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6- Answer the following questions: 
a. Calculate the total number of bits in the GOP of D1 (Table 2). (3 marks)
b. Knowing that the 15 frames in Table 2 should be transmitted in 0.5s, what is the required bit rate (in bits/s) to successfully transmit the GOP of Table 2 within the required time limit? (3 marks)
c. Calculate the total number of bits in the GOP of D2 (Table 3). (3 marks)
d. Knowing that the 15 frames in Table 3 should be transmitted in 0.5s, what is the required bit rate (in bits/s) to successfully transmit the GOP of Table 3 within the required time limit? (3 marks)
e. What can you conclude concerning the transmission of the video sequence, after splitting it into two descriptions, knowing that the achievable data rate over the link between BS1 and the mobile user is 100 kbits/s, and the achievable data rate over the link between BS2 and the mobile user is 95 kbits/s? (3 marks)[/ltr]