发明名称 |
APPARATUS AND METHOD FOR OBTAINING SYNCHRONIZATION OF OFDM/CDMA SYSTEM |
摘要 |
PURPOSE: An apparatus for obtaining synchronization of an OFDM/CDMA(orthogonal frequency division multiplexing/code division multiple access) system is provided to perform frame synchronization and sampling clock synchronization at the same time. CONSTITUTION: An FFT(fast Fourier transform,119) performs FFT of an input digital frame through plural sub-carriers. A pilot detector(121) detects pilot carriers interpolated into every FFT-processed frame symbol and measures time phase difference therebetween. A phase difference operator(125) obtains time phase difference between the pilot carriers of each pilot symbol. An FFT window controller controls frame synchronization through symbol timing offset while a PLL(phase locked loop,123) controls sampling clock synchronization through sampling clock timing offset of the mean phase difference. |
申请公布号 |
KR20010001706(A) |
申请公布日期 |
2001.01.05 |
申请号 |
KR19990021118 |
申请日期 |
1999.06.08 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHOI, JIN GYU;LEE, HYEON GYU |
分类号 |
H04J11/00 |
主分类号 |
H04J11/00 |
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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