ECET 310 Week 6 Assignment Homework 6_1 (Devry)
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1.
For a 64-PSK modulator with an input data rate(fb) equal to 36
Mbps and a carrier frequency of 100 MHz, determine the minimum
double-sided Nyquist bandwidth(fN) and the baud. Sketch the output
spectrum.
2.
Determine the bandwidth efficiency for the following modulators:
(a)
QPSK
=
(b)
64-QPSK =
(c)
128-QAM=
3.
A radio channel has a bandwidth of 10 KHz and a SNR of 15 dB. What is
the
maximum data rate that can be transmitted:
(a) Using any system?
(b) Using a code with 64 possible states?
4.
A modulator transmits symbols, each of which has 64
different possible states, 15,000 times per second. Calculate the baud
rate and the bit rate.
5. What is the shannon limit for a standard telephone circuit with an SNR of
30 dB
and a bandwidth of 3.3 KHz?
6. What is the maximum data rate possible for a standard telephone circuit with
an
SNR of 1023 and BW of 3 KHz using 8 bits per symbol?