Protection of Wireless Microphones in IEEE 802.22 Cognitive Radio Network

To improve the utilization of licensed spectrums, the IEEE 802.22 standard is designed to reuse the bandwidths allocated for TV and Wireless Microphones opportunistically for data communication. To avoid interference from equipments of 802.22 networks, beacon devices are designed to protect the Wireless Microphones. They generate beacons so that the devices in 802.22 networks can detect their existence. In this paper, we explore the details of beacon design in the IEEE 802.22 Task Group 1. As an active member of the group, we have made contributions on FEC design of the beacon. We also provide some simulation results of the designed beacon.