Results 241 to 250 of about 75,084 (278)

Hybrid backscatter communication for wireless powered communication networks

2016 International Symposium on Wireless Communication Systems (ISWCS), 2016
We propose hybrid backscatter communication for wireless powered communication networks (WPCNs) to increase transmission range and provide uniform rate distribution in heterogeneous network (HetNet) environment. In such HetNet where the TV tower or high-power base station (macrocell) coexists with densely deployed small-power access points (e.g., small-
Sung Hoon Kim, Dong In Kim
openaire   +1 more source

Stability Analysis of Wireless Powered Communication Networks

2020 Asia-Pacific International Symposium on Advanced Reliability and Maintenance Modeling (APARM), 2020
In RF-based wireless powered communication networks (WPCNs), wireless devices can receive energy from electromagnetic waves radiated by dedicated energy transmitters or hybrid access points for operation. However, the energy charging rate at a wireless device is usually unstable or low because of time-varying characteristics of wireless channels or ...
Mingfu Li, Ching-Chieh Fang, Huei-Wen Ferng   +2 more
openaire   +1 more source

Wireless Powered Communication Networks with Backscatter Communication

2018
By exploiting the advantages of the harvest-then-transmit (HTT) mode and the BackCom mode, two schemes that integrating the HTT mode and the BackCom mode are proposed for the WPCN in this chapter, i.e., the hybrid user scheme and the hybrid mode scheme.
Guan Gui, Bin Lyu
openaire   +1 more source

Learning AP in wireless powered communication networks

International Journal of Communication Systems, 2019
SummaryIn a wireless powered communication network (WPCN), sensor nodes harvest energy to transmit information. By a harvest‐then‐transmit (HT) protocol, nodes can be classified into either energy receiving (ER) or data transmitting (DT) nodes depending on the current level of the harvested energy.
Arshad Iqbal, Yunmin Kim, Tae‐Jin Lee
openaire   +1 more source

Introduction to Wireless Powered Communication Network

2018
Wireless power transfer (WPT) plays a critical role in relaxing concerns related to limited operational lifetime of wireless networks. Different from traditional network devices, which rely on batteries for their energy need, devices in wireless powered communication networks (WPCNs) are able to scavenge energy from radio-frequency (RF) signals.
Abbas Jamalipour, Ying Bi
openaire   +1 more source

Link Scheduling in Wireless Powered Communication Networks

2020 International Conference on Computing, Networking and Communications (ICNC), 2020
We consider a Hybrid Access Point (HAP) that is equipped with a Successive Interference Cancellation (SIC) radio, and Radio Frequency (RF) energy harvesting devices. The HAP is responsible for charging and collecting data from these devices. A fundamental problem at the HAP is scheduling uplink transmissions.
Ying Liu, Kwan-Wu Chin, Changlin Yang
openaire   +1 more source

Wireless powered communication networks in interference channel

2017 IEEE International Conference on Communications (ICC), 2017
In this paper, we study a wireless powered communication network (WPCN) in a two-user interference channel, where two hybrid access-points (H-APs) support a user in each cell. In this two cell scenario, the H-APs first transmit the energy signal to charge both users in the downlink (DL) phase.
Hanjin Kim, Hoon Lee, Inkyu Lee
openaire   +1 more source

Opportunistic Scheduling in Wireless Powered Communication Networks

IEEE Transactions on Wireless Communications, 2017
In this paper, we apply the notion of opportunistic scheduling in wireless-powered communication networks (WPCNs). The considered WPCN model consists of a base station (BS) and multiple energy harvesting users (EHUs), where the BS broadcasts radio frequency energy to the EHUs over the downlink and receives information from the EHUs over the uplink.
Zoran Hadzi-Velkov, Ivana Nikoloska, Hristina Chingoska, Nikola Zlatanov   +3 more
openaire   +1 more source

Mobile power management for wireless communication networks

Wireless Networks, 1997
For fixed quality-of-service constraints and varying channel interference, how should a mobile node in a wireless network adjust its transmitter power so that energy consumption is minimized? Several transmission schemes are considered, and optimal solutions are obtained for channels with stationary, extraneous interference.
John M. Rulnick, Nicholas Bambos
openaire   +1 more source

Energy-Neutral Wireless Sensor Network Based on SWIPT in Wireless Powered Communication Networks

ICC 2020 - 2020 IEEE International Conference on Communications (ICC), 2020
For energy-neutral operation (ENO) of wireless sensor networks (WSNs), we consider a WSN deployed in a wireless powered communication network. In this network, sensor nodes with high harvesting energies and good link budgets have energy remaining after sending their data to the cluster head (CH), whereas the CH suffers from energy scarcity.
Hyun-Ho Choi, Dara Ron, Muy Sengly, Jung-Ryun Lee   +3 more
openaire   +1 more source