1 signal element 2 signal elements a. One data element per one signal element (r = 1) b. One data elem ent per two signal elements (r= 2 data elements 4 data elements 11 01 11 1101 1 signal element 3 signal elements c. Two data elements per one signal element (r = 2) d. Four data elements per three signal elements (r= 4) Figure 2.1 Q2. Draw the graph of the following schemes using the data stream 11001101, assuming that the last signal level has been positive. a. NRZ-L b. NRZ-I c. Manchester d. Differential Manchester

Assume we want to find the best match between an EEG signal and a sinusoidal waveform. • EEG sample frequency was 50 Hz. Generate two sin waves with frequency at 14 Hz and 20 Hz. We limit these shifts to 360 sinusoids, each having 1° difference in phase shift. Calculate the Rxx of these two signals at different phases. We will have to shift the sine wave over the EEG signal to find the best match between the two signals.

For the given generator matrix. 0 1 0 0 1 0 1 1 1 0 0 1 1 0 01 1 0 1 1 1 0 0 0 1 1 0 1 G= A. Create a table (message "ml, m2, ..." and codewords "c1, c2,....") for the mapping scheme B. What is the bit-error detection capability? C. Determine the syndrome if the received codeword is: (a) 1010111 (b) 1001111

python coding to anayltically compute two signals, x(t), h(t)