发明名称 |
Interpolating bandpass filter for packet-data receiver synchronization |
摘要 |
An interpolating bandpass filter for packet-data receiver synchronization comprises a single delay line that delays the passband-sampled data from the analog-to-digital converter, and a convolving structure that uses the delay line to implement a L-times oversampling bandpass filter. A separate accumulator accumulates a fractional phase difference that represents the frequency offset between the remote transmitter's frequency and the receiver's sampling frequency. The integer portion of the accumulator is used to determine the number of samples to delay the input of the filter, while the fractional portion is used to choose two coefficient sets closest to the desired delay and to interpolate between these two filter sets.
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申请公布号 |
US6553087(B1) |
申请公布日期 |
2003.04.22 |
申请号 |
US20010848814 |
申请日期 |
2001.05.04 |
申请人 |
2WIRE, INC. |
发明人 |
ALELYUNAS CARL H.;DESJARDINS PHILIP |
分类号 |
H03H17/06;H04J3/06;H04L7/02;(IPC1-7):H04L7/00 |
主分类号 |
H03H17/06 |
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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