发明名称 |
Transmitting and receiving method for reducing distortion caused by a time-varying channel in an orthogonal frequency division multiplex system |
摘要 |
Disclosed is a transmitting and receiving method for reducing a time-varying channel distortion in an orthogonal frequency division multiplex (OFDM) system. In the present invention, the transmitter defines M sub-channels in one data group, mathematically analyzes a change of channel for each path causing a time-varying channel distortion in a high-speed mobile environment by approximation, calculates a weight value based on the mathematical analysis and assigns the calculated weight value to transmit data of each sub-channel. Subsequently, the receiver combines the signals of these M sub-channels and demodulates the combined signals. Accordingly, the present invention greatly reduces a distortion caused by the time-varying channel to improve a bit error rate and a channel estimation performance.
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申请公布号 |
US7382718(B2) |
申请公布日期 |
2008.06.03 |
申请号 |
US20020334354 |
申请日期 |
2002.12.31 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
CHANG KYUNG-HI;KIM YUN-HEE;CHO YONG-SOO;PARK KYUNG-WON |
分类号 |
H04L5/04;H04L27/26;G06F15/00;H04B7/005;H04J11/00;H04L1/06;H04L25/02;H04L27/00 |
主分类号 |
H04L5/04 |
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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