SPECTRUN SENSING METHOD BASED ON RELIABILITY AND CR SYSTEM USING THE SAME

摘要

PURPOSE: A spectrum sensing method based on reliability and a CR(Calculated Reliability) system using the same are provided to improve the accuracy in the spectrum detection by sharing the information on primary users which are not reliable. CONSTITUTION: Each secondary user(130) detects the energy of a signal for a primary user(110) through an energy detector. The secondary user transfers an SNR(Signal to Noise Ratio) of the received signal for the primary user and the calculated reliability to a CR(Cognitive Radio) base station(150). The CR base station judges the use of the channel of the primary user. Based on the relative reliability between the secondary users, the CR base station gives a weight value to the reliability.