These are the Matlab questions, from the "Lab : Communication protocol and Bit Error Rate". I need correct answers as soon as possible (before 19:30 4/3/2021), could experts help me please?

Thank you so much!

Question 1 1 pts If the input bit sequence (bs) is less than 1280 bits, we will use zero padding to fill the block as mentioned in Task 1. How should we implement this by using the zeros function? O zeros(1, 1280-length(bs)) zeros(1, 1280-bs) zeros(1, 1280+bs) zeros(1, bs) Question 1 1 pts Calculate the value of the threshold from the training sequence as shown below: Training Sequence 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0 0 500 1000 1500 sample index Please write your answer with 2 decimal places (e.g., x.xx) Question 1 1 pts There are different ways to find the subsampling points in this task. One way is to get to the last sample of the first data bit and then set the step size to SPB as shown to get to the subsequent bits: last sample of the first data bit start_ind indicates the beginning of the start bit C+k C+k/2 bo bub2 ba 14 b5 b6 training seq SPB 2xSPB-1 sample/compare here start_ind Which is the correct code to indicate the index of the first sample point that we want? O start_ind+SPB O start_ind+2*SPB+1 O start_ind+2*SPB-1 o start_ind start_ind+2*SPB Question 1 1 pts What is the bit rate in Mbps if each bit is sent with 20 samples? Assume that the sampling rate is 1 MHz. Please key in the numerical value with 2 decimal places in Mbps. (e.g., X.XX )