Name
Abstract | ||
|---|---|---|
Cognitive Radio systems are a promising solution to the spectrum scarcity problem, but precise modeling of spectrum utilization is vital to the analysis and design of such systems. In this paper, we mathematically derive the Probability Mass Function (PMF) of the fraction of available subcarriers for the secondary users in an OFDMA based cognitive radio system for different requesting distributions. The PMF of the total number of requested subcarriers from all primary users is derived and the effect of the requesting distribution on the asymptotic spectrum availability for secondary users is studied. It is shown that if a requesting distribution is undesired, providing more subcarriers will not increase the spectrum availability for the secondary network. |
Year | DOI | Venue |
|---|---|---|
2012 | 10.1109/IWCMC.2012.6314231 | 2012 8TH INTERNATIONAL WIRELESS COMMUNICATIONS AND MOBILE COMPUTING CONFERENCE (IWCMC) |
Keywords | Field | DocType |
Cognitive radio, dynamic spectrum access, OFDMA, spectrum availability | Probability mass function,Spectrum management,Computer science,Computer network,Frequency-division multiple access,Spectrum availability,Distributed computing,Radio spectrum management,Cognitive radio | Conference |
ISSN | Citations | PageRank |
2376-6492 | 1 | 0.35 |
References | Authors | |
6 | 4 | |
Name | Order | Citations | PageRank |
|---|---|---|---|
| Nariman Rahimian | 1 | 8 | 1.15 |
| Costas N. Georghiades | 2 | 301 | 32.18 |
| Hasari Celebi | 3 | 89 | 13.00 |
| Khalid A. Qaraqe | 4 | 808 | 95.80 |