- 2 4 Assume That We Need To Design A 2g Mobile System The Frequency Band Is Shared By 4 Different Service Providers 1 (221.8 KiB) Viewed 37 times
2. [4] Assume that we need to design a 2G mobile system. The frequency band is shared by 4 different service providers. The frequency band is divided into 200 kHz channels for either uplink or downlink. Each frequency channel can support 8 different time slots which can be used for voice or data services. a) [2] Suppose each service provider can have 30 uplink channels and 30 downlink channels, what is the total bandwidth (uplink + downlink) of the frequency band we need? b) [2] Suppose every service provider applies frequency re-use in the cellular network, and divide its available frequency channels into two groups for the re- use. Also, 7 out of the 8 time slots are used for voice calls. If the total number of mobile subscribers that can be supported at the same time by all 4 service providers is 430,080, how many cells exist in the cellular network?