B. What is the amount of bandwidth needed to maintain the maximum data rate identified in part A, if the SNR doubles to 20 dB?

QUESTION 25 A microwave data link has been designed to operate at 110,000 symbols per second while encoding 14 bits per symbol. The receiving equipment requires at least a 50 dB signal to noise ratio in order to operate without significant error. At least 55 kHz of bandwidth on the transmission channel are required for the attempted system. The data rate of the designed link will be 1.54 Mbps. If the actual signal to noise ratio is 100 dB, the system could support encoding as many as 17 bits per symbol. There is not enough information given to determine the minimum transmission power needed to make sure an acceptable power level arrives at the receiver. Exactly 16,348 different symbols would be needed to support 17 bits per symbol. If the background noise at the receiver is -50 dBm, the receive power will need to be at least 1 dBm.

Problem 3 A TDMA system provides 48.6 kbps data rate for a single user over one physical channel when 3 users are supported in a channel with 6 time slots in a frame. When the frame length is Tf = 40 ms, how many bits does one time slot contain?

Need ans ASAP