ECET 310 Week 5 Assignment Homework 5_1

1. Determine the Nyquist sample rate for a maximum analog input frequency of:

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(a) 4 KHz

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10 KHz

1. Determine the dynamic range for a 10-bit sign-magnitude PCM code.
2. Determine the minimum number of bits required in a PCM code for a dynamic range of 80 dB. What is the coding efficiency?
3. For a resolution of 0.04 V, determine the voltages for the following linear seven- bit sign magnitude PCM codes
4. Determine the resolution and quantization error for an eight-bit linear sign magnitude PCM code for a maximum decoded voltage of 1.27 V
5. For a 12-bit linear PCM code with a resolution of 0.02 V, determine the voltage range that would be converted to the following PCM codes.
6. A µ-law compression encoder has

ECET 310 Week 6 Assignment Homework 6_1

Computer Science – General Computer Science

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=

1. 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?

1. 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
2. What is the shannon limit for a standard telephone circuit with an SNR of 30 dB and a bandwidth of 3.3 KHz?
3. 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?

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