In the U.S. AMPS system, the total available band for reverse channel (uplink) is 12.5 MHz, and the frequency reuse factor of K = 7 is used with three sector antennas at the base stations.
(a) What are the number of channels per sector? What is the number of users (Erlang capacity) per sector for a 2% probability of blockage?
(b) Repeat part (a) for a digital cellular system in which three TDMA users operate simultaneously in each analog channel.