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The result of our firt scenario is :
When both frequencies of the two primary stations are simultaneously occupied, the failure rate of the secondary SB is equal to 1, that is 100%.
This means that no SU communication is transmitted in the network.
The rate then drops from 1 to 0.25 when there is at least 1 hole available in one of the frequencies of each primary base station, giving the secondary SB at least one hole to transmit its SU's communication on the network.
This rate drops to 0.11 when there are at least two holes available on the frequencies of at least one of the primary SBs. The Secondary station has at least 2 channels and transmits the SU's communications.
The failure rate decreases with the availability of holes opened by the two primary base stations.
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IEEE/ICACT20250130 Slide.12
[Big Slide]