) Sketch the NRZ, RZ and AMI Waveform for the following code:­100111110010110000001­b) Read (Chapter 4) about polar NRZ-L and NRZ-I schemes and apply them on the above code. Comments on advantage and disadvantages.Task 2 (Block Coding)­Using the given table, encode the following data sequence:100111110010110000001010111

Which is the correct waveform of AMI line coding scheme for the given bit stream as 1 1 0 0 1 0 0 0 0 1 0. Consider last signal level is negative. * 2 points Option 1 Option 2 Option 3

Linear block code

R1 = 0b1111, R2 = 0b0101 BIC R0, R1, R2  *1 pointR0 = 0b1010R0 = 0b1111R0 = 0b0101R0 = 0b1100

Which of the following structures is / are polar?Data:

Question A [10 marks in total]. Louise needs to send to Madhu sequences which consist of lettersT, E, B, L. Each letter is represented by a two-bit message, as follows:T= [0 0], E= [0 1], B= [1 0], L= [1 1].Since Louise and Madhu have to use a one-way, noisy channel, BSC(𝑝) with small 𝑝, Louise encodeseach message using the generator matrix𝐺 = [1 0 0 1 10 1 1 0 1]of a binary linear code 𝐶.A1 [2 marks] Represent the word LET as three two-bit messages, encode each message as describedabove and write down the resulting three codevectors of 𝐶.A2 [2 marks] Write down a standard array for 𝐶. (You do not need to explain your answer.)A3 [2 marks] Determine 𝑃corr(𝐶), the probability that a codevector of 𝐶 is sent over BSC(𝑝) andthe received vector is decoded correctly. (Briefly indicate what you have used to arrive at theanswer.)A4 [2 marks] Madhu received the following six vectors via the channel:[1 1 0 1 1] , [0 1 1 0 0] , [0 1 1 0 1] , [0 0 1 0 0] , [0 1 1 1 0] , [1 1 1 0 1]Determine the six-letter sequence which was most likely sent by Louise. For decoding, youmust use the standard array you constructed in part A2; you should indicate, e.g., by drawingarrows on the standard array, how you decode the received vectors. Your answer needs to besix letters, not vectors, which means that you need to unencode your answer.A5 [2 marks] Write down the weight enumerator 𝑊𝐶(𝑥, 𝑦) of 𝐶.