RESTRICTED FREQUENCY BAND INTERFERENCE CANCELLATION

A method and apparatus is disclosed by which a device in a wireless network may determine and reduce interference when using channels in restricted frequency bands and when other networks may be transmitting in the same restricted frequency. The wireless network may be a Wi-Fi system utilizing channels/frequencies in the television white space. Receivers, such as a client device and access point (AP), may determine information on one or more interfering signals and utilize the information to reduce or cancel the interference caused by the interfering signals generated by a second network. The information may be parameters or information on the structure of the interfering signal, and may be determined by retrieving stored cache information, receiving information on a beacon signal or sampling an interfering signal. The interference cancellation may be performed by joint demodulation or parallel interference cancellation.