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Explain and draw the error detection process

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Assignment

1. Convert the binary data "110101" into analog waveforms using following modulation techniques:

a. Two level Amplitude Shift Keying

b. Two level Frequency Shift Keying

c. Two level Phase Shift Keying

d. Differential Phase shift keying

e. Four level Amplitude Shift Keying

f. Four level Phase Shift Keying

g. Eight level Amplitude Shift Keying

2. With fc = 1000 kHz, fd = 50 kHz, and M = 16 (L = 4 bits), using Multiple Frequency-Shift Keying (MFSK), compute the frequency assignments for each of the sixteen possible 4- bit data combinations.

3. Draw the approximate Analog Modulation and Frequency Modulation waveforms in complete steps for the following signal:

247_QAM Constellation Diagram .jpg

4. Draw the 16 QAM Constellation Diagram having four different amplitude levels and four different phase levels.

5. Explain and draw the Error Detection Process for Cyclic Redundancy Check (CRC).

6. Compute the frame check sequence using Cyclic Redundancy Check (CRC) for the following information:

Message = 111010110, Pattern = 101110

7. Compute the transmitted signal using Direct Sequence Spread Spectrum for the following information:
Input: 101, Locally Generated PN bit stream: 011011010110, T = 4Tc

8. Explain why the square and circle shapes cells for cellular communications are not appropriate as compared to hexagonal shape cells.

Verified Expert

Conversion of binary data into analog waveforms, Computation of the frequency assignments, Drawing of the approximate Analog Modulation and Frequency Modulation waveforms, Drawing of the 16 QAM Constellation Diagram, Explanation and drawing the Error Detection Process, Computation the frame check sequence, Computation of the transmitted signal using Direct Sequence Spread Spectrum, Explanation about why the square and circle shapes cells for cellular communications is done.

Reference no: EM132403213

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