Fig 1.
System model and propagation links.
Fig 2.
Access process of CRs.
Fig 3.
Burst traffic control process in node buffer.
Fig 4.
All possible transition scenarios in a given state.
Table 1.
The general parameter setting.
Table 2.
Five traffic flows with different burst intensities.
Fig 5.
Performance comparison of CRs.
Table 3.
Arrival rates of eight traffic flows with different burst intensities.
Fig 6.
Comparison of E(S) under different strategies.
Fig 7.
Comparison of Dpl under different strategies.
Fig 8.
Multi-channel access strategy based on GA.
Fig 9.
The variations under different user counts.
Fig 10.
The variations when fixed N = 20.
Fig 11.
The variations when fixed M = 10.