PART III. Short answers and calculations (55 points Requirements: You need to show all the calculations. (6 points) For a baseband channel with a 2-MHz bandwidth, what is the data rate for this channel if we use the following line coding scheme? 1) Manchester 2) NRZ-I 1. 2. (5%) A digital signal system operates at 10,000 bps. If a signal element encoded with 4 discrete levels, assume the average case (c=1/2), what is the minimum required bandwidth of the channel? 3 (5%) The bandwidth of an audio signal is 5 kHz. If AM radio is used to transmit the audio signal, what is the required bandwidth? (5%) we have a channel with 4 kHz bandwidth. If we want to send data at 200 kbps. what is minimum SNRds requirement for this channel? 4