Robert Schober

ORCID: 0000-0002-6420-4884
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About
Contact & Profiles
Research Areas
  • Advanced MIMO Systems Optimization
  • Cooperative Communication and Network Coding
  • Advanced Wireless Communication Technologies
  • Energy Harvesting in Wireless Networks
  • Advanced Wireless Communication Techniques
  • Full-Duplex Wireless Communications
  • Molecular Communication and Nanonetworks
  • Wireless Communication Networks Research
  • Wireless Communication Security Techniques
  • Optical Wireless Communication Technologies
  • Advanced biosensing and bioanalysis techniques
  • Wireless Body Area Networks
  • Antenna Design and Analysis
  • Satellite Communication Systems
  • Wireless Power Transfer Systems
  • Advanced Wireless Network Optimization
  • UAV Applications and Optimization
  • Millimeter-Wave Propagation and Modeling
  • Power Line Communications and Noise
  • PAPR reduction in OFDM
  • Advanced Antenna and Metasurface Technologies
  • IoT Networks and Protocols
  • Indoor and Outdoor Localization Technologies
  • Ultra-Wideband Communications Technology
  • Underwater Vehicles and Communication Systems

Friedrich-Alexander-Universität Erlangen-Nürnberg
2016-2025

Conference Board
2024

Marienhospital Osnabrück
2024

Canadian Standards Association
2017-2023

Institute of Electrical and Electronics Engineers
2008-2023

Spectrum Research (United States)
2023

Antea Group (France)
2023

Queen Mary University of London
2021-2023

Princeton University
2020-2023

University of Illinois Chicago
2023

Most of the existing demand-side management programs focus primarily on interactions between a utility company and its customers/users. In this paper, we present an autonomous distributed energy system among users that takes advantage two-way digital communication infrastructure which is envisioned in future smart grid. We use game theory formulate consumption scheduling game, where players are their strategies daily schedules household appliances loads. It assumed can adopt adequate pricing...

10.1109/tsg.2010.2089069 article EN IEEE Transactions on Smart Grid 2010-11-30

Non-orthogonal multiple access (NOMA) is an essential enabling technology for the fifth-generation (5G) wireless networks to meet heterogeneous demands on low latency, high reliability, massive connectivity, improved fairness, and throughput. The key idea behind NOMA serve users in same resource block, such as a time slot, subcarrier, or spreading code. principle general framework, several recently proposed 5G schemes can be viewed special cases. This survey provides overview of latest...

10.1109/jsac.2017.2725519 article EN IEEE Journal on Selected Areas in Communications 2017-07-11

In this paper, we consider a smart power infrastructure, where several subscribers share common energy source. Each subscriber is equipped with an consumption controller (ECC) unit as part of its meter. meter connected to not only the grid but also communication infrastructure such local area network. This allows two-way among meters. Considering importance pricing essential tool develop efficient demand side management strategies, propose novel real-time algorithm for future grid. We focus...

10.1109/smartgrid.2010.5622077 article EN 2010-10-01

In this letter, we propose a practical non-linear energy harvesting model and design resource allocation algorithm for simultaneous wireless information power transfer (SWIPT) systems. The is formulated as non-convex optimization problem the maximization of total harvested at receivers subject to minimum required signal-to-interference-plus-noise ratios (SINRs) multiple receivers. We transform considered objective function from sum-of-ratios form into an equivalent in subtractive form, which...

10.1109/lcomm.2015.2478460 article EN IEEE Communications Letters 2015-09-14

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 technology power transfer where harvest electromagnetic radiation. Thereby, may be harvested opportunistically ambient or intentionally transmit purposes. particularly interesting and challenging scenario arises when perform simultaneous information (SWIPT), as strong signals not only increase but...

10.1109/mcom.2014.6957150 article EN IEEE Communications Magazine 2014-11-01

In the future smart grid, both users and power companies can potentially benefit from economical environmental advantages of pricing methods to more effectively reflect fluctuations wholesale price into customer side. addition, be used seek social benefits implement objectives. To achieve objectives, utility company may need collect various information about their energy consumption behavior, which challenging. this paper, we propose an efficient method tackle problem. We assume that each...

10.1109/tsg.2012.2203341 article EN IEEE Transactions on Smart Grid 2012-08-13

Radio waves carry both energy and information simultaneously. Nevertheless, radio-frequency (RF) transmissions of these quantities have traditionally been treated separately. Currently, the community is experiencing a paradigm shift in wireless network design, namely, unifying transmission power so as to make best use RF spectrum radiation well infrastructure for dual purpose communicating energizing. In this paper, we review discuss recent progress laying foundations envisioned networks by...

