Name
Title | ||
|---|---|---|
Bayesian generalised likelihood ratio test-based multiple antenna spectrum sensing for cognitive radios |
Abstract | ||
|---|---|---|
In this study, the authors address the problem of multiple antenna spectrum sensing in cognitive radios by exploiting the prior information about unknown parameters. Specifically, under assumption that unknown parameters are random with the given proper distributions, the authors use a Bayesian generalised likelihood ratio test (B-GLRT) in order to derive the corresponding detectors for three different scenarios: (i) only the channel gains are unknown to the secondary user (SU), (ii) only the noise variance is unknown to the SU, (iii) both the channel gains and noise variance are unknown to the SU. For the first and third scenarios, the authors use the iterative expectation maximisation algorithm for estimation of unknown parameters and the authors derive their convergence rate. It is shown that the proposed B-GLRT detectors have low complexity and besides are optimal even under the finite number of samples. The simulation results demonstrate that the proposed B-GLRT detectors have an acceptable performance even under the finite number of samples and also outperform the related recently proposed detectors for multiple antenna spectrum sensing. |
Year | DOI | Venue |
|---|---|---|
2013 | 10.1049/iet-com.2012.0624 | IET Communications |
Keywords | Field | DocType |
signal denoising,expectation-maximisation algorithm,noise variance,statistical testing,bayes methods,cognitive radio,antenna arrays,convergence rate,channel gains,radio spectrum management,wireless channels,bayesian generalised likelihood ratio test,convergence of numerical methods,iterative expectation maximisation,secondary user,multiple antenna spectrum sensing,cognitive radios,signal detection,b-glrt detectors | Generalised likelihood ratio test,Finite set,Communication channel,Algorithm,Real-time computing,Rate of convergence,Statistics,Multiple antenna,Detector,Mathematics,Bayesian probability,Cognitive radio | Journal |
Volume | Issue | ISSN |
7 | 18 | 1751-8628 |
Citations | PageRank | References |
1 | 0.37 | 0 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Saeid Sedighi | 1 | 21 | 5.80 |
| Abbas Taherpour | 2 | 230 | 19.77 |
| Shaghayegh S. M. Monfared | 3 | 7 | 2.84 |