Abstract
In this work, the volume-based method for spectrum sensing is analyzed, which is able to provide the desirable properties of constant false-alarm rate, robustness against deviation from independent and identically distributed (IID) noise and being free of noise uncertainty. By computing the first and second moments for the signal-absence and signal-presence hypotheses together with using the Gamma distribution approximation, we derive accurate analytic formulae for the false-alarm and detection probabilities for IID noise situations. This enables us to develop theoretical decision threshold as well as receiver operating characteristic. Numerical results are presented to validate our theoretical findings.
| Original language | English (US) |
|---|---|
| Article number | 6872822 |
| Pages (from-to) | 317-330 |
| Number of pages | 14 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 14 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jan 1 2015 |
| Externally published | Yes |
Bibliographical note
Publisher Copyright:© 2014 IEEE.
Keywords
- Cognitive radio
- Gamma distribution
- multiple antenna
- spectrum sensing
- volume