CHAPTER 4

TCE2311DATA COMMUNICATIONS & NETWORKINGTRIMESTER 1 2013/14

TUTORIAL 31. Figure shows the NRZ-L encoding of data stream. What is the data stream?

2. Figure shows the RZ encoding of a data stream. What is the data stream?

3. Figure shows the differential Manchester encoding of a data stream. What is the data stream?

4. Draw the graph of the NRZ-I scheme using each of the following data streams.

a. 00000000

b. 11111111

c. 01010101

d. 00110011

5. Draw the graph of the Manchester scheme using each of the following data streams.

a. 00000000

b. 11111111

c. 01010101

d. 00110011

6. Using the Nyquist theorem, calculate the minimum sampling rate for an analog signal with frequencies from 2000 to 8000 Hz

7. We want to transmit 5000 characters with each character encoded as 8 bits. find the number of transmitted bits for asynchronous and synchronous transmission.