Antenna noise temperature of a mobile terminal is TA = 290 K. The first amplifier stage of the radio

Antenna noise temperature of a mobile terminal is TA = 290
K. The first amplifier stage of the radio provides a 20 dB gain and has a noise
figure of 5. The second amplifier stage has 10 dB gain and a noise temperature
of 3000 K. The contribution of other stages on the system noise is ignored.

a. Determine the equivalent noise temperature of the first
two stages of the radio and compare with system noise temperature.

b. If the baseband processing of the radio requires an SNR
of 10 dB in 10 kHz, what is the receiver sensitivity?

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