Problem 5. A digital communication system encodes 1 bit per symbol, and transmits data at a rate of 1 Mbps. a) What is the pulse shape that requires minimum bandwidth for transmission such that intersymbol interference does not interfere with the processing at the receiver? b) What is the minimum baseband bandwidth for the case specified in the problem? c) What is the minimum passband bandwidth when the pulse shape is transmitted over a carrier at 1.9 GHz? d) A raised cosine with roll-off factor 0.22 is used as the pulse shape observed after matched filtering at the receiver. What is the passband bandwidth required for transmission? 3