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Noise in Signal Processing: A Detailed Analysis

Explore the concept of noise in signal processing through Jiri Bystricky's research on thermal noise, ADF simulation, and ad hoc noise generation. Learn about how white noise affects pulse generation and propagation, and the impact of analog filters in noise suppression.

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Noise in Signal Processing: A Detailed Analysis

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  1. NOISE • What is noise ? (without speaking about pile-up) • tsim_l1cal2b • ADF simulation • Signal processing (thermal noise) Jiri Bystricky - Saclay

  2. tsim_l1cal2b • ad hoc noise added to each trigger tower (input to TAB) • Jovan’s conclusions are based on that Jiri Bystricky - Saclay

  3. ADF simulation • “white” noise added every ns to the generated puls • suppressed by analog filter by a factor of 8 • not much of it left at the end Jiri Bystricky - Saclay

  4. <0.25 GeV>/ns propagated through ADF Jiri Bystricky - Saclay

  5. <2 GeV>/ns propagated through ADF Jiri Bystricky - Saclay

  6. Thermal noise • W.E.Cleland, E.G.Stern: Signal processing… NIM A 338 (1994) 467 – 497 • Gaussian amplitude distribution • Poisson distribution to find number of pulses in each BC • Multiplied by h´(t) ( h(t) is the impulse response) Jiri Bystricky - Saclay

  7. Questions • add random values at some t and where? • to the generated pulse • after the analog filter • to the ADC samples • which amplitude? • propagate using an impuls response or not? ( and which impuls response) • information from zero-bias trigger ? Jiri Bystricky - Saclay

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