发明授权
- 专利标题: System and method for spectral shaping of dither signals
- 专利标题(中): 抖动信号频谱整形的系统和方法
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申请号: US11340603申请日: 2006-01-27
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公开(公告)号: US07317410B2公开(公告)日: 2008-01-08
- 发明人: Kevin Lee Miller
- 申请人: Kevin Lee Miller
- 申请人地址: US CA Irvine
- 专利权人: Broadcom Corporation
- 当前专利权人: Broadcom Corporation
- 当前专利权人地址: US CA Irvine
- 代理机构: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- 主分类号: H03M1/20
- IPC分类号: H03M1/20
摘要:
A digital modulator includes a quantizer and a mapper. The quantizer converts a dithered signal value to a voltage. The mapper provides a modulated signal based on the voltage received from the quantizer. The mapper may maintain a substantially identical average centroid for modulated signals provided by the mapper. In an aspect, the mapper is included in a feedback of the digital modulator. The digital modulator may include any number of mappers. For example, a mode selection switch may select one of a plurality of mappers to map a voltage level received from the quantizer to a respective digital sequence.
公开/授权文献
- US20060125668A1 System and method for spectral shaping of dither signals 公开/授权日:2006-06-15