# SW345 Homework Set 1 — Fall 2003

### Due: Monday, September 14

- An
8mm digital tape holds 7 GB (gigabytes). A vehicle carrying a package of 3
digital tapes is traveling a 18 km/hr. For what range of distances does
this vehicle's data rate exceed the typical ATM speed of 155 Mbps
(megabits per second)?

2.
What is the maximum data rate of a binary signal traveling
over a 3 kHz channel with 20 dB signal to noise ratio? (Hint – Shannon Channel
Capacity)

3.
A cable company enters the telephone business using a 10 Gbps
fiber optic cable. Assuming that each telephone conversation is digitized into
an 8-bit sample every 125 µsec, how many simultaneous telephone conversations
can the cable carry?

Home Page