SW345 Homework Set 1 — Fall 2003

Due: Monday, September 14

  1. 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?

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