Question: Repeat Problem P4-3 for the differential Manchester scheme. Problem 4-3 Draw the graph of the NRZ-L scheme using each of the following data streams, assuming

Repeat Problem P4-3 for the differential Manchester scheme.

Problem 4-3

Draw the graph of the NRZ-L scheme using each of the following data streams, assuming that the last signal level has been positive. From the graphs, guess the bandwidth for this scheme using the average number of changes in the signal level. Compare your guess with the corresponding entry in Table 4.1.

Category Bandwidth (average) B= N/2 Scheme Characteristics Unipolar Costly, no self-synchronization if long Os or 1s, DC No self-synchronization if long Os or Is, DC No self-synchronization for long Os, DC Self-synchronization, no DC, high bandwidth No self-synchronization for long Os, DC No self-synchronization for long same double bits NRZ B= N/2 B= N/2 B= N B= N/2 NRZ-L Polar NRZ-I Biphase AMI Bipolar 2B1Q B= N/4 Multilevel Self-synchronization, no DC Self-synchronization, no DC No self-synchronization for long Os 8B6T B= 3N/4 4D-PAM5 B= N/8 Multitransition MLT-3 B= N/3

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