Promising Communication Technologies for Emergency and Safety Systems
Anwar M. Mousa
Anwar M. Mousa, University of Palestine-Gaza.
Manuscript received on January 24, 2013. | Revised Manuscript received on February 15. 2013 | Manuscript published on February 28, 2013. | PP: 134-139 | Volume-2 Issue-3, February 2013.  | Retrieval Number: C1042022313 /2013©BEIESP

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Abstract: This article discusses the uses of promising modern communication technologies for emergency and safety systems focusing on cognitive radio technologies and their roles in effective spectrum use. Given that only 10% to 30% of licensed spectrum is occupied in a specific time and locations, the remaining unused spectrum constitutes a huge room for increasing bandwidth and hence the number of served users in emergency events. Based on cognitive radio and sensed spectrum holes, the paper developed new approximated linear relations between the total number of served users in emergency situations as a function of total available bandwidth. Results show that increasing the number of channels per cell, as a result of sensed spectrum holes, yields a significant increase in cell capacity and the number of served users. The paper begins with highlighting the impact of current andpromising communications technologies on strengthening disaster awareness and mitigation.
Keywords: Emergency communications, Trunking, Cognitive networks, Spectrum holes, System capacity