10.1109/jsac.2018.2872615 article EN publisher-specific-oa IEEE Journal on Selected Areas in Communications 2018-09-28

In this paper, intelligent reflecting surfaces (IRSs) are employed to enhance the physical layer security in a challenging radio environment. particular, multi-antenna access point (AP) has serve multiple single-antenna legitimate users, which do not have line-of-sight communication links, presence of potential eavesdroppers whose channel state information (CSI) is perfectly known. Artificial noise (AN) transmitted from AP deliberately impair eavesdropping channels for provisioning. We...

10.1109/jsac.2020.3007043 article EN IEEE Journal on Selected Areas in Communications 2020-07-03

The application of multiple-input multiple-output (MIMO) techniques to nonorthogonal multiple access (NOMA) systems is important enhance the performance gains NOMA. In this paper, a novel MIMO-NOMA framework for downlink and uplink transmission proposed by applying concept signal alignment. By using stochastic geometry, closed-form analytical results are developed facilitate evaluation randomly deployed users interferers. impact different power allocation strategies, namely fixed cognitive...

10.1109/twc.2016.2542066 article EN IEEE Transactions on Wireless Communications 2016-03-14

The stringent requirements of a 1000x increase in data traffic and 1 ms round-trip latency have made limiting the potentially tremendous ensuing energy consumption one most challenging problems for design upcoming 5G networks. To enable sustainable networks, new technologies been proposed to improve system efficiency, alternative sources are introduced reduce our dependence on traditional fossil fuels. In particular, various techniques target reduction without sacrificing quality service....

10.1109/mwc.2017.1600343 article EN IEEE Wireless Communications 2017-08-01

This paper considers a multiuser multiple-input single-output (MISO) downlink system with simultaneous wireless information and power transfer. In particular, we focus on secure communication in the presence of passive eavesdroppers potential (idle legitimate receivers). We study design resource allocation algorithm minimizing total transmit for case when receivers are able to harvest energy from radio frequency signals. Our advocates dual use both artificial noise signals providing...

10.1109/twc.2014.2314654 article EN IEEE Transactions on Wireless Communications 2014-04-01

In this paper, we investigate resource allocation algorithm design for multicarrier non-orthogonal multiple access (MC-NOMA) systems employing a full-duplex (FD) base station serving half-duplex (HD) downlink and uplink users simultaneously. The proposed is obtained from the solution of non-convex optimization problem maximization weighted sum system throughput. We apply monotonic to develop an optimal joint power subcarrier policy. policy serves as performance benchmark due its high...

10.1109/tcomm.2017.2650992 article EN IEEE Transactions on Communications 2017-01-10

The use of multiple antennas for wireless communication systems has gained overwhelming interest during the last decade - both in academia and industry. Multiple can be utilized order to accomplish a multiplexing gain, diversity or an antenna thus enhancing bit rate, error performance, signal-to-noise-plus-interference ratio systems, respectively. With enormous amount yearly publications, field multiple-antenna often called multiple-input multiple-output (MIMO) evolved rapidly. To date,...

10.1109/surv.2009.090207 article EN IEEE Communications Surveys & Tutorials 2009-01-01

In this paper, resource allocation for energy-efficient communication in an orthogonal frequency division multiple access (OFDMA) downlink network with a large number of transmit antennas is studied. The considered problem modeled as non-convex optimization which takes into account the circuit power consumption, imperfect channel state information at transmitter (CSIT), and different quality service (QoS) requirements including minimum required data rate maximum tolerable outage probability....

10.1109/twc.2012.072512.111850 article EN IEEE Transactions on Wireless Communications 2012-07-28

Massive access, also known as massive connectivity or machine-type communication (mMTC), is one of the main use cases fifth-generation (5G) and beyond 5G (B5G) wireless networks. A typical application access cellular Internet Things (IoT). Different from conventional human-type communication, aims at realizing efficient reliable communications for a number IoT devices. Hence, characteristics include low power, connectivity, broad coverage, which require new concepts, theories, paradigms...

