1. Reading: Continue studying Chapter 2 on signals and Chapter 3 on linear systems in the Lathi text.

2. In class, we computed the channel capacity for a telephone line that is used by a dial-up modem. Refer to the Demonstrations and Class Notes link on the course web page for more information and a sample Matlab program.

   Please compute the channel capacity for a typical cable modem that operates over a coaxial cable. Search on the web to determine the bandwidth, B (in Hz), that is used in most systems. Also, use the web to determine typical signal to noise ratio (SNR) values for cable modems.

   • Compute the channel capacity, C = B log₂(1 + SNR) (bits/sec), for a range of B and SNR values that are common for cable modems. Present your results in a plot or a table.

   • Compare the capacity with the bit rates that are actually achieved with commercially available cable modems. How close are current cable modems to the capacity limit?

Thank you and have fun.