发明名称 |
Symbol recovery from an oversampled hard-decision binary stream |
摘要 |
A received symbol stream is oversampled and correlated with a known sync word to determine the correlation properties of the oversampled signal with a known sync word. A linear filter, such as a moving average window filter, is convolved with the correlation signal to generate a convolution signal. Once the convolution signal has reached a predetermined threshold, it is scanned over a predetermined window of oversamples. If the convolution signal exceeds the threshold for the window of oversamples, the sync word has been found and the symbol stream is down-sampled at intervals that depend on the data rate of the symbol stream. This down-sampling process may be done by picking the center oversample corresponding to each information symbol given the timing alignment, or by doing a majority vote over a multiple number of samples centered around the center oversample.
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申请公布号 |
US2002161737(A1) |
申请公布日期 |
2002.10.31 |
申请号 |
US20010871389 |
申请日期 |
2001.05.30 |
申请人 |
CHI RICHARD;KRISHNAN RANGANATHAN;AGRAWAL AVNEESH;JOOTAR JITTRA |
发明人 |
CHI RICHARD;KRISHNAN RANGANATHAN;AGRAWAL AVNEESH;JOOTAR JITTRA |
分类号 |
H04L7/08;H04L7/04;(IPC1-7):G06F7/00 |
主分类号 |
H04L7/08 |
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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