1) A telephone line has a bandwidth of 2800 Hz and its signal-to-noise ratio has been computed as 4000. Compute the highest bit rate of this line. 2) Data needs to be sent over a noiseless channel of 30-kHz bandwidth. a. Find the number of signal levels M needed if the bit rate desired is approximately 400kbps b. What maximum bit rate will you get with M signal levels found in part (a)? 3) In a communication channel, the power of a signal is 90mW and the power of noise is 60W. What are the values of SNR and SNRdB? 4) Given the narrow (usable) audio bandwidth of a telephone transmission facility, a nominal SNR of 56 dB (400,000), and a certain level of distortion. a. What is the theoretical maximum channel capacity (Kbps) of traditional telephone lines? b. What can we say about the actual Maximum channel capacity? 5) Consider a channel with 0.5MHz capacity and an SNR of 63. a. What is the upper limit to the data rate that the channel can carry? b. The result of part (a) is the upper limit. However, as a practical matter, better error performance will be achieved at a lower data rate. Assume we choose a data rate of 2/3 as the maximum theoretical limit. How many signal levels are needed to achieve this data rate