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Performance Analysis of Modified IEEE 802.11-Based Cognitive Radio Networks

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3 Author(s)
Yun Han Bae ; Dept. of Math., Korea Univ., Seoul, South Korea ; Alfa, A.S. ; Bong Dae Choi

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.

Published in:

Communications Letters, IEEE  (Volume:14 ,  Issue: 10 )