SPECTRUM UTILIZATION EFFICIENCY EVALUATION METHOD OF RADIO SYSTEM BY USING A SPECTRUM OVERLAY SHARING TECHNIQUE

摘要

A frequency use efficiency evaluation method of a frequency sharing wireless system is provided to suggest area efficiency which is a new index for evaluating frequency use efficiency, thereby exactly evaluating performance of a frequency sharing technology. A real coverage per a unit area is calculated by using a design parameter for the first wireless system and a design parameter for the second wireless system. Frequency use efficiency is evaluated by using the calculated real coverage per a unit area. wa shows width and breadth of a given area. rd shows a service coverage of a DTV(Digital Television). kc shows a keep-out distance of the DTV system. rw shows a WRAN cell radius.