SN - 0018-9545

IS - 3

ER -