减轻传感器的削波

Shang-Kee Ting, A. H. Sayed
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引用次数: 7

摘要

模数转换器(adc)中非线性失真的一个主要来源是削波。这个问题在采样数据的带宽上引入了杂散噪声。先前的工作通过依赖过采样或假设空频带以及使用稀疏信号表示来从采集的样本中恢复信号。在这项工作中,我们提出了一种不同的方法,它使用两个数据流来减轻裁剪失真。仿真结果表明,该方法的信噪比提高了9dB,而传统方法在某些情况下甚至会降低信噪比。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Mitigation of clipping in sensors
One major source of nonlinear distortion in analog-to-digital converters (ADCs) is clipping. The problem introduces spurious noise across the bandwidth of the sampled data. Prior works recover the signal from the acquired samples by relying on oversampling or on the assumption of vacant frequency bands and on the use of sparse signal representations. In this work, we propose a different approach, which uses two streams of data to mitigate the clipping distortion. Simulation results show an SNR improvement of 9dB, while the conventional approaches may even degrade the SNR in some situations.
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