发明名称 |
Demodulator for digital communication systems |
摘要 |
The present invention is a method and an apparatus for demodulating a signal received over a propagation channel. The received signal includes a synchronizing signal and is formed by one or more rays including a dominant ray. The method comprises the following: (a) generating a multi-path intensity profile of the propagation channel from the received signal; (b) determining an arrival time of the dominant ray and a propagation channel response corresponding to the arrival time based on the multi-path intensity profile; (c) decimating the received signal synchronously with the arrival time of the dominant ray to provide signal samples to an equalizer; (d) configuring the equalizer based on the multi-path intensity profile to deactivate some of the coefficients of the equalizer; (e) initializing the active coefficients of the equalizer based on the propagation channel response; (f) updating the active coefficients of the equalizer; and (g) equalizing the received signal using the equalizer to produce a filtered signal.
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申请公布号 |
US6421380(B1) |
申请公布日期 |
2002.07.16 |
申请号 |
US19990266218 |
申请日期 |
1999.03.10 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
GU JIAN;PAN JIANPING |
分类号 |
H04L25/03;(IPC1-7):H03H7/30 |
主分类号 |
H04L25/03 |
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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