10.1109/jsac.2020.3019724 article EN IEEE Journal on Selected Areas in Communications 2020-09-24

In this paper, we consider deployment of energy consumption scheduling (ECS) devices in smart meters for autonomous demand side management within a neighborhood, where several buildings share an source. The ECS are assumed to be built inside and connected not only the power grid, but also local area network which is essential handling two-way communications grid infrastructure. They interact automatically by running distributed algorithm find optimal schedule each subscriber, with aim at...

10.1109/isgt.2010.5434752 article EN 2010-01-01

As a revolutionary paradigm for controlling wireless channels, reconfigurable intelligent surfaces (RISs) have emerged as candidate technology future 6G networks. However, due to the "multiplicative fading" effect, existing passive RISs only achieve limited capacity gains in many scenarios with strong direct links. In this paper, concept of active is proposed overcome fundamental limitation. Unlike that reflect signals without amplification, can amplify reflected via amplifiers integrated...

10.1109/tcomm.2022.3231893 article EN IEEE Transactions on Communications 2022-12-23

Simultaneous wireless information and power transfer (SWIPT) is a promising solution to increase the lifetime of nodes hence alleviate energy bottleneck constrained networks. As an alternative conventional harvesting techniques, SWIPT relies on use radio frequency signals, expected bring some fundamental changes design communication This article focuses application advanced smart antenna technologies SWIPT, including multiple-input multiple-output relaying techniques. These have potential...

10.1109/mcom.2015.7081080 article EN IEEE Communications Magazine 2015-04-01

This paper considers orthogonal frequency division multiple access systems with simultaneous wireless information and power transfer. We study the resource allocation algorithm design for maximization of energy efficiency data transmission. In particular, we focus on splitting hybrid receivers which are able to split received signals into two streams concurrent decoding harvesting. Two scenarios investigated considering different abilities receivers. first scenario, assume can a continuous...

10.1109/twc.2013.103113.130470 article EN IEEE Transactions on Wireless Communications 2013-11-19

The fifth generation (5G) mobile networks are envisioned to support the deluge of data traffic with reduced energy consumption and improved quality service (QoS) provision. To this end, key enabling technologies, such as heterogeneous (HetNets), massive multiple-input multiple-output (MIMO) millimeter wave (mmWave) techniques, identified bring 5G fruition. Regardless technology adopted, a user association mechanism is needed determine whether associated particular base station (BS) before...

10.1109/comst.2016.2516538 article EN IEEE Communications Surveys & Tutorials 2016-01-01

The novel concept of simultaneously transmitting and reflecting (STAR) reconfigurable intelligent surfaces (RISs) is investigated, where the incident wireless signal divided into transmitted reflected signals passing both sides space surrounding surface, thus facilitating a <i>full-space</i> manipulation propagation. Based on introduced basic model &#x2018;STAR&#x2019;, three practical operating protocols for STAR-RISs are proposed, namely energy splitting (ES), mode switching (MS), time...

10.1109/twc.2021.3118225 article EN IEEE Transactions on Wireless Communications 2021-10-14

We propose and analyze transmit antenna selection (TAS) to enhance physical layer security in a wiretap channel with N <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">A</sub> antennas at the transmitter, xmlns:xlink="http://www.w3.org/1999/xlink">B</sub> receiver, xmlns:xlink="http://www.w3.org/1999/xlink">E</sub> eavesdropper. focus on practical scenario where transmitter does not have any state information (CSI) of eavesdropper's channel. The...

10.1109/tcomm.2012.12.110670 article EN IEEE Transactions on Communications 2012-10-11

In this paper, we investigate the resource allocation algorithm design for multicarrier solar-powered unmanned aerial vehicle (UAV) communication systems. particular, UAV is powered by solar energy enabling sustainable services to multiple ground users. We study joint of 3D trajectory and wireless maximization system sum throughput over a given time period. As performance benchmark, first consider an off-line assuming non-causal knowledge channel gains. The formulated as mixed-integer...

10.1109/tcomm.2019.2900630 article EN IEEE Transactions on Communications 2019-02-21

We study resource allocation for energy-efficient communication in multi-cell orthogonal frequency division multiple access (OFDMA) downlink networks with cooperative base stations (BSs). formulate the problem joint BS zero-forcing beamforming (ZFBF) transmission as a non-convex optimization which takes into account circuit power consumption, limited backhaul capacity, and minimum required data rate. transform considered fractional form an equivalent subtractive form, enables derivation of...

10.1109/twc.2012.083112.111951 article EN IEEE Transactions on Wireless Communications 2012-09-04
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