发明名称 |
Receiver of an orthogonal frequency division multiplexing system |
摘要 |
In an orthogonal frequency division multiplexing (OFDM) system, a receiver includes a received signal transformer, a frequency offset estimator and a frequency compensator. The received signal transformer removes from a training symbol a guardtone and a sub-carrier deviated from a mean value of effective sub-carrier signals by over a predetermined value. The frequency offset estimator estimates the frequency offset of the OFDM digital signal and the frequency compensator compensates the frequency offset of received signals by using the estimated frequency offset. Thus, data transmission efficiency can be greatly improved and influence from a frequency-selective noise channel can be minimized. Further, by removing data unnecessary for the frequency offset estimation, the calculation amount can be reduced.
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申请公布号 |
US2003058953(A1) |
申请公布日期 |
2003.03.27 |
申请号 |
US20020253830 |
申请日期 |
2002.09.23 |
申请人 |
LEE GOON SEOP;LEE DONG HAHK;IHM JONG TAE |
发明人 |
LEE GOON SEOP;LEE DONG HAHK;IHM JONG TAE |
分类号 |
H04J11/00;H04L27/00;H04L27/26;(IPC1-7):H04K1/10;H04L27/28 |
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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