Cancellation of Zigbee Interference in OFDM Based WLAN for Multipath Channel
Zigbee is one of the major sources of interference in 2.4GHz band for Wireless LANs (WLANs). It is seen whenever any Zigbee system is operating near to the WLAN system and transmitting signal at same frequency, time as of WLAN's, the later ones performance detoriate severely. So in this paper, an algorithm is proposed to estimate Zigbee interference component present in all OFDM based WLANs sub-carriers and cancel out the Zigbee interference from the received signal of WLANs receiver for multipath fading channels in frequency domain. Simulation results shows for high SNR values full cancellation of Zigbee interference or zero BER is possible.