发明名称 |
Sampling frequency offset estimation apparatus and method of OFDM system |
摘要 |
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. |
申请公布号 |
US8300717(B2) |
申请公布日期 |
2012.10.30 |
申请号 |
US20090492282 |
申请日期 |
2009.06.26 |
申请人 |
YOUM JUNG EUN;CHOI HYUNG JIN;HAN JUNG SOO;WON KYUNG HOON;LEE HYUN SUK;AUM JAE GOON;SAMSUNG ELECTRO-MECHANICS CO., LTD.;SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION |
发明人 |
YOUM JUNG EUN;CHOI HYUNG JIN;HAN JUNG SOO;WON KYUNG HOON;LEE HYUN SUK;AUM JAE GOON |
分类号 |
H04K1/10 |
主分类号 |
H04K1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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