A BPAM system uses the modified duobinary pulse and amplitude levels of +1 and -1 to represent bits ‘1’ and ‘0’ respecti

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A BPAM system uses the modified duobinary pulse and amplitude
levels of +1 and -1 to represent bits ‘1’ and ‘0’ respectively. No
precoding is applied to the bits prior to transmission. The MF
output sequence at the receiver is as follows:
1.9 1.8 -0.1 0.1 -0.1 -0.1
Draw the transmitted and received signal constellations. Mark
the decision threshold, decision regions and clearly state the
decision rule for symbol by symbol detection. Perform symbol by
symbol detection and mark detection errors for the following MF
output sequence.
Derive state and trellis diagrams representing the MF output
based on system memory.
At a certain phase of MLSD using the Viterbi algorithm
find the metrics of all states in the trellis is 1, calculate the
states’ metrics for the next decoding step if the incoming MF
sample is 0.4.
d. Would MLSD perform better than symbol by symbol detection for
the received MF sequence given in Section b.? Explain your
answer.