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6. Radiosurveillance history and trends
6.1 System complexity
For several decades, radiocommunications have made a major contribution to industrial growth and economic development. They have developed by occupying an ever-wider spectrum, from VLF (Very Large Frequency – a few kilohertz) to EHF (Extremely High Frequency – a few tens of gigahertz), then by developing radio access technologies (RATs) and increasingly efficient, frequency-saving network topologies, such as cellular radio networks whose architecture is optimized for spatial reuse of spectrum resources.
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The radio-cell topology model and the normative and technical innovations that underpin it (roaming and mobility management during communications, for example) have largely influenced the evolution of other radiocommunications...
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Radiosurveillance history and trends
Bibliography
Websites
• Radio Spectrum Policy Programme http://www.ec.europa.eu/information_society/policy/ecomm/radio_spectrum/eu_policy/rspp/index_en.htm
• Cartoradio http://www.cartoradio.fr
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Events
• Spectrum Summit Brussels, March 22-23, 2010 Venue : European Parliament http://www.ec.europa.eu/information_society/policy/ecomm/radio_spectrum/_document_storage/rspp_summit/spectsumm_programme_0225.pdf
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