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This paper investigates the maximum secondary throughput for a rechargeable secondary user (SU) sharing the spectrum with a primary user (PU) plugged to a reliable power supply. The SU maintains a finite energy queue and harvests energy…

Networking and Internet Architecture · Computer Science 2014-07-31 Ahmed El Shafie , Mahmoud Ashour , Tamer Khattab , Amr Mohamed

This paper investigates the maximum stable throughput of a cooperative cognitive radio system with energy harvesting Primary User and Secondary User. Each PU and SU has a data queue for data storage and a battery for energy storage. These…

Information Theory · Computer Science 2015-09-15 Ramy Amer , Amr A. El-Sherif , Hanaa Ebrahim , Amr Mokhtar

A near-field simultaneous wireless information and power transfer (SWIPT) network is investigated, where the hybrid beamforming architecture is employed at the base station (BS) for information transmission while charging energy harvesting…

Information Theory · Computer Science 2023-05-09 Zheng Zhang , Yuanwei Liu , Zhaolin Wang , Xidong Mu , Jian Chen

In this letter, we consider a large-scale multiple-input multiple-output (MIMO) system where the receiver should harvest energy from the transmitter by wireless power transfer to support its wireless information transmission. The energy…

Information Theory · Computer Science 2016-11-18 Xiaoming Chen , Xiumin Wang , Xianfu Chen

In this paper, we propose a new distributed energy beamforming and information transfer (DEBIT) scheme for realizing simultaneous wireless information and power transfer (SWIPT) in multiway relay networks (MWRNs), where multiple…

Information Theory · Computer Science 2017-10-10 Zhaoxi Fang , Xiaojun Yuan

Due to the fundamental tradeoffs, achieving spectrum efficiency and energy efficiency are two contending design challenges for the future wireless networks. However, applying radio-frequency (RF) energy harvesting (EH) in a cognitive radio…

Information Theory · Computer Science 2016-11-17 Valentin Rakovic , Daniel Denkovski , Zoran Hadzi-Velkov , Liljana Gavrilovska

Simultaneous wireless information and power transfer (SWIPT) is anticipated to have abundant applications in future machine or sensor based wireless networks by providing wireless data and energy access at the same time. In this paper, we…

Information Theory · Computer Science 2015-06-15 Jie Xu , Liang Liu , Rui Zhang

Wireless energy harvesting is regarded as a promising energy supply alternative for energy-constrained wireless networks. In this paper, a new wireless energy harvesting protocol is proposed for an underlay cognitive relay network with…

Information Theory · Computer Science 2016-01-12 Yuanwei Liu , S. Ali Mousavifar , Yansha Deng , Cyril Leung , Maged Elkashlan

Simultaneous wireless information and power transfer (SWIPT) is an appealing research area because both information and energy can be delivered to wireless devices simultaneously. In this paper, we propose a diplexer-based receiver…

Information Theory · Computer Science 2016-03-22 Chong Qin , Yi Gong , Zhi Quan

In this paper, we study wireless networks where nodes have two energy sources, namely a battery and radio frequency (RF) energy harvesting circuitry. We formulate two optimization problems with different objective functions, namely…

Information Theory · Computer Science 2017-10-03 Mohamed A. Abd-Elmagid , Tamer ElBatt , Karim G. Seddik

We consider the problem of linear transceiver design to achieve max-min fairness in a downlink MIMO multicell network. This problem can be formulated as maximizing the minimum rate among all the users in an interfering broadcast channel…

Information Theory · Computer Science 2012-09-03 Meisam Razaviyayn , Mingyi Hong , Zhi-Quan Luo

A wireless network of multiple transmitter-user pairs overheard by an eavesdropper, where the transmitters are equipped with multiple antennas while the users and eavesdropper are equipped with a single antenna, is considered. At different…

Information Theory · Computer Science 2018-08-01 Zhichao Sheng , Hoang Duong Tuan , Trung Q. Duong , H. Vincent Poor

This paper considers secure simultaneous wireless information and power transfer (SWIPT) in cell-free massive multiple-input multiple-output (MIMO) systems. The system consists of a large number of randomly (Poisson-distributed) located…

Information Theory · Computer Science 2019-04-26 Mahmoud Alageli , Aissa Ikhlef , Fahad Alsifiany , Mohammed A. M. Abdullah , Gaojie Chen , Jonathon Chambers

In this letter, we study the robust beamforming problem for the multi-antenna wireless broadcasting system with simultaneous information and power transmission, under the assumption of imperfect channel state information (CSI) at the…

Information Theory · Computer Science 2012-10-23 Zhengzheng Xiang , Meixia Tao

We consider a downlink multiuser MISO system with bounded errors in the Channel State Information at the Transmitter (CSIT). We first look at the robust design problem of achieving max-min fairness amongst users (in the worst-case sense).…

Information Theory · Computer Science 2016-11-03 Hamdi Joudeh , Bruno Clerckx

Energy harvesting for wireless communication networks is a new paradigm that allows terminals to recharge their batteries from external energy sources in the surrounding environment. A promising energy harvesting technology is wireless…

Information Theory · Computer Science 2016-11-15 Ioannis Krikidis , Stelios Timotheou , Symeon Nikolaou , Gan Zheng , Derrick Wing Kwan Ng , Robert Schober

This paper investigates multiuser multi-input single-output (MISO) downlink communications assisted by a self-sustainable intelligent reflection surface (IRS), which can harvest power from the received signals. We study the joint design of…

Signal Processing · Electrical Eng. & Systems 2020-05-26 Shaokang Hu , Zhiqiang Wei , Yuanxin Cai , Derrick Wing Kwan Ng , Jinhong Yuan

This paper investigates a multi-band harvesting (EH) schemes under cognitive radio interweave framework. All secondary users are considered as EH nodes that are allowed to harvest energy from multiple bands of Radio Frequency (RF) sources.…

Networking and Internet Architecture · Computer Science 2018-04-11 Ahmad Alsharoa , Nathan M Neihart , Sang W Kim , Ahmed E Kamal

This paper considers the downlink precoding for physical layer multicasting in massive multiple-input-multiple-output (MIMO) systems. We study the max-min fairness (MMF) problem, where channel state information (CSI) at the transmitter is…

Information Theory · Computer Science 2017-06-01 Meysam Sadeghi , Emil Björnson , Erik G. Larsson , Chau Yuen , Thomas L. Marzetta

In this paper, we propose a joint beamforming algorithm for a multiuser wireless information and power transfer (MU-WIPT) system that is compatible with the conventional multiuser multiple input multiple output (MU-MIMO) system. The…

Information Theory · Computer Science 2014-07-08 Hyukmin Son , Bruno Clerckx