Doriana Guiducci - Academia.edu (original) (raw)

Papers by Doriana Guiducci

21St Annual Ieee International Symposium on Personal Indoor and Mobile Radio Communications, 2010

... Claudia Carciofi, Doriana Guiducci Fondazione Ugo Bordoni Villa Griffone 40037 Pontecchio M... more ... Claudia Carciofi, Doriana Guiducci Fondazione Ugo Bordoni Villa Griffone 40037 Pontecchio Marconi (BO), Italy ccarciofi@fub.it , dguiducci@fub.it ... Commission on Non-Ionising Radiation Protection 1999, ISBN 3-9804789-6-3 [5] Framework Act, Legge quadro sulla ...

Sistemas Y Telematica, Oct 1, 2011

The ever increasing demand for multimedia wireless communication systems is a key feature of more... more The ever increasing demand for multimedia wireless communication systems is a key feature of more advanced markets. The buzzwords of personal communications, meant to provide "access to anyone, anywhere, at anytime to the wanted service", implies that radio spectrum demands are dramatically increasing in most developed markets. The last World Radiocommunication Conference (WRC-07) allocated on a co-primary basis the upper part of the UHF band to mobile services as from 2015 in Region 1, taking advantage of the Digital Dividend due to the higher spectrum efficiency of digital TV with respect to the analogue system. This will cause potentially harmful mutual interference between TV and mobile radio services, that needs to be carefully analysed. In this paper we present a study of the co-channel interference problem, proposing a methodology to take into account the mutual interference between a LTE mobile network and a DVB-T system and highlighting the different behaviour of the two radio links.

2008 Ieee 19th International Symposium on Personal Indoor and Mobile Radio Communications, Sep 1, 2008

In the present work we study different coverage strategies for the deployment of mobile radio sys... more In the present work we study different coverage strategies for the deployment of mobile radio system in urban areas, with a particular attention to environmental aspects.

Proceedings of the 5th European Conference on Antennas and Propagation, Apr 11, 2011

In this paper the hidden node problem for cognitive radio systems is addressed in real environmen... more In this paper the hidden node problem for cognitive radio systems is addressed in real environments. The hidden node margin related to the implementation of spectrum sensing algorithms in autonomous operation, has been evaluated with two different methodologies: ray-tracing deterministic and statistical approaches. The hidden node margin simulation results are shown for different urban scenarios and as a function of

Sistemas y Telemática, 2011

EMF physics and bioelectromagnetism are not easy subjects to be understood and appreciated by sec... more EMF physics and bioelectromagnetism are not easy subjects to be understood and appreciated by secondary schools students and teachers in general face difficulties in finding the right teaching approach and building a real interest in the subject. In this scenario, our work represents an attempt to develop a teaching method, alternative to standard class lectures, leading to the full comprehension of the subject and to the rising of a true interest in pupils. The proposed teaching strategies are based on ad hoc tools and a school contest. The tools have been designed as small exhibition stands where students can experiment, touch and collect information regarding EMF. Most of the tools are constantly exhibited in the Marconi Museum of Villa Griffone, in Pontecchio Marconi, but they have been projected to be easily portable for local interventions in schools.

2011 International Conference on Electromagnetics in Advanced Applications, 2011

Spectrum demands are dramatically increasing in most developed markets, due to the soaring demand... more Spectrum demands are dramatically increasing in most developed markets, due to the soaring demand for mobile broadband access. Furthermore, the ability to cover larger areas with the same power levels and the need for providing broadband access to digital divide areas is currently one of the major issues in the field of wireless communications. To cope with market needs, and

2012 IEEE International Symposium on Dynamic Spectrum Access Networks, 2012

In this work spectral resources potentially available for White Space Devices (WSDs) in the TV ba... more In this work spectral resources potentially available for White Space Devices (WSDs) in the TV band is investigated in different Italian scenarios. The adopted methodology is based on the geo-location database approach used either in autonomous operation or in combination with sensing techniques.

21st Annual IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, 2010

2011 IEEE 73rd Vehicular Technology Conference (VTC Spring), 2011

The ever increasing demand for multimedia wireless communication systems is a key feature of more... more The ever increasing demand for multimedia wireless communication systems is a key feature of more advanced markets. The buzzword of personal communications, meant to provide "access to anyone, anywhere, at anytime" to the wanted service, implies that spectrum demands are dramatically increasing in most developed markets. To cope with these needs, and in order to exploit the released spectrum resulting from the Digital Switchover, the last World Radiocommunication Conference (WRC-07) allocated on a co-primary basis the upper part of the UHF band to mobile services as from 2015. This will cause potentially harmful mutual interference between TV and mobile radio services, that needs to be carefully analyzed. In this paper we present a study of the co-channel interference problem, proposing a methodology to take into account the mutual interference between a LTE mobile network and a DVB-T system and highlighting the different behaviour of the two radio links.

2008 IEEE 19th International Symposium on Personal, Indoor and Mobile Radio Communications, 2008

2011 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, 2011

ABSTRACT The cellular layout of a mobile radio system has an impact on its performance (in terms ... more ABSTRACT The cellular layout of a mobile radio system has an impact on its performance (in terms of both coverage and capacity) as well as on its economical and environmental sustainability in terms of power consumption and of exposure of population to electromagnetic field. In this paper we study different cellular coverage strategies to identify which solutions better meet the constraints on the above mentioned parameters. Both an idealized, 2D case and a more detailed urban layout case are considered in the work: in the latter case a 3D ray tracing tool is used as propagation model. Generally, a trade-off is required to reach the best performance in terms of radio coverage, system throughput and energy efficiency.

2009 International Conference on Electromagnetics in Advanced Applications, 2009

In this work the impact of WiMAX systems is investigated in terms of electromagnetic field exposu... more In this work the impact of WiMAX systems is investigated in terms of electromagnetic field exposure evaluations. This study is performed in collaboration with the Regional Protection Agency (ARPA), in order to identify some guidelines to simplify the environmental evaluation procedures. According to the information given by the operators, typically WiMAX installations have been analyzed by means of simulation tools. The obtained results show that exposure due to these systems is compliant with the limits provided by the regulation. The ongoing activity foresees also the realization of measurement campaigns to validate simulation results.

IEEE Transactions on Electromagnetic Compatibility, 2000

In this study, the impact of Wi-Fi access points is investigated in terms of electromagnetic fiel... more In this study, the impact of Wi-Fi access points is investigated in terms of electromagnetic field exposure evaluations. Installations, typically present in common living contexts, have been analyzed by means of both wideband and narrow-band measurements and simulation-prediction tools. The obtained results show that exposure due to these systems is compliant with the limits provided by regulation.

IEEE Transactions on Antennas and Propagation, 2004

Abstract Ray tracing (RT) models are now widely adopted for field prediction in urban environment... more Abstract Ray tracing (RT) models are now widely adopted for field prediction in urban environment. Nevertheless, conventional RT tools still suffer for excessive central processing unit (CPU) time and inaccuracy in wide-band prediction. By increasing the ...

IEEE Transactions on Antennas and Propagation, 2000

A multidimensional analysis of multipath propagation in urban micro-and macro-cellular environmen... more A multidimensional analysis of multipath propagation in urban micro-and macro-cellular environment has been carried out. Multidimensional measurement data, including path-loss, delay spread and direction-of-arrival are compared with simulations performed with a 3D ray tracing model which takes diffuse scattering into account. The results are analyzed highlighting the dominant propagation mechanisms in the different cases and model performance/shortcomings. In particular, the results show that diffuse scattering plays a key role in urban propagation, with an impact on both narrowband and wideband parameters in most cases. Also, the accuracy and the characteristics of environment representation can have a significant impact on prediction even in simple topologies.

Electronics Letters, 2002

ABSTRACT The asymptotic performance of ray tracing (RT) simulators in terms of narrowband predict... more ABSTRACT The asymptotic performance of ray tracing (RT) simulators in terms of narrowband predictions is considered. From statistical models for urban propagation, an analytical formulation can be obtained to characterise RT asymptotic properties. The formation is exploited to develop an empirical model to speed-up simulation times