Question
1. When using ASK, FSK or PSK techniques, how can we increase data rate? a. by decreasing M and increasing baud rate b. Hartleys Law
1. When using ASK, FSK or PSK techniques, how can we increase data rate?
a. by decreasing M and increasing baud rate | ||
b. Hartleys Law tells us that baud rate will always equal data rate when using ASK, FSK or PSK | ||
c. by increasing M, we can increase the data rate when compared to the baud rate | ||
d. by increasing M, we can increase the baud rate when compared to the data rate |
2. Hartleys Law represents the relationship between a signals symbol rate (baud rate) and data rate, given the number of levels (M) that a single symbol can take on.
True
False
3. QAM (quadrature amplitude modulation) incorporates both ASK and FSK techniques.
True
False
4. Line coding (i.e., binary data coded in to an electrical signal) produces a baseband signal, whereas ASK, FSK and PSK techniques create a passband signal.
True
False
5. You want to capture a live music concert and covert it into digital format for transmission. The human ear has a frequency bandwidth of approximately 20,000 Hz. Select the best sampling rate and bit depth.
a. fs=40,000 samples/s, Bit depth = 1 bit per sample | ||||||||||||||||||||||||||||||||||||||||||||||||||
b. fs=40,000 samples/s, Bit depth = 16 bit per sample | ||||||||||||||||||||||||||||||||||||||||||||||||||
c. fs=10,000 samples/s, Bit depth = 16 bit per sample | ||||||||||||||||||||||||||||||||||||||||||||||||||
d. fs=20,000 samples/s, Bit depth = 1 bit per sample 6. The bit error rate (BER) of a communications link is influenced by:
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