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Communication SystemsNoise & SNR

Thermal-noise power available from a resistor over bandwidth B at absolute temperature T is ideally proportional to?

  • AkTB
  • BkT/B
  • CB/(kT)
  • Dk/TB
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Correct Answer: A. kTB
Explanation: Available thermal-noise power is N=kTB, where k is Boltzmann's constant, T is absolute temperature and B is bandwidth.
Reference: Standard communication systems: noise & snr
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