A pilot phase tracking loop for an OFDM receiver including a phase rotator receiving an incoming signal, a fast Fourier transform coupled to a phase rotator output, and a pilot phase error metric including a discrete Fourier transform portion coupled to the phase rotator output. The pilot phase error...http://www.google.com/patents/US6633616?utm_source=gb-gplus-sharePatent US6633616 - OFDM pilot tone tracking for wireless LAN
