How to calculate signal and noise power

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SUMMARY

The discussion focuses on calculating signal and noise power from a given signal current equation, I(t) = Acos(wt + theta). The signal power is definitively calculated using the formula P_signal = I^2 / R, which simplifies to P_signal = A^2 / (2*R). The original equation provided by the user does not include any noise component, indicating that noise power calculation is not applicable in this context.

PREREQUISITES
  • Understanding of electrical signal theory
  • Familiarity with power calculations in electrical circuits
  • Knowledge of the relationship between current, resistance, and power
  • Basic grasp of trigonometric functions in signal representation
NEXT STEPS
  • Research the concept of noise power in electrical signals
  • Learn about different methods for calculating signal-to-noise ratio (SNR)
  • Explore advanced signal processing techniques for noise reduction
  • Study the impact of resistance on power calculations in AC circuits
USEFUL FOR

Electrical engineers, signal processing specialists, and students studying circuit theory will benefit from this discussion on calculating signal and noise power.

sohagiut
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hello,
i have a signal current I(t)=Acos(wt+theta)
How can i calculate the signal power and noise power individually?

thanks
Reza
 
Engineering news on Phys.org
Signal power is given by <I^2>/R = A^2 / (2*R). Your equation has no noise.
 

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