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. |
申请公布号 |
WO2012012244(A2) |
申请公布日期 |
2012.01.26 |
申请号 |
WO2011US43877 |
申请日期 |
2011.07.13 |
申请人 |
MASSACHUSETTS INSTITUTE OF TECHNOLOGY;SONG, WILLIAM S. |
发明人 |
SONG, WILLIAM S. |
分类号 |
H04B1/10;H03M1/12;H04B7/04 |
主分类号 |
H04B1/10 |
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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