Name
Abstract | ||
|---|---|---|
Cognitive Radio (CR), a hierarchical Dynamic Spectrum Access (DSA) model, has been considered as a strong candidate for future communication systems improving spectrum efficiency utilizing unused spectrum of opportunity. However, to ensure the effectiveness of dynamic spectrum access, accurate signal classification in fading channels at low signal to noise ratio is essential. In this paper, a hierarchical cyclostationary-based classifier is proposed to reliably identify the signal type of a wide range of unknown signals. The proposed system assumes no a priori knowledge of critical signal statistics such as carrier frequency, carrier phase, or symbol rate. The system is designed with a multistage approach to minimize the number of samples required to make a classification decision while simultaneously ensuring the greatest reliability in the current and previous stages. The system performance is demonstrated in a variety of multipath fading channels, where several multiantenna-based combining schemes are implemented to exploit spatial diversity. |
Year | DOI | Venue |
|---|---|---|
2009 | 10.1155/2009/879812 | EURASIP J. Wireless Comm. and Networking |
Keywords | Field | DocType |
classification,noise,spectra,statistics,fading channel,signal to noise ratio,reliability,spectrum analysis,accuracy,sampling,symbols,hierarchies,signal processing,signals,efficiency,dynamics,ratios,channels | Multipath propagation,Antenna diversity,Computer science,Fading,Symbol rate,Signal-to-noise ratio,Algorithm,Real-time computing,Speech recognition,Spectral efficiency,Cyclostationary process,Cognitive radio | Journal |
Volume | Issue | ISSN |
2009, | 1 | 1687-1499 |
Citations | PageRank | References |
12 | 0.97 | 15 |
Authors | ||
4 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Eric Like | 1 | 33 | 4.37 |
| Vasu Chakravarthy | 2 | 161 | 26.35 |
| Paul Ratazzi | 3 | 21 | 2.42 |
| Zhiqiang Wu | 4 | 134 | 17.56 |