Question

In US AMPS, 416 channels are allocated to various operators with 10 kHz guard band and channel between them is 30 kHz. What is the spectrum allocation given to each operator?

(a) 12.5 kHz

(b) 30 kHz

(c) 12.5 MHz

(d) 30 MHz

The question was asked in homework.

Asked question is from Frequency Division Multiple Access (FDMA) topic in division Multiple Access Techniques for Wireless Communications of Wireless/Mobile

Answer 1

Right choice is (c) 12.5 MHz

To explain I would say: Spectrum allocated to each cellular operator is 12.5 MHz. As Bt = NBc + 2Bguard; which is equal to 416*30*10^3+2(10*10^3) = 12.5 MHz.