发明名称 |
Sample rate reduction in data communication receivers |
摘要 |
Sample rate reduction in data communication receivers. Digital sampling of analog data is performed using a reduced sample rate. The reduction factor may be any number of factors including a factor that divides the sample rate by a factor of two. The reduction of the sampling frequency is from a sampling frequency that is greater than twice the highest frequency component in an analog input signal. These analog input signals may be I and Q streams in certain embodiments. A digital interpolation filter may be employed to increase (up-convert) the sample rate of a digital signal before it is input to a VID filter that is used to recover the transmitted symbols from the over-sampled data stream. In this embodiment, this technique allows a front end of a communication receiver to be clocked at a lower sampling rate without affecting the performance of the VID filter.
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申请公布号 |
US7559076(B2) |
申请公布日期 |
2009.07.07 |
申请号 |
US20020184770 |
申请日期 |
2002.06.28 |
申请人 |
BROADCOM CORPORATION |
发明人 |
YU TOMMY;JAFFE STEVEN;KRAFFT STEPHEN EDWARD |
分类号 |
H04N5/445;H03H17/06;H04L27/38;H04N7/173 |
主分类号 |
H04N5/445 |
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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