Name
Abstract | ||
|---|---|---|
In this paper, a new clear channel assessment (CCA) method: cascaded-CCA, is proposed. The primary motivation for the proposed approach is to integrate the respective advantages of two standard CCA mechanisms, energy detect and preamble detect, to arrive at a new dual threshold CCA family that can provide greater flexibility towards tuning MAC performance. Cascaded-CCA integrates energy efficiency of the energy detector (ED) and the reliability of the preamble detector (PD). The probability of detection/false alarm and power consumption of cascaded-CCA in the CCA modules of IEEE 802.11b are analyzed and compared with ED and PD as an example. The performance of cascaded-CCA is explored via MATLAB simulations that implement the CCA modules and medium access control (MAC) protocol for IEEE 802.11 and IEEE 802.15.4. Simulation results showed that cascaded-CCA improves the energy efficiency significantly compared to ED-only or PD-only CCA. In addition, ED, PD, and cascaded CCA are applied to a cognitive network scenario to validate the effectiveness of the proposed cascaded-CCA. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.3837/tiis.2011.08.003 | KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS |
Keywords | Field | DocType |
cascaded-CCA,energy detection,preamble detection,MAC performance,IEEE 802.11,IEEE 802.15.4,cognitive network | Wireless network,IEEE 802.11,False alarm,Preamble,Computer science,Efficient energy use,Computer network,Statistical power,Detector,Cognitive network | Journal |
Volume | Issue | ISSN |
5 | 8 | 1976-7277 |
Citations | PageRank | References |
2 | 0.42 | 1 |
Authors | ||
3 | ||
Name | Order | Citations | PageRank |
|---|---|---|---|
| Soo Young Shin | 1 | 334 | 62.53 |
| I. Ramachandran | 2 | 195 | 14.74 |
| Sumit Roy | 3 | 2245 | 203.71 |