radio communications 9854
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radio communications 9854
RadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 32000 Vukovar, CroatiaAbstracting and non-proht use ot die material is permitted with credit to die source. Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of die editors OI publisher. No responsibility is accepted tor die accurac radio communications 9854 y ot iidoimahon contained in die published articles. Publisher assumes no responsibility liability for any damage or injury to persons or property ariradio communications 9854
sing out ot die use of any materials, instructions, mediods or ideas contained inside, .liter this work has been published bv the In I eh. authors havRadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 ©2010 In-tellWWW. i n tec h we b.o rgAdditional copies C«UI be obtained from;publicalioniXiintechweb.orgFirst published April 2010Printed in IndiaTechnical Editor: Martina PericCover designed bv Dino SmrekarRadio Communications,Edited by Alessandro Bazzip. cm.ISBN 978 933 .307 091 9VPrefaceIn the la radio communications 9854 st decades the restless evolution of information and communication technologies (ICT) brought to a deep transformation of our habits. The growth of thradio communications 9854
e Internet arid the advanc es in hardware and software implementations modified our way to communicate and to share information.Although conceived forRadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 cannot be constrained to a place: people want to have them anytime, anywhere. And die need for wireless connections starts from daily communication and embraces all fields of human life, in an ever increasing way: transportation systems, home management, healthc are, emergenc y operations. Tills bro radio communications 9854 ught to the large interest and great evolution that characterized radio technologies in the last years all over the world. Since the development of thradio communications 9854
e first wireless systems, great technological advances were performed: spread spectrum and multi-carrier techniques allowed to make transmissions overRadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 ffec ts signal propagation; new coding tec hniques were developed to increase the efficiency of radio transmissions; advanced link adaptation and power control algorithms were implemented in order to allow optimized hade-off between reliability and data rate; and many oQicr topics shall be cited.Cel radio communications 9854 lular systems, initially deployed to allow telephony in mobility for urgency needs have now reached a penetration of almost 100% of inhabitants in devradio communications 9854
eloped countries, with the ability to exchange data at more than 10 Mbit/s; at the same time, wireless acc ess to local networks can now be performed RadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 he investigation and implementation of new technologies and new radio resources management solutions. In the near future, all available technologies will be jointly used by smart devices, following the always best connected paradigm: users will connect to an heterogeneous wireless network, without t radio communications 9854 he need to know which technology they arc effectively using, rhe adoption of multiple antennas and beamforming tec hniques will reduce the effects ofradio communications 9854
interference and increase the achievable data rales. Relaying and cooperation among devices will allow better performance with lower costs and energy RadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 lity chapters written by specialists working in universities and research centers all over the world. Various aspects will lie deeply discussed: channel modeling, beamforming, multiple antennas, cooperative networks, opportunisticVIScheduling, advanced admission control, handover management, systems radio communications 9854 performance assessment, routing issues in mobility conditions, localization, web security. Advanced techniques for the radio resource management willradio communications 9854
be discussed both in single and multiple radio technologies; either in infrastruc ture, mesh or ad hoc networks. In particular, the book is organizedRadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 rough chapters 1 to 10, with particular emphasis to MIMO systems; from chapter 11 to chapter 18, data link layer and radio resource management are handled without focusing to a specific technology: backward error correction, scheduling, relaying; a deeper investigation of systems performance, with p radio communications 9854 articular reference toWiMAX andVViFi systems, is then given through chapters 19 to 25; heterogeneous wireless networks are then examined through chaptradio communications 9854
ers 26 to 29; the cross-layer issues of localization and web security, which arc of increasing interest ill modern wireless technologies, are finally RadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 verview on what is happening now and what is expected in an early future ill the field of radio communications. It must be remarked that this hook was possible thanks to the valuable work of all authors involved and to the IN-TECII technical staff.Alessandro Bazzi’‘Alessandro Bazzi works at WiLab (w radio communications 9854 ww.wilab.org), an organization with affiliates belonging to the Italian National Council for Researches CNR (ICT Department, IEIIT Institute) and Italradio communications 9854
ian Universities ot Bologna and Ferrara. WiLab has expertise in the field of telecommunications systems with particular emphasis on wireless systems; RadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2, radio communications 9854 manufacturers and service providers, and in strict cooperation with colleagues coming from the main universities in Europe and United States.RadioCommunicationsRadio CommunicationsEdited byALESSANDRO BAZZIIn-Tech intechweb.orghttps://khothuvien.cori!Published by In I ehIn-TchOlajnica 19/2,Gọi ngay
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