发明名称 |
Communication device having delay information calculating function |
摘要 |
A communication device using orthogonal multiplexing carrier method for determining delay information of received radio waves. In this device, a known signal demodulator performs OFDM demodulation to output demodulated signal, and a divider performs a complex division of the demodulated signal with a data sector of known signal of a database for each sub-carrier. By the data section of the known signal, the computation result of the amount of shift can be determined for each of sub-carriers. A delay analytical calculation circuit uses the computation result of the amount of shift for sub-carriers to analyze the delayed waves. For delay analysis, ESPRIT method is used to determine delay information by means of computation result of the amount of shift for each sub-carrier.
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申请公布号 |
US2002039347(A1) |
申请公布日期 |
2002.04.04 |
申请号 |
US20010885890 |
申请日期 |
2001.06.19 |
申请人 |
MATSUGATANI KAZUOKI;TANAKA MAKOTO |
发明人 |
MATSUGATANI KAZUOKI;TANAKA MAKOTO |
分类号 |
H04J11/00;H04B7/005;H04B7/08;H04L7/00;H04L27/26;(IPC1-7):H04J11/00;H04J1/00;H04J3/06 |
主分类号 |
H04J11/00 |
代理机构 |
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主权项 |
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