کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1864742 1530661 2006 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Noise-aided SNR amplification by parallel arrays of sensors with saturation
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک و نجوم (عمومی)
پیش نمایش صفحه اول مقاله
Noise-aided SNR amplification by parallel arrays of sensors with saturation
چکیده انگلیسی

We consider sensor devices with saturation in their response, in charge of the transmission of a sinusoidal signal buried in Gaussian white noise, with a performance assessed by an input–output gain in the signal-to-noise ratio. We show that such saturating devices can always be tuned to achieve a signal-to-noise ratio gain larger than unity. When replicated to form parallel arrays, further improvement of the gain can be obtained with independent noise injected on the sensors. This provides smart arrays of simple nonlinear sensors capable of acting as noise-aided amplifiers, and where the highest gains in signal-to-noise ratio are always obtained at a nonzero level of the added noises.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physics Letters A - Volume 351, Issues 4–5, 6 March 2006, Pages 231–237
نویسندگان
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