Preprint Article Version 1 NOT YET PEER-REVIEWED

Exploiting Symmetric Energy Harvesting Protocol in Wireless Sensor Networks with Outdated Channel State Information: Protocol Design and Performance Analysis

  1. Wireless Communications Research Group, Faculty of Electrical and Electronics Engineering, Ton Duc Thang University, Hồ Chí Minh, Vietnam
  2. Faculty of Electrical Engineering and Computer Science, Technical University of Ostrava, 708 00 Ostrava, Czech Republic
Version 1 : Received: 8 September 2016 / Approved: 8 September 2016 / Online: 8 September 2016 (11:59:56 CEST)

How to cite: Do, D.; Nguyen, H.; Voznak, M. Exploiting Symmetric Energy Harvesting Protocol in Wireless Sensor Networks with Outdated Channel State Information: Protocol Design and Performance Analysis. Preprints 2016, 2016090032 (doi: 10.20944/preprints201609.0032.v1). Do, D.; Nguyen, H.; Voznak, M. Exploiting Symmetric Energy Harvesting Protocol in Wireless Sensor Networks with Outdated Channel State Information: Protocol Design and Performance Analysis. Preprints 2016, 2016090032 (doi: 10.20944/preprints201609.0032.v1).

Abstract

Wireless Powered Communication Networks (WPCN), which has attracted much attention of researchers, also been recently recommended in 5th generation (5G) wireless networks. With the help of the WPCN, the reliability and battery life of wireless low-power devices can be improved. In this paper, we investigate throughput and ergodic capacity in WPCN-assisted amplify-and-forward (AF) relaying system, considering two transmission modes including delay-tolerant and delay-limited. As important achievement, we propose symmetric energy harvesting protocol, namely time power switching relaying (TPSR) in order to find maximal throughput. In particular, both time switching and power switching coefficients in this schemes are considered. Unlike most of the previous works, we further focus on impact of outdated channel state information (CSI) in this WPCN. In order to evaluate information processing efficiency, the performance can be substantially improved by optimally harvesting time and power coefficients of the received signal at relay node for energy and information extraction, and by deploying several scenarios. By deploying Monte Carlo simulation, it is confirmed that the system performance is more sensitive to CSI estimation error, noise variance, signal-to-noise ratio (SNR) and resulting in other reasonable computations of TPSR need be deployed to obtain QoS requirement.

Subject Areas

channel state information; energy harvesting; amplify-and-forward; time power switching relaying; throughput

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