Solve the following problem:
Consider a digital communication system that transmits information via QAM over a voice-band telephone channel at a rate of 2400 symbols/s.
The additive noise is assumed to be white and Gaussian.
1. Determine the εb/N0 required to achieve an error probability of 10-5 at 4800 bits/s.
2. Repeat part 1 for a rate of 9600 bits/s.
3. Repeat part 1 for a rate of 19,200 bits/s.
4. What conclusions do you reach from these results?