Andreas Miaoudakis

Sphynx Technologies Solutions A.G.

The evolution of emerging technologies that use Radio Frequency Electromagnetic Field (RF-EMF) has increased the interest of the scientific community and society regarding the possible adverse effects on human health and the environment. This article provides NextGEM’s vision to assure safety for EU citizens when employing existing and future EMF-b...

While Europe faces dramatic changes and profound challenges, emerging technologies that emit Radio Frequency (RF) Electromagnetic Field (EMF) exposure, particularly in telecommunications, have raised public concerns about possible adverse effects to human health. To address these concerns, the NextGEM Project aims to provide a safe living environme...

Modern industrial systems now, more than ever, require secure and efficient ways of communication. The trend of making connected, smart architectures is beginning to show in various fields of the industry such as manufacturing and logistics. The number of IoT (Internet of Things) devices used in such systems is naturally increasing and industry lea...

The increase in the world's population has led to a massive rise in human consumption of the planet's natural resources, well beyond their replacement rate. Traditional recycling concepts and methods are not enough to counter such effects. In this context, a circular economy (CE), that is, a restorative and regenerative by-design economy, can refor...

Insurance of digital assets is becoming an important aspect nowadays, in order to reduce the investment risks in modern businesses. GDPR and other legal initiatives makes this necessity even more demanding as an organization is now accountable for the usage of its client data. In this paper, we present a cyber insurance framework, called CyberSure....

The innovative capabilities of 5G technologies, such as software‐defined networking (SDN) and network function virtualization (NFV), open up a variety of possibilities for improved and novel service provisioning. Nevertheless, technologies such as SDN expand the attack surface of the communication infrastructure, thus necessitating the introduction...

Insurance of digital assets is becoming an important aspect nowadays, in order to reduce the investment risks in modern businesses. GDPR and other legal initiatives makes this necessity even more demanding as an organization is now accountable for the usage of its client data. In this paper, we present a cyber insurance framework, called CyberSure....

Reflecting upon the sustainability challenges cities will be facing in the near future and the recent technological developments allowing cities to become "smart", we introduce IDEAL-CITIES; a framework aiming to provide an architecture for cyber-physical systems to deliver a data-driven Circular Economy model in a city context. In the IDEAL-CITIES...

A popular application of ambient intelligence systems constitutes of assisting living services on smart buildings. As intelligence is imported in embedded equipment the system becomes able to provide smart services (e.g. control lights, airconditioning, provide energy management services etc.). IoT is the main enabler of such environments. However,...

Massive advancements in computing and communication technologies have enabled the ubiquitous presence of interconnected computing devices in all aspects of modern life, forming what is typically referred to as the “Internet of Things”. These major changes could not leave the industrial environment unaffected, with “smart” industrial deployments gra...

We report on preliminary results regarding the applicability of nanostructured composite layers for electromagnetic interference shielding in the frequency range of 10–20 GHz. The layers, based on commercially available graphene nanoplatelets and ZnO nanopowder grown using a hydrothermal procedure, were found to induce quite effective attenuation o...

The assessment of exposure to the radiation emitted by wireless devices need to take into account the complexity of WLAN networks and the quasi-stochastic nature of Wi-Fi signals. By analyzing only the maximum possible field strength and the traffic in such networks, one cannot accurately express the human exposure level. The type of transmitted in...

In an Emergency and/or Crisis Situations (ECS) like earthquakes, floods, tsunamis, fires, terrorist attacks etc. the adequate operation of communication services is of extreme importance. History has shown that poor communication in such cases resulted in several casualties. In ECS fixed communication infrastructure might be unserviceable due to su...

As a result of the rapid evolution of mobile communications in the last decade many propagation models have been developed for radio planning purposes. To verify the various propagation models, accurate measurements of the received signals have to be performed especially at the edges of mobile communication cells, where the received power is at ver...

In emergency and crisis situations (ECS) like earthquakes, tsunamis, terrorist attacks, it is very important that communication facilities are operative to provide services both to rescue teams and civilians. In ECS it is very common that communication premises are often unable to provide services, either due to physical damages or traffic overload...

