Lowe, Hauptman, Ham & Berner, LLP
Sampling frequency offset estimation apparatus and method of OFDM system
A sampling frequency offset estimation apparatus of an orthogonal frequency division multiplexing (OFDM) system includes a first differential operation unit performing complex conjugate multiplication of scattered pilots of complex symbols subjected to a fast Fourier transform (FFT) in an OFDM receiver, an interpolation unit repeating an operation of obtaining a median complex symbol between two consecutive symbols among complex symbols having first phase difference information from the first differential operation unit by a predetermined number, a second differential operation unit performing complex conjugate multiplication of two consecutive median complex symbols among median complex symbols from the interpolation unit, and a sampling frequency offset estimation unit estimating sampling frequency offset using complex symbols having second phase difference information from the second differential operation unit.
Sungkyunkwan University Foundation for Corporate Collaboration Samsung Electro-Mechanics Co., Ltd.
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Kyung Hoon Jung Eun Jae Goon Jung Soo Hyung Jin Hyun Suk
Won Youm Aum Han Choi Lee