A method for selecting a frequency offset for automatic frequency correction in a pilot symbol assisted demodulation system comprises the steps of receiving a signal comprising a plurality of symbols having discrete possible values, and pilot symbols at predetermined locations in the signal having a...http://www.google.com.hk/patents/US6519300?utm_source=gb-gplus-share專利 US6519300 - System and method for automatic frequency correction in a pilot symbol assisted demodulator
