Abstract
Hadamard ratio test is a well-known approach to robust signal detection in multivariate analysis. Recently, it has been exploited for robust spectrum sensing in cognitive radio, but its detection performance is not yet completely analyzed. This work is devoted to accurate detection performance analysis of the Hadamard ratio method for robust spectrum sensing. By computing the first and second exact negative moments for the signal-presence hypothesis along with employing the Beta distribution approximation, we derive accurate analytic formulae for detection probability. This enables us to theoretically evaluate the detection behavior of the Hadamard ratio test. Numerical results are presented to validate our theoretical findings.
| Original language | English |
|---|---|
| Article number | 6905795 |
| Pages (from-to) | 750-758 |
| Journal | IEEE Transactions on Wireless Communications |
| Volume | 14 |
| Issue number | 2 |
| Online published | 19 Sept 2014 |
| DOIs | |
| Publication status | Published - Feb 2015 |
Research Keywords
- Beta distribution
- Cognitive radio
- generalized likelihood ratio test
- multiple antennas
- robustness
- spectrum sensing
RGC Funding Information
- RGC-funded
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