Filtered signal's frequency offset estimating method, involves filtering original signal based on filter coefficients to obtain reference signal, and estimating frequency offset value based on channel component of filtered signal

摘要

The method involves deriving a series of filter coefficients from other filter coefficients. An original signal is filtered based on the latter filter coefficients to obtain a reference signal. A frequency offset value is estimated based on a channel component of the filtered signal and the reference signal. Third filter coefficients are permuted to obtain the latter filter coefficients, and signs of one of the latter filter coefficients are reversed. The frequency offset value is selected as a transmitting frequency compensation value. Independent claims are also included for the following: (1) a signal transceiver comprising a filter (2) a method for automatic frequency control.