The evolution of wireless networking technologies in recent years leads to a faster, safer and more efficient knowledge transfer with the demand of growing up the volume of information handled. The ultimate aim of improving the living standards of citizens, requires a new foundation to evaluate and improve the existing to the present relevant measu...

Wireless networking technologies in recent years have witnessed important developments since the advantages benefit both data transmission service providers, and individuals or ordinary users. Ease of installation of a wireless network, led to the development of millions of Wi-Fi networks throughout the world. Nevertheless, Wi-Fi has certain drawba...

Methods of computational prediction can be used or specific measurements have to be performed for the estimation of human exposure to nonionizing electromagnetic fields at a certain place. According to the exposure standards, the predicted or the measured values have to be spatially averaged in an area representing the dimensions of the human body...

The possible adverse effects on human health of exposure to nonionizing electromagnetic fields have led international organizations and several countries to adopt exposure limits regarding public or occupational safety. To ensure compliance with these limits, specifically designed measurements with suitable instruments have to be performed. Since u...

The Wireless Local Area Networks (WLANs) are often used as a wireless extension to the typical office network infrastructure providing mobility to the users. In addition Wireless Personal Area Networks (WPANs) serve interconnection to computer and mobile phone peripherals as headsets, input devices, printers etc. Thus it is common that WLANs and WP...

One of the most common and popular practices on measuring the non-ionising electric and/or magnetic field strength employs field meters and the appropriate electric and/or magnetic field strength sensors. These measurements have to meet several requirements proposed by specific guidelines or standards. On the other hand, performing non-ionising exp...

The increased number of everyday applications that rely on wireless communication has drawn an attention to several concerns on the adverse health effects that prolonged or even short time exposure might have on humans. International organisations and countries have adopted guides and legislation for the public safety. They include reference levels...

Electromagnetic Radiation found in a typical building today is an integral part of technology evolution. Electric power distribution networks are present in every building producing time variable magnetic and electric fields in a low frequency range (50 Hz - 100 KHz) commonly named as Extremely Low Frequencies (ELF). On the other hand wireless netw...

The equipment used for radiation hazard evaluation usually is based in measuring the total electric field strength over a frequency bandwidth of interest. However, because of the fact that the defined Reference Levels (RL) according to the ICNIRP Guidelines or other specific legislation are frequency dependent, the compliance of a particular RF or...

The apparatus used for broadband radiation hazard evaluation usually measures and displays the total electric field strength (RMS value) over a frequency bandwidth. However, given that the reference levels (RL), according to the ICNIRP Guidelines or other specific legislations, are frequency dependent, the compliance of a particular RF or microwave...

In this work the characteristics of the radio channel of a typical industrial environment are examined in detail by means of experimental measurements. The channel impulse response is measured at several representative positions. These measurements are then used to calculate important propagation parameters like attenuation, rms delay spread and co...

A multicarrier transmission system is sensitive to carrier frequency offset (CFO) that produces severe inter-carrier interference (ICI). In this work a novel architecture for CFO cancellation is proposed for HIPERLAN/2 type modems. The proposed architecture consists of two parts: a coarse and a fine CFO cancellation subsystem. In the coarse subsyst...

A multicarrier transmission system is sensitive to Carrier Frequency Offset (CFO) that produces severe InterCarrier Interference (ICI). In this work a novel architecture for CFO cancellation is proposed for HIPERLAN/2 type modems. The proposed architecture consists of two parts: A coarse and a fine CFO cancellation subsystem. In the coarse subsyste...

The performance of carrier frequency offset (CFO) estimators is examined when applied to Hiperlan2 modems. The performance of various estimator procedures is evaluated by means of simulation. A new estimation scheme is proposed for Hiperlan2 that takes advantage of the structure of the physical frames. Its major advantage is that the estimator oper...

Orthogonal frequency division multiplexing (OFDM) is one promising wireless transmission technique that can provide high bit rates and can support a multitude of services. We use an OFDM transceiver complying with the physical layer of the Hiperlan/2 protocol. We examine the suitability and evaluate the performance of such an advanced radio technol...