Research Article
Performance Analysis of Grouped Multilevel Space-Time Trellis Coding Technique Using Cognitive Radio in Different Deployment Models
| Notation | Description |
| | Frame duration | | Sensing time | | Transmission time | | Hypothesis (if PU is inactive) | | Noise | | Noise variance | | Hypothesis (if PU is active) | | PU signal | | Variance for PU | | Received signal | | Energy detector output | | Probability of detection | | Probability of false alarm | | The threshold for the detection of PU |
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