Research Article
A Self-Learning MAC Protocol for Energy Harvesting and Spectrum Access in Cognitive Radio Sensor Networks
Table 1
Main simulation parameters.
| Parameter | Value |
| Cognitive sensor nodes | 900 | Spectrum bands | 5 | Simulated time epochs | 200,000 | PU active probability | | Harvested energy per slot | μW × τ | Transmission energy per packet | 2.25 mW × τ | Cycle length | 256 | Harvesting parameter | 0.6 | Minimum probability | 0.01 | Transmit score parameter | 0.5 | Transmit score parameter | 0.2 | Aging factor | 0.8 | Battery maximum stored energy per sensor node | | Initial battery energy | 0 mW × τ (empty) | Mean packet arrival rate (packet per epoch) | to | , for modified-CSMA | |
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