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Method and apparatus for estimating sampling frequency offset and for compensating said sampling frequency offset in a digital receiver
Method and apparatus for estimating sampling frequency offset and for compensating said sampling frequency offset in a digital receiver
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机译:在数字接收机中用于估计采样频率偏移并补偿所述采样频率偏移的方法和设备
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摘要
A sampling frequency offset (SFO) estimation method for use in a digital receiver to estimate a correct SFO is disclosed. The method for estimating the SFO in the digital receiver includes the steps of (a) receiving an estimated phase, and comparing a magnitude of the estimated phase with that of a predetermined standard deviation; (b) if the magnitude of the estimated phase is greater than that of the predetermined standard deviation, compulsorily setting the estimated phase to zero, and storing the estimated phase of zero; and (c) calculating an SFO value using the stored estimated phase. Therefore, the method performs zero-forcing on a phase overshoot caused by a ghost, such that a correct SFO can be estimated in the tracking mode.
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