ROUNDOFF NOISE ANALYSIS FOR DIGITAL SIGNAL POWER PROCESSORS USING WELCH'S POWER SPECTRUM ESTIMATION.

被引：0
|
作者：
Chi, Chong-Yung [1 ]
Long, David [1 ]
Li, Fuk-Kwok [1 ]
机构：
[1] JPL, Pasadena, CA, USA, JPL, Pasadena, CA, USA
来源：
IEEE Transactions on Acoustics, Speech, and Signal Processing | 1987年 / ASSP-35卷 / 06期
关键词：
MATHEMATICAL TECHNIQUES - Estimation - NOISE; SPURIOUS SIGNAL;
D O I：
10.1109/TASSP.1987.1165200
中图分类号：
学科分类号：
摘要：
An analysis is presented of the noise due to finite word length effects for digital signal power processors using Welch's power spectrum estimation technique to measure the power of Gaussian random signals over a frequency band of interest. The input of the digital signal processor contains a finite-length time interval in which the true Gaussian signal is contaminated by Gaussian noise. The roundoff noise-to-signal ratio in the measurement of the signal power is derived. Computer simulations that validate the analytical results are presented. These results can be used in tradeoff studies of hardware design, such as number of bits required at each processing stage. The results presented are currently being used in the design of a digital Doppler processor for a radar scatterometer.
引用
收藏
页码：784 / 795
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