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Performance Analysis of Modified IEEE 802.11-Based Cognitive Radio Networks
- Authors
- Bae, Yun Han; Alfa, Attahiru S.; Choi, Bong Dae
- Issue Date
- 10월-2010
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Cognitive radio network; IEEE 802.11 DCF; throughput; absorbing Markov chain
- Citation
- IEEE COMMUNICATIONS LETTERS, v.14, no.10, pp.975 - 977
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE COMMUNICATIONS LETTERS
- Volume
- 14
- Number
- 10
- Start Page
- 975
- End Page
- 977
- ISSN
- 1089-7798
- Abstract
- This letter considers a modified IEEE 802.11-based cognitive radio network where primary users (PUs) operate on a slot-by-slot basis and secondary users (SUs) try to exploit the time unused by primary users (PUs). To improve the throughput for SUs, our IEEE 802.11-based opportunistic spectrum access (OSA) allows SUs to transmit packets with variable length depending on the remaining time of the current slot. To investigate the throughput for SUs, a novel analytical model is developed. Also, analytical results are validated by extensive simulation.
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