Interference Mitigation for WLAN Devices Using Spectrum Sensing

The concept of spectrum sensing is, in the broad sense, the ability to detect and interpret other signals in the band and take appropriate actions by implementing adaptive techniques in the upper layers in addition to traditional interference cancellation techniques applied in the PHY layer. In this paper we present algorithms to detect interference from microwave oven for WLAN devices in the 2.4 GHz spectrum and methods to mitigate the impact from the interference. The concept can be extended to other coexistence issues as well as spectrum sharing between primary and secondary users.