true false Flashcards
a signal amplifier should be placed after a long cable, rather than before
FALSE
The noise figure of a device specifies how much additional noise the device will contribute
to the noise already presented by the input source
TRUE
In the link-power budget equation, the received power is independent of the receive
antenna gain.
FALSE
Assuming a constant bit-rate satellite link, the data-rate with a rate (18,12) code is higher
than with a rate (12,9) code.
FALSE
The performance of a satellite link only depends on the power of the received signal.
FALSE
The equivalent noise temperature of the antenna on a satellite is generally smaller than
the equivalent noise temperature of the Earth-station antenna.
FALSE
The free-space transmission loss is lower with a high-gain transmit antenna.
FALSE
The free-space loss depends on the distance and the antenna gain.
FALSE
The atmospheric absorption losses are independent of the elevation angle of the receiving
antenna.
FALSE
Rainfall attenuates the received signal, but it does not introduce additional noise.
FALSE
The free-space transmission loss is the power loss resulting from the spreading of the
signal in space
TRUE
In the link-power budget equation, the received power is independent of the receive
antenna gain
FALSE
Free-space loss is the main component of the losses in the link-power budget equation
TRUE
Rainfall attenuates the received signal, and it also introduces noise.
TRUE
A channel code specified by (16,12) can detect more bit-errors in a data transmission than
a code specified by (8,3).
FALSE
The code rate for a (16,12) code is higher than for a (8,3) code.
TRUE
