Question

A spectrum of 30 MHz is allocated to a cellular system which uses two 25 KHz simplex channels to provide full duplex voice channels. What is the number of channels available per cell for 4 cell reuse factor?

(a) 150 channels

(b) 600 channels

(c) 50 channels

(d) 85 channels

I had been asked this question in examination.

I'd like to ask this question from Frequency Reuse in division The Cellular Concept – System Design Fundamentals of Wireless/Mobile

Answer 1

Correct answer is (a) 150 channels

Easiest explanation: Total bandwidth is 30 MHz. And the channel bandwidth is 50 KHz/duplex channel (25KHz*2). Therefore, total available channels are 600 channels (30,000/50). For 4 cell reuse factor, total number of channels available per cell will be 150 channels (600/4).