Research Article

A Survey on Coexistence in Heterogeneous Wireless Networks in TV White Spaces

Table 1

Classification of TVWS cognitive devices and the FCC requirements.

Type of devicePositionGeo-location and Database access requirementMax transmission power allowanceOperation allowance on adjacent channels

FixedFixedYes=4WNo
Portable Mode I DeviceFixed or flexibleNo=100mWYes, if =40mW
Portable Mode II DeviceFixed or flexibleYes=100mW=40mW
Sensing DeviceFixed or flexibleNo=50mW=40mW