发明名称 |
Orthogonal frequency division multiplexing demodulator |
摘要 |
An OFDM demodulator which does not require a reference signal for synchronization of carriers and can reduce influence of phase rotation by a propagation path when carrier synchronization is made. The OFDM demodulator performs Fourier transform plural times in 2 or more different operation ranges for the same OFDM symbol, calculates phases of sub carriers from the plural-time results of the Fourier transform, compares the calculated phases for each of the plural-time results of the Fourier transform and detects an error in frequency of reproduction carrier from the compared results.
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申请公布号 |
US8229042(B2) |
申请公布日期 |
2012.07.24 |
申请号 |
US20090575057 |
申请日期 |
2009.10.07 |
申请人 |
ARATANI KOICHI;ISHII HIROTAKE;XU DAN;HITACHI, LTD. |
发明人 |
ARATANI KOICHI;ISHII HIROTAKE;XU DAN |
分类号 |
H04L27/06 |
主分类号 |
H04L27/06 |
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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