Cellular provider A is deploying an FDMA/FDD digital wireless communication network. the uplink of each user employs a speech encoder that operates a data stream with a rate of 9.6 Kb. It also employs a digital modulation scheme with spectral efficiency of 1.2b sec Hz. Assume that guard bands of width 500 Hz must be used between the FDMA channels and that the total bandwidth assigned to the link is 820 kHz

What is the link capacity of the system? In other words how many mobiles can communicate with the base station simultaneously?

Cellular provider B is deploying a combined FDMA/FDD digital system with FDD. As the mobile, the speech encoder of each user computes a data stream with the rate of 8 Kb. The encoder bitstream is grouped into groups of 80 bits that with the addition of 20 synchronization control bits form a block of 100 bits assume that the spectral efficiency of the digital modulation scheme involved in 1.2 sec Hz

How many users can transmit simultaneously using TDMA on a single FDMA channel of width 25Khz?

How much bandwidth is needed by system B to make the number of users supporting system b the same as those supported by system A?

Answer rating: 100% (QA)

Data stream operates with a rate of 96 ... View the full answer