Before revision:  From the analysis we conclude that OS-OFDMA with subchannel notching and channel bonding could provide , under certain network configurations, almost seven times higher throughput than the design without those options enabled .
After revision:  From the analysis we conclude that OS-OFDMA with subchannel notching and channel bonding could provide , under certain network configurations, almost seven times higher throughput than the design without those options , when the activity and density of wireless microphones is very high. Furthermore, we confirm that OS-OFDMA implementation without subchannel notching, used in the IEEE 802.22, is able to support real-time and non-real-time quality of service classes, provided that wireless microphones temporal activity is moderate (with approximately one wireless microphone per 3,000 inhabitants with light urban population density and short duty cycles). Finally, two-stage spectrum sensing option improves OS-OFDMA throughput, provided that the length of spectrum sensing at every stage is optimized using our model .