Question 6.9

A microwave line-of-sight communication link uses 256-QAM to convey 32 Mbps. The bandwidth occupied by the signal is 7 MHz.
  1. What is the value of a used in the raised cosine filtering?
  2. If the signal to noise ratio on the link is 40 dB, what is the theoretical maximum capacity for the channel in a 7 MHz bandwidth?