发明名称 |
Time Varying Quantization-based Linearity Enhancement of Signal Converters and Mixed-signal Systems |
摘要 |
A signal-linearization system and method reduces nonlinear distortions in a digitized signal generated by an analog-to-digital converter (ADC) when converting an analog input signal from analog to digital form. A signal adder adds a dither waveform to the analog input signal. An ADC includes sample-and-hold (S/H) circuitry and quantizer circuitry. The ADC converts the analog input signal with the added dither waveform into a digitized signal. The dither waveform operates to suppress nonlinear distortions attributed to the quantizer circuitry. A linearizer processor performs nonlinear equalization (NLEQ) on the digitized signal to suppress nonlinear distortions attributed to the S/H circuitry. A dither waveform removal module removes a digital counterpart of the dither waveform from the digitized signal.
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申请公布号 |
US2012013494(A1) |
申请公布日期 |
2012.01.19 |
申请号 |
US201113182260 |
申请日期 |
2011.07.13 |
申请人 |
SONG WILLIAM S.;MASSACHUSETTS INSTITUTE OF TECHNOLOGY |
发明人 |
SONG WILLIAM S. |
分类号 |
H03M1/20;H03M1/12 |
主分类号 |
H03M1/20 |
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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