发明授权
- 专利标题: Signal processing method and data processing method and apparatus
- 专利标题(中): 信号处理方法及数据处理方法及装置
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申请号: US12980001申请日: 2010-12-28
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公开(公告)号: US08554818B2公开(公告)日: 2013-10-08
- 发明人: Deming Zhang , Haiting Li
- 申请人: Deming Zhang , Haiting Li
- 申请人地址: CN Shenzhen
- 专利权人: Huawei Technologies Co., Ltd.
- 当前专利权人: Huawei Technologies Co., Ltd.
- 当前专利权人地址: CN Shenzhen
- 代理机构: Leydig, Voit & Mayer, Ltd.
- 优先权: CN200910150720 20090624
- 主分类号: G06F17/14
- IPC分类号: G06F17/14
摘要:
The present invention discloses a signal processing method and a data processing method and apparatus. A time-domain to frequency-domain signal processing method includes: pre-processing time-domain data; pre-rotating the pre-processed data by using a rotation factor a·WNn+0.5; performing a discrete Fourier transform (DFT) of N/4 points on the pre-rotated data; and post-rotating the data transformed by the DFT by using a rotation factor b·WNk+0.5 to obtain frequency-domain data. A frequency-domain to time-domain signal processing method includes: twiddling frequency-domain data; pre-rotating the twiddled data by using a rotation factor c·WNk+0.5; performing a DFT of N/4 points on the pre-rotated data; and post-rotating the data transformed by the DFT by using a rotation factor d·WNn+0.5; and post-processing the post-rotated data to obtain time-domain data. The present invention increases the efficiency of signal processing.