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Noise#

Thermal noise and the noise factor of receiver chains.

Johnson-Nyquist thermal noise (1928)

Johnson-Nyquist thermal noise (1928)

Friis’s noise formula for cascaded amplifiers (1944)

Friis's noise formula for cascaded amplifiers (1944)

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OFDM: many subcarriers from one inverse DFT (1966-1971)

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Johnson-Nyquist thermal noise (1928